INTEGRATED HEALTH SERVICES INC
S-4, 1997-09-17
SKILLED NURSING CARE FACILITIES
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  As filed with the Securities and Exchange Commission on September 17, 1997
                                                 REGISTRATION NO. 333-__________

================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                               ------------------

                                    FORM S-4
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933

                               ------------------


                        INTEGRATED HEALTH SERVICES, INC.
             (Exact Name of Registrant as Specified in Its Charter)


<TABLE>
<S>                                   <C>                              <C>
               DELAWARE                           8051                      23-2428312
  (State or other jurisdiction of     (Primary Standard Industrial       (I.R.S. Employer
   incorporation or organization)      Classification Code Number)     Identification Number)
</TABLE>

                              ------------------

     10065 Red Run  Boulevard,  Owings Mills,  Maryland  21117,  (410)  998-8400
(Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)

                              ------------------

     Marshall A. Elkins, Esq., Executive Vice President and General Counsel
Integrated  Health  Services,  Inc.,  10065  Red  Run  Boulevard,  Owings Mills,
                         Maryland 21117, (410) 998-8400

(Name,  address,  including zip code, and telephone number, including area code,
                             of agent for service)

                                   Copies to:




<TABLE>
<S>                                 <C>                                  <C>
        Carl E. Kaplan, Esq.              Leslie A. Glew, Esq.           Thomas A. Simser, Jr., Esq.
    Fulbright & Jaworski L.L.P.        Senior Vice President and         Winderweedle, Haines, Ward
          666 Fifth Avenue             Associate General Counsel              & Woodman, P.A.
     New York, New York 10103       Integrated Health Services, Inc.        Barnett Bank Center
            (212) 318-3000              10065 Red Run Boulevard           390 North Orange Avenue
        (212) 752-5958 (FAX)          Owings Mills, Maryland 21117         Orlando, Florida 32801
                                             (410) 998-8400                    (407) 423-4246
                                          (410) 998-8747 (FAX)              (407) 423-7014 (FAX)

</TABLE>

                              ------------------

        Approximate date of commencement of proposed sale to the public:
As  soon  as practicable after this Registration Statement becomes effective and
                      all other conditions to the Merger
      (as defined in this Registration Statement) are satisfied or waived.
                              ------------------


     If  the  securities  being  registered  on  this  Form are being offered in
connection  with the formation of a holding company and there is compliance with
General Instruction G, check the following box: [ ]

                              ------------------


                        CALCULATION OF REGISTRATION FEE
================================================================================

<TABLE>
<CAPTION>
                                                                        PROPOSED MAXIMUM   PROPOSED MAXIMUM
              TITLE OF EACH CLASS OF                  AMOUNT TO BE       OFFERING PRICE        AGGREGATE            AMOUNT OF      
           SECURITIES TO BE REGISTERED                REGISTERED(1)       PER SHARE(2)     OFFERING PRICE(2) REGISTRATION FEE(3)(4)

<S>                     <C>                         <C>                      <C>            <C>                   <C>
Common Stock, par value $.001 per share (including                                                                                 
 the Preferred Stock Purchase Rights)(5) .........  19,625,323 shares          N.A.         $ 657,022,448.63      $199,097.71      
                                                                                         


<CAPTION>
                                                    
              TITLE OF EACH CLASS OF                
           SECURITIES TO BE REGISTERED              

Common Stock, par value $.001 per share (including
 the Preferred Stock Purchase Rights)(5) .........  
</TABLE>


================================================================================

(1) Represents the maximum number of shares of common stock, par value $.001 per
    share (the "IHS Common Stock"), of Integrated Health Services,  Inc. ("IHS")
    anticipated to be issued in connection  with the Merger (as defined  herein)
    in exchange for all of the issued and  outstanding  shares of common  stock,
    $.0002  par value per  share  ("RoTech  Common  Stock"),  of RoTech  Medical
    Corporation ("RoTech"), assuming the issuance prior to the Effective Time of
    the Merger (as defined  herein) of all shares of RoTech Common Stock subject
    to rights to acquire  shares of RoTech  Common  Stock held by persons  other
    than IHS.


(2) Estimated  pursuant to Rule 457(f) of the Securities Act of 1933, as amended
    (the  "Securities  Act"),  based upon the  estimated  market  value of up to
    33,801,798 shares of RoTech Common Stock to be acquired by IHS in the Merger
    (based upon the average of the reported high and low sales prices of a share
    of RoTech Common Stock on the Nasdaq  National  Market on September 15, 1997
    of $19.4375 per share).

(3) The registration fee for the securities registered hereby,  $199,097.71,  is
    calculated pursuant to Rule 457(f) under the Securities Act, as follows: one
    thirty-third  of one percent of the product of $19.4375,  the average of the
    reported high and low sales prices for a share of RoTech Common Stock on the
    Nasdaq National Market on September 15, 1997, times 33,801,798,  the maximum
    number of shares of RoTech Common Stock to be acquired by IHS in the Merger.

(4) Pursuant to Rule 457(b),  $119,289.07  of the  registration  fee was paid on
    August 15, 1997 in  connection  with the filing of  preliminary  joint proxy
    material.

(5) The Preferred Stock Purchase Rights, which are attached to the shares of IHS
    Common   Stock  being   registered,   will  be  issued  for  no   additional
    consideration; no additional registration fee is required.

                              ------------------

     THE REGISTRANT  HEREBY AMENDS THIS  REGISTRATION  STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER  AMENDMENT  WHICH  SPECIFICALLY  STATES  THAT  THIS  REGISTRATION
STATEMENT SHALL  THEREAFTER  BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES  ACT OF 1933 OR UNTIL THIS  REGISTRATION  STATEMENT  SHALL BECOME
EFFECTIVE  ON SUCH  DATE  AS THE  SECURITIES  AND  EXCHANGE  COMMISSION,  ACTING
PURSUANT TO SAID SECTION 8(A), MAY DETERMINE.

================================================================================
<PAGE>


                              [LETTERHEAD OF IHS]

                                                              September   , 1997



Dear Stockholder:


     You are cordially  invited to attend a special meeting of stockholders (the
"IHS Special Meeting") of Integrated Health Services, Inc. ("IHS") to be held at
the executive offices of IHS, 10065 Red Run Boulevard,  Owings Mills,  Maryland,
at 10:00 a.m., local time, on , October , 1997.


     At the  meeting,  you will be asked to consider and vote upon a proposal to
approve and adopt an Agreement and Plan of Merger, dated as of July 6, 1997 (the
"Merger   Agreement"),   among  IHS,  IHS  Acquisition  XXIV,  Inc.,  a  Florida
corporation  and a  wholly-owned  subsidiary of IHS ("Merger  Sub"),  and RoTech
Medical Corporation, a Florida corporation ("RoTech"),  pursuant to which, among
other things,  (a) Merger Sub will merge with and into RoTech (the "Merger") and
RoTech will become a  wholly-owned  subsidiary  of IHS and (b) each  outstanding
share of common stock,  $.0002 par value per share,  of RoTech  ("RoTech  Common
Stock") will be converted into the right to receive, and each right to acquire a
share of RoTech Common Stock will be converted into the right to purchase, .5806
of a share of common stock,  $.001 par value per share (the "IHS Common Stock"),
of IHS (the "Exchange Ratio"), with cash paid in lieu of any fractional shares.

     Details of the proposed  Merger,  the Merger  Agreement and other important
information  regarding  IHS and RoTech are set forth in the  accompanying  Joint
Proxy  Statement/Prospectus,  which you are urged to review carefully. A copy of
the Merger Agreement is also attached to the Joint Proxy Statement/Prospectus as
Appendix A.

     Your Board of Directors has carefully  considered and unanimously  approved
the Merger  proposal and has  determined  that the Merger is fair to, and in the
best  interests  of,  IHS  and its  stockholders.  Accordingly,  the  IHS  Board
unanimously  recommends  that  stockholders  vote  FOR  approval  of the  Merger
Agreement.  The IHS Board of Directors has received a written  opinion dated the
date hereof of Donaldson, Lufkin & Jenrette Securities Corporation to the effect
that,  as of such date and based upon and subject to certain  matters  stated in
such opinion,  the Exchange Ratio was fair,  from a financial  point of view, to
the  holders of IHS Common  Stock.  A copy of such  opinion,  which sets forth a
description of the assumptions made, matters considered and limits on the review
undertaken,  is attached to the Joint Proxy  Statement/Prospectus  as Appendix B
and should be read carefully in its entirety.

     The acquisition of RoTech is an integral part of the implementation of IHS'
post-acute care network strategy.  IHS believes that its post-acute care network
positions it as an attractive  provider of  post-acute  care services to managed
care organizations.

     The   Board   of   Directors   appreciates   and   encourages   stockholder
participation. However, whether or not you plan to be with us at the IHS Special
Meeting,  it is  important  that your  shares be  represented.  Accordingly,  we
request that you sign, date and mail the enclosed proxy in the envelope provided
at your  earliest  convenience.  If you have multiple  stockholder  accounts and
receive more than one set of these materials,  please be sure to vote each proxy
and return it in the envelope provided.

   Thank you for your cooperation.


                                            Very truly yours,



                                            ROBERT N. ELKINS
                                            Chairman of the Board and
                                            Chief Executive Officer
<PAGE>

                       INTEGRATED HEALTH SERVICES, INC.
                            10065 Red Run Boulevard
                          Owings Mills, Maryland 21117


                              ------------------


                                   NOTICE OF
                        SPECIAL MEETING OF STOCKHOLDERS


                              ------------------



     A Special Meeting of Stockholders (the "IHS Special Meeting") of Integrated
Health  Services,  Inc.,  a Delaware  corporation  ("IHS"),  will be held at the
executive offices of IHS, 10065 Red Run Boulevard,  Owings Mills, Maryland, on ,
October , 1997, at 10:00 a.m., local time, for the following purposes:

   1. To consider and vote upon a proposal to approve and adopt an Agreement and
      Plan of Merger, dated as of July 6, 1997 (the "Merger  Agreement"),  among
      IHS, IHS Acquisition XXIV, Inc., a Florida  corporation and a wholly-owned
      subsidiary  of IHS  ("Merger  Sub"),  and RoTech  Medical  Corporation,  a
      Florida corporation ("RoTech"), pursuant to which, among other things, (a)
      Merger Sub will merge with and into RoTech (the  "Merger") and RoTech will
      become a wholly-owned  subsidiary of IHS and (b) each outstanding share of
      common  stock,  $.0002  par value per  share,  of RoTech  ("RoTech  Common
      Stock")  will be  converted  into the right to receive,  and each right to
      acquire a share of RoTech Common Stock will be converted into the right to
      purchase,  .5806 of a share of common stock, $.001 par value per share, of
      IHS, with cash paid in lieu of any fractional shares.

   2. To consider and take action upon any other  matter that may properly  come
      before the IHS Special Meeting or any adjournment or postponement thereof.

     The Board of Directors of IHS has unanimously  approved the Merger proposal
and has determined that the Merger is fair to, and in the best interests of, IHS
and its stockholders. Accordingly, the IHS Board unanimously recommends that you
vote FOR approval of the Merger Agreement.


     Stockholders  of  record at the close of business on September 1, 1997, are
entitled  to  notice  of,  and  to  vote  at,  the  IHS  Special Meeting, or any
adjournment or postponement thereof.


     Details of the Merger and other  important  information  concerning IHS and
RoTech   are   more   fully   described   in  the   accompanying   Joint   Proxy
Statement/Prospectus. Please give this information your careful consideration.

     WHETHER  OR NOT  YOU  PLAN  TO  ATTEND  THE IHS  SPECIAL  MEETING,  YOU ARE
REQUESTED  TO FILL IN, DATE AND SIGN THE ENCLOSED  PROXY,  WHICH IS SOLICITED BY
THE BOARD OF DIRECTORS OF IHS, AND TO MAIL IT PROMPTLY IN THE ENCLOSED ENVELOPE.
IF YOU DO ATTEND THE IHS  SPECIAL  MEETING  AND WISH TO VOTE IN PERSON,  YOU MAY
WITHDRAW YOUR PROXY AND VOTE YOUR SHARES PERSONALLY.

                                        By Order of the Board of Directors




                                        MARC B. LEVIN
                                        Secretary



Owings Mills, Maryland
September   , 1997

<PAGE>

                             [LETTERHEAD OF ROTECH]


                                                              September   , 1997



Dear Stockholder:


     You are cordially  invited to attend a special meeting of stockholders (the
"RoTech Special Meeting") of RoTech Medical Corporation ("RoTech") to be held at
SunTrust Bank, 200 South Orange Avenue,  Orlando,  Florida, at 10:00 a.m., local
time, on , October , 1997.

     At the  meeting,  you will be asked to consider and vote upon a proposal to
approve and adopt an Agreement and Plan of Merger, dated as of July 6, 1997 (the
"Merger  Agreement"),   among  Integrated  Health  Services,  Inc.,  a  Delaware
corporation  ("IHS"),  IHS Acquisition  XXIV, Inc., a Florida  corporation and a
wholly-owned  subsidiary of IHS ("Merger Sub"),  and RoTech,  pursuant to which,
among  other  things,  (a)  Merger  Sub will  merge  with and into  RoTech  (the
"Merger") and RoTech will become a  wholly-owned  subsidiary of IHS and (b) each
outstanding  share of  common  stock,  $.0002  par value  per  share,  of RoTech
("RoTech  Common Stock") will be converted  into the right to receive,  and each
right to acquire a share of RoTech Common Stock will be converted into the right
to purchase, .5806 of a share of common stock, $.001 par value per share, of IHS
(the "Exchange Ratio"), with cash paid in lieu of any fractional shares.


     Details of the proposed  Merger,  the Merger  Agreement and other important
information  regarding  IHS and RoTech are set forth in the  accompanying  Joint
Proxy  Statement/Prospectus,  which you are urged to review carefully. A copy of
the Merger Agreement is also attached to the Joint Proxy Statement/Prospectus as
Appendix A.

     Your Board of Directors has carefully  considered and unanimously  approved
the Merger  proposal and has  determined  that the Merger is fair to, and in the
best interests of, RoTech and its  stockholders.  Accordingly,  the RoTech Board
unanimously  recommends  that  stockholders  vote  FOR  approval  of the  Merger
Agreement.  The RoTech  Board of Directors  has received the written  opinion of
Smith  Barney Inc.  dated July 6, 1997 to the effect  that,  as of such date and
based upon and subject to certain  matters stated in such opinion,  the Exchange
Ratio was fair,  from a  financial  point of view,  to holders of RoTech  Common
Stock. A copy of the opinion of Smith Barney Inc. dated July 6, 1997 is attached
to the  Joint  Proxy  Statement/Prospectus  as  Appendix  C and  should  be read
carefully in its entirety.

     The   Board   of   Directors   appreciates   and   encourages   stockholder
participation.  However,  whether  or not you  plan to be with us at the  RoTech
Special Meeting,  it is important that your shares be represented.  Accordingly,
we  request  that you sign,  date and mail the  enclosed  proxy in the  envelope
provided at your earliest convenience. If you have multiple stockholder accounts
and receive  more than one set of these  materials,  please be sure to vote each
proxy and return it in the envelope provided.

     PLEASE  DO  NOT  SEND  ANY  SHARE  CERTIFICATES  AT  THIS  TIME.  FOLLOWING
CONSUMMATION  OF  THE  MERGER,  YOU  WILL  BE  GIVEN  INSTRUCTIONS REGARDING THE
PROCEDURE  WHEREBY  ROTECH  COMMON  STOCK  CERTIFICATES CAN BE EXCHANGED FOR IHS
COMMON STOCK.

   Thank you for your cooperation.

                                        Very truly yours,



                                        WILLIAM P. KENNEDY
                                        Chairman of the Board
<PAGE>

                          ROTECH MEDICAL CORPORATION
                             4506 L.B. McLeod Road
                             Orlando, Florida 32811

                              ------------------


                                   NOTICE OF
                        SPECIAL MEETING OF STOCKHOLDERS

                              ------------------



     A Special Meeting of Stockholders  (the "RoTech Special Meeting") of RoTech
Medical Corporation, a Florida corporation ("RoTech"),  will be held at SunTrust
Bank, 200 South Orange Avenue,  Orlando,  Florida, on , October , 1997, at 10:00
a.m., local time, for the following purposes:


   1. To consider and vote upon a proposal to approve and adopt an Agreement and
      Plan of Merger, dated as of July 6, 1997 (the "Merger  Agreement"),  among
      Integrated  Health Services,  Inc., a Delaware  corporation  ("IHS"),  IHS
      Acquisition   XXIV,  Inc.,  a  Florida   corporation  and  a  wholly-owned
      subsidiary of IHS ("Merger  Sub"),  and RoTech,  pursuant to which,  among
      other  things,  (a)  Merger  Sub will  merge  with and  into  RoTech  (the
      "Merger") and RoTech will become a wholly-owned  subsidiary of IHS and (b)
      each  outstanding  share of common stock,  $.0002 par value per share,  of
      RoTech  ("RoTech  Common  Stock")  will be  converted  into  the  right to
      receive,  and each right to acquire a share of RoTech Common Stock will be
      converted  into the right to purchase,  .5806 of a share of common  stock,
      $.001  par  value  per  share,  of  IHS,  with  cash  paid  in lieu of any
      fractional shares.

   2. To transact  such other  business as may  properly  come before the RoTech
      Special Meeting or any adjournment or postponement thereof.

     The Board of  Directors  of RoTech  has  unanimously  approved  the  Merger
proposal  and has  determined  that  the  Merger  is fair  to,  and in the  best
interests  of,  RoTech  and its  stockholders.  Accordingly,  the  RoTech  Board
unanimously recommends that you vote FOR approval of the Merger Agreement.


     Stockholders  of  record at the close of business on September 1, 1997, are
entitled  to  notice  of,  and  to  vote  at, the RoTech Special Meeting, or any
adjournment or postponement thereof.


     Details of the Merger and other  important  information  concerning IHS and
RoTech   are   more   fully   described   in  the   accompanying   Joint   Proxy
Statement/Prospectus. Please give this information your careful consideration.

     WHETHER  OR NOT YOU PLAN TO ATTEND  THE  ROTECH  SPECIAL  MEETING,  YOU ARE
REQUESTED  TO FILL IN, DATE AND SIGN THE ENCLOSED  PROXY,  WHICH IS SOLICITED BY
THE BOARD OF  DIRECTORS  OF  ROTECH,  AND TO MAIL IT  PROMPTLY  IN THE  ENCLOSED
ENVELOPE.  IF YOU DO  ATTEND  THE  ROTECH  SPECIAL  MEETING  AND WISH TO VOTE IN
PERSON, YOU MAY WITHDRAW YOUR PROXY AND VOTE YOUR SHARES PERSONALLY.

                                        By Order of the Board of Directors


                                        William A. Walker II
                                        Secretary


Orlando, Florida
September   , 1997

<PAGE>


                             JOINT PROXY STATEMENT
                                       OF





<TABLE>
<S>                                    <C>
  INTEGRATED HEALTH SERVICES, INC.      ROTECH MEDICAL CORPORATION
              FOR THE SPECIAL                 FOR THE SPECIAL
       MEETING OF STOCKHOLDERS            MEETING OF STOCKHOLDERS
    TO BE HELD ON OCTOBER   , 1997     TO BE HELD ON OCTOBER   , 1997
</TABLE>


                              -----------------


                                   PROSPECTUS
                                       OF
                       INTEGRATED HEALTH SERVICES, INC.
                              -----------------

     THIS JOINT PROXY  STATEMENT/PROSPECTUS  RELATES TO UP TO 19,625,323  SHARES
OF THE COMMON  STOCK,  PAR VALUE $.001 PER SHARE  (TOGETHER  WITH THE  PREFERRED
STOCK  PURCHASE  RIGHTS  ASSOCIATED  THEREWITH,  THE  "IHS  COMMON  STOCK"),  OF
INTEGRATED  HEALTH  SERVICES,  INC.  (TOGETHER  WITH ITS  SUBSIDIARIES,  "IHS"),
ISSUABLE  TO  THE  STOCKHOLDERS  OF  ROTECH  MEDICAL   CORPORATION,   A  FLORIDA
CORPORATION  ("ROTECH"),  UPON  CONSUMMATION OF THE MERGER (AS DEFINED  HEREIN).
SUCH  NUMBER OF SHARES  REPRESENTS  THE  MAXIMUM  NUMBER OF SHARES  THAT WILL BE
ISSUED IN THE MERGER.

                              -----------------



     This Joint  Proxy  Statement/Prospectus  describes  the terms of a proposed
business combination between IHS and RoTech,  pursuant to which IHS will acquire
RoTech by means of the merger (the "Merger") of IHS  Acquisition  XXIV,  Inc., a
Florida  corporation and a wholly-owned  subsidiary of IHS ("Merger Sub"),  with
and into RoTech, with RoTech being the surviving corporation.  After the Merger,
the combined  operations  of IHS and RoTech are  expected to be  conducted  with
RoTech as a subsidiary of IHS. Upon consummation of the Merger,  each issued and
outstanding  share of common stock,  par value $.0002 per share,  of RoTech (the
"RoTech  Common Stock" and,  sometimes,  collectively  referred to herein as the
"RoTech Shares") will automatically be converted into the right to receive .5806
shares of IHS Common Stock (the "Exchange Ratio"). On September , 1997, the last
trading  day prior to the date of this  Joint  Proxy  Statement/Prospectus,  the
closing  price of RoTech  Common Stock as reported on The Nasdaq Stock  Market's
National  Market (the "Nasdaq  National  Market") was $ and the closing price of
IHS Common  Stock as reported on the New York Stock  Exchange  (the  "NYSE") was
$_____.  At such price,  the equivalent  value of a share of RoTech Common Stock
would  be  $_____,  calculated  based on the  Exchange  Ratio  (the  "Equivalent
Value"),   and  the  aggregate  Merger   consideration  would  be  approximately
$_____________  (based on 26,439,322 shares of RoTech Common Stock oustanding on
September  , 1997,  the last  business  day before the date of this Joint  Proxy
Statement/Prospectus). The actual market price of the IHS Common Stock may vary,
which  will  cause  a  corresponding  change  in the  Equivalent  Value  and the
aggregate Merger  consideration.  Additionally,  the Equivalent Value may differ
from the actual market price of RoTech Common Stock.  Each  stockholder is urged
to obtain  updated market  information.  RoTech  stockholders  will receive cash
(without  interest) in lieu of fractional shares of IHS Common Stock. For a more
complete description of the terms of the Merger, see "The Merger."

     This Joint Proxy Statement/Prospectus is being furnished in connection with
the Special Meetings of Stockholders of IHS and RoTech (the "Special Meetings").
All information  contained or incorporated herein with respect to IHS and Merger
Sub has been  furnished by IHS, and all  information  with respect to RoTech has
been furnished by RoTech. This Joint Proxy Statement/Prospectus also constitutes
the Prospectus of IHS filed as a part of the Registration  Statement (as defined
herein). See "Available Information."

     The  Merger  will be  effected  pursuant  to the terms and  subject  to the
conditions of the Agreement and Plan of Merger,  dated as of July 6, 1997, among
IHS,  Merger Sub and RoTech (the "Merger  Agreement").  The Merger  Agreement is
attached  to  this  Joint  Proxy  Statement/Prospectus  as  Appendix  A  and  is
incorporated herein by reference.

     THE  PROPOSED  MERGER  IS  A  COMPLEX  TRANSACTION. STOCKHOLDERS OF IHS AND
ROTECH   ARE   URGED   TO   READ   AND   CONSIDER  CAREFULLY  THIS  JOINT  PROXY
STATEMENT/PROSPECTUS IN ITS ENTIRETY.



     SEE "RISK  FACTORS"  BEGINNING AT PAGE 27 FOR A DISCUSSION  OF CERTAIN RISK
FACTORS RELATED TO THE MERGER, IHS AND ROTECH.


THE  SECURITIES  TO BE  ISSUED  HAVE NOT BEEN  APPROVED  OR  DISAPPROVED  BY THE
SECURITIES AND EXCHANGE  COMMISSION OR ANY STATE  SECURITIES  COMMISSION NOR HAS
THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED
UPON THE ACCURACY OR ADEQUACY OF THIS JOINT PROXY STATEMENT/PROSPECTUS.
           ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


     This  Joint  Proxy  Statement/Prospectus  and the  forms of Proxy are first
being mailed to IHS and RoTech stockholders on or about September , 1997.

    THE DATE OF THIS JOINT PROXY STATEMENT/PROSPECTUS IS SEPTEMBER   , 1997.

<PAGE>

                               TABLE OF CONTENTS






<TABLE>
<CAPTION>
                                                                                          PAGE
                                                                                          -----
<S>                                                                                       <C>
AVAILABLE INFORMATION   ...............................................................      2
PRIVATE SECURITIES LITIGATION REFORM ACT SAFE HARBOR STATEMENT ........................      2
INCORPORATION OF CERTAIN INFORMATION BY REFERENCE  ....................................      3
SUMMARY OF JOINT PROXY STATEMENT/PROSPECTUS  ..........................................      5
  The Companies   .....................................................................      5
  The Merger   ........................................................................      8
  Risk Factors    .....................................................................     16
  The Special Meetings  ...............................................................     16
  Market and Market Prices; Dividends  ................................................     19
  Comparative Per Share Information    ................................................     21
  Selected Historical Financial Information  ..........................................     22
  Summary Unaudited Pro Forma Financial Information   .................................     25
RISK FACTORS   ........................................................................     27
  Risks Related to Substantial Indebtedness  ..........................................     27
  Risks Associated with Growth Through Acquisitions and Internal Development  .........     28
  Risks Related to Managed Care Strategy  .............................................     29
  Risks Related to Capital Requirements   .............................................     29
  Risks Related to the Merger and Recent Acquisitions    ..............................     30
  Risks Related to Historical Financial Performance of First American   ...............     31
  Reliance on Reimbursement by Third Party Payors  ....................................     31
  Risk of Adverse Effect of Healthcare Reform   .......................................     32
  Uncertainty of Government Regulation    .............................................     33
  Competition  ........................................................................     35
  Effect of Certain Anti-Takeover Provisions    .......................................     35
  Possible Volatility of Stock Price; Fixed Exchange Ratio  ...........................     35
  Dilution of Voting Power of IHS Stockholders  .......................................     36
  Benefits of the Merger to Certain Officers, Directors and Affiliates of RoTech ......     36
  Risks Related to Federal Income Tax Consequences ....................................     37
IHS RECENT DEVELOPMENTS    ............................................................     38
  New Credit Facility   ...............................................................     38
  Proposed Acquisitions ...............................................................     38
  First American Acquisition  .........................................................     40
  Other Acquisitions and Divestitures  ................................................     41
  Repurchase of 9 5/8% Senior Subordinated Notes and 10 3/4% Senior Subordinated Notes      42
  Sale of 9 1/2% Senior Subordinated Notes due 2007 ...................................     42
  Sale of 9 1/4% Senior Subordinated Notes due 2008 ...................................     42
ROTECH RECENT DEVELOPMENTS ............................................................     43
  Preliminary Year End Results  .......................................................     43
  Acquisitions  .......................................................................     43
THE SPECIAL MEETINGS    ...............................................................     44
  General   ...........................................................................     44
  Purpose of the Special Meetings   ...................................................     44
  Dates, Places and Times  ............................................................     44
  Record Dates; Quorums    ............................................................     44
  Votes Required  .....................................................................     45
  Voting and Revocation of Proxies  ...................................................     45
  Solicitation of Proxies  ............................................................     46
THE MERGER  ...........................................................................     47
  Terms of the Merger   ...............................................................     47
  Background of the Merger    .........................................................     48
  Recommendations of the Boards of Directors    .......................................     50
  Opinions of Financial Advisors    ...................................................     53
  Regulatory Approvals  ...............................................................     61
  NYSE Listing    .....................................................................     62
  Limitations on Resale of IHS Common Stock by Affiliates   ...........................     62
  Additional Interests of Certain Persons in the Merger  ..............................     63
  Accounting Treatment  ...............................................................     65
  Certain Federal Income Tax Consequences    ..........................................     65
  No Appraisal Rights   ...............................................................     66
  RoTech Debentures  ..................................................................     66
THE MERGER AGREEMENT    ...............................................................     67
  The Merger   ........................................................................     67
  Effective Time and Effects of the Merger   ..........................................     67
  Conversion of RoTech Shares    ......................................................     67
  No Fractional Shares of IHS Common Stock   ..........................................     67
  Exchange of Share Certificates    ...................................................     68
  Treatment of RoTech Stock Options ...................................................     69
  Representations and Warranties    ...................................................     70
  Conditions to the Merger    .........................................................     70
  Conduct of RoTech Business Pending the Merger; Other Covenants  .....................     71
  No Solicitation    ..................................................................     73
</TABLE>


                                       i
<PAGE>



<TABLE>
<CAPTION>
                                                                                         PAGE
                                                                                         -----
<S>                                                                                      <C>
  Termination    .....................................................................      73
  Expenses and Termination Fees    ...................................................      74
  Waiver and Amendment    ............................................................      75
  Indemnification; Insurance    ......................................................      75
UNAUDITED PRO FORMA FINANCIAL INFORMATION   ..........................................      76
  Pro Forma Financial Information for the Combined Company ...........................      76
  Pro Forma Financial Information for the Combined Company and Other Acquisitions and
  Divestitures .......................................................................      82
  Pro Forma Financial Information for RoTech   .......................................      90
BUSINESS OF IHS  .....................................................................      96
  General Overview  ..................................................................      96
  Industry Background  ...............................................................      97
  Company Strategy  ..................................................................      99
  Patient Services  ..................................................................     101
  Management and Other Services    ...................................................     104
  Quality Assurance    ...............................................................     104
  Operations  ........................................................................     105
  Joint Ventures    ..................................................................     105
  Sources of Revenue   ...............................................................     105
  Government Regulation   ............................................................     107
  Federal and State Assistance Programs  .............................................     109
  Competition    .....................................................................     111
  Employees   ........................................................................     112
  Insurance   ........................................................................     112
  Legal Proceedings ..................................................................     112
BUSINESS OF ROTECH  ..................................................................     113
  General  ...........................................................................     113
  Operating and Expansion Strategy ...................................................     113
  Sales and Marketing  ...............................................................     113
  Reimbursement for Services .........................................................     114
  Products and Services   ............................................................     114
  Government Regulation   ............................................................     116
  Competition ........................................................................     118
  Insurance   ........................................................................     118
  Legal Proceedings ..................................................................     119
DESCRIPTION OF IHS CAPITAL STOCK   ...................................................     120
  Authorized Capital Stock   .........................................................     120
  IHS Common Stock  ..................................................................     120
  IHS Preferred Stock  ...............................................................     120
  Options, Warrants and Convertible Debentures .......................................     120
  Certain Provisions of IHS' By-Laws and the DGCL    .................................     121
  IHS Stockholders' Rights Plan    ...................................................     121
  Limitations on Liability of Officers and Directors    ..............................     124
  Transfer Agent and Registrar  ......................................................     124
COMPARISON OF RIGHTS OF IHS AND ROTECH STOCKHOLDERS  .................................     124
  Classes and Series of Capital Stock    .............................................     124
  Size and Election of the Board of Directors  .......................................     125
  Amendment or Repeal of the Certificate of Incorporation and By-Laws  ...............     125
  Special Meetings of Stockholders    ................................................     126
  Advance Notice Provisions for Stockholder Proposals and Stockholder Nominations of
  Directors ..........................................................................     126
  Indemnification of Directors and Officers    .......................................     127
DESCRIPTION OF CERTAIN IHS INDEBTEDNESS  .............................................     129
  New Credit Facility  ...............................................................     129
  5 3/4% Convertible Senior Subordinated Debentures due 2001  ........................     130
  6% Convertible Subordinated Debentures due 2003    .................................     130
  9 1/4% Senior Subordinated Notes due 2008  ..........................................    130
  9 1/2% Senior Subordinated Notes due 2007  ..........................................    131
  10 1/4% Senior Subordinated Notes due 2006 ..........................................    131
  10 3/4% Senior Subordinated Notes due 2004   .......................................     132
  9 5/8% Senior Subordinated Notes due 2002, Series A   ..............................     132
  Certain Other Obligations  .........................................................     132
EXPERTS    ...........................................................................     133
LEGAL MATTERS    .....................................................................     134
ADDITIONAL INFORMATION    ............................................................     134
  Stockholder Proposals   ............................................................     134
  Other Business    ..................................................................     134
APPENDICES:
A. Agreement and Plan of Merger, dated as of July 6, 1997  ...........................    A-1
B. Opinion of Donaldson, Lufkin & Jenrette Securities Corporation   ..................    B-1
C. Opinion of Smith Barney Inc.    ...................................................    C-1
</TABLE>


                                       ii
<PAGE>

     NO PERSONS  HAVE BEEN  AUTHORIZED  TO GIVE ANY  INFORMATION  OR TO MAKE ANY
REPRESENTATION,    OTHER   THAN   THOSE    CONTAINED   IN   THIS   JOINT   PROXY
STATEMENT/PROSPECTUS,  IN  CONNECTION  WITH THE  SOLICITATION  OF PROXIES OR THE
OFFERING OF SHARES OF IHS COMMON  STOCK MADE HEREBY AND, IF GIVEN OR MADE,  SUCH
INFORMATION OR REPRESENTATION  MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED
BY IHS, ROTECH OR ANY OTHER PERSON. THIS JOINT PROXY  STATEMENT/PROSPECTUS  DOES
NOT  CONSTITUTE  AN OFFER TO SELL,  OR A  SOLICITATION  OF AN OFFER TO BUY,  ANY
SECURITIES,  OR THE  SOLICITATION OF A PROXY, IN ANY JURISDICTION TO OR FROM ANY
PERSON TO WHOM IT IS NOT LAWFUL TO MAKE ANY SUCH OFFER OR  SOLICITATION  IN SUCH
JURISDICTION.  NEITHER THE DELIVERY OF THIS JOINT PROXY STATEMENT/PROSPECTUS NOR
ANY  DISTRIBUTION  OF SECURITIES  MADE HEREUNDER  SHALL UNDER ANY  CIRCUMSTANCES
CREATE AN  IMPLICATION  THAT  THERE HAS BEEN NO CHANGE IN THE  AFFAIRS OF IHS OR
ROTECH SINCE THE DATE HEREOF OR THAT THE INFORMATION HEREIN IS CORRECT AS OF ANY
TIME SUBSEQUENT TO THE DATE HEREOF.



                             AVAILABLE INFORMATION

     Each of IHS and RoTech is subject to the informational  requirements of the
Securities  Exchange  Act of 1934,  as amended  (the  "Exchange  Act"),  and, in
accordance therewith, files reports, proxy statements and other information with
the Securities and Exchange  Commission (the "Commission").  The reports,  proxy
statements  and  other  information  filed  by each of IHS and  RoTech  with the
Commission  can be  inspected  and  copied at the  public  reference  facilities
maintained by the Commission at Room 1024, 450 Fifth Street,  N.W.,  Washington,
D.C. 20549,  and at the  Commission's  Regional Offices at 7 World Trade Center,
13th Floor,  New York,  New York 10048,  and Citicorp  Center,  500 West Madison
Street, Suite 1400, Chicago, Illinois 60661. Copies of such material also may be
obtained by mail from the Public Reference Section of the Commission, Room 1024,
450 Fifth  Street,  N.W.,  Washington,  D.C.  20549,  at  prescribed  rates.  In
addition,  reports,  proxy materials and other information concerning IHS may be
inspected at the offices of the NYSE, 20 Broad Street, New York, New York 10005,
and reports,  proxy  materials and other  information  concerning  RoTech may be
inspected at the reading room of the National Association of Securities Dealers,
Inc., 1735 K Street, N.W., Washington, D.C. 20006. Additionally,  the Commission
maintains  a  Web  site  on  the  Internet  that  contains  reports,  proxy  and
information  statements and other information regarding  registrants,  including
IHS and RoTech, that file electronically with the Commission and that is located
at http://www.sec.gov.

     IHS has filed with the  Commission  a  Registration  Statement  on Form S-4
(together with any amendments thereto,  the "Registration  Statement") under the
Securities Act of 1933, as amended (the  "Securities  Act"),  which includes the
joint proxy statement of IHS and RoTech with respect to the Special Meetings and
the Merger and the  prospectus  of IHS with  respect to the shares of IHS Common
Stock  issuable in the Merger.  This Joint Proxy  Statement/Prospectus  does not
contain all the information  set forth in the  Registration  Statement,  certain
portions of which are omitted in accordance  with the rules and  regulations  of
the  Commission  and to which  portions  reference  is made  hereby for  further
information  with respect to IHS,  RoTech,  the Merger,  the securities  offered
hereby  and  related   matters.   Statements   contained  in  this  Joint  Proxy
Statement/Prospectus  as to the  contents of any  contract,  agreement  or other
document  referred to are not  necessarily  complete.  With respect to each such
contract,  agreement or other document  filed as an exhibit to the  Registration
Statement  or  otherwise  filed with the  Commission,  reference  is made to the
exhibit or other filing for a more complete  description of the matter involved,
and each  such  statement  shall be deemed  qualified  in its  entirety  by such
reference.  Copies of the Registration  Statement  together with exhibits may be
inspected at the office of the  Commission  in  Washington,  D.C.,  as indicated
above,  without charge and copies thereof may be obtained therefrom upon payment
of a prescribed fee.



                    PRIVATE SECURITIES LITIGATION REFORM ACT
                             SAFE HARBOR STATEMENT

     This Joint Proxy Statement/Prospectus (including the documents incorporated
by reference herein) contains certain  forward-looking  statements (as such term
is  defined  in the  Private  Securities  Litigation  Reform  Act of  1995)  and
information  relating to IHS, RoTech and the combined  company that are based on
the  beliefs of the  managements  of IHS or RoTech,  as  applicable,  as well as
assump-


                                       2
<PAGE>

tions made by and information  currently available to the managements of IHS and
RoTech, as applicable. When used in this Joint Proxy  Statement/Prospectus,  the
words "estimate,"  "project,"  "believe,"  "anticipate,"  "intend," "expect" and
similar expressions are intended to identify  forward-looking  statements.  Such
statements  reflect  the current  views of IHS or RoTech,  as  applicable,  with
respect to future events and are subject to risks and  uncertainties,  including
those  discussed under "Risk Factors," that could cause actual results to differ
materially from those contemplated in such forward-looking  statements.  Readers
are cautioned not to place undue reliance on these  forward-looking  statements,
which speak only as of the date hereof.  Neither IHS nor RoTech  undertakes  any
obligation to publicly release any revisions to these forward-looking statements
to reflect  events or  circumstances  after the date  hereof or to  reflect  the
occurrence of unanticipated events.


               INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

     The information in the following documents filed by IHS with the Commission
(File No. 1-12306)  pursuant to the Exchange Act is incorporated by reference in
this Joint Proxy Statement/Prospectus:

        1.Annual  Report  on Form  10-K for the year  ended  December  31,  1996
          (which  incorporates by reference certain  information from IHS' Proxy
          Statement relating to its 1997 Annual Meeting of Stockholders);

        2. Quarterly  Report on Form 10-Q for the fiscal quarter ended March 31,
          1997;

        3. Quarterly  Report  on Form 10-Q for the fiscal quarter ended June 30,
          1997;

        4.Current  Report on Form 8-K  dated  October  17,  1996  reporting  the
          acquisition of First American Health Care of Georgia, Inc., as amended
          by Form 8-K/A  filed  November  26, 1996 and  Amendment  No. 1 to Form
          8-K/A filed July 11, 1997;

        5.Current  Report on Form 8-K  dated  October  19,  1996  reporting  the
          execution  of  the  Agreement  and  Plan  of  Merger  among  IHS,  IHS
          Acquisition  XIX, Inc. and Coram  Healthcare  Corporation  (the "Coram
          Merger  Agreement"),  as amended by Form 8-K/A filed  April 11,  1997,
          reporting the termination of the Coram Merger Agreement;

        6.Current  Report  on  Form  8-K  dated  May  23,  1997  reporting  IHS'
          agreement to issue  privately  an aggregate of $450 million  principal
          amount of its 9 1/2% Senior Subordinated Notes due 2007;

        7.Current  Report  on Form 8-K  dated May 30,  1997  reporting  (i) IHS'
          issuance of an  aggregate of $450  million  principal  amount of its 9
          1/2% Senior  Subordinated  Notes due 2007 and (ii) IHS' acceptance for
          payment of an aggregate of $114,975,000 principal amount of its 9 5/8%
          Senior  Subordinated  Notes due  2002,  Series A and an  aggregate  of
          $99,893,000  principal amount of its 10 3/4% Senior Subordinated Notes
          due 2004 pursuant to cash tender offers;

        8.Current  Report  on  Form  8-K  dated  July  6,  1997  reporting   the
          execution of the Merger Agreement;


        9.Current  Report on Form 8-K dated  September  9, 1997  reporting  IHS'
          agreement to issue  privately  an aggregate of $500 million  principal
          amount of its 9 1/4% Senior Subordinated Notes due 2008;

       10. The  description  of the IHS Common Stock contained in Item 1 of IHS'
          Registration Statement on Form 8-A dated September 1, 1993; and

       11.The description of IHS' Preferred  Stock Purchase Rights  contained in
          Item 1 of IHS' Registration  Statement on Form 8-A dated September 28,
          1995.



                                       3
<PAGE>

     The  information  in the  following  documents  filed  by  RoTech  with the
Commission  (File No.  0-14003)  pursuant to the Exchange Act is incorporated by
reference in this Joint Proxy Statement/Prospectus:

       1.Annual  Report on Form 10-K for the fiscal year ended July 31, 1996, as
         amended by Form 10-K/A filed  November 8, 1996 (which  incorporates  by
         reference certain information from RoTech's Proxy Statement relating to
         its 1996 Annual Meeting of Stockholders);

       2.Quarterly  Report  on  Form  10-Q for the fiscal quarter ended  October
         31, 1996;

       3.Quarterly  Report  on  Form  10-Q for  the fiscal quarter ended January
         31, 1997;

       4.Quarterly  Report  on Form 10-Q for the fiscal quarter  ended April 30,
         1997;

       5.Current  Report on Form 8-K dated May 28, 1997 reporting the settlement
         with the U.S.  Attorney  for the Middle  District of Florida in a civil
         action  relating  to  Medicare  claims  the  United  States  Government
         believes it erroneously paid between 1987 and 1989;


       6.Current  Report on  Form 8-K dated July 6, 1997 reporting the execution
         of the Merger Agreement; and

       7.Current Report on Form 8-K dated September 17, 1997 reporting  earnings
         for the fourth quarter and year ended July 31, 1997.


     All documents filed by IHS and RoTech pursuant to Sections 13(a), 13(c), 14
or  15(d)  of  the   Exchange   Act   after  the  date  of  this   Joint   Proxy
Statement/Prospectus  and prior to the date of its  respective  Special  Meeting
shall  be  deemed  to  be   incorporated   by  reference  in  this  Joint  Proxy
Statement/Prospectus and to be a part hereof from the respective dates of filing
of such  documents.  Any  statement  contained  herein or in a previously  filed
document  incorporated or deemed to be incorporated by reference herein shall be
deemed  to  be  modified  or  superseded   for  purposes  of  this  Joint  Proxy
Statement/Prospectus  to the extent that a statement  contained herein or in any
other subsequently filed document which also is or was deemed to be incorporated
by reference herein modifies or supersedes such statement. Any such statement so
modified or superseded shall not be deemed, except as so modified or superseded,
to constitute a part of this Joint Proxy Statement/Prospectus.

     The  information  relating to IHS and RoTech  contained in this Joint Proxy
Statement/Prospectus  should  be  read  together  with  the  information  in the
documents incorporated by reference.


     THIS  JOINT  PROXY STATEMENT/PROSPECTUS INCORPORATES BY REFERENCE DOCUMENTS
WHICH  ARE  NOT  PRESENTED  HEREIN  OR DELIVERED HEREWITH. SUCH DOCUMENTS (OTHER
THAN   EXHIBITS   TO  SUCH  DOCUMENTS  UNLESS  SUCH  EXHIBITS  ARE  SPECIFICALLY
INCORPORATED   BY  REFERENCE)  ARE  AVAILABLE  WITHOUT  CHARGE  TO  ANY  PERSON,
INCLUDING  ANY  BENEFICIAL  OWNER, TO WHOM THIS JOINT PROXY STATEMENT/PROSPECTUS
IS  DELIVERED,  UPON WRITTEN OR ORAL REQUEST. REQUESTS FOR SUCH DOCUMENTS SHOULD
BE  DIRECTED, IN THE CASE OF IHS DOCUMENTS, TO INTEGRATED HEALTH SERVICES, INC.,
10065  RED  RUN  BOULEVARD,  OWINGS  MILLS,  MARYLAND  21117, ATTENTION: MARC B.
LEVIN,  TELEPHONE:  (410)  998-8400,  AND,  IN  THE CASE OF ROTECH DOCUMENTS, TO
ROTECH  MEDICAL  CORPORATION,  4506  L.B. MCLEOD ROAD, SUITE F, ORLANDO, FLORIDA
32811,  ATTENTION:  REBECCA  R.  IRISH,  TELEPHONE:  (407) 841-2115. IN ORDER TO
ENSURE  TIMELY DELIVERY OF THE DOCUMENTS PRIOR TO THE SPECIAL MEETINGS, ANY SUCH
REQUESTS SHOULD BE MADE BY OCTOBER   , 1997.



                                       4
<PAGE>

                  SUMMARY OF JOINT PROXY STATEMENT/PROSPECTUS

     The following is a summary of certain  information  contained  elsewhere in
this Joint Proxy  Statement/Prospectus.  Certain  capitalized terms used in this
Summary are defined  elsewhere  in this Joint Proxy  Statement/Prospectus.  This
Summary is not, and is not intended to be, complete by itself. Reference is made
to,  and this  Summary  is  qualified  in its  entirety  by,  the more  detailed
information contained in this Joint Proxy  Statement/Prospectus,  the Appendices
hereto  and  the  documents  and  information  referred  to or  incorporated  by
reference  herein.  Stockholders of IHS and RoTech are urged to review carefully
all of the information contained in this Joint Proxy  Statement/Prospectus,  the
Merger Agreement and the other Appendices hereto.


                                 THE COMPANIES


INTEGRATED HEALTH SERVICES, INC.


     Integrated  Health  Services,  Inc.  ("IHS") is one of the nation's leading
providers of post-acute healthcare services. Post-acute care is the provision of
a continuum of care to patients following discharge from an acute care hospital.
IHS' post-acute care services include subacute care, home care,  skilled nursing
facility  care  and  inpatient  and  outpatient   rehabilitation,   hospice  and
diagnostic  services.  IHS'  post-acute  care network is designed to address the
fact that the cost  containment  measures  implemented  by private  insurers and
managed care  organizations  and  limitations  on  government  reimbursement  of
hospital  costs have resulted in the discharge  from  hospitals of many patients
who  continue  to require  medical  and  rehabilitative  care.  IHS'  post-acute
healthcare system is intended to provide  cost-effective  continuity of care for
its  patients  in  multiple  settings  and enable  payors to  contract  with one
provider to provide all of a patient's needs following discharge from acute care
hospitals.  IHS believes that its post-acute care network can be extended beyond
post-acute care to also provide  "pre-acute"  care,  i.e.,  services to patients
which reduce the likelihood of a need for a hospital stay.  IHS' post-acute care
network  currently  consists of  approximately  1,050  service  locations  in 45
states.

     IHS'  post-acute  care  network  strategy  is  to  provide   cost-effective
continuity of care for its patients in multiple  settings,  using geriatric care
facilities  as  platforms  to provide a wide  variety of  subacute  medical  and
rehabilitative  services  more  typically  delivered in the acute care  hospital
setting and using home  healthcare to provide  those medical and  rehabilitative
services which do not require  24-hour  monitoring.  To implement its post-acute
care  network  strategy,  IHS has  focused  on (i)  expanding  the range of home
healthcare  and  related  services  it offers to  patients  directly in order to
provide patients with a continuum of care throughout  their recovery,  to better
control  costs and to meet the growing  desire by payors for one-stop  shopping;
(ii)  developing  market  concentration  for its  post-acute  care  services  in
targeted  states  due  to  increasing  payor  consolidation  and  the  increased
preference of payors,  physicians and patients for dealing with only one service
provider;  and (iii)  developing  subacute  care  units.  Given  the  increasing
importance of managed care in the healthcare  marketplace and the continued cost
containment  pressures from Medicare,  Medicaid and private payors, IHS has been
restructuring its operations to enable IHS to focus on obtaining  contracts with
managed care organizations and to provide capitated  services.  IHS' strategy is
to become a preferred  or  exclusive  provider of  post-acute  care  services to
managed care organizations and other payors.

     In  implementing  its post-acute  care network  strategy,  IHS has recently
focused  on  expanding  its  home  healthcare  services  to  take  advantage  of
healthcare  payors'  increasing  focus  on  having  healthcare  provided  in the
lowest-cost  setting possible,  recent advances in medical technology which have
facilitated the delivery of medical services in alternative  sites and patients'
desires to be treated at home.  Consistent  with IHS'  strategy,  IHS in October
1996 acquired First American Health Care of Georgia, Inc. ("First American"),  a
provider  of home  health  services,  principally  home  nursing,  in 21 states,
primarily Alabama, California, Florida, Georgia, Michigan, Pennsylva- 


                                       5
<PAGE>


nia and Tennessee.  See "IHS Recent  Developments."  IHS intends to use the home
healthcare  setting and the delivery franchise of its home healthcare branch and
agency network to (i) deliver  sophisticated care, such as skilled nursing care,
home infusion therapy and rehabilitation,  outside the hospital or nursing home;
(ii) serve as an entry point for patients into the IHS post-acute  care network;
and  (iii)  provide  a  cost-effective  site for  case  management  and  patient
direction.

     In order to expand further its home healthcare  services,  IHS in July 1997
entered  into the  Merger  Agreement  to  acquire  RoTech,  a  provider  of home
healthcare  products and services,  with an emphasis on home  respiratory,  home
medical  equipment and infusion  therapy,  principally  to patients in non-urban
areas.  In  August  1997,  IHS  agreed to  acquire  (the  "Proposed  Lithotripsy
Acquisition")  the lithotripsy  division (the "Coram  Lithotripsy  Division") of
Coram Healthcare Corporation ("Coram"),  which provides lithotripsy services and
equipment  maintenance  in 180  locations  in 18 states,  in order to expand the
mobile diagnostic treatment and services it offers to patients, payors and other
providers.  Lithotripsy is a non-invasive technique that utilizes shock waves to
disintegrate kidney stones. In August 1997, IHS also agreed to acquire Community
Care of America,  Inc.  ("CCA"),  which  develops and operates  skilled  nursing
facilities  in  medically  underserved  rural  communities  (the  "Proposed  CCA
Acquisition"). IHS believes that CCA will broaden its post-acute care network to
include more rural markets and will  complement its existing home care locations
in rural markets as well as RoTech's  business.  See "IHS Recent  Developments -
Proposed Acquisitions," "The Merger" and "Business of RoTech." 

     IHS provides subacute care through medical specialty units ("MSUs"),  which
are typically 20 to 75 bed specialty units with physical identities, specialized
medical  technology and staffs  separate from the geriatric  care  facilities in
which they are  located.  MSUs are  designed  to provide  comprehensive  medical
services to patients who have been  discharged from acute care hospitals but who
still require subacute or complex medical  treatment.  The levels and quality of
care provided in IHS' MSUs are similar to those  provided in the hospital but at
per diem  treatment  costs which IHS believes are generally 30% to 60% below the
cost of such  care in  acute  care  hospitals.  Because  of the  high  level  of
specialized care provided,  IHS' MSUs generate  substantially higher net revenue
and operating profit per patient day than traditional geriatric care services.


     IHS presently  operates 172 geriatric care  facilities (116 owned or leased
and 56 managed) and 158 MSUs located  within 84 of these  facilities.  Specialty
medical  services  revenues,  which  include all MSU  charges,  all revenue from
providing  rehabilitative  therapies,  pharmaceuticals,   medical  supplies  and
durable medical equipment to all its patients,  all revenue from its Alzheimer's
programs and all revenue from its provision of pharmacy, rehabilitation therapy,
home healthcare, hospice care and similar services to third-parties, constituted
approximately  57%, 65% and 70% of net revenues  during the years ended December
31,  1994,  1995 and 1996,  respectively.  IHS also offers a wide range of basic
medical  services as well as a  comprehensive  array of  respiratory,  physical,
speech,   occupational  and  physiatric   therapy  in  all  its  geriatric  care
facilities.  For the year ended  December  31, 1996,  approximately  17% of IHS'
revenues were derived from home health and hospice care,  approximately 53% were
derived  from  subacute and other  ancillary  services,  approximately  27% were
derived from  traditional  basic nursing  services,  and  approximately  3% were
derived from  management and other  services.  On a pro forma basis after giving
effect to the Merger and the acquisition of First  American,  for the year ended
December 31, 1996,  approximately  44% of IHS'  revenues  were derived from home
health and hospice care,  approximately 36% were derived from subacute and other
ancillary  services,  approximately  18% were  derived  from  traditional  basic
nursing  home  services  and the  remaining  approximately  2% were derived from
management and other services.


     Integrated  Health  Services,  Inc.  was  incorporated  in  March 1986 as a
Pennsylvania  corporation  and reorganized as a Delaware corporation in November
1986.  IHS'  principal executive offices are located at 10065 Red Run Boulevard,
Owings  Mills, Maryland 21117 and its telephone number is (410) 998-8400. Unless
the  context  indicates  otherwise,  the  term  "IHS" includes Integrated Health
Services, Inc. and its subsidiaries.


                                       6
<PAGE>

ROTECH MEDICAL CORPORATION


     RoTech  Medical   Corporation   provides   comprehensive  home  healthcare,
principally  to patients in  non-urban  areas.  RoTech  currently  operates  631
locations in 36 states. RoTech's home healthcare business provides a diversified
range of products  and  services,  with an emphasis  on home  respiratory,  home
medical  equipment  and  infusion  therapy.  RoTech has  pursued  an  aggressive
acquisition  strategy since 1988, which included in the year ended July 31, 1997
acquisitions  of 174  locations of smaller  home  healthcare  companies  and the
opening  of 49 new  locations.  RoTech  plans  to  continue  to  enter  new home
healthcare markets through  acquisitions or start-ups as competitive and pricing
pressures encourage consolidation and economies of scale. 

     Recent data  suggests  that there is a shortage of  healthcare  services in
non-urban  markets.  According  to the  United  States  Census  Bureau,  in 1990
non-urban  areas of the United States  accounted for roughly 25% of the national
population,  or  approximately  62 million  people.  However,  according  to the
American Medical  Association,  just 11% of physicians,  or approximately 75,000
physicians,  practice in  non-metropolitan  markets.  This data  indicates  that
non-urban markets are underserved,  and suggests that there may be opportunities
for  improvement  in access to primary  care  physicians,  as well as  specialty
services.  RoTech believes that these needs result in significant  opportunities
for companies such as RoTech,  which can attract,  retain and network physicians
in non-urban settings while offering ancillary services such as home healthcare,
to become a full-service non-institutional based primary healthcare provider.

     RoTech was founded in 1981 to provide  home  respiratory  and home  medical
equipment products and services to patients in Florida. With its founders' roots
in pharmacy and pharmaceutical  sales,  RoTech's marketing  directive has always
been to provide information to primary care physicians regarding the utilization
of home  healthcare  techniques,  products and services for their  patient base.
Providing  information  to these  physicians as to disease  management  leads to
earlier  identification  and  treatment of  patients,  enhancing  the  patient's
quality of life and  longevity.  RoTech has not targeted  specialists,  as their
patients are more acute and since  specialists  have  historically  been tied to
hospital  systems,  which  results  in higher  hospitalization  rates.  RoTech's
marketing is directed at identifying  patients of primary care physicians  prior
to  hospitalization  and prior to an acuity level that would require utilizing a
specialist.

     RoTech's  strategy is to develop  integrated  healthcare  delivery  systems
through the acquisition of smaller local home healthcare  companies in non-urban
areas.  RoTech targets  non-urban markets of smaller cities and rural areas, due
to  the  dominance  of  primary  care  physicians  in  these  markets,   reduced
competition  and a tendency  to care for  patients in the home  setting.  RoTech
believes that acquisitions of home healthcare  companies will continue to expand
the base of relationships with primary care physicians in these markets. Primary
care physicians in these markets typically have long-standing relationships with
loyal patient bases. These physicians are usually solo practitioners and are the
key decision  makers in the treatment of their  patients.  RoTech  believes that
making home healthcare  products and services available to these physicians will
result in better, less expensive healthcare that provides an improved quality of
life for the patients and their caregivers in these communities.

     RoTech was  incorporated  on  September  1, 1981 as a Florida  corporation.
RoTech's principal executive offices are located at 4506 L.B. McLeod Road, Suite
F, Orlando, Florida 32811 and its telephone number is (407) 841-2115. Unless the
context  indicates   otherwise,   the  term  "RoTech"  includes  RoTech  Medical
Corporation and its subsidiaries.

IHS ACQUISITION XXIV, INC.

     Merger  Sub,  which was  incorporated  under the laws of Florida on July 1,
1997,  is a direct,  wholly-owned  subsidiary  of IHS and has not engaged in any
business activity  unrelated to the Merger.  The principal  executive offices of
Merger Sub are located at 10065 Red Run Boulevard,  Owings Mills, Maryland 21117
and its telephone number is (410) 998-8400.


                                       7
<PAGE>

                                   THE MERGER


TERMS OF THE MERGER

     The Merger Agreement  provides that,  subject to the requisite  approval of
the  stockholders  of IHS and  RoTech  and the  satisfaction  or  waiver  (where
permissible) of certain other conditions,  at the Effective Time (as hereinafter
defined) of the  Merger,  Merger Sub will be merged  with and into  RoTech,  the
separate  corporate  existence  of  Merger  Sub will  cease,  and  RoTech as the
surviving corporation will become a wholly-owned  subsidiary of IHS. At the time
the Merger is consummated  (the "Effective  Time"),  each share of RoTech Common
Stock (other than shares held by RoTech or IHS or their subsidiaries, which will
be  canceled)  will be converted  into the right to receive  .5806 shares of IHS
Common  Stock with cash paid in lieu of  fractional  shares.  In  addition,  the
outstanding and unexercised  options to acquire RoTech Common Stock and RoTech's
outstanding  convertible  debentures  will be adjusted at the Effective  Time to
permit them to remain  outstanding  and become  exercisable  for or  convertible
into, as the case may be, IHS Common Stock, based on the Exchange Ratio, as more
fully described in the Merger  Agreement.  Each outstanding  share of IHS Common
Stock will remain  outstanding  and  unchanged  following  the Merger.  See "The
Merger - Terms of the Merger," "- RoTech Debentures" and "The Merger Agreement."


     On  September , 1997,  the last trading day prior to the date of this Joint
Proxy Statement/Prospectus, the closing price of IHS Common Stock as reported on
the NYSE was $________ per share. At such price, the equivalent value of a share
of RoTech Common Stock would be $_______, calculated based on the Exchange Ratio
(the  "Equivalent  Value"),  and the  aggregate  Merger  consideration  would be
approximately  $____________  (based on 26,439,322 shares of RoTech Common Stock
oustanding  on September , 1997,  the last  business day before the date of this
Joint Proxy  Statement/Prospectus).  The actual  market  price of the IHS Common
Stock may vary, which will cause a corresponding  change in the Equivalent Value
and the aggregate Merger consideration.  Additionally,  the Equivalent Value may
differ from the actual market price of RoTech Common Stock.  Each stockholder is
urged to obtain updated market information.


     Consummation of the Merger is conditioned upon stockholder approval.  There
is no guarantee that such  stockholder  approval will be obtained at the Special
Meetings.  If such stockholder approval is not obtained,  the Merger will not be
consummated.  See "The Special Meetings." If the Merger is not consummated,  IHS
will continue to pursue  acquisitions to expand its home  healthcare  operations
and RoTech will continue its operating and acquisition  strategies as a separate
home healthcare company.


RECOMMENDATIONS OF THE BOARDS OF DIRECTORS

     IHS.  The Board of  Directors  of IHS (the  "IHS  Board")  has  unanimously
approved the Merger Agreement and recommends a vote FOR approval and adoption of
the Merger Agreement. The IHS Board believes the Merger Agreement is fair to and
in the best interests of the IHS stockholders.

     In considering  the advantages of the Merger,  the IHS Board  addressed the
following material  considerations:  the IHS Board's belief that the Merger will
enhance   implementation   of  IHS'   post-acute   care   network  by  expanding
significantly the home respiratory and infusion therapy services offered by IHS;
the  strategic  fit  between  IHS and  RoTech,  which in IHS'  view  offers  the
opportunity for synergies through, among other things, potential joint-marketing
opportunities  and the strength and expertise of the combined  management of IHS
and RoTech; the belief that the combined company would be better able to respond
to the changing  healthcare  marketplace;  the financial  condition,  results of
operations,  business  and  prospects  of each of IHS,  RoTech and the  combined
company;  the Merger is  expected  to be treated as a purchase  under  generally
accepted accounting  principles ("GAAP") and as a tax-free  reorganization under
the Internal  Revenue Code of 1986, as amended (the "Code");  the opinion of the
management of IHS that the issuance


                                       8
<PAGE>

of IHS Common  Stock in the Merger is not  believed to be dilutive to  earnings;
the  deleveraging  effect of the Merger on IHS' balance sheet; and the financial
analyses  performed  by  Donaldson,  Lufkin &  Jenrette  Securities  Corporation
("DLJ") in connection with its  determination as to the fairness of the Exchange
Ratio,  from a financial  point of view, to the holders of IHS Common Stock.  In
considering  the  disadvantages  of the  Merger,  the IHS  Board  addressed  the
following material factors:  the risk that IHS would not be able to successfully
integrate  the  business  of RoTech  with that of IHS and thus not  realize  the
expected  synergies,  including the fact that an unsuccessful  integration would
interrupt its normal  business  processes;  the proposed  reductions in Medicare
reimbursement for oxygen used in home respiratory therapy; and the fact that IHS
will be required to offer to repurchase  an aggregate of $110 million  principal
amount of RoTech's outstanding  convertible debentures immediately following the
Merger. See "The Merger - Recommendations of the Boards of Directors - IHS."

     In  considering  the  recommendation  of the IHS Board with  respect to the
Merger Agreement and the  transactions  contemplated  thereby,  IHS stockholders
should carefully consider the matters set forth under "Risk Factors."

     RoTech.  The  Board  of  Directors  of  RoTech  (the  "RoTech  Board")  has
unanimously approved the Merger Agreement and recommends a vote FOR approval and
adoption of the Merger Agreement. The RoTech Board believes the Merger Agreement
is fair to and in the best interests of the stockholders of RoTech.


     In considering the Merger,  the RoTech Board addressed,  among others,  the
following considerations:  the terms of the Merger Agreement, including, without
limitation,  the fixed  Exchange  Ratio;  the oral  opinion of Smith Barney Inc.
("Smith  Barney") to the effect  that,  as of the date of such opinion and based
upon and subject to certain  matters  set forth in such  opinion,  the  Exchange
Ratio was fair to holders of RoTech Common Stock from a financial point of view;
the RoTech  Board's  review of the financial  condition,  results of operations,
cash flows and business of RoTech and IHS; the opportunity to participate in the
consolidation  of the healthcare  industry with a strong partner in a compatible
sector of the market,  subacute  care;  the  opportunity  to  preserve  RoTech's
strength  and  continuity  of key  personnel  in local  markets in which  RoTech
dominates or is a strong  participant;  continuing  pressure  from  Medicare and
Medicaid payment arrangements, due to federal and state budget pressures subject
to political control; the compatibility of key management  principles within IHS
and  RoTech;  the  developed  operating  systems  within  IHS that would aid the
operations of RoTech in increasing  efficiencies and maintaining compliance with
increasing  regulatory  oversight;  the  management  strengths  of  IHS;  that a
combination of IHS and RoTech would be far better  positioned to consolidate and
expand a viable home health  delivery  system and to negotiate  with  healthcare
payors for proper  compensation for such delivery;  the support of the Merger by
all  top  management  of  RoTech;   the   attractiveness  of  allowing  RoTech's
stockholders  to become  stockholders  of a larger,  more diverse  company;  the
potential long- and short-term  benefits of the Merger; the expectation that the
Merger  will  generally  be  tax-free  to  RoTech  and  its  stockholders;   the
expectation  that shares of IHS Common Stock issued in the Merger will be freely
transferable (other than shares issued to affiliates);  and the expectation that
the  Merger  will be  accounted  for as a  purchase.  In  considering  potential
disadvantages of the Merger,  the RoTech Board addressed the  considerations set
forth  below  under  "Risk  Factors."  The  RoTech  Board  also  considered  the
circumstances  under  which  the  termination  provisions  and  the  significant
termination fee contained in the Merger  Agreement would be payable,  as well as
RoTech's  ability to solicit  other  potential  acquirors,  and the effect these
provisions  might have in  reducing  the  likelihood  of  engaging in a business
combination with a party other than IHS. See "The Merger  Recommendations of the
Boards of Directors - RoTech" and "Risk Factors."

     In considering the  recommendation  of the RoTech Board with respect to the
Merger Agreement and the transactions  contemplated thereby, RoTech stockholders
should  carefully  consider the matters set forth under "Risk  Factors" and "The
Merger - Additional Interests of Certain Persons in the Merger." 


                                       9
<PAGE>

OPINIONS OF FINANCIAL ADVISORS

     IHS.  DLJ has acted as  financial  advisor  to IHS in  connection  with the
Merger and  delivered  a written  opinion to the IHS Board dated July 6, 1997 to
the effect  that,  as of the date of such  opinion and based upon and subject to
the assumptions,  limitations and qualifications set forth therein, the Exchange
Ratio was fair,  from a  financial  point of view,  to the holders of IHS Common
Stock.  DLJ also  delivered to the IHS Board its opinion  dated the date of this
Joint Proxy Statement/Prospectus to substantially the same effect. The full text
of  the   written   opinion  of  DLJ  dated  the  date  of  this   Joint   Proxy
Statement/Prospectus,   which  sets  forth  the  assumptions  made,   procedures
followed,  other  matters  considered  and limits of the review  undertaken,  is
attached as Appendix B to this Joint  Proxy  Statement/Prospectus  and should be
read  carefully in its entirety.  DLJ's opinion is directed to the IHS Board and
relates  only to the fairness of the  Exchange  Ratio from a financial  point of
view to the holders of IHS Common  Stock,  does not address any other  aspect of
the Merger or related  transactions and does not constitute a recommendation  to
any IHS  stockholder as to how such  stockholder  should vote at the IHS Special
Meeting.  IHS  STOCKHOLDERS  ARE URGED TO READ  SUCH  OPINION  CAREFULLY  IN ITS
ENTIRETY. See "The Merger - Opinions of Financial Advisors - IHS."

     In the ordinary  course of business,  DLJ and its  affiliates  may actively
trade or hold the  securities of IHS and RoTech for their own account or for the
accounts of  customers  and,  accordingly,  may at any time hold a long or short
position in such  securities.  DLJ in the past has provided  certain  investment
banking  services to IHS unrelated to the proposed  Merger,  including acting as
co-manager  for certain of IHS' private debt  offerings  and the initial  public
offering of IHS' assisted living services subsidiary.

     RoTech. Smith Barney has acted as financial advisor to RoTech in connection
with the Merger and has  delivered to the RoTech Board a written  opinion  dated
July 6, 1997 to the effect  that,  as of the date of such opinion and based upon
and subject to certain matters stated therein, the Exchange Ratio was fair, from
a financial point of view, to the holders of RoTech Common Stock.  The full text
of the written opinion of Smith Barney dated July 6, 1997,  which sets forth the
assumptions made,  matters  considered and limitations on the review undertaken,
is attached as Appendix C to this Joint Proxy Statement/Prospectus and should be
read  carefully in its entirety.  The opinion of Smith Barney is directed to the
RoTech  Board and  relates  only to the  fairness of the  Exchange  Ratio from a
financial  point of view,  does not  address  any other  aspect of the Merger or
related transactions and does not constitute a recommendation to any stockholder
as to how such stockholder should vote at the RoTech Special Meeting. HOLDERS OF
ROTECH  COMMON STOCK ARE URGED TO READ SUCH OPINION  CAREFULLY IN ITS  ENTIRETY.
See "The Merger - Opinions of Financial Advisors - RoTech."

     In the ordinary  course of business,  Smith Barney and its  affiliates  may
actively  trade or hold the  securities of IHS and RoTech for their own accounts
or for the accounts of their customers, and, accordingly, may at any time hold a
long or short position in such securities. Smith Barney has in the past provided
certain investment banking services to RoTech,  including acting as lead manager
for certain of RoTech's equity public  offerings and a convertible  debt private
offering.  Smith Barney has in the past also provided certain investment banking
services  to IHS,  including  acting as lead  manager  for IHS'  equity and debt
public and private  offerings and the initial  public  offering of IHS' assisted
living services  subsidiary,  and as financial advisor to IHS in connection with
certain acquisitions and divestitures.



EFFECTIVE TIME OF THE MERGER

     The Merger will become  effective upon the filing of the Articles of Merger
by RoTech  under the  Business  Corporation  Act of the  State of  Florida  (the
"FBCA"), or at such later time as may be specified in such Articles of Merger.
The Merger Agreement requires that this filing be made,


                                       10
<PAGE>


subject to  satisfaction  of the separate  conditions to the obligations of each
party to consummate  the Merger,  as soon as practicable on or after the date of
the Special Meetings,  or at such other time as may be agreed by IHS and RoTech.
It is presently anticipated that such filing will be made as soon as practicable
after the  Special  Meetings  on October , 1997 (the date of such  filing  being
hereinafter referred to as the "Closing Date"), and that the Effective Time will
occur upon such filing, although there can be no assurance as to whether or when
the Merger will occur. See "The Merger  Agreement  Effective Time and Effects of
the Merger." 



EXCHANGE OF SHARE CERTIFICATES

     As  soon  as  reasonably  practicable  on  or  after  the  Effective  Time,
transmittal  materials  will be  provided  to each holder of record of shares of
RoTech Common Stock by a bank,  trust company or similar entity chosen by IHS to
act as exchange agent (the "Exchange Agent") for use in exchanging such holder's
stock  certificates for certificates  evidencing  shares of IHS Common Stock and
for  receiving  cash in lieu of  fractional  shares and any  dividends  or other
distributions to which such holder is entitled as a result of the Merger. ROTECH
STOCKHOLDERS  SHOULD NOT SEND IN THEIR STOCK CERTIFICATES UNTIL THEY RECEIVE THE
LETTER OF  TRANSMITTAL  FROM THE  EXCHANGE  AGENT.  See "The Merger  Agreement -
Exchange of Share Certificates."


CONDITIONS TO THE MERGER

     The  obligation  of each of IHS,  Merger Sub and RoTech to  consummate  the
Merger is subject to certain  conditions  typical in  transactions of this type,
including  obtaining the requisite  stockholder  approvals;  obtaining requisite
regulatory approvals from certain governmental authorities; the absence of legal
restraints  or  prohibitions  preventing  the  consummation  of the Merger;  the
effectiveness  of  the   Registration   Statement  of  which  this  Joint  Proxy
Statement/Prospectus  is a part;  approval for listing on the NYSE of the shares
of IHS Common Stock to be issued pursuant to the Merger; the representations and
warranties of the other party contained in the Merger Agreement being materially
true; the performance by the other party of all material  obligations  contained
in the  Merger  Agreement;  the  receipt  of  opinions  of counsel in respect of
certain federal income tax  consequences of the Merger;  the opinions of DLJ and
Smith Barney not having been  adversely  modified or withdrawn as of the date of
mailing of this  Joint  Proxy  Statement/Prospectus;  Mr.  William  P.  Kennedy,
RoTech's Chairman of the Board and Chief Executive  Officer,  and Ms. Rebecca R.
Irish,  RoTech's  Chief  Financial  Officer,  having  entered into severance and
non-competition   agreements  with  RoTech;  Mr.  Stephen  P.  Griggs,  RoTech's
President  and  Chief  Operating  Officer,  having  entered  into an  employment
agreement with RoTech;  and the receipt of "cold comfort"  letters from IHS' and
RoTech's  independent  auditors.  See "The Merger  Agreement  Conditions  to the
Merger."



REPRESENTATIONS, WARRANTIES AND COVENANTS

     Under the Merger  Agreement,  IHS,  Merger Sub and RoTech  have each made a
number of  representations  regarding the organization and capital structures of
the  respective  companies and their  affiliates,  their  operations,  financial
condition and other matters,  including their authority to enter into the Merger
Agreement and to consummate  the Merger.  The Merger  Agreement  provides  that,
until the Effective Time, except as otherwise  provided in the Merger Agreement,
RoTech  will  conduct  its  business  in the  ordinary  course  and will use its
reasonable best efforts to preserve intact its present business organization and
preserve its goodwill  with  customers,  suppliers  and others  having  business
dealings  with  RoTech.   See  "The  Merger  Agreement  -  Representations   and
Warranties"  and "-  Conduct  of  RoTech  Business  Pending  the  Merger;  Other
Covenants."


                                       11
<PAGE>

NO SOLICITATION

     RoTech  has  agreed,  subject  to  certain  exceptions,  that  prior to the
Effective Time of the Merger or earlier termination of the Merger Agreement,  it
will not, directly or indirectly,  solicit,  initiate, endorse or enter into any
agreement with respect to, or take any other action  specifically to facilitate,
any  inquiries or the making of any proposal or offer for any tender or exchange
offer,  proposal for a merger,  share exchange or other business  combination or
similar transaction involving RoTech or any of its subsidiaries. See "The Merger
Agreement - No Solicitation."



REGULATORY APPROVALS


     The Hart-Scott-Rodino  Antitrust  Improvements Act of 1976, as amended (the
"HSR Act"),  provides that certain business  mergers  (including the Merger) may
not be consummated until certain information has been furnished to the Antitrust
Division of the United  States  Department of Justice (the "DOJ") and the United
States  Federal  Trade  Commission  (the  "FTC"),  and  certain  waiting  period
requirements  (including any extensions  thereof) have been  satisfied.  IHS and
RoTech  filed the  required  information  with the DOJ and the FTC on August 13,
1997,  and on September  12, 1997 the waiting  period under the HSR Act expired.
Notwithstanding the expiration of the waiting period of the HSR Act, the FTC and
DOJ or others could take action under the antitrust laws,  including  seeking to
enjoin the consummation of the Merger or, after the Effective Time,  seeking the
divestiture  by IHS of all or any part of the assets of RoTech  acquired  in the
Merger.  There can be no  assurance  that a challenge to the Merger on antitrust
grounds will not be made or, if such a challenge were made, that it would not be
successful.  IHS and RoTech will also be required to file other applications and
notices with certain federal and state regulatory  agencies,  including  without
limitation the United States Drug  Enforcement  Agency,  in connection  with the
transactions  contemplated by the Merger Agreement. See "The Merger - Regulatory
Approvals." 



WAIVER AND AMENDMENT

     The Merger  Agreement  provides  that,  at any time prior to the  Effective
Time,  the parties may,  under  certain  circumstances,  waive  compliance  with
covenants  or  conditions  or amend or  otherwise  change the Merger  Agreement,
except that, after approval by the stockholders of IHS and RoTech,  no amendment
may be made that,  under the FBCA, would require further  stockholder  approval,
without  such  further  approval.   See  "The  Merger  Agreement  -  Waiver  and
Amendment."


TERMINATION

     The Merger  Agreement  may be terminated at any time prior to the Effective
Time,  whether before or after the requisite approval of the Merger Agreement by
the  stockholders  of IHS and RoTech under certain  circumstances  which are set
forth under "The Merger Agreement - Termination."

     If the Merger  Agreement  is  terminated  (i) by RoTech  because the RoTech
Board  approves,  recommends  or  endorses a RoTech  Competing  Transaction  (as
hereinafter  defined), or (ii) by IHS because (a) the RoTech Board recommends to
the RoTech stockholders a RoTech Competing  Transaction or RoTech enters into an
agreement with respect to a RoTech  Competing  Transaction or (b) a tender offer
or exchange offer for 20% or more of the outstanding  capital stock of RoTech is
commenced  and the RoTech  Board  recommends,  within the time period  specified
under Rule 14e-2 under the Exchange Act, that RoTech's stockholders tender their
shares,  then RoTech will be  obligated  to reimburse  all  reasonable  expenses
incurred  by IHS in  connection  with the Merger  Agreement  and to pay to IHS a
termination fee in the amount of $25.0 million ($15.0 million in the


                                       12
<PAGE>

event of a  termination  pursuant  to  clause  (ii)(b)  above if the  tender  or
exchange offer is for at least 20% but less than 50% of the  outstanding  shares
of capital  stock of  RoTech)  (the  "RoTech  Termination  Fee").  If the RoTech
Termination  Fee is paid,  it will be IHS'  sole and  exclusive  remedy  against
RoTech under the Merger  Agreement.  Alternatively,  if the Merger  Agreement is
terminated (i) by RoTech because the RoTech Board determines, in the exercise of
its fiduciary duty under  applicable law, not to recommend the Merger,  or shall
have withdrawn such recommendation or (ii) by IHS because the RoTech Board fails
to make or withdraws its recommendation of the Merger (unless as a result of the
withdrawal  by Smith  Barney of its  opinion  for  reasons  other  than a RoTech
Competing Transaction), then RoTech will be obligated to pay to IHS a fee in the
amount of $5.0 million. A "RoTech Competing Transaction," which is defined under
"The Merger Agreement - No  Solicitation,"  generally refers to a transaction in
which a third  party  proposes to acquire  all or a  substantial  portion of the
outstanding  stock or assets of RoTech,  as well as any tender offer or exchange
offer for more  than 20% of the  outstanding  shares of RoTech or any  person or
group  acquiring  beneficial  ownership  of 15% or more of RoTech's  outstanding
shares.  Additionally,  under the Merger  Agreement,  RoTech will not, except to
fulfill its fiduciary duties or as otherwise  specifically allowed by the Merger
Agreement,  directly or indirectly  participate  in or initiate  discussions  or
negotiations  with any third  party  concerning  any  merger,  sale of assets or
similar transaction. See "The Merger Agreement - No Solicitation."

     If the Merger  Agreement  is  terminated  (i) by IHS  because the IHS Board
determines,  in the exercise of its fiduciary duty under  applicable law, not to
recommend the Merger,  or shall have withdrawn such  recommendation,  or (ii) by
RoTech  because the IHS Board fails to make or withdraws its  recommendation  of
the Merger,  then IHS will be  obligated to pay to RoTech a fee in the amount of
$10.0 million (the "IHS  Termination  Fee"). If the IHS Termination Fee is paid,
it will be  RoTech's  sole and  exclusive  remedy  against  IHS under the Merger
Agreement.



ADDITIONAL INTERESTS OF CERTAIN PERSONS IN THE MERGER


     In considering the  recommendation  of the RoTech Board with respect to the
Merger Agreement and the transactions  contemplated thereby, RoTech stockholders
should be aware  that  certain  members of the RoTech  Board and  management  of
RoTech  have  certain  interests  in the  Merger  that  are in  addition  to the
interests of RoTech  stockholders  generally.  Certain of these persons may have
participated  in the negotiation and  consideration  of the Merger  Agreement as
well as certain of the arrangements  described below.  These interests  include,
but are not limited to, the fact that (i) as a condition to closing, Mr. Stephen
P. Griggs,  RoTech's  President and Chief Operating  Officer,  will enter into a
five-year  employment  agreement  and a related  agreement  with  RoTech and IHS
providing  for,  among other  things,  (a) Mr.  Griggs'  serving as President of
RoTech at a base  salary of  $500,000  per annum,  (b) his receipt of a $500,000
bonus in each year in which  RoTech's net income  contribution  to IHS equals or
exceeds specified targets, with an additional bonus determined by IHS to be paid
if the net income contribution  target is exceeded,  (c) a one-time cash sign-on
bonus of $3.5 million, payable at the closing of the Merger (the "Closing"), (d)
the issuance to Mr. Griggs of warrants to purchase  750,000 shares of IHS Common
Stock,  at a per share exercise price equal to the average closing sale price of
the IHS Common  Stock on the NYSE for the 15 business  days prior to the Closing
Date,  such  warrants to vest at a rate of 20% per year  beginning  on the first
anniversary of the Closing Date (subject to acceleration  upon Mr. Griggs' death
or the  occurrence  of a change in control of IHS) and (e) the payment by RoTech
to Mr.  Griggs of the amount of any excise tax payable by him under Section 4999
of the Code or  comparable  state or  local  tax  provisions  (the  "Excise  Tax
Provisions")  as a result of any  payments  to him  pursuant  to his  employment
agreement or in connection with the Merger, as well as the income tax and excise
tax on such additional  compensation  such that, after the payment of income and
excise taxes, Mr. Griggs is in the same economic position in which he would have
been if the Excise Tax Provisions had not been  applicable;  (ii) Mr. William P.
Kennedy,  RoTech's  Chairman  and Chief  Executive  Officer,  will  enter into a
severance and non-competition agreement and a 


                                       13
<PAGE>


related  agreement  with  RoTech  providing  for,  among other  things,  (a) his
resignation  as an  officer  and  director  of  RoTech,  (b)  his  serving  as a
consultant  to RoTech  for three  years for a  consulting  fee of $1.0  million,
payable in one lump sum at the Closing, (c) his agreeing not to compete with IHS
or  RoTech  for 15 years  in  consideration  of a  non-compete  payment  of $4.0
million,  payable in one lump sum at the Closing,  although beginning five years
after the Closing  Mr.  Kennedy can  provide  consulting  services to  competing
businesses  and (d) the  payment  by RoTech to Mr.  Kennedy of the amount of any
excise tax  payable by him under the  Excise Tax  Provisions  as a result of any
payments to him pursuant to his  severance and  non-competition  agreement or in
connection  with the  Merger,  as well as the  income tax and excise tax on such
additional compensation such that, after the payment of income and excise taxes,
Mr. Kennedy is in the same economic  position in which he would have been if the
Excise  Tax  Provisions  had not  been  applicable;  (iii)  IHS has  reached  an
agreement  in  principle  to  purchase,  for $4.0  million,  a 30% interest in a
newly-formed  limited  partnership  controlled  by Mr.  Kennedy,  which  limited
partnership will enter into a marketing arrangement for pharmaceutical  products
produced by Nephron Pharmaceuticals  Corporation,  a corporation wholly-owned by
Mr. Kennedy, all on terms to be mutually agreed upon; (iv) Ms. Rebecca R. Irish,
RoTech's   Chief   Financial   Officer,   will  enter  into  a   severance   and
non-competition  agreement and a related  agreement  with RoTech  providing for,
among other things, (a) her resignation as an officer of RoTech, (b) her serving
as a  consultant  to  RoTech  for two years for a  consulting  fee of  $250,000,
payable in one lump sum at the Closing, (c) her agreeing not to compete with IHS
or  RoTech  for 15 years  in  consideration  of a  non-compete  payment  of $1.0
million,  payable in one lump sum at the Closing,  although beginning five years
after the Closing Ms. Irish can provide  services to competing  businesses  as a
consultant,  employee or otherwise and (d) the payment by RoTech to Ms. Irish of
the amount of any excise tax payable by her under the Excise Tax Provisions as a
result of any  payments to her  pursuant to her  severance  and  non-competition
agreement or in connection with the Merger, as well as the income tax and excise
tax on such additional  compensation  such that, after the payment of income and
excise taxes, Ms. Irish is in the same economic position in which she would have
been if the  Excise  Tax  Provisions  had not been  applicable;  (v) each of the
executive officers of RoTech,  other than William P. Kennedy,  RoTech's Chairman
and Chief Executive Officer,  and William A. Walker II, Secretary and a director
of RoTech,  currently  holds RoTech  Options (as defined  below),  which will be
converted  into IHS Exchange  Options (as defined  below) in the Merger based on
the  Exchange  Ratio;  (vi) each of the  non-employee  directors of RoTech holds
rights to receive  shares of RoTech  Common  Stock,  which  rights  will  become
immediately  vested as a result of the Merger; and (vii) IHS and Merger Sub have
agreed, from and after the Effective Time, to continue to advance legal fees and
expenses and to indemnify  present and former  officers and directors of RoTech,
as provided in RoTech's  Articles of Incorporation and By-laws as now in effect,
and to continue to perform under indemnification  agreements currently in effect
between RoTech and certain of its officers and directors,  and IHS has agreed to
maintain in effect for a period of five years after the Effective  Time policies
of directors'  and  officers'  liability  insurance  providing at least the same
coverage as RoTech's current  policies in respect of acts,  omissions or matters
occurring prior to the Effective Time, subject to certain limitations (provided,
however,  that the  foregoing  does not  obligate  IHS to  provide  any  greater
officers' and directors'  liability  insurance  than that generally  provided to
IHS' officers and directors).  The RoTech Board was aware of these  arrangements
and that such  arrangements may give these  individuals  interests in the Merger
that are in addition to the interests of  stockholders  generally and determined
that such  additional  interests  did not alter its  conclusions  regarding  the
Merger or its recommendation to RoTech's  stockholders.  As of the RoTech Record
Date (as defined herein),  directors and executive  officers of RoTech and their
affiliates  beneficially owned an aggregate of 2,040,073 shares of RoTech Common
Stock  (excluding  shares  issuable  upon  exercise  of  options),  representing
approximately  7.7% of the shares of RoTech  Common  Stock  outstanding  on such
date. See "The Merger - Additional  Interests of Certain Persons in the Merger."
The directors and executive  officers of RoTech and certain of their  affiliates
have unanimously  indicated their intentions to vote the shares of RoTech Common
Stock beneficially owned by them FOR the Merger. 


                                       14
<PAGE>

ACCOUNTING TREATMENT


     It is  intended  that  the  Merger  will be  accounted  for as a  "purchase
transaction"  in  accordance  with GAAP.  Under this method of  accounting,  the
Merger  consideration will be allocated to RoTech's assets and liabilities based
upon their  estimated  fair market value at the Closing Date of the Merger.  The
excess,  if any,  of  purchase  price  over the fair  values  of the net  assets
acquired  will be recorded as intangible  assets and  amortized  over a 15 to 40
year estimated life for accounting  purposes.  Assuming a price per share of IHS
Common Stock on the Closing  Date of the Merger of $34.69  (based on the closing
price of IHS  Common  Stock on August 11,  1997) and based on the  approximately
24,177,000 shares of RoTech Common Stock outstanding on April 30, 1997, IHS will
recognize intangible assets of approximately  $545.1 million  (substantially all
of which will be goodwill),  which will result in annual amortization expense of
approximately  $13.8  million.  The actual amount of  intangible  assets will be
based upon the  closing  price of the IHS Common  Stock on the day the Merger is
consummated  and the number of shares of IHS Common  Stock issued in the Merger.
At September , 1997 (the last business day prior to the date of this Joint Proxy
Statement/Prospectus),   26,439,322   shares  of  RoTech   Common   Stock   were
outstanding.  In addition,  RoTech's  operating results will be included in IHS'
consolidated  operating  results  from and after the Closing Date of the Merger.
See "The Merger -  Accounting  Treatment"  and  "Unaudited  Pro Forma  Financial
Information." 



CERTAIN FEDERAL INCOME TAX CONSEQUENCES

     Each of IHS and RoTech has received an opinion of its  counsel,  subject to
the assumptions contained therein, to the effect that the Merger will qualify as
a reorganization pursuant to Section 368(a) of the Code. If, as anticipated, the
Merger qualifies as such a reorganization, no gain or loss will be recognized by
a RoTech  stockholder upon the exchange of the shares of RoTech Common Stock for
shares of IHS Common Stock pursuant to the Merger, except on the receipt of cash
in lieu of a  fractional  share  interest  in IHS Common  Stock.  EACH HOLDER OF
ROTECH  COMMON  STOCK  IS  URGED  TO  CONSULT  HIS OR HER OWN  PERSONAL  TAX AND
FINANCIAL ADVISORS CONCERNING THE FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER,
AS WELL AS ANY APPLICABLE STATE, LOCAL, FOREIGN OR OTHER TAX CONSEQUENCES, BASED
UPON SUCH HOLDER'S OWN  PARTICULAR  FACTS AND  CIRCUMSTANCES.  See "The Merger -
Certain Federal Income Tax Consequences."



NO APPRAISAL RIGHTS

     Under the General Corporation Law of the State of Delaware (the "DGCL"), no
holders of IHS Common Stock will be entitled to appraisal  rights in  connection
with the  Merger.  Under the FBCA,  no  holders of RoTech  Common  Stock will be
entitled to appraisal rights in connection with the Merger.



LIMITATIONS ON RESALE OF IHS COMMON STOCK BY AFFILIATES

     All shares of IHS  Common  Stock  received  by RoTech  stockholders  in the
Merger  will be freely  transferable,  except  that  shares of IHS Common  Stock
received by persons who are deemed to be  "affiliates"  (as such term is used in
Rule 145 under the Securities Act) will be subject to the  restrictions  imposed
by such  rule.  In  accordance  with Rule  145,  an  affiliate  of RoTech or IHS
receiving  IHS Common Stock issued in the Merger may not sell such shares except
pursuant  to the volume and manner of sale  limitations  and other  requirements
specified therein or pursuant to an effective  registration  statement under the
Securities  Act. See "The Merger - Limitations  on Resale of IHS Common Stock by
Affiliates."


                                       15
<PAGE>

NYSE LISTING

     It is a condition to the  obligation  of IHS and RoTech to  consummate  the
Merger that the shares of IHS Common Stock to be received by RoTech stockholders
pursuant to the Merger be approved for listing on the NYSE, upon official notice
of issuance,  at the Effective Time. A Subsequent  Listing  Application  will be
filed with the NYSE to list the  shares of IHS Common  Stock to be issued to the
RoTech  stockholders.  Although  no  assurance  can be given  that the NYSE will
accept such shares of IHS Common Stock for listing,  IHS anticipates  that these
shares will qualify for listing. See "The Merger - NYSE Listing."



COMPARISON OF RIGHTS OF IHS AND ROTECH STOCKHOLDERS

     IHS is  incorporated  under the laws of the State of Delaware and RoTech is
incorporated  under the laws of the State of  Florida.  The holders of shares of
RoTech  Common Stock,  whose rights as  stockholders  are currently  governed by
Florida  law,  RoTech's  Articles of  Incorporation,  as amended,  and  RoTech's
By-laws,  will, upon the exchange of their shares pursuant to the Merger, become
holders of shares of IHS Common Stock, and their rights as such will be governed
by Delaware law, IHS' Third Restated  Certificate of Incorporation,  as amended,
and IHS'  By-laws.  The  material  differences  between the rights of holders of
shares of RoTech  Common Stock and the rights of holders of shares of IHS Common
Stock result from differences in the corporate law of the States of Delaware and
Florida and in the governing  corporate documents of IHS and RoTech and include:
differences in their classes and series of capital  stock,  in the size of their
boards of directors,  in the manner of amendment or repeal of their  Certificate
or Articles  of  Incorporation  and  By-laws,  in the manner of calling  special
meetings of  stockholders,  in their advance notice  provisions for  stockholder
proposals and stockholder nominations of directors,  and in their provisions for
indemnification  of directors  and officers.  A more  complete  summary of these
material  differences is set forth under "Comparison of Rights of IHS and RoTech
Stockholders."


                                  RISK FACTORS

     Certain  factors to be considered  in connection  with an investment in IHS
Common  Stock and  approval of the Merger are set forth  under  "Risk  Factors."
These risk factors  include  risks  associated  with this Merger and IHS' growth
strategy in general, and risks associated with the businesses of IHS and RoTech,
including: IHS' level of indebtedness;  IHS' managed care strategy; IHS' ability
to  integrate  First  American,  RoTech and other recent  acquisitions  into its
existing  operations;  the historical  financial  performance of First American;
capital requirements; the possible adverse effect of healthcare reform; reliance
on  reimbursement by third party payors;  uncertainty of government  regulation;
competition;  effect of certain anti-takeover provisions; possible volatility of
IHS' stock price;  risk of a fixed Exchange  Ratio;  dilution of voting power to
IHS  stockholders;  benefits of the Merger to certain  officers,  directors  and
affiliates  of  RoTech;  and  federal  income tax  consequences.  For a complete
discussion of the risk factors, see "Risk Factors."



                              THE SPECIAL MEETINGS


IHS SPECIAL MEETING


     Date,  Time and Place.  The IHS Special Meeting to consider and vote on the
Merger  Agreement  will be held on    ,  October    , 1997 at 10:00 a.m.,  local
time, at the executive  offices of IHS, 10065 Red Run  Boulevard,  Owings Mills,
Maryland.

     Record  Date;  Quorum.  Only  holders of record of IHS Common  Stock at the
close of business on September 1, 1997 (the "IHS Record  Date") will be entitled
to notice of and to vote at the IHS Special Meeting.  As of the IHS Record Date,
there were  outstanding  and  entitled to vote  25,657,612  shares of IHS Common
Stock. The presence,  in person or by proxy, of the holders of a majority of the
issued and  outstanding  shares of IHS Common Stock will  constitute a quorum at
the Special 


                                       16
<PAGE>

Meeting.  Abstentions  and broker  non-votes  will be  included  in  determining
whether a quorum is  present.  In the event that a quorum is not  present at the
IHS Special  Meeting,  it is expected  that such  meeting  will be  adjourned or
postponed to solicit additional proxies.

     Required  Vote.  Each issued and  outstanding  share of IHS Common Stock is
entitled to one vote on each matter to be presented at the IHS Special  Meeting.
Although IHS stockholder approval is not required under the DGCL, it is required
under the rules of the NYSE in order to maintain  NYSE listing of the IHS Common
Stock.  Under the NYSE rules,  the affirmative vote of the holders of a majority
of the outstanding  shares of IHS Common Stock present or represented at the IHS
Special  Meeting and  entitled to vote is required  for approval and adoption of
the Merger Agreement. As a result, broker non-votes will be treated as neither a
vote  "for"  nor  "against"  the  matter,  although  they  will  be  counted  in
determining  if a quorum is present.  However,  abstentions  are  considered  in
determining  the number of votes  required  to attain a  majority  of the shares
present  or  represented  at the IHS  Special  Meeting  and  entitled  to  vote.
Accordingly,  an abstention from voting on a matter by a stockholder  present in
person or  represented  by proxy at the IHS  Special  Meeting has the same legal
effect as a vote  "against" the matter  because it represents a share present or
represented at the IHS Special Meeting and entitled to vote,  thereby increasing
the  number  of   affirmative   votes  required  to  approve  the  matter  under
consideration,  but is not considered an affirmative  vote for the matter,  even
though the stockholder or interested parties analyzing the results of the voting
may interpret such a vote  differently,  believing that an abstention  expresses
neither an affirmative nor a negative position on the Merger.

     As of the IHS Record  Date,  directors  and  executive  officers of IHS and
their affiliates beneficially owned an aggregate of 488,318 shares of IHS Common
Stock  (excluding  shares  issuable  upon  exercise  of  options),  representing
approximately  1.9% of the shares of IHS Common Stock  outstanding on such date.
The  directors  and  executive   officers  of  IHS  and  their  affiliates  have
unanimously  indicated  their  intentions to vote the shares of IHS Common Stock
beneficially owned by them FOR the Merger Agreement.

     Voting and Revocation of Proxies. Shares of IHS Common Stock represented by
a proxy  properly  signed and  received at or prior to the IHS Special  Meeting,
unless subsequently  revoked,  will be voted in accordance with the instructions
thereon. Any proxy may be revoked by the person giving it at any time before the
proxy is voted by the filing of an  instrument  revoking  it or a duly  executed
proxy  bearing a later date with the  Secretary  of IHS prior to the vote at the
IHS Special Meeting, or by voting in person at the IHS Special Meeting.

     For  additional  information  relating to the IHS Special Meeting, see "The
Special Meetings."


ROTECH SPECIAL MEETING


     Date,  Time and Place.  The RoTech Special  Meeting to consider and vote on
the Merger  Agreement  will be held on , October , 1997,  at 10:00  a.m.,  local
time, at SunTrust Bank, 200 South Orange Avenue, Orlando, Florida.

     Record Date;  Quorum.  Only holders of record of RoTech Common Stock at the
close of  business  on  September  1, 1997 (the  "RoTech  Record  Date") will be
entitled  to  notice of and to vote at the  RoTech  Special  Meeting.  As of the
RoTech  Record Date,  there were  outstanding  and  entitled to vote  26,439,322
shares of RoTech  Common  Stock.  The  presence,  in person or by proxy,  of the
holders of a majority  of the issued  and  outstanding  shares of RoTech  Common
Stock will  constitute a quorum at the RoTech Special  Meeting.  Abstentions and
broker non-votes will be included in determining whether a quorum is present. In
the event  that a quorum is not  present at the RoTech  Special  Meeting,  it is
expected that such meeting will be adjourned or postponed to solicit  additional
proxies. 

     Vote  Required. Each issued and outstanding share of RoTech Common Stock is
entitled  to  one  vote  on  each  matter  to be presented at the RoTech Special
Meeting.  Under  the  FBCA, approval and adoption of the Merger Agreement by the
stockholders of RoTech requires the


                                       17
<PAGE>

affirmative  vote of the  holders  of a majority  of the issued and  outstanding
shares of RoTech Common Stock.  As a result,  failures to vote,  abstentions and
broker non-votes will be the equivalents of votes against the Merger Agreement.



     As of the RoTech Record Date,  directors  and executive  officers of RoTech
and their  affiliates  beneficially  owned an aggregate  of 2,040,703  shares of
RoTech  Common  Stock  (excluding  shares  issuable  upon  exercise of options),
representing approximately 7.7% of RoTech Common Stock outstanding on such date.
The  directors  and  executive  officers  of RoTech  and their  affiliates  have
unanimously indicated their intentions to vote the shares of RoTech Common Stock
beneficially owned by them FOR the Merger Agreement.


     Voting and Revocation of Proxies. Shares of RoTech Common Stock represented
by a proxy  properly  signed  and  received  at or prior to the  RoTech  Special
Meeting,  unless  subsequently  revoked,  will be voted in  accordance  with the
instructions  thereon.  Any proxy may be revoked by the person  giving it at any
time before the proxy is voted by the filing of an  instrument  revoking it or a
duly  executed  proxy bearing a later date with the Secretary of RoTech prior to
the vote at the  RoTech  Special  Meeting,  or by voting in person at the RoTech
Special Meeting.


     For  additional  information  relating  to  the RoTech Special Meeting, see
"The Special Meetings."



                                       18
<PAGE>

                      MARKET AND MARKET PRICES; DIVIDENDS

     The IHS Common  Stock is traded on the NYSE under the symbol  "IHS" and the
RoTech  Common  Stock is traded on the Nasdaq  National  Market under the symbol
"ROTC".  The following  table sets forth for the periods  indicated the high and
low reported sale prices for the IHS Common Stock and the RoTech Common Stock as
reported  on  the  NYSE  Composite  Tape  and  by the  Nasdaq  National  Market,
respectively.




<TABLE>
<CAPTION>
                                    IHS
                                COMMON STOCK
                            --------------------
                              HIGH       LOW
                            --------- ----------
<S>                          <C>        <C>
CALENDAR YEAR 1995
   First Quarter  .........  $42 1/2     $34  1/2
   Second Quarter .........   37 1/4      28  5/8
   Third Quarter  .........   32 7/8      27  5/8
   Fourth Quarter .........   29 3/4      20  3/8
CALENDAR YEAR 1996
   First Quarter  .........   26          20  1/8
   Second Quarter .........   27 7/8      23  3/8
   Third Quarter  .........   25 7/8      20  1/2
   Fourth Quarter    ......   27 3/8      22
CALENDAR YEAR 1997
   First Quarter  .........   32 3/8      23  3/4
   Second Quarter .........   39          26  7/8
   Third Quarter (through
      September 16)  ......   39 1/8     32 11/16
</TABLE>








<TABLE>
<CAPTION>
                                    ROTECH
                                 COMMON STOCK
                             ---------------------
                                HIGH       LOW
                             ---------- ----------
<S>                             <C>      <C>
FISCAL YEAR 1996
   First Quarter   .........   $15       $101  3/16
   Second Quarter  .........    15 1/4     11  3/8
   Third Quarter   .........    21 7/8     15
   Fourth Quarter  .........    23 1/2     14  3/4
FISCAL YEAR 1997
   First Quarter   .........    18 1/2     13  5/8
   Second Quarter  .........    21 3/4     15 19/32
   Third Quarter   .........    20 3/8     14  1/2
   Fourth Quarter  .........    20 1/16    14  7/8
FISCAL YEAR 1998
   First Quarter (through
      September 16)   ......    20 1/8     18
</TABLE>



     In 1994,  1995 and 1996,  IHS declared a cash  dividend of $0.02 per share;
prior to 1994,  IHS had never  declared  or paid any cash  dividends  on the IHS
Common Stock.  The payment of any future  dividends will be at the discretion of
the IHS Board  and will  depend  upon,  among  other  things,  future  earnings,
operations,  capital  requirements,  the  general  financial  condition  of IHS,
contractual restrictions and general business conditions.  IHS' revolving credit
facility  prohibits the payment of dividends without the consent of the lenders,
and the indentures under which IHS' 10 1/4% Senior  Subordinated Notes due 2006,
9 1/2% Senior  Subordinated Notes due 2007 and 9 1/4% Senior  Subordinated Notes
due 2008 were issued limit the payment of  dividends  unless  certain  financial
tests are met. 

     Since its  formation  RoTech has not paid any cash  dividends on the RoTech
Common Stock.


     The following table sets forth the closing price per share of RoTech Common
Stock,  the closing price per share of IHS Common Stock and the  "equivalent per
share price" (as defined  herein) of RoTech Common Stock as of July 3, 1997, the
last  trading  day  before  RoTech  and IHS  announced  execution  of the Merger
Agreement and  September , 1997,  the last trading day prior to the date of this
Joint Proxy  Statement/Prospectus.  The  "equivalent  per share price" of RoTech
Common  Stock as of such date equals the  closing  price per share of IHS Common
Stock on such date  multiplied  by .5806,  which is the  number of shares of IHS
Common  Stock to be issued in  exchange  for each share of RoTech  Common  Stock
pursuant to the Merger Agreement. 






<TABLE>
<CAPTION>
                               ROTECH            IHS          EQUIVALENT
         DATE               COMMON STOCK     COMMON STOCK     PER SHARE
- -------------------------   --------------   --------------   -----------
<S>                         <C>              <C>              <C>
July 3, 1997 ............       $18.88           $38.94         $22.61
September  , 1997  ......       $                $              $
</TABLE>


     STOCKHOLDERS  ARE ADVISED TO OBTAIN CURRENT  MARKET  QUOTATIONS FOR THE IHS
COMMON STOCK AND THE ROTECH  COMMON  STOCK.  No assurance can be given as to the
market price of the IHS Common Stock or the RoTech Common Stock at the Effective
Time or at any other time.


                                       19
<PAGE>

     Because the Exchange  Ratio of IHS Common Stock for RoTech  Common Stock is
fixed at .5806 and will not  increase or  decrease  due to  fluctuations  in the
market price of either stock,  RoTech  stockholders  will not be compensated for
decreases  in the market  price of IHS Common Stock which could occur before the
Effective  Time. As a result,  in the event the market price of IHS Common Stock
decreases,  the value of the IHS Common  Stock to be  received  in the Merger in
exchange for RoTech Common Stock would  decrease.  In the event the market price
of IHS Common Stock instead  increases,  the value of the IHS Common Stock to be
received in the Merger in exchange for RoTech Common Stock would  increase.  See
"Risk Factors - Possible  Volatility of Stock Price;  Fixed Exchange  Ratio" and
"The Merger - Terms of the Merger."

     Following  the Merger,  RoTech Common Stock will no longer be traded on the
Nasdaq National Market.


                                       20
<PAGE>

                       COMPARATIVE PER SHARE INFORMATION


     The following summary presents  selected  comparative per share information
for (i) IHS on a  historical  basis in  comparison  with pro  forma  information
giving  effect to the Merger as if it had  occurred  on January 1, 1996 and (ii)
RoTech on a historical basis in comparison with pro forma equivalent information
after giving effect to the Merger,  assuming that .5806 of a share of IHS Common
Stock is issued in exchange for each share of RoTech Common Stock in the Merger.
The historical and pro forma financial information should be read in conjunction
with the historical  consolidated financial statements of IHS and RoTech and the
related notes thereto and with the unaudited pro forma financial information and
the related notes thereto  appearing  elsewhere or  incorporated by reference in
this  Joint  Proxy  Statement/Prospectus.  See  "Selected  Historical  Financial
Information of IHS," "- Selected  Historical  Financial  Information of RoTech,"
"Unaudited  Pro Forma  Financial  Information"  and  "Incorporation  of  Certain
Information by Reference."

     The following  information  is not  necessarily  indicative of the combined
results of  operations or combined  financial  position that would have resulted
had the Merger been consummated at the beginning of the periods  indicated,  nor
is it  necessarily  indicative  of the combined  results of operations in future
periods or future combined stockholders' equity.

<TABLE>
<CAPTION>
                                                               STOCKHOLDERS'
                                            PER COMMON AND        EQUITY
                                           COMMON EQUIVALENT   (BOOK VALUE)
                                                SHARE       -------------------
                                         1996(1)   1997(2)   1996(3)   1997(4)
                                        --------- --------- --------- ---------
<S>                                     <C>       <C>       <C>       <C>
EARNINGS BEFORE EXTRAORDINARY ITEM PER
 SHARE (FULLY-DILUTED)(5)(6):
IHS
 Historical ...........................   $ 1.82    $ 0.92    $ 22.64   $ 22.90
 Pro forma combined  ..................     1.66      0.90      27.00     27.00
RoTech
 Historical ...........................     0.96      0.56       8.11      8.46
 Pro forma equivalent(7)   ............     0.96      0.52      15.68     15.68
CASH DIVIDENDS PER SHARE:
IHS
 Historical ...........................     0.02         -
 Pro forma combined  ..................     0.02         -
RoTech
 Historical ...........................        -         -
 Pro forma equivalent(7)   ............     0.01         -
</TABLE>

- ----------
(1) Represents  for IHS the year ended  December  31, 1996 and for RoTech the 12
    months ended January 31, 1997.  RoTech's  fiscal year-end is July 31 of each
    year. The RoTech financial data for the 12 months ended January 31, 1997 and
    the six  months  ended  April 30,  1997 both  include  RoTech's  results  of
    operations for the three months ended January 31, 1997.

(2) Represents for IHS the six months ended June 30, 1997 and for RoTech the six
    months ended April 30,  1997.  The RoTech  financial  data for the 12 months
    ended  January 31, 1997 and the six months ended April 30, 1997 both include
    RoTech's results of operations for the three months  ended January 31, 1997.

(3) Represents  for IHS as of December 31, 1996 and for RoTech as of January 31,
    1997.

(4) Represents  for IHS as of June 30, 1997 and for RoTech as of April 30, 1997.


(5) In  each  of  the year ended December 31, 1996 and the six months ended June
    30,  1997,  IHS  recorded  a  loss  on extinguishment of debt, which loss is
    presented  as  an extraordinary item in IHS' statement of operations. See "-
    Selected  Historical  Financial  Information - Selected Historical Financial
    Information of IHS."

(6) Fully-diluted  earnings per share is computed based on the weighted  average
    number of common and common equivalent shares outstanding during the periods
    assuming the dilution resulting from the issuance of outstanding options and
    warrants at the  end-of-period  price per share,  rather  than the  weighted
    average  price for the period,  and the  issuance  of common  stock upon the
    assumed conversion of outstanding convertible  subordinated  debentures.  An
    adjustment  for interest  expense and  amortization  of  underwriting  costs
    related to such debentures is added, net of tax, to earnings for the purpose
    of calculating fully-diluted earnings per share.

(7) RoTech  pro  forma  equivalent  per  common  share  data  is  calculated  by
    multiplying the pro forma IHS amounts by the fixed Exchange Ratio of .5806.


                                       21
<PAGE>

                   SELECTED HISTORICAL FINANCIAL INFORMATION

     The following tables summarize certain selected consolidated financial data
of (i) IHS for each of the years in the five-year period ended December 31, 1996
and the six months  ended June 30, 1996 and 1997 and (ii) RoTech for each of the
years in the  five-year  period  ended July 31, 1996 and the nine  months  ended
April 30, 1996 and 1997. The selected  historical  financial  information of IHS
and RoTech have been derived from, and should be read in  conjunction  with, the
historical  consolidated  financial statements of IHS or RoTech, as the case may
be, including the notes thereto,  incorporated by reference herein.  The results
of IHS as of and for the six  months  ended  June 30,  1997 and the  results  of
RoTech as of and for the nine months  ended  April 30, 1997 are not  necessarily
indicative  of the results to be achieved by IHS and RoTech,  respectively,  for
the full fiscal year.


SELECTED HISTORICAL FINANCIAL INFORMATION OF IHS




<TABLE>
<CAPTION>
                                                             AS OF AND FOR THE YEAR ENDED DECEMBER 31,
                                             -------------------------------------------------------------------------
                                                 1992           1993           1994           1995           1996
                                             ------------- -------------- -------------- -------------- --------------
                                                        (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
<S>                                          <C>           <C>            <C>            <C>            <C>
STATEMENT OF OPERATIONS DATA(1)(2):
Net Revenues:
 Basic medical services   .................. $  100,799      $    113,508   $    269,817 $   368,569    $   389,773
 Specialty medical services  ...............     88,065           162,017        404,401     770,554        999,209
 Management services and other  ............     13,232            20,779         37,884      39,765         45,713
                                             -----------    -------------  ------------- ------------   ------------
  Total ....................................    202,096           296,304        712,102   1,178,888      1,434,695
Cost and Expenses:
 Operating expenses ........................    145,623           212,936        528,131     888,551      1,093,948
 Corporate administrative and general ......     11,927            16,832         37,041      56,016         60,976
 Depreciation and amortization  ............      4,334             8,126         26,367      39,961         41,681
 Rent   ....................................     19,509            23,156         42,158      66,125         77,785
 Interest, net   ...........................      1,493             5,705         20,602      38,977         64,110
 Loss on impairment of long-lived assets
  (3)   ....................................          -                 -              -      83,321              -
 Other non-recurring charges (income)(4)    .         -                 -              -      49,639        (14,457)
                                             -----------    -------------  ------------- ------------   ------------
  Earnings (loss) before equity in earnings
   (loss) of affiliates, income taxes and
   extraordinary items .....................     19,210            29,549         57,803     (43,702)       110,652
Equity in earnings (loss) of affiliates  ...        (36)            1,241          1,176       1,443            828
                                             -----------    -------------  ------------- ------------   ------------
  Earnings (loss) before income taxes and
   extraordinary items .....................     19,174            30,790         58,979     (42,259)       111,480
Income tax provision (benefit)  ............      7,286            12,008         22,117     (16,270)        63,715
                                             -----------    -------------  ------------- ------------   ------------
  Earnings (loss) before extraordinary
   items   .................................     11,888            18,782         36,862     (25,989)        47,765
Extraordinary items(5) .....................      2,524             2,275          4,274       1,013          1,431
                                             -----------    -------------  ------------- ------------   ------------
  Net earnings (loss)  ..................... $    9,364      $     16,507   $     32,588 $   (27,002)   $    46,334
                                             ===========    =============  ============= ============   ============
Per Common Share (fully-diluted)(6):
  Earnings (loss) before extraordinary
   items   ................................. $     1.01      $       1.35   $       1.73 $     (1.21)   $      1.82
  Net earnings (loss)  .....................        .80              1.22           1.57       (1.26)          1.78
                                             ===========    =============  ============= ============   ============
Weighted average number of common and
 common equivalent shares outstanding(6).     1,996,815        17,261,079     27,154,153  21,463,464     31,652,620
                                             ===========    =============  ============= ============   ============
BALANCE SHEET DATA:
 Cash and temporary investments ............ $  103,858      $     65,295   $     63,347 $    41,304    $    41,072
 Working capital ...........................    144,074            69,495         76,383     136,315         57,549
 Total assets ..............................    313,671           776,324      1,255,989   1,433,730      1,993,107
 Long-term debt, including current por-
  tion(7)                                       142,620           402,536        551,452     770,661      1,054,747
 Stockholders' equity  .....................    146,013           216,506        453,811     431,528        534,865


<PAGE>

<CAPTION>
                                                  AS OF AND FOR THE
                                                      SIX MONTHS
                                                    ENDED JUNE 30,
                                             ----------------------------
                                                  1996          1997
                                             -------------- -------------
<S>                                          <C>            <C>
STATEMENT OF OPERATIONS DATA(1)(2):
Net Revenues:
 Basic medical services   ..................   $    195,279   $    176,810
 Specialty medical services  ...............        446,393        722,802
 Management services and other  ............         21,381         19,304
                                              -------------  -------------
  Total ....................................        663,053        918,916
Cost and Expenses:
 Operating expenses ........................        504,169        691,148
 Corporate administrative and general ......         29,947         36,151
 Depreciation and amortization  ............         16,779         30,844
 Rent   ....................................         35,535         49,795
 Interest, net   ...........................         30,102         44,645
 Loss on impairment of long-lived assets
  (3)   ....................................              -              -
 Other non-recurring charges (income)(4)    .             -         20,047
                                              -------------  -------------
  Earnings (loss) before equity in earnings
   (loss) of affiliates, income taxes and
   extraordinary items .....................         46,521         46,286
Equity in earnings (loss) of affiliates  ...            760             98
                                              -------------  -------------
  Earnings (loss) before income taxes and
   extraordinary items .....................         47,281         46,384
Income tax provision (benefit)  ............         18,203         18,090
                                              -------------  -------------
  Earnings (loss) before extraordinary
   items   .................................         29,078         28,294
Extraordinary items(5) .....................          1,431         18,168
                                              -------------  -------------
  Net earnings (loss)  .....................   $     27,647   $     10,126
                                              =============  =============
Per Common Share (fully-diluted)(6):
  Earnings (loss) before extraordinary
   items   .................................   $       1.10   $       0.92
  Net earnings (loss)  .....................           1.05           0.41
                                              =============  =============
Weighted average number of common and
 common equivalent shares outstanding(6).        31,028,123     36,232,591
                                              =============  =============
BALANCE SHEET DATA:
 Cash and temporary investments ............                  $     45,472
 Working capital ...........................                       159,042
 Total assets ..............................                     2,142,647
 Long-term debt, including current por-
  tion(7)                                                        1,218,248
 Stockholders' equity  .....................                       581,319
</TABLE>


- ---------

(1) IHS has grown  substantially  through  acquisitions and the opening of MSUs,
    which  acquisitions and MSU openings  materially affect the comparability of
    the financial  data  reflected  herein.  In addition,  IHS sold its pharmacy
    division in July 1996 (the "Pharmacy


                                       22
<PAGE>

    Sale"),  a majority  interest in its  assisted  living  services  subsidiary
    ("ILC") in October 1996 (the "ILC  Offering") and the remaining  interest in
    ILC in July 1997  (together  with the ILC  Offering,  the "ILC  Sale").  See
    "Unaudited Pro Forma Financial Information."

(2) In 1995, IHS merged with IntegraCare,  Inc. ("IntegraCare") in a transaction
    accounted  for as a  pooling  of  interests.  Accordingly,  IHS'  historical
    financial  statements  for all periods  prior to the  effective  date of the
    IntegraCare merger have been restated to include the results of IntegraCare.

(3) In  December  1995,  IHS  elected  early  implementation  of SFAS  No.  121,
    Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets
    to Be Disposed Of, resulting in a non-cash charge of $83,321,000.


(4) In 1995,  consists of (i) expenses of $1,939,000  related to the merger with
    IntegraCare,  (ii) a $21,915,000 loss on the write-off of accrued management
    fees  ($8,496,000),  loans  ($11,097,000)  and  contract  acquisition  costs
    ($2,322,000)  related to IHS' termination of its agreement,  entered into in
    January 1994, to manage 23 long-term care and psychiatric  facilities  owned
    by Crestwood  Hospital and (iii) the  write-off of  $25,785,000  of deferred
    pre-opening costs resulting from a change in accounting  estimate  regarding
    the  future  benefit  of  deferred  pre-opening  costs.  In  1996,  consists
    primarily of (i) a gain of $34,298,000  from the Pharmacy Sale,  (ii) a loss
    of  $8,497,000  from  its  sale  of  shares  in the  ILC  Offering,  (iii) a
    $7,825,000 loss on write-off of accrued  management fees and loans resulting
    from IHS'  termination of its 10-year  agreement,  entered into in September
    1994, to manage six geriatric care facilities  owned by All Seasons and (iv)
    a  $3,519,000  exit  cost  resulting  from the  closure  of  redundant  home
    healthcare  agencies.  Because  IHS'  investment  in the  Capstone  Pharmacy
    Services, Inc. ("Capstone") common stock received in the Pharmacy Sale had a
    very small tax basis,  the taxable gain on the sale  significantly  exceeded
    the  gain  for  financial  reporting   purposes,   thereby  resulting  in  a
    disproportionately higher income tax provision related to the sale. In 1997,
    consists  primarily  of (i) a gain of  $7,578,000  realized on the shares of
    Capstone  common stock received in the Pharmacy Sale,  (ii) the write-off of
    $6,553,000 of accounting,  legal and other costs resulting from the proposed
    transaction  to acquire (the "Coram Merger  Transaction")  Coram  Healthcare
    Corporation  ("Coram")  and (iii) the  payment  to Coram of  $21,000,000  in
    connection  with the  termination of the proposed Coram Merger  Transaction.
    See "Unaudited Pro Forma Financial Information."


(5) In  1992,  IHS  recorded  a loss on  extinguishment  of  debt of  $4,072,000
    relating  primarily  to  prepayment  charges and the  write-off  of deferred
    financing  costs.  Such loss,  reduced by the  related  income tax effect of
    $1,548,000,  is  presented  for  the  year  ended  December  31,  1992 as an
    extraordinary  loss  of  $2,524,000.   In  1993,  IHS  recorded  a  loss  on
    extinguishment of debt of $3,730,000  relating primarily to the write-off of
    deferred  financing  costs.  Such loss,  reduced by the  related  income tax
    effect of  $1,455,000,  is presented for the year ended December 31, 1993 as
    an  extraordinary  loss of  $2,275,000.  In  1994,  IHS  recorded  a loss on
    extinguishment of debt of $6,839,000  relating primarily to the write-off of
    deferred  financing  costs.  Such loss,  reduced by the  related  income tax
    effect of  $2,565,000,  is presented for the year ended December 31, 1994 as
    an  extraordinary  loss of  $4,274,000.  In  1995,  IHS  recorded  a loss on
    extinguishment  of debt  of  $1,647,000  relating  primarily  to  prepayment
    charges and the write-off of deferred financing costs. Such loss, reduced by
    the related  income tax effect of $634,000,  is presented for the year ended
    December  31, 1995 as an  extraordinary  loss of  $1,013,000.  In 1996,  IHS
    recorded a loss on extinguishment of debt of $2,327,000,  relating primarily
    to the  write-off of deferred  financing  costs.  Such loss,  reduced by the
    related  income tax effect of $896,000,  is  presented  in the  statement of
    operations  for the year ended  December  31, 1996 and the six months  ended
    June 30, 1996 as an extraordinary loss of $1,431,000.  During the six months
    ended  June 30,  1997,  IHS  recorded  a loss on  extinguishment  of debt of
    $29,784,000, representing approximately (i) $23,554,000 of cash payments for
    premium  and  consent  fees   relating  to  the  early   extinguishment   of
    $214,868,000  aggregate  principal amount of IHS' senior  subordinated notes
    and (ii) $6,230,000 of deferred  financing  costs  written-off in connection
    with the early  extinguishment  of such  debt.  Such  loss,  reduced  by the
    related income tax effect of  $11,616,000,  is presented in the statement of
    operations for the six months ended June 30, 1997 as an  extraordinary  loss
    of  $18,168,000.  See "IHS Recent  Developments  Repurchase of 9 5/8% Senior
    Subordinated Notes and 10 3/4% Senior Subordinated Notes."

(6) The  weighted  average  number  of  common  and  common   equivalent  shares
    outstanding  for the years ended December 31, 1992,  1993, 1994 and 1996 and
    the six months ended June 30, 1996 and 1997 includes the assumed  conversion
    of  IHS'  convertible   subordinated   debentures  into  IHS  Common  Stock.
    Additionally,  interest  expense  and  amortization  of  underwriting  costs
    related to such debentures are added,  net of tax, to income for the purpose
    of calculating  fully-diluted  earnings per share.  Such amounts  aggregated
    $183,000, $4,516,000, $10,048,000, $9,888,000, $4,944,000 and $4,904,000 for
    the years ended  December 31, 1992,  1993,  1994 and 1996 and the six months
    ended June 30, 1996 and 1997,  respectively.  The weighted average number of
    common and common equivalent shares  outstanding for the year ended December
    31,  1995  does not  include  the  assumed  conversion  of IHS'  convertible
    subordinated  debentures or the related  interest  expense and  underwriting
    costs, as such conversion would be anti-dilutive.


(7)  In September 1997, IHS issued $500 million  aggregate  principal  amount of
     its 9 1/4% Senior  Subordinated Notes due 2008 and borrowed $750 million of
     term loans under its new revolving credit and term loan facility.  See "IHS
     Recent  Developments  - New Credit  Facility"  and "- Sale of 9 1/4% Senior
     Subordinated Notes due 2008."


                                       23
<PAGE>

SELECTED HISTORICAL FINANCIAL INFORMATION OF ROTECH



<TABLE>
<CAPTION>
                                                               AS OF AND FOR THE FISCAL YEAR ENDED JULY 31,
                                           ------------------------------------------------------------------------------------
                                                  1992               1993               1994           1995          1996
                                           ------------------ ------------------ ------------------ ----------- ---------------
                                                                 (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                        <C>                <C>                <C>                <C>         <C>
STATEMENT OF OPERATIONS DATA:
Operating revenue:
 Home respiratory therapy & equip-
  ment                                      $    15,706 (a)    $    23,857 (a)    $    41,579 (a)     $  56,533   $     110,118
 Home medical equipment & supplies                      (a)                (a)                (a)        32,305          92,062
 Home infusion therapy & other phar-
  macy related services                          19,959             21,715             25,492            33,554          41,498
 Other products & services ...............        1,457              2,811              4,399            11,719          19,352
                                            -----------        -----------        -----------        ----------  --------------
  Total  .................................       37,122             48,383             71,470           134,111         263,030
Cost and expenses:
 Cost of revenue  ........................        8,434             12,359             17,409            36,288          71,013
 Selling, general and administrative   ...       20,208             25,064             35,880            66,477         127,357
 Depreciation and amortization   .........        2,486              2,801              5,338             9,565          26,520
 Interest   ..............................          305                 76                 67               835           5,228
                                            -----------        -----------        -----------        ----------  --------------
  Total cost and expenses  ...............       31,433             40,300             58,694           113,165         230,118
Income before income taxes ...............        5,689              8,083             12,776            20,946          32,912
Income tax expense   .....................        2,003              2,956              4,664             7,801          12,356
                                            -----------        -----------        -----------        ----------  --------------
  Net income   ...........................  $     3,686        $     5,127        $     8,112         $  13,145   $      20,556
                                            ===========        ===========        ===========        ==========  ==============
Net income per share(b):
 Primary .................................  $      0.30        $      0.38        $      0.50         $    0.64   $        0.83
 Fully diluted ...........................  $      0.30        $      0.38        $      0.50         $    0.63   $        0.82
                                            ===========        ===========        ===========        ==========  ==============
Other Data:
Weighted average shares outstanding(b):
 Primary .................................       12,350             13,384             16,294            20,684          24,657
 Fully-diluted ...........................       12,350             13,384             16,294            20,984          25,206
                                            ===========        ===========        ===========        ==========  ==============
BALANCE SHEET DATA:
Working capital (deficit)  ...............  $     9,617        $    18,203        $    27,783         $  41,587   $      36,007
Total assets   ...........................       25,137             40,019             94,433           175,425         374,614
Long-term debt (less current portion)  ...        1,053                  -                  -                 -         110,000(d)
Shareholders' equity(b) ..................       17,518             36,197             83,320           149,659         174,675



<CAPTION>
                                                  AS OF AND FOR THE
                                             NINE MONTHS ENDED APRIL 30,
                                           -------------------------------
                                              1996            1997
                                           ----------- -------------------
<S>                                        <C>         <C>
STATEMENT OF OPERATIONS DATA:
Operating revenue:
 Home respiratory therapy & equip-
  ment                                       $  75,108  $    144,403
 Home medical equipment & supplies        .     62,297        84,027
 Home infusion therapy & other phar-
  macy related services                         28,121        49,200
 Other products & services ...............      14,040        19,944
                                            ----------  ------------
  Total  .................................     179,566       297,574
Cost and expenses:
 Cost of revenue  ........................      49,312        77,091
 Selling, general and administrative   ...      86,602       145,710
 Depreciation and amortization   .........      17,502        30,344
 Interest   ..............................       3,098         9,214
                                            ----------  ------------
  Total cost and expenses  ...............     156,514       262,359
Income before income taxes ...............      23,052        35,215
Income tax expense   .....................       8,356        13,322
                                            ----------  ------------
  Net income   ...........................   $  14,696  $     21,893
                                            ==========  ============
Net income per share(b):
 Primary .................................   $    0.60  $       0.84
 Fully diluted ...........................   $    0.60  $       0.81 (d)
                                            ==========  ============
Other Data:
Weighted average shares outstanding(b):
 Primary .................................      24,354        26,186
 Fully-diluted ...........................      24,680        30,729 (d)
                                            ==========  ============
BALANCE SHEET DATA:
Working capital (deficit)  ...............              $    (37,195)(c)
Total assets   ...........................                   518,567
Long-term debt (less current portion)  ...                   110,000 (d)
Shareholders' equity(b) ..................                   201,214
</TABLE>


- ---------

RoTech has acquired various businesses in the five years shown above. Results of
these acquisitions' operations are included from the respective dates acquired.

(a) A breakout of home  respiratory  therapy  and  equipment  revenues  and home
    medical  equipment  and supplies was not  available for the years ended July
    31, 1992,  1993 and 1994. All revenue related to these two product lines has
    been  presented as "home  respiratory  therapy and  equipment" for the years
    indicated.

(b) On May  21,  1996,  RoTech  distributed  a 100%  common  stock  dividend  to
    shareholders of record as of April 30, 1996 to effect a 2-for-1 stock split.
    Shareholders'  equity has been restated to give  retroactive  recognition to
    the stock split for all periods. In addition, per share amounts and weighted
    average shares  outstanding have been restated to give retroactive effect to
    the split.

(c) Notes  payable  to  banks  of $162  million  are  classified  as  short-term
    liabilities, causing the working capital deficit at April 30, 1997.

(d)  Represents  5 1/4%  convertible  subordinated  debentures  due 2003 and the
     related dilutive effect for the nine months ended April 30, 1997.


                                       24
<PAGE>

               SUMMARY UNAUDITED PRO FORMA FINANCIAL INFORMATION


     The  following  unaudited  pro forma summary  financial  information  gives
effect to the Merger  using the purchase  method of  accounting  (including  the
effect of the refinancing of certain RoTech  indebtedness in connection with the
Merger),  assuming a price per share of IHS Common Stock of $34.69 (based on the
closing price of IHS Common Stock on August 11, 1997)). The following  unaudited
pro forma summary  financial  information  does not give pro forma effect to (i)
the other  acquisitions  and  divestitures  consummated by IHS and RoTech during
1996 and 1997, (ii) the Proposed Lithotripsy Acquisition, (iii) the Proposed CCA
Acquisition (together with the Proposed Lithotripsy  Acquisition,  the "Proposed
Acquisitions"), (iv) IHS' issuance of $500 million aggregate principal amount of
9 1/4%  Senior  Subordinated  Notes  due 2008  (the "9 1/4%  Senior  Notes")  in
September  1997 and (v) IHS'  borrowing  of $750 million of term loans under its
new $1.75  billion  revolving  credit and term loan  facility  (the "New  Credit
Facility") in September 1997. See "Unaudited Pro Forma  Financial  Information -
Pro Forma Financial  Information for the Combined Company and Other Acquisitions
and Divestitures"  for information  showing the pro forma effect on the combined
company of certain other  acquisitions  and  divestitures  consummated by IHS in
1996 and  1997 and  "Unaudited  Pro  Forma  Financial  Information  - Pro  Forma
Financial  Information for RoTech" for information  showing the pro forma effect
on RoTech of certain acquisitions consummated by RoTech in the fiscal year ended
July 31, 1997. The unaudited pro forma summary  financial  information  provided
below  is  not  necessarily  indicative  of the  results  of  operations  or the
financial   position  which  would  have  been  attained  had  the  Merger  been
consummated  as of the  indicated  dates or which may be attained in the future.
This  unaudited  pro  forma  summary  financial  information  should  be read in
conjunction with the historical  financial  statements of IHS and RoTech,  which
are  included  or  incorporated  by  reference  elsewhere  in this  Joint  Proxy
Statement/Prospectus  and the information  set forth under  "Unaudited Pro Forma
Financial    Information"    presented    elsewhere    in   this   Joint   Proxy
Statement/Prospectus. 




<TABLE>
<CAPTION>
                                                                                     AS OF AND
                                                                                     FOR THE
                                                                     FOR THE        SIX MONTHS
                                                                    YEAR ENDED        ENDED
                                                                   DECEMBER 31,      JUNE 30,
                                                                     1996(1)         1997(2)
                                                                   --------------   ------------
                                                                    (IN THOUSANDS, EXCEPT PER
                                                                           SHARE AMOUNTS)
<S>                                                                <C>              <C>
STATEMENT OF OPERATIONS DATA:(3)
Net revenues:
 Basic medical services  .......................................    $  389,773        $  176,810
 Specialty medical services ....................................     1,343,799           930,068
 Management services and other .................................        45,713            19,304
                                                                    ----------       -----------
  Total   ......................................................     1,779,285         1,126,182
                                                                    ----------       -----------
Cost and expenses:
 Operating expenses   ..........................................     1,352,839           845,333
 Corporate administrative and general   ........................        60,976            36,151
 Depreciation and amortization .................................        79,738            51,505
 Rent  .........................................................        77,785            49,795
 Interest, net  ................................................        75,420            52,988
 Other non-recurring charges (income)(4)   .....................       (14,457)           20,047
                                                                    ----------       -----------
  Earnings before equity in earnings of affiliates, income taxes
    and extraordinary items ....................................       146,984            70,363
Equity in earnings of affiliates  ..............................           828                98
                                                                    ----------       -----------
  Earnings before income taxes and extraordinary items .........       147,812            70,461
Income tax provision  ..........................................        80,249            28,569
                                                                    ----------       -----------
  Earnings before extraordinary items(5)   .....................    $   67,563        $   41,892
                                                                    ==========       ===========
Per Common Share (fully-diluted):
 Earnings before extraordinary items ...........................    $     1.66        $     0.90
                                                                    ==========       ===========
Weighted average number of common shares outstanding   .........        46,675            51,839
                                                                    ==========       ===========
BALANCE SHEET DATA:
Cash and temporary investments .................................                      $   54,210
Working capital(6) .............................................                         269,661
Total assets ...................................................                       2,954,677
Long-term debt, including current portion(7)  ..................                       1,490,262
Stockholders' equity  ..........................................                       1,064,318
</TABLE>



                                       25
<PAGE>

(1) Consists of the results of operations of IHS for the year ended December 31,
    1996 and RoTech for the 12 months  ended  January  31,  1997.  The pro forma
    results of operations  data for the year ended December 31, 1996 and the six
    months ended June 30, 1997 both include  RoTech's  results of operations for
    the three months ended January 31, 1997.

(2) Consists of the results of  operations  of IHS for the six months ended June
    30 , 1997 and RoTech for the six months  ended April 30,  1997,  and balance
    sheet data of IHS as of June 30, 1997 and RoTech as of April 30,  1997.  The
    pro forma  results of operations  data for the year ended  December 31, 1996
    and the six months  ended June 30,  1997 both  include  RoTech's  results of
    operations for the three months ended January 31, 1997.

(3) Certain amounts have been  reclassified  to conform the  presentation of IHS
    and RoTech.


(4) In 1996,  consists  primarily of (i) a gain of $34,298,000 from the Pharmacy
    Sale,  (ii) a loss  of  $8,497,000  from  IHS'  sale  of  shares  in the ILC
    Offering,  (iii) a $7,825,000  loss on write-off of accrued  management fees
    and loans resulting from IHS' termination of its 10-year agreement,  entered
    into in September 1994, to manage six geriatric care facilities owned by All
    Seasons  and (iv) a  $3,519,000  exit cost  resulting  from IHS'  closure of
    redundant home healthcare agencies.  Because IHS' investment in the Capstone
    common stock  received in the Pharmacy Sale had a very small tax basis,  the
    taxable  gain on the sale  significantly  exceeded  the  gain for  financial
    reporting purposes,  thereby resulting in a disproportionately higher income
    tax provision related to the sale. In 1997, consists primarily of (i) a gain
    of $7,578,000  realized on the shares of Capstone  common stock  received in
    the Pharmacy Sale, (ii) the write-off of $6,553,000 of accounting, legal and
    other costs resulting from IHS' proposed Coram Merger  Transaction and (iii)
    the payment to Coram of  $21,000,000 in connection  with the  termination of
    the proposed Coram Merger  Transaction.  See "Unaudited Pro Forma  Financial
    Information."


(5) In  1996,  IHS  recorded  a loss on  extinguishment  of debt of  $2,327,000,
    relating  primarily to the write-off of deferred financing costs. Such loss,
    reduced by the related  income tax effect of $896,000,  is presented for the
    year ended December 31, 1996 as an extraordinary loss of $1,431,000.  During
    the six months ended June 30, 1997, IHS recorded a loss on extinguishment of
    debt of  $29,784,000,  representing  approximately  (i)  $23,554,000 of cash
    payments for premium and consent fees  relating to the early  extinguishment
    of $214,868,000 aggregate principal amount of IHS' senior subordinated notes
    and (ii) $6,230,000 of deferred  financing  costs  written-off in connection
    with the early  extinguishment  of such  debt.  Such  loss,  reduced  by the
    related income tax effect of  $11,616,000,  is presented in the statement of
    operations for the six months ended June 30, 1997 as an  extraordinary  loss
    of $18,168,000.  See "IHS Recent  Developments - Repurchase of 9 5/8% Senior
    Subordinated Notes and 10 3/4% Senior Subordinated Notes."


(6) Borrowings  under  RoTech's  revolving  credit  facility are  classified  on
    RoTech's balance sheet as current liabilities. Amounts outstanding under the
    RoTech  facility  will be  refinanced  in  connection  with the Merger  with
    borrowings under IHS' New Credit  Facility,  which borrowings are classified
    as long-term debt. See "IHS Recent Developments - New Credit Facility."

(7) In September 1997, IHS issued $500 million aggregate principal amount of its
    9 1/4% Senior  Notes and  borrowed  $750 million of term loans under the New
    Credit Facility.  See "IHS Recent Developments - New Credit Facility" and "-
    Sale of 9 1/4% Senior Subordinated Notes due 2008."



                                       26
<PAGE>

                                  RISK FACTORS

     In   addition   to   the   other    information   in   this   Joint   Proxy
Statement/Prospectus,  the following  factors should be considered  carefully by
RoTech and IHS stockholders in evaluating the Merger and determining  whether or
not to vote in favor of the approval and adoption of the Merger Agreement.  This
Joint  Proxy   Statement/Prospectus   contains,   in   addition  to   historical
information,  forward-looking  statements that involve risks and  uncertainties.
The combined  company's  actual  results could differ  materially.  Factors that
could cause or contribute to such differences  include,  but are not limited to,
those discussed below, as well as those discussed  elsewhere in this Joint Proxy
Statement/Prospectus.


RISKS RELATED TO SUBSTANTIAL INDEBTEDNESS


     IHS' indebtedness is substantial in relation to its  stockholders'  equity.
At June 30, 1997,  IHS' total debt,  including  current  portion,  accounted for
67.7% of its total  capitalization.  On a pro forma basis after giving effect to
the Merger, the Proposed Acquisitions,  the New Credit Facility and the issuance
of the 9 1/4% Senior Notes and the use of proceeds  therefrom  and from the term
loan portion of the New Credit Facility to repay amounts  outstanding  under the
prior credit  facility,  to pay the cash  portion of the  purchase  price of the
Proposed  Acquisitions  and to repay certain  indebtedness  to be assumed in the
Merger  and the  Proposed  Acquisitions,  IHS'  total  debt,  including  current
portion,  at  June  30,  1997  accounted  for  66.7%  of  its  total  pro  forma
capitalization.  IHS also has significant  lease obligations with respect to the
facilities operated pursuant to long-term leases, which aggregated approximately
$212.1  million at June 30,  1997  ($227.1  million on a pro forma  basis  after
giving  effect the  Merger).  For the year ended  December  31, 1996 and the six
months ended June 30, 1996 and 1997, IHS' rent expense was $77.8 million ($108.9
million on a pro forma basis after giving effect to the Merger,  the acquisition
of First American (the "First American Acquisition"), the ILC Sale, the Pharmacy
Sale and certain other acquisitions  consummated by IHS in 1996 and 1997), $35.5
million  ($49.8  million on a pro forma basis after giving effect to the Merger,
the First  American  Acquisition,  the ILC Sale,  the Pharmacy  Sale and certain
other acquisitions consummated by IHS in 1996 and 1997) and $49.8 million ($57.8
million on a pro forma basis after giving effect to the Merger and certain other
acquisitions consummated by IHS in 1997), respectively. See "Unaudited Pro Forma
Financial Information - Pro Forma Financial Information for the Combined Company
and Other Acquisitions and  Divestitures." In addition,  IHS is obligated to pay
up to an additional $155 million in respect of the acquisition of First American
during 2000 to 2004 under certain circumstances.  See "IHS Recent Developments -
First American  Acquisition."  IHS' strategy of expanding its specialty  medical
services and growing through  acquisitions may require additional  borrowings in
order to finance working capital, capital expenditures and the purchase price of
any  acquisitions.  The  degree to which IHS is  leveraged,  as well as its rent
expense,  could have  important  consequences  to  holders of IHS Common  Stock,
including:  (i) IHS'  ability to obtain  additional  financing in the future for
working  capital,  capital  expenditures,   acquisitions  or  general  corporate
purposes  may be  impaired;  (ii) a  substantial  portion of IHS' cash flow from
operations  may be  dedicated  to the payment of  principal  and interest on its
indebtedness  and rent expense,  thereby reducing the funds available to IHS for
its  operations;  (iii) certain of IHS'  borrowings  bear,  and will continue to
bear,  variable  rates of  interest,  which  expose IHS to increases in interest
rates;  and (iv)  certain  of IHS'  indebtedness  contains  financial  and other
restrictive covenants,  including those restricting the incurrence of additional
indebtedness,  the  creation  of liens,  the payment of  dividends  and sales of
assets and imposing minimum net worth requirements.  In addition,  IHS' leverage
may also  adversely  affect  IHS'  ability to respond to changing  business  and
economic  conditions or continue its growth strategy.  There can be no assurance
that  IHS'  operating  results  will  be  sufficient  for  the  payment  of IHS'
indebtedness.  If IHS were unable to meet interest, principal or lease payments,
or satisfy financial  covenants,  it could be required to seek  renegotiation of
such payments and/or covenants or obtain additional equity or debt financing. To
the extent IHS finances its  activities  with  additional  debt,  IHS may become
subject to certain  additional  financial and other  covenants that may restrict
its ability to pursue its growth  strategy.  There can be no assurance  that any
such  efforts  would be  successful  or  timely  or that  the  terms of any such
financing or  refinancing  would be  acceptable  to IHS. See "- Risks Related to
Capital Requirements" and "Description of Certain IHS Indebtedness."


                                       27

<PAGE>


     In connection  with IHS'  offering of the 9 1/4% Senior  Notes,  Standard &
Poors  ("S&P")   confirmed  its  B  rating  of  IHS'  other   subordinated  debt
obligations,  but with a negative outlook, and assigned the same rating to the 9
1/4% Senior Notes. S&P stated that IHS'  speculative-grade  ratings reflect IHS'
aggressive transition toward becoming a full-service  alternate-site  healthcare
provider, and its limited cash flow relative to its heavy debt burden. S&P noted
that IHS would be greatly  challenged to control,  integrate and further  expand
operations  that were only a quarter of their current size just three years ago,
and also  noted  the  continuing  uncertainty  with  regard to the  adequacy  of
reimbursement  from government  sponsored programs for the indigent and elderly.
S&P  also  noted  that  there  is the  potential  that  a  large  debt  financed
acquisition could lead to a ratings  downgrade.  In connection with the offering
of the 9 1/4% Senior Notes, Moody's Investors Service ("Moody's")  downgraded to
B2 IHS' other senior  subordinated debt obligations,  but noted that the outlook
for the rating was  stable,  and  assigned  the new rating to the 9 1/4%  Senior
Notes. Moody's stated that the rating action reflects Moody's concern about IHS'
continued  rapid  growth  through  acquisitions,  which has resulted in negative
tangible  equity of $114 million,  making no adjustment  for the $259 million of
convertible debt outstanding. Moody's also stated that the availability provided
by the  New  Credit  Facility  and the 9 1/4%  Senior  Notes  positioned  IHS to
complete sizable  acquisition  transactions  using solely debt.  Moody's further
noted that the rating  reflects that there are significant  changes  underway in
the  reimbursement  of services  rendered by IHS,  and that the exact  impact of
these changes is uncertain. 


RISKS ASSOCIATED WITH GROWTH THROUGH ACQUISITIONS AND INTERNAL DEVELOPMENT

     IHS' growth  strategy  involves  growth through  acquisitions  and internal
development  and, as a result,  IHS is subject to various risks  associated with
this growth strategy.  IHS' planned expansion and growth require that IHS expand
its  home  healthcare  services  through  the  acquisition  of  additional  home
healthcare  providers  and that IHS acquire,  or establish  relationships  with,
third parties which provide  post-acute care services not currently  provided by
IHS, that  additional  MSUs be established in IHS' existing  facilities and that
IHS  acquire,  lease or  acquire  the  right to  manage  for  others  additional
facilities  in which MSUs can be  established.  Such  expansion  and growth will
depend on IHS' ability to create demand for its post-acute  care  programs,  the
availability of suitable  acquisition,  lease or management  candidates and IHS'
ability to finance such acquisitions and growth.  The successful  implementation
of IHS' post-acute  healthcare  system,  including the capitation of rates, will
depend on IHS'  ability to expand  the amount of  post-acute  care  services  it
offers directly to its patients rather than through third-party providers. There
can be no assurance that suitable acquisition  candidates will be located,  that
acquisitions can be consummated,  that acquired  facilities and companies can be
successfully  integrated  into IHS'  operations,  that MSUs can be  successfully
established in acquired  facilities or that IHS' post-acute  healthcare  system,
including  the  capitation  of  rates,  can  be  successfully  implemented.  The
post-acute  care  market  is  highly  competitive,  and  IHS  faces  substantial
competition from hospitals,  subacute care providers,  rehabilitation  providers
and home  healthcare  providers,  including  competition for  acquisitions.  IHS
anticipates that competition for acquisition opportunities will intensify due to
the ongoing  consolidation in the healthcare  industry.  See "- Risks Related to
Managed Care Strategy" and "- Competition."


     The successful integration of acquired businesses, including First American
and, if the Merger and the Proposed  Acquisitions are consummated,  RoTech,  the
Coram  Lithotripsy  Division  and CCA, is  important  to IHS'  future  financial
performance.  The anticipated benefits from any of these acquisitions may not be
achieved  unless the  operations  of the acquired  businesses  are  successfully
combined with those of IHS in a timely  manner.  The  integration of IHS' recent
acquisitions,  including,  if the  Merger  and  the  Proposed  Acquisitions  are
consummated,  RoTech,  the Coram  Lithotripsy  Division  and CCA,  will  require
substantial  attention  from  management.  The  diversion  of the  attention  of
management,  and any difficulties  encountered in the transition process,  could
have a material  adverse  effect on IHS'  operations and financial  results.  In
addition,  the process of  integrating  the various  businesses  could cause the
interruption  of, or a loss of  momentum  in, the  activities  of some or all of
these businesses,  which could have a material adverse effect on IHS' operations
and financial  results.  There can be no assurance  that IHS will realize any of
the  anticipated  benefits from its  acquisitions.  The  acquisition  of service
companies that are not  profitable,  or the  acquisition of new facilities  that
result in significant integration costs and inefficiencies, could also adversely
affect IHS' profitability.


                                       28
<PAGE>

     IHS' current and anticipated future growth has placed, and will continue to
place,  significant  demands  on  the  management,   operational  and  financial
resources of IHS. IHS' ability to manage its growth  effectively will require it
to continue to improve its  operational,  financial and  management  information
systems  and to  continue to  attract,  train,  motivate,  manage and retain key
employees.  There  can be no  assurance  that  IHS  will be able to  manage  its
expanded operations effectively. See "- Risks Related to Capital Requirements."


     There can be no assurance that IHS will be successful in  implementing  its
strategy or in responding to ongoing  changes in the  healthcare  industry which
may require adjustments to its strategy.  If IHS fails to implement its strategy
successfully or does not respond timely and adequately to ongoing changes in the
healthcare  industry,   IHS'  business,   financial  condition  and  results  of
operations will be materially adversely affected.


RISKS RELATED TO MANAGED CARE STRATEGY

     Managed care payors and  traditional  indemnity  insurers have  experienced
pressure from their  policyholders to curb or reduce the growth in premiums paid
to such  organizations  for healthcare  services.  This pressure has resulted in
demands on  healthcare  service  providers to reduce their prices or to share in
the financial  risk of providing care through  alternate fee structures  such as
capitation or fixed case rates. Given the increasing  importance of managed care
in the healthcare  marketplace and the continued cost containment pressures from
Medicare and Medicaid,  IHS has been  restructuring its operations to enable IHS
to focus on obtaining  contracts with managed care  organizations and to provide
capitated services.  IHS believes that its home healthcare  capabilities will be
an important  component of its ability to provide  services under  capitated and
other alternate fee arrangements. However, to date there has been limited demand
among managed care organizations for post-acute care network services, and there
can be no assurance  that demand for such services will increase.  Further,  IHS
and RoTech have limited  experience in providing  services  under  capitated and
other alternate fee arrangements and setting the applicable rates.  Accordingly,
there can be no assurance that the fees received by IHS and/or RoTech will cover
the cost of services provided. If revenue for capitated services is insufficient
to cover the treatment costs,  IHS' and/or RoTech's  operating  results could be
adversely affected.  As a result, the success of IHS' managed care strategy will
depend in large part on its  ability to  increase  demand  for  post-acute  care
services among managed care organizations,  to obtain favorable  agreements with
managed  care   organizations  and  to  manage  effectively  its  operating  and
healthcare  delivery  costs  through  various  methods,   including  utilization
management and competitive pricing for purchased services.  Additionally,  there
can be no assurance that pricing  pressures  faced by healthcare  providers will
not have a  material  adverse  effect on IHS',  RoTech's  or,  if the  Merger is
consummated,   the  combined  company's  business,  results  of  operations  and
financial condition.

     Further,  pursuing a  strategy  focused on  risk-sharing  fee  arrangements
entails certain  regulatory risks. Many states impose  restrictions on a service
provider's  ability  to  provide  capitated  services  unless  it meets  certain
financial  criteria,  and may view  capitated fee  arrangements  as an insurance
activity,  subjecting the entity accepting the capitated fee to regulation as an
insurance company rather than merely a licensed  healthcare provider accepting a
business  risk in  connection  with the manner in which it is  charging  for its
services.  The laws  governing  risk-sharing  fee  arrangements  for  healthcare
service  providers  are  evolving  and are not  certain  at  this  time.  If the
risk-sharing  activities of IHS and/or RoTech require  licensure as an insurance
company,  there can be no  assurance  that IHS  and/or  RoTech  could  obtain or
maintain the  necessary  licensure,  or that IHS and/or  RoTech would be able to
meet any  financial  criteria  imposed by a state.  If IHS were  precluded  from
providing  services  under  risk-sharing  fee  arrangements,  its  managed  care
strategy  would  be  adversely  affected.   See  "-  Uncertainty  of  Government
Regulation."


RISKS RELATED TO CAPITAL REQUIREMENTS

     IHS' growth strategy  requires  substantial  capital for the acquisition of
additional  home  healthcare  and related  service  providers and geriatric care
facilities and the  establishment  of new, and expansion of existing,  MSUs. The
effective  integration,  operation and expansion of the existing businesses will
also


                                       29
<PAGE>


require  substantial  capital.  IHS expects to finance new  acquisitions  from a
combination of funds from operations,  borrowings under its bank credit facility
and the issuance of debt and equity securities. IHS may raise additional capital
through the issuance of long-term or short-term  indebtedness or the issuance of
additional equity securities in private or public transactions, at such times as
management deems appropriate and the market allows. Any of such financings could
result  in  dilution  of  existing  equity  positions,  increased  interest  and
amortization expense or decreased income to fund future expansion.  There can be
no  assurance  that  acceptable  financing  for future  acquisitions  or for the
integration and expansion of existing businesses and operations can be obtained.
IHS' bank credit facility limits IHS' ability to make acquisitions,  and certain
of  the  indentures  under  which  IHS'  outstanding  senior  subordinated  debt
securities  were  issued  limit IHS'  ability to incur  additional  indebtedness
unless  certain  financial  tests are met. See "- Risks  Related to  Substantial
Indebtedness,"  "Business of IHS - Company Strategy" and "Description of Certain
IHS Indebtedness." 


RISKS RELATED TO THE MERGER AND RECENT ACQUISITIONS


     IHS believes that the Merger represents another step in IHS' development of
a post-acute care network. In addition, IHS has recently completed several major
acquisitions,  including the acquisition of First American,  and is still in the
process  of  integrating  those  acquired  businesses.  The IHS Board and senior
management of IHS face a significant challenge in their efforts to integrate the
acquired  businesses,  including  First  American  and,  if the  Merger  and the
Proposed  Acquisitions are consummated,  RoTech, the Coram Lithotripsy  Division
and CCA. The dedication of management  resources to such integration may detract
attention from the day-to-day  business of IHS. The  difficulties of integration
may be  increased  by the  necessity of  coordinating  geographically  separated
organizations,  integrating  personnel with disparate  business  backgrounds and
combining  different  corporate  cultures.  There can be no assurance that there
will not be substantial costs associated with such activities or that there will
not be other material  adverse effects of these  integration  efforts.  Further,
there can be no assurance that management's  efforts to integrate the operations
of  IHS  and  newly  acquired  companies,  including  RoTech  if the  Merger  is
consummated  and  the  Coram  Lithotripsy  Division  and  CCA  if  the  Proposed
Acquisitions  are  consummated,  will  be  successful  or that  the  anticipated
benefits  of  the  Merger,  the  Proposed   Acquisitions  or  the  other  recent
acquisitions will be fully realized.


     IHS has recently  expanded  significantly  its home healthcare  operations.
During the year ended  December  31, 1996 and the six months ended June 30, 1996
and 1997, home healthcare  accounted for  approximately  16.3%,  4.0% and 30.8%,
respectively,  of IHS' total revenues.  On a pro forma basis after giving effect
to the Merger and the First American Acquisition,  home healthcare accounted for
approximately 43.9%, 38.3% and 42.2%,  respectively,  of IHS' total revenues, of
which approximately 64.2%, 68.8% and 56.3%, respectively,  was derived from home
nursing services and approximately  28.7%,  26.1% and 33.8%,  respectively,  was
derived  from home  respiratory  services.  On a pro forma  basis,  after giving
effect to the  Merger  and the  acquisition  of First  American  (which  derives
substantially all its revenues from Medicare),  approximately  70.7%,  78.3% and
69.2% of IHS' home  healthcare  revenues  were derived from Medicare in the year
ended  December  31,  1996 and the six  months  ended  June 30,  1996 and  1997,
respectively.  Medicare  has  developed a national  fee  schedule  for  infusion
therapy,   respiratory   therapy  and  home  medical  equipment  which  provides
reimbursement at 80% of the amount of any fee on the schedule. The remaining 20%
is  paid  by  other  third  party  payors  (including  Medicaid  in the  case of
"medically  indigent"  patients)  or  patients;  with  respect to home  nursing,
Medicare  generally  reimburses  for the cost  (including  a rate of  return) of
providing such services, up to a regionally adjusted allowable maximum per visit
and per discipline with no fixed limit on the number of visits.  There generally
is no deductible or coinsurance. As a result, there is no reward for efficiency,
provided that costs are below the cap, and traditional home healthcare  services
carry relatively low margins.  However, IHS expects that Medicare will implement
a  prospective  payment  system for home  nursing  services in the next  several
years,  and  implementation  of a prospective  payment system will be a critical
element to the success of IHS' expansion into home nursing services.  Based upon
prior  legislative  proposals,  IHS believes that a prospective  payment  system
would most likely provide a healthcare provider a predetermined rate for a given
service,  with  providers  that have costs  below the  predetermined  rate being
entitled to keep some or all of this difference.  There can be no assurance that
Medicare will implement


                                       30
<PAGE>

a prospective payment system for home nursing services in the next several years
or at all. The  implementation of a prospective  payment system will require IHS
to make contingent  payments  related to the First American  Acquisition of $155
million  over a period of five years.  In addition,  the Balanced  Budget Act of
1997,  enacted in August 1997,  reduces the Medicare national payment limits for
oxygen and oxygen equipment used in home respiratory  therapy by 25% in 1998 and
30% (from 1997 levels) in 1999 and each subsequent  year.  Approximately  22% of
RoTech's  total  revenues for the year ended July 31, 1997 were derived from the
provision  of oxygen  services to Medicare  patients.  The  inability  of IHS to
realize  operating  efficiencies and provide home healthcare  services at a cost
below the established Medicare fee schedule could have a material adverse effect
on IHS' home healthcare  operations and its post-acute care network. See "- Risk
of Adverse  Effect of  Healthcare  Reform,"  "IHS  Recent  Developments  - First
American Acquisition" and "Unaudited Pro Forma Financial Information."


     IHS believes that the Proposed  Acquisitions  represent additional steps in
IHS'  development of its post-acute care network.  However,  consummation of the
Proposed  Acquisitions are subject to a number of conditions,  some of which are
beyond IHS' control.  There can be no assurance  that these  conditions  will be
satisfied. There can also be no assurance that the Proposed Acquisitions will be
consummated on the proposed terms, on different terms or at all.

RISKS RELATED TO HISTORICAL FINANCIAL PERFORMANCE OF FIRST AMERICAN

     During the year ended December 31, 1995 and the nine months ended September
30,  1996,  First  American  recorded  a net loss of  $110.4  million  and $36.2
million,   respectively.   Numerous   factors  have  affected  First  American's
performance and financial  condition prior to its acquisition by IHS, including,
among  others,  high  administrative  costs and the  settlement  of  claims  for
reimbursement  of certain  overpayments  and  unallowable  reimbursements  under
Medicare (which  settlement  resulted in a reduction to patient service revenues
of $54.6 million for the year ended  December 31, 1995 and $10.4 million for the
nine months ended  September  30,  1996).  In  addition,  in February  1996,  in
response to the stoppage by the Health Care Financing Administration ("HCFA") of
its  bi-weekly  periodic  interim  payments  ("PIP")  to First  American,  First
American was forced to declare  bankruptcy.  In March 1996, the bankruptcy court
ordered HCFA to resume PIP payments to First American.  However,  the bankruptcy
filing and operation of First  American in bankruptcy  until its  acquisition by
IHS  adversely  affected  the  business,  results of  operations  and  financial
condition of First American. There can be no assurance that these factors or the
First American  bankruptcy  will not continue to have an adverse effect on First
American's and IHS' business,  financial  condition and results of operations in
the future.  There can be no assurance  that the historical  losses  incurred by
First American will not continue.  See "IHS Recent  Developments  First American
Acquisition."

RELIANCE ON REIMBURSEMENT BY THIRD PARTY PAYORS

     IHS and RoTech  receive  payment for  services  rendered  to patients  from
private  insurers and patients  themselves,  from the Federal  government  under
Medicare,  and from the  states  in  which  they  operate  under  Medicaid.  The
healthcare  industry  is  experiencing  a  trend  toward  cost  containment,  as
government and other third party payors seek to impose lower  reimbursement  and
utilization   rates  and  negotiate   reduced  payment  schedules  with  service
providers.  These  cost  containment  measures,  combined  with  the  increasing
influence of managed care payors and competition  for patients,  has resulted in
reduced rates of reimbursement  for services  provided by IHS and RoTech,  which
has  adversely  affected,  and may continue to adversely  affect,  IHS' margins,
particularly in its skilled nursing and subacute facilities.  Aspects of certain
healthcare  reform  proposals,  such as cutbacks in the  Medicare  and  Medicaid
programs,  reductions  in Medicare  reimbursement  rates and/or  limitations  on
reimbursement  rate  increases,  containment  of healthcare  costs on an interim
basis by means  that  could  include a  short-term  freeze on prices  charged by
healthcare   providers,   and  permitting   greater  state  flexibility  in  the
administration of Medicaid,  could adversely affect IHS and RoTech.  See "- Risk
of Adverse  Effect of Healthcare  Reform."  During the years ended  December 31,
1994, 1995 and 1996 and the six months ended June 30, 1996 and 1997, IHS derived
approximately 56%, 55%, 60%, 57% and 67%, respectively,  of its patient revenues
from  Medicare and  Medicaid.  On a pro forma basis after  giving  effect to the
Merger,  the acquisition of First American (which derives  substantially all its
revenues from Medicare) and the ILC Sale,  approximately  66.5%, 67.5% and 64.7%
of IHS' patient revenues have been derived from Medicare and Medicaid during the
year ended  December  31, 1996 and the six months  ended June 30, 1996 and 1997,
respectively.


                                       31
<PAGE>

     The sources and amounts of IHS' patient revenues derived from the operation
of its geriatric care  facilities and MSU programs are determined by a number of
factors, including licensed bed capacity of its facilities,  occupancy rate, the
mix of patients and the rates of reimbursement among payor categories  (private,
Medicare and  Medicaid).  Changes in the mix of IHS' patients  among the private
pay, Medicare and Medicaid categories can significantly affect the profitability
of IHS'  operations.  IHS' cost of care for its MSU patients  generally  exceeds
regional  reimbursement  limits established under Medicare.  The success of IHS'
MSU  strategy  will  depend  in part on its  ability  to  obtain  per diem  rate
approvals for costs which exceed the Medicare  established  per diem rate limits
and by obtaining  waivers of these  limitations.  There can be no assurance that
IHS will be able to obtain the  waivers  necessary  to enable IHS to recover its
excess costs. See "Business of IHS - Sources of Revenue."

     Managed care  organizations  and other third party payors have continued to
consolidate  to enhance  their  ability to influence  the delivery of healthcare
services. Consequently, the healthcare needs of a large percentage of the United
States  population are provided by a small number of managed care  organizations
and third  party  payors.  These  organizations  generally  enter  into  service
agreements with a limited number of providers for needed services. To the extent
such  organizations  terminate IHS and/or RoTech as a preferred  provider and/or
engage IHS' and/or  RoTech's  competitors as a preferred or exclusive  provider,
the business of IHS and/or RoTech could be materially adversely affected.


RISK OF ADVERSE EFFECT OF HEALTHCARE REFORM

     In addition to extensive existing government healthcare  regulation,  there
are  numerous  initiatives  on the  federal and state  levels for  comprehensive
reforms  affecting  the payment for and  availability  of  healthcare  services,
including a number of proposals  that would  significantly  limit  reimbursement
under  Medicare and Medicaid.  It is not clear at this time what  proposals,  if
any, will be adopted or, if adopted,  what effect such  proposals  would have on
IHS',  RoTech's  or,  following  the Merger,  the combined  company's  business.
Aspects  of certain  of these  healthcare  proposals,  such as  cutbacks  in the
Medicare and Medicaid  programs,  containment of healthcare  costs on an interim
basis by means  that  could  include a  short-term  freeze on prices  charged by
healthcare   providers,   and  permitting   greater  state  flexibility  in  the
administration  of  Medicaid,  could  adversely  affect  IHS and/or  RoTech.  In
addition,  there have been  proposals to convert the current cost  reimbursement
system for home nursing services covered under Medicare to a prospective payment
system.  The  prospective   payment  system  proposals   generally  provide  for
prospectively  established  per  visit  payments  to be  made  for  all  covered
services, which are then subject to an annual aggregate per episode limit at the
end of the year. Home health agencies that are able to keep their total expenses
per visit during the year below their per episode  annual limits will be able to
retain a specified  percentage of the difference,  subject to certain  aggregate
limitations.  Such changes could have a material  adverse  effect on IHS and its
growth strategy and/or on RoTech.  The  implementation of a prospective  payment
system  will  require  IHS to make  contingent  payments  related  to the  First
American  Acquisition of $155 million over a period of five years. The inability
of IHS to provide home  healthcare  and/or  skilled  nursing  services at a cost
below the established Medicare fee schedule could have a material adverse effect
on IHS'  home  healthcare  operations,  post-acute  care  network  and  business
generally.  The Balanced Budget Act of 1997,  enacted in August 1997,  provides,
among other  things,  for a  prospective  payment  system for home nursing to be
implemented for cost reporting  periods beginning on or after October 1, 1999, a
reduction   in  current  cost   reimbursement   for  home   healthcare   pending
implementation of a prospective payment system, reductions (effective January 1,
1998) in  Medicare  reimbursement  for  oxygen  and  oxygen  equipment  for home
respiratory  therapy and a shift of the bulk of home health coverage from Part A
to Part B of Medicare. The failure to implement a prospective payment system for
home nursing  services in the next  several  years could  adversely  affect IHS'
post-acute  care network  strategy.  IHS expects that there will  continue to be
numerous  initiatives on the federal and state levels for comprehensive  reforms
affecting the payment for and  availability  of healthcare  services,  including
proposals that will further limit reimbursement under Medicare and Medicaid.  It
is not  clear at this  time  what  proposals,  if any,  will be  adopted  or, if
adopted,  what effect such proposals  will have on IHS'  business.  See "- Risks
Related to the Merger and Recent  Acquisitions,"  "Reliance on  Reimbursement by
Third Party Payors," and "IHS Recent Developments - First American Acquisition."
There  can  be  no  assurance  that  currently  proposed  or  future  healthcare
legislation  or  other  changes  in  the  administration  or  interpretation  of
governmental healthcare programs will


                                       32
<PAGE>

not  have  an  adverse  effect  on IHS  and/or  RoTech  or that  payments  under
governmental programs will remain at levels comparable to present levels or will
be   sufficient  to  cover  the  costs   allocable  to  patients   eligible  for
reimbursement pursuant to such programs.  Concern about the potential effects of
the proposed  reform  measures has  contributed  to the  volatility of prices of
securities of companies in healthcare and related industries,  including IHS and
RoTech and may similarly affect the price of the IHS Common Stock and the RoTech
Common  Stock in the  future.  See "-  Uncertainty  of  Government  Regulation,"
"Business of IHS - Government  Regulation"  and "Business of RoTech - Government
Regulation."


UNCERTAINTY OF GOVERNMENT REGULATION

     IHS, Rotech and the healthcare  industry generally are subject to extensive
federal,   state  and  local  regulation  governing  licensure  and  conduct  of
operations at existing facilities,  construction of new facilities,  acquisition
of existing facilities, additions of new services, certain capital expenditures,
the  quality of  services  provided  and the manner in which such  services  are
provided and reimbursement for services rendered. Changes in applicable laws and
regulations or new interpretations of existing laws and regulations could have a
material adverse effect on licensure, eligibility for participation, permissible
activities,  operating costs and the levels of reimbursement  from  governmental
and other sources.  There can be no assurance that regulatory  authorities  will
not adopt  changes or new  interpretations  of existing  regulations  that could
adversely  affect IHS  and/or  RoTech.  The  failure  to  maintain  or renew any
required  regulatory  approvals or licenses could prevent IHS and/or RoTech from
offering  existing  services  or  from  obtaining   reimbursement.   In  certain
circumstances,  failure to comply at one  facility may affect the ability of IHS
and/or  RoTech to obtain or maintain  licenses or approvals  under  Medicare and
Medicaid  programs at other  facilities.  In  addition,  in the conduct of their
business IHS' and RoTech's operations are subject to review by federal and state
regulatory agencies.  In the course of these reviews,  problems are from time to
time identified by these  agencies.  Although each of IHS and RoTech has to date
been able to resolve these problems in a manner  satisfactory  to the regulatory
agencies  without a material  adverse  effect on its  business,  there can be no
assurance that it will be able to do so in the future.

     Recently effective  provisions of the regulations adopted under the Omnibus
Budget  Reconciliation Act of 1987 ("OBRA") have implemented stricter guidelines
for annual state  surveys of long-term  care  facilities  and expanded  remedies
available to HCFA to enforce compliance with the detailed regulations  mandating
minimum  healthcare  standards and may significantly  affect the consequences to
IHS if annual or other HCFA facility surveys identify  noncompliance  with these
regulations.  Remedies include fines, new patient admission moratoriums,  denial
of  reimbursement,  federal  or  state  monitoring  of  operations,  closure  of
facilities  and  termination  of  provider   reimbursement   agreements.   These
provisions  eliminate  the ability of operators to appeal the scope and severity
of any  deficiencies  and grant state  regulators  the  authority  to impose new
remedies,  including monetary  penalties,  denial of payments and termination of
the right to participate in the Medicare and/or Medicaid programs.  IHS believes
these new guidelines may result in an increase in the number of facilities  that
will not be in "substantial  compliance"  with the regulations and, as a result,
subject to increased  disciplinary  actions and  remedies,  including  admission
holds  and  termination  of the  right to  participate  in the  Medicare  and/or
Medicaid programs.  In ranking facilities,  survey results subsequent to October
1990  are  considered.  As a  result,  IHS'  acquisition  of  poorly  performing
facilities  could  adversely  affect IHS'  business to the extent  remedies  are
imposed at such facilities.


     In September 1997, President Clinton, in an attempt to curb Medicare fraud,
imposed a moratorium on the certification  under Medicare of new home healthcare
companies,  which moratorium is expected to last  approximately six months,  and
implemented  rules requiring home  healthcare  providers to reapply for Medicare
certification  every three years.  In  addition,  HCFA will double the number of
detailed audits of home healthcare providers it completes each year and increase
by 25% the number of home  healthcare  claims it reviews  each year.  IHS cannot
predict what effect,  if any, these new rules will have on IHS' business and the
expansion of its home healthcare operations.


     IHS and RoTech are also  subject  to  federal  and state laws which  govern
financial and other arrangements between healthcare providers.  These laws often
prohibit  certain  direct and indirect  payments or  fee-splitting  arrangements
between healthcare providers that are designed to induce or


                                       33
<PAGE>

encourage  the referral of patients to, or the  recommendation  of, a particular
provider  for medical  products  and  services.  These laws  include the federal
"Stark Bills", which prohibit, with limited exceptions,  financial relationships
between ancillary service  providers and referring  physicians,  and the federal
"anti-kickback  law", which prohibits,  among other things, the offer,  payment,
solicitation  or receipt of any form of  remuneration in return for the referral
of  Medicare  and  Medicaid  patients.  The Office of  Inspector  General of the
Department  of Health and Human  Services,  the  Department of Justice and other
federal  agencies  interpret  these  fraud and abuse  provisions  liberally  and
enforce them  aggressively.  Members of Congress have proposed  legislation that
would significantly  expand the federal  government's  involvement in curtailing
fraud and abuse and  increase  the  monetary  penalties  for  violation of these
provisions.  In addition,  some states restrict certain  business  relationships
between  physicians  and other  providers of  healthcare  services.  Many states
prohibit business  corporations from providing,  or holding  themselves out as a
provider of,  medical  care.  Possible  sanctions  for violation of any of these
restrictions  or  prohibitions  include  loss of  licensure  or  eligibility  to
participate in reimbursement  programs (including Medicare and Medicaid),  asset
forfeitures  and civil and  criminal  penalties.  These  laws vary from state to
state,  are often  vague  and have  seldom  been  interpreted  by the  courts or
regulatory   agencies.   IHS  and  RoTech  seek  to  structure   their  business
arrangements  in  compliance  with  these laws and,  from time to time,  IHS and
RoTech have  sought  guidance as to the  interpretation  of such laws;  however,
there can be no assurance  that such laws  ultimately  will be  interpreted in a
manner  consistent  with the  practices of IHS and RoTech.  See "Business of IHS
Government Regulation" and "Business of RoTech - Government Regulation."

     In 1994 RoTech began to acquire primary care physician practices as part of
its  strategy  to  develop  integrated  healthcare  delivery  systems.  RoTech's
acquisitions  of primary care  physician  practices are structured to attempt to
comply with federal and state law restrictions on business relationships between
RoTech and persons who may be in a position to refer  patients to RoTech for the
provision of healthcare related items or services. Accordingly, RoTech endeavors
to undertake such acquisitions in a manner where the  consideration  offered and
paid is consistent with fair market value in arms-length transactions and is not
determined  in a manner  that  takes  into  account  the  volume or value of any
referrals or business that might  otherwise be generated  between RoTech and the
physician  whose  practice is to be acquired  and for which  payment may be made
under Medicare or Medicaid.  While RoTech believes that its  acquisitions do not
entail  any  form of  unlawful  remuneration,  there  can be no  assurance  that
enforcement authorities will not attempt to construe the consideration exchanged
in certain  acquisition  transactions as entailing unlawful  remuneration and to
challenge  such  transactions  on such basis.  In many  states,  the  "corporate
practice of medicine doctrine"  prohibits business  corporations from providing,
or holding  themselves  out as providers of, medical care through the employment
of physicians. Although the two states in which RoTech has acquired practices of
primary  care  physicians,  Florida  and  Mississippi,  have  not  adopted  this
prohibition,  there can be no  assurance  that either  state will not adopt this
doctrine in the future.  Enforcement of such doctrine could require  divestiture
of acquired practices or restructuring of physician relationships.

     Many  states  have  adopted  certificate  of need  or  similar  laws  which
generally require that the appropriate state agency approve certain acquisitions
or capital  expenditures  in excess of defined  levels and determine that a need
exists for certain new bed additions,  new services and the  acquisition of such
medical equipment or capital  expenditures or other changes prior to beds and/or
services  being  added.  Many  states  have  placed  a  moratorium  on  granting
additional  certificates  of need or otherwise  stated their intent not to grant
approval  for new beds.  To the  extent  certificates  of need or other  similar
approvals are required for expansion of IHS' operations, either through facility
acquisitions  or expansion or provision of new services or other  changes,  such
expansion could be adversely  affected by the failure or inability to obtain the
necessary  approvals,  changes in the standards applicable to such approvals and
possible delays in, and the expenses associated with, obtaining such approvals.

     IHS and RoTech are unable to predict the future course of federal, state or
local regulation or legislation,  including  Medicare and Medicaid  statutes and
regulations.  Further changes in the regulatory  framework could have a material
adverse  effect on IHS' and/or  RoTech's  business,  results of  operations  and
financial condition. See "- Risk of Adverse Effect of Healthcare Reform."


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<PAGE>

COMPETITION

     The healthcare  industry is highly competitive and is subject to continuing
changes in the  provision  of services and the  selection  and  compensation  of
providers.  IHS and  RoTech  compete  on a local and  regional  basis with other
providers on the basis of the breadth and quality of their services, the quality
of their facilities and, to a more limited extent, price. IHS also competes with
other providers in the acquisition and development of additional  facilities and
service  providers.  IHS' current and potential  competitors  include  national,
regional and local operators of geriatric care facilities,  acute care hospitals
and  rehabilitation  hospitals,  extended care centers,  retirement  centers and
community  home health  agencies,  other home  healthcare  companies and similar
institutions,  many of which  have  significantly  greater  financial  and other
resources  than IHS.  In  addition,  IHS  competes  with a number of  tax-exempt
nonprofit  organizations which can finance acquisitions and capital expenditures
on a tax-exempt basis or receive  charitable  contributions  unavailable to IHS.
New service  introductions and enhancements,  acquisitions,  continued  industry
consolidation  and the  development  of  strategic  relationships  by  IHS'  and
RoTech's  competitors  could  cause a  significant  decline  in sales or loss of
market  acceptance of IHS' and RoTech's services or intense price competition or
make  IHS'  and/or  RoTech's  services  noncompetitive.  Further,  technological
advances in drug delivery systems and the development of new medical  treatments
that cure certain  complex  diseases or reduce the need for healthcare  services
could adversely impact the business of IHS and RoTech. There can be no assurance
that IHS and RoTech  will be able to  compete  successfully  against  current or
future  competitors  or that  competitive  pressures  will not  have a  material
adverse  effect  on IHS',  RoTech's  or,  following  the  Merger,  the  combined
company's  business,  financial  condition  and results of  operations.  IHS and
RoTech also compete with various healthcare providers with respect to attracting
and retaining qualified management and other personnel.  Any significant failure
by IHS and  RoTech to  attract  and  retain  qualified  employees  could  have a
material  adverse effect on their business,  results of operations and financial
condition.  See  "Business  of  IHS  Competition"  and  "Business  of  RoTech  -
Competition."


EFFECT OF CERTAIN ANTI-TAKEOVER PROVISIONS

     IHS' Third Restated  Certificate of Incorporation  and By-laws,  as well as
the DGCL,  contain  certain  provisions  that could have the effect of making it
more difficult for a third party to acquire,  or discouraging a third party from
attempting to acquire,  control of IHS. These  provisions  could limit the price
that certain  investors  might be willing to pay in the future for shares of IHS
Common  Stock.   Certain  of  these  provisions  allow  IHS  to  issue,  without
stockholder  approval,  preferred  stock having voting rights senior to those of
the IHS Common Stock.  Other  provisions  impose  various  procedural  and other
requirements  that  could  make it more  difficult  for  stockholders  to effect
certain corporate actions. In addition, the IHS Stockholders' Rights Plan, which
provides  for  discount  purchase  rights to  certain  stockholders  of IHS upon
certain  acquisitions  of 20% or more of the  outstanding  shares of IHS  Common
Stock,  may also inhibit a change in control of IHS. As a Delaware  corporation,
IHS is  subject  to Section  203 of the DGCL  which,  in  general,  prevents  an
"interested  stockholder"  (defined  generally as a person owning 15% or more of
the  corporation's  outstanding  voting  stock)  from  engaging  in a  "business
combination"  (as defined) for three years following the date such person became
an  interested   stockholder  unless  certain  conditions  are  satisfied.   See
"Description  of IHS Capital Stock - Certain  Provisions of IHS' By-Laws and the
DGCL," "- IHS  Stockholders'  Rights Plan" and  "Comparison of Rights of IHS and
RoTech Stockholders."


POSSIBLE VOLATILITY OF STOCK PRICE; FIXED EXHANGE RATIO

     There may be  significant  volatility  in the  market  price for IHS Common
Stock.  Quarterly operating results of IHS, changes in general conditions in the
economy, the financial markets or the healthcare industry, or other developments
affecting  IHS or its  competitors,  could cause the market  price of IHS Common
Stock to fluctuate substantially.  In addition, in recent years the stock market
and, in particular, the healthcare industry segment, has experienced significant
price and volume fluctuations. This volatility has affected the market prices of
securities  issued by many  companies for reasons  unrelated to their  operating
performance. In the past, following periods of volatility in the market price of
a company's


                                       35
<PAGE>

securities,  securities class action litigation has often been initiated against
such company.  Such litigation could result in substantial costs and a diversion
of  management's  attention and resources,  which could have a material  adverse
effect upon IHS' business, operating results and financial condition.

     Because  the  Exchange  Ratio is fixed at .5806  and will not  increase  or
decrease  due to  fluctuations  in the  market  price of  either  stock,  RoTech
stockholders  will not be  compensated  for decreases in the market price of IHS
Common Stock which could occur before the Effective  Time.  As a result,  in the
event the  market  price of IHS  Common  Stock  decreases,  the value of the IHS
Common  Stock to be received in the Merger in exchange  for RoTech  Common Stock
would  decrease.  In the event the  market  price of IHS  Common  Stock  instead
increases,  the value of the IHS Common  Stock to be  received  in the Merger in
exchange for RoTech Common Stock would increase.  See "The Merger - Terms of the
Merger." Further, the market value of the IHS Common Stock issued in the Merger,
and the market value of the RoTech Common Stock  surrendered in the Merger,  may
vary  significantly  from the price as of the date of  execution  of the  Merger
Agreement,  the date of this  Joint  Proxy  Statement/Prospectus  or the date on
which  stockholders  vote on the  Merger  due to,  among  other  things,  market
perception of the benefits of the Merger, changes in the business, operations or
prospects of IHS and/or  RoTech,  and general  market and  economic  conditions.
There can be no assurance  that following  consummation  of the Merger shares of
IHS Common Stock will not trade below their  historical  trading  price range or
the price of the IHS Common Stock at the Effective Time.


DILUTION OF VOTING POWER OF IHS STOCKHOLDERS


     Consummation  of the Merger will result in an  approximate  60% increase in
the number of shares of IHS Common Stock outstanding.  Stockholders of IHS will,
therefore,  experience a dilution of their voting power. In exchange for 100% of
the  outstanding  RoTech  Common  Stock,  stockholders  of RoTech  will  receive
approximately  37%  of the  voting  stock  of  IHS  which  will  be  outstanding
immediately  following  the  Merger.  Accordingly,   stockholders  of  IHS  will
experience a dilution of approximately  37% of their relative voting power after
the Merger. 


BENEFITS OF THE MERGER TO CERTAIN OFFICERS, DIRECTORS AND AFFILIATES OF ROTECH


     In considering the  recommendation  of the Rotech Board with respect to the
Merger Agreement and the transactions  contemplated thereby, RoTech stockholders
should be aware that certain  members of the RoTech Board,  management of RoTech
and certain  affiliates of RoTech have certain  interests in the Merger that are
in addition to the interests of RoTech stockholders generally.  Certain of these
persons may have participated in the negotiation and consideration of the Merger
Agreement  as  well  as  certain  of the  arrangements  described  below.  These
interests  include,  but are not limited to, the fact that (i) as a condition to
closing, Mr. Stephen P. Griggs,  RoTech's President and Chief Operating Officer,
will enter into a five-year  employment  agreement  and related  agreement  with
RoTech  providing for, among other things,  (a) Mr. Griggs' serving as President
of RoTech at a base salary of $500,000 per annum,  (b) his receipt of a $500,000
bonus in each year in which  RoTech's net income  contribution  to IHS equals or
exceeds specified targets, with an additional bonus determined by IHS to be paid
if the net income contribution  target is exceeded,  (c) a one-time cash sign-on
bonus of $3.5 million, payable at the Closing, (d) the issuance to Mr. Griggs of
warrants to purchase 750,000 shares of IHS Common Stock, at a per share exercise
price equal to the  average  closing  sale price of the IHS Common  Stock on the
NYSE for the 15 business days prior to the Closing  Date,  such warrants to vest
at a rate of 20% per year beginning on the first anniversary of the Closing Date
(subject to acceleration upon Mr. Griggs' death or the occurrence of a change in
control of IHS) and (e) the payment by RoTech to Mr. Griggs of the amount of any
excise tax  payable by him under the  Excise Tax  Provisions  as a result of any
payments to him pursuant to his employment  agreement or in connection  with the
Merger, as well as the income tax and excise tax on such additional compensation
such that,  after the payment of income and excise  taxes,  Mr. Griggs is in the
same economic  position in which he would have been if the Excise Tax Provisions
had not been  applicable;  (ii) Mr.  William P. Kennedy,  RoTech's  Chairman and
Chief  Executive  Officer,  will  enter  into a  severance  and  non-competition
agreement and related  agreement with RoTech  providing for, among other things,
(a) his  resignation as an officer and director of RoTech,  (b) his serving as a
consultant  to RoTech  for three  years for a  consulting  fee of $1.0  million,
payable in one lump sum at the Closing, (c) his agreeing not to compete with IHS
or RoTech for 15 


                                       36
<PAGE>

years in consideration of a non-compete payment of $4.0 million,  payable in one
lump sum at the  Closing,  although  beginning  five years after the Closing Mr.
Kennedy can provide  consulting  services to  competing  businesses  and (d) the
payment by RoTech to Mr.  Kennedy of the amount of any excise tax payable by him
under the Excise Tax  Provisions  as a result of any payments to him pursuant to
his severance and non-competition agreement or in connection with the Merger, as
well as the income tax and excise tax on such additional compensation such that,
after the  payment  of income  and  excise  taxes,  Mr.  Kennedy  is in the same
economic  position in which he would have been if the Excise Tax  Provisions had
not been  applicable;  (iii)  IHS has  reached  an  agreement  in  principle  to
purchase, for $4.0 million, a 30% interest in a newly-formed limited partnership
controlled by Mr. Kennedy, which limited partnership will enter into a marketing
arrangement  for  pharmaceutical  products  produced by Nephron  Pharmaceuticals
Corporation,  a  corporation  wholly-owned  by Mr.  Kennedy,  all on terms to be
mutually  agreed  upon;  (iv) Ms.  Rebecca R. Irish,  RoTech's  Chief  Financial
Officer,  will enter into a severance and non-competition  agreement and related
agreement with RoTech providing for, among other things,  (a) her resignation as
an officer of RoTech,  (b) her serving as a  consultant  to RoTech for two years
for a consulting  fee of $250,000,  payable in one lump sum at the Closing,  (c)
her agreeing not to compete with IHS or RoTech for 15 years in  consideration of
a non-compete  payment of $1.0 million,  payable in one lump sum at the Closing,
although  beginning five years after the Closing Ms. Irish can provide  services
to competing  businesses  as a  consultant,  employee or  otherwise  and (d) the
payment by RoTech to Ms.  Irish of the  amount of any excise tax  payable by her
under the Excise Tax  Provisions  as a result of any payments to her pursuant to
her severance and non-competition agreement or in connection with the Merger, as
well as the income tax and excise tax on such additional compensation such that,
after the payment of income and excise taxes,  Ms. Irish is in the same economic
position in which she would have been if the Excise Tax  Provisions had not been
applicable;  (v) each of the executive officers of RoTech, other than William P.
Kennedy, RoTech's Chairman and Chief Executive Officer and William A. Walker II,
Secretary and a director of RoTech,  currently  holds RoTech Options (as defined
below),  which will be converted into IHS Exchange Options (as defined below) in
the Merger based on the Exchange Ratio; (vi) each of the non-employee  directors
of RoTech holds rights to receive  shares of RoTech Common  Stock,  which rights
will  become  immediately  vested as a result of the  Merger;  and (vii) IHS and
Merger Sub have  agreed,  from and after the  Effective  Time,  to  continue  to
advance legal fees and expenses and to indemnify present and former officers and
directors  of RoTech,  as  provided in RoTech's  Articles of  Incorporation  and
By-laws as now in effect,  and to  continue  to  perform  under  indemnification
agreements  currently in effect  between  RoTech and certain of its officers and
directors,  and IHS has agreed to  maintain in effect for a period of five years
after  the  Effective  Time  policies  of  directors'  and  officers'  liability
insurance providing at least the same coverage as RoTech's current policies,  in
respect of acts,  omissions or matters  occurring  prior to the Effective  Time,
subject to certain limitations  (provided,  however, that the foregoing does not
obligate IHS to provide any greater officers' and directors' liability insurance
than that generally  provided to IHS' officers and directors).  As of the RoTech
Record Date,  directors  and executive  officers of RoTech and their  affiliates
beneficially  owned an  aggregate  of  2,040,703  shares of RoTech  Common Stock
(excluding shares issuable upon exercise of options), representing approximately
7.7% of the shares of RoTech  Common Stock  outstanding  on such date.  See "The
Merger Additional Interests of Certain Persons in the Merger." The directors and
executive  officers of RoTech and certain of their  affiliates have  unanimously
indicated   their   intentions  to  vote  the  shares  of  RoTech  Common  Stock
beneficially owned by them FOR the Merger. 



RISKS RELATED TO FEDERAL INCOME TAX CONSEQUENCES

     Although each of IHS and RoTech has received an opinion of its counsel that
the Merger  constitutes a tax-free  reorganization  under Section  368(a) of the
Code,  neither IHS nor RoTech has  requested or will  receive an advance  ruling
from the Internal  Revenue  Service (the "Service") as to the federal income tax
consequences of the Merger,  and there can be no assurance that the Service will
not  challenge  the opinions of counsel.  If the Merger were not to constitute a
tax-free  reorganization under Section 368(a) of the Code, each holder of RoTech
Common Stock would  recognize gain or loss equal to the  difference  between the
fair market value of the IHS Common Stock  received and cash received in lieu of
fractional  shares and such holder's  basis in the shares of RoTech Common Stock
exchanged therefor.  See "The Merger - Certain Federal Income Tax Consequences."



                                       37
<PAGE>


                            IHS RECENT DEVELOPMENTS


NEW CREDIT FACILITY

     On September 15, 1997,  IHS entered into a $1.75 billion  revolving  credit
and term loan facility with Citibank, N.A., as Administrative Agent, and certain
other  lenders (the "New Credit  Facility") to replace its existing $700 million
revolving  credit facility.  The New Credit Facility  consists of a $750 million
term loan  facility  (the "Term  Facility")  and a $1 billion  revolving  credit
facility,  including  a $100  million  letter  of credit  subfacility  and a $10
million swing line  subfacility (the "Revolving  Facility").  The Term Facility,
all of which was  borrowed on September  17, 1997,  matures on December 31, 2004
and will be  amortized  beginning  December  31,  1998 as  follows:  1998 - $7.5
million;  each of 1999,  2000,  2001 and 2002 - $7.5  million  (payable in equal
quarterly  installments);  2003 - $337.5  million  (payable  in equal  quarterly
installments);   and  2004  -  $375   million   (payable   in  equal   quarterly
installments).  Any unpaid  balance will be due on the maturity  date.  The Term
Facility will bear interest at a rate equal to, at the option of IHS, either (i)
in the case of Eurodollar loans, the sum of (x) one and  three-quarters  percent
or two  percent  (depending  on the  ratio of IHS' Debt (as  defined  in the New
Credit Facility) to earnings before interest, taxes, depreciation,  amortization
and rent, pro forma for any acquisitions or divestitures  during the measurement
period  (the  "Debt/EBITDAR  Ratio"))  and (y) the  interest  rate in the London
interbank  market  for loans in an amount  substantially  equal to the amount of
borrowing and for the period of borrowing selected by IHS or (ii) the sum of (a)
the higher of (1) Citibank,  N.A.'s base rate or (2) one percent plus the latest
overnight  federal  funds  rate  plus  (b)  a  margin  of  one-half  percent  or
three-quarters of one percent  (depending on the Debt/EBITDAR  Ratio).  The Term
Facility can be prepaid at any time in whole or in part without penalty.

     The  Revolving  Facility  will reduce to $800 million on September 30, 2001
and $500 million on September 30, 2002,  with a final  maturity on September 15,
2004;  however,  the $100 million letter of credit  subfacility  and $10 million
swing  line   subfacility   will  remain  at  $100   million  and  $10  million,
respectively, until final maturity. The Revolving Facility will bear interest at
a rate  equal to, at the  option of IHS,  either  (i) in the case of  Eurodollar
loans,  the  sum of (x)  between  three-quarters  of one  percent  and  one  and
three-quarters  percent  (depending  on the  Debt/EBITDAR  Ratio)  and  (y)  the
interest  rate  in  the  London   interbank   market  for  loans  in  an  amount
substantially  equal to the amount of borrowing  and for the period of borrowing
selected by IHS or (ii) the sum of (a) the higher of (1)  Citibank,  N.A.'s base
rate or (2) one percent plus the latest overnight  federal funds rate plus (b) a
margin  of  between  zero  percent  and  one-half  percent   (depending  on  the
Debt/EBITDAR  Ratio).  Amounts  repaid  under  the  Revolving  Facility  may  be
reborrowed prior to the maturity date.

     The New  Credit  Facility  limits  IHS'  ability to incur  indebtedness  or
contingent obligations,  to make additional acquisitions,  to sell or dispose of
assets,  to create or incur liens on assets,  to pay  dividends,  to purchase or
redeem  IHS'  stock  and to  merge or  consolidate  with any  other  person.  In
addition,  the New Credit  Facility  requires  that IHS meet  certain  financial
ratios,  and  provides  the banks with the right to require  the  payment of all
amounts  outstanding under the facility,  and to terminate all commitments under
the facility, if there is a change in control of IHS or if any person other than
Dr. Robert N. Elkins,  IHS'  Chairman and Chief  Executive  Officer,  or a group
managed by Dr. Elkins, owns more than 40% of IHS' stock. The New Credit Facility
is guaranteed by all of IHS' subsidiaries (other than inactive subsidiaries) and
secured  by a  pledge  of  all  of  the  stock  of  substantially  all  of  IHS'
subsidiaries.

     The New Credit  Facility  replaced IHS' $700 million  credit  facility (the
"Prior Credit  Facility").  As a result,  IHS anticipates that it will record an
extraordinary  loss on extinguishment of debt of approximately $2.4 million (net
of related tax benefit of  approximately  $1.6  million) in the third quarter of
1997  resulting from the write-off of deferred  financing  costs of $4.0 million
related to the Prior Credit Facility.


PROPOSED ACQUISITIONS

     Proposed  Lithotripsy  Acquisition.  On August 21,  1997,  IHS, T2 Medical,
Inc., a  wholly-owned  subsidiary  of Coram,  Coram  Healthcare  Corporation  of
Greater New York, a wholly-owned  subsidiary of Coram,  and Coram entered into a
purchase  agreement (the  "Lithotripsy  Purchase  Agreement")  providing for the
purchase  by IHS of  substantially  all of the  assets  of  Coram's  Lithotripsy
Division, which 


                                       38
<PAGE>


operates 20 mobile lithotripsy units and 13 fixed-site machines in 180 locations
in 18 states. The Coram Lithotripsy  Division also provides maintenance services
to its own and third-party  equipment.  Lithotripsy is a non-invasive  technique
that utilizes shock waves to disintegrate  kidney stones.  The Coram Lithotripsy
Division  had  revenues  of $49.0  million and pre-tax  income  (after  minority
interest) of $21.8 million for the year ended  December 31, 1996 and revenues of
$23.9 million and pre-tax income (after minority  interest) of $11.9 million for
the six months ended June 30, 1997.

     Coram's  agreements with its lithotripsy  partners,  which IHS will assume,
contemplate  that Coram will acquire the remaining  interest in each partnership
at a defined price in the event that  legislation is passed or  regulations  are
adopted or interpreted that would prevent the physician  partners from owning an
interest in the partnership and using the  partnership's  lithotripsy  equipment
for the treatment of his or her patients.  Coram has represented to IHS that its
partnership  arrangements  with  physicians in its  lithotripsy  business are in
compliance  with  current  law.  The  sale  by  Coram  of its  interests  in the
partnerships to IHS requires the consent of the partners of each partnership.

     Within the last three years,  HCFA  released a proposed  rule  defining the
rate at  which  ambulatory  surgery  centers  and  certain  hospitals  would  be
reimbursed for the technical component of a lithotripsy procedure. This proposed
rule has not been  finalized.  IHS cannot  predict  what the final rate for such
reimbursement will be or what effect, if any, the adoption of this proposed rule
would have on lithotripsy revenue and whether this decreased  reimbursement rate
will be  applied to  lithotripsy  procedures  performed  at  hospitals,  where a
majority of the Coram Lithotripsy  Division's lithotripsy machines are currently
utilized.

     The  Lithotripsy  Purchase  Agreement  provides  that IHS  will pay  $130.0
million in cash for the Coram Lithotripsy Division,  subject to reduction in the
event of adverse changes in the business of the Coram Lithotripsy Division prior
to the closing,  as described in the Lithotripsy  Purchase  Agreement.  IHS will
assume  $1.0  million  of  intercompany  debt to Coram in the  transaction.  The
closing of the Proposed Lithotripsy  Acquisition,  which is expected to occur in
the fourth quarter of 1997, is subject to customary conditions, including, among
others,  receipt of  required  regulatory  approvals  and third  party  consents
(including the other partners in the 13 partnerships which operate a substantial
portion of the Coram Lithotripsy Division's business).  The Lithotripsy Purchase
Agreement provides for the payment of break-up fees under certain circumstances.
IHS  intends to use the  proceeds from the sale of the 9 1/4%  Senior  Notes and
borrowings  under  the Term  Facility  to pay the  purchase  price for the Coram
Lithotripsy Division.

     There can be no assurance that the Proposed Lithotripsy Acquisition will be
consummated on these terms, on different terms or at all.

     Community  Care of America,  Inc. On August 1, 1997,  IHS, IHS  Acquisition
XXVI,  Inc., a  wholly-owned  subsidiary of IHS ("CCA Merger  Sub"),  and CCA, a
related party  company,  entered into a definitive  agreement and plan of merger
(the "CCA Merger  Agreement")  providing for (i) the  commencement by CCA Merger
Sub of a cash tender offer for all the outstanding  common stock of CCA at $4.00
per  share and (ii) if  certain  conditions  are met,  including  that  there be
tendered and accepted for payment at least a majority of the outstanding  common
stock of CCA on a  fully-diluted  basis,  the  merger of CCA Merger Sub with and
into CCA, with CCA becoming a  wholly-owned  subsidiary of IHS. CCA develops and
operates skilled nursing facilities in medically  underserved rural communities.
CCA currently operates 54 licensed long-term care facilities with 4,450 licensed
beds, one rural healthcare clinic, two outpatient  rehabilitation  centers,  one
child day care center and 115 assisted living units within six of the facilities
which CCA  operates.  CCA  currently  operates  in Alabama,  Colorado,  Florida,
Georgia, Iowa, Kansas, Louisiana, Maine, Missouri,  Nebraska, Texas and Wyoming.
According  to CCA's  filings  with the  Commission,  CCA had  revenues of $127.5
million and a net loss of $18.9 million for the year ended December 31, 1996 and
revenues  of $65.5  million  and a net loss of $2.4  million  for the six months
ended June 30, 1997. IHS owns warrants to purchase  approximately 13.5% of CCA's
common  stock,  and Dr.  Robert  N.  Elkins,  Chairman  of the  Board  and Chief
Executive Officer of IHS,  beneficially  owns 21.0% of CCA's outstanding  common
stock  (excluding  the warrants  owned by IHS). In addition,  IHS has guaranteed
certain  obligations  of CCA and made  available to CCA a $10.0  million  credit
facility,  of which $6.0  million was  outstanding  at  September  5, 1997.  See
"Description of Certain IHS Indebtedness - Certain Other Obligations." 


                                       39
<PAGE>


     IHS will pay  approximately  $32.9 million for all the outstanding  capital
stock of CCA, repay approximately $25.6 million of indebtedness to be assumed in
the  Proposed  CCA  Acquisition  and  assume   approximately  $36.4  million  of
indebtedness in the Proposed CCA Acquisition. In addition, on July 28, 1997, IHS
entered  into a letter of intent with  Health and  Retirement  Properties  Trust
("HRPT"),  CCA's principal landlord and a significant lender to CCA, relating to
an  agreement-in-principle  to restructure the lease and loan agreements between
CCA and HRPT if the  transactions  contemplated by the CCA Merger  Agreement are
consummated.  In April 1997 IHS had guaranteed CCA's  obligations to HRPT. Under
the agreement-in-principle, (i) IHS or a nominee will purchase for $33.5 million
14 facilities,  aggregating  1,238 beds,  currently  owned by HRPT and leased to
CCA, (ii) approximately $12.2 million principal amount of loans from HRPT to CCA
will be prepaid and the collateral  security  released,  (iii) three  facilities
mortgage  financed  by HRPT will be sold to HRPT and leased to IHS or a nominee,
(iv) approximately $8.8 million of mortgage indebtedness due HRPT and secured by
nine facilities owned by CCA will be assumed by IHS or a nominee,  (v) leases of
16 facilities operated by CCA will be assumed by IHS or a nominee,  and (vi) the
leases and  mortgages  being  assumed will be modified to reduce future rent and
mortgage  interest rate increases and release cash security  deposits.  IHS will
guarantee all lease and mortgage  obligations to HRPT, which will receive a $3.7
million modification fee. The restructuring of CCA's lease and loan arrangements
with HRPT is subject to the  completion of definitive  documentation,  and there
can be no  assurance  CCA's  lease  and  loan  arrangements  with  HRPT  will be
restructured  on these terms,  on different  terms or at all. IHS intends to use
the proceeds from the sale of the 9 1/4% Senior Notes and  borrowings  under the
Term Facility to pay the purchase price for CCA, repay certain  indebtedness  to
be assumed in the Proposed CCA Acquisition and to make the  approximately  $50.0
million of payments to HRPT.

     IHS has extended the  expiration  date of the offer to 5:00 p.m.,  New York
City time, on Thursday,  September 18, 1997,  unless the tender offer is further
extended.  The  extension  was  made in order to  receive  all of the  necessary
approvals under state change of ownership,  healthcare licensure and certificate
of need laws and regulations  and all other required  consents of third parties,
including  HRPT.  The offer had  previously  been  scheduled  to expire at 12:00
midnight,  New York City time,  on Thursday,  September 4, 1997. At September 4,
1997,  approximately  93.1%  of CCA's  outstanding  common  stock  (representing
approximately 66.4% of CCA's fully-diluted shares) had been validly tendered and
not withdrawn in the offer.

     There  can be no  assurance  that  the  Proposed  CCA  Acquisition  will be
consummated on these terms, on different terms or at all.



FIRST AMERICAN ACQUISITION

     ON OCTOBER 17, 1996, IHS ACQUIRED THROUGH MERGER FIRST AMERICAN HEALTH CARE
OF GEORGIA,  INC., A provider of home health services in 21 states,  principally
Alabama, California, Florida, Georgia, Michigan, Pennsylvania and Tennessee. IHS
believes the  acquisition  of First  American is an  important  component in the
implementation  of its post-acute  care network.  See "Business of IHS - Company
Strategy."

     The  purchase  price for First  American  was  $154.1  million in cash plus
contingent  payments of up to $155  million.  The  contingent  payments  will be
payable if (i)  legislation  is enacted that changes the Medicare  reimbursement
methodology  for  home  health  services  to  a  prospectively  determined  rate
methodology,  in whole or in part, or (ii) in respect of any year the percentage
increase  in the  seasonally  unadjusted  Consumer  Price  Index  for all  Urban
Consumers for the Medical Care expenditure  category (the "Medical CPI") is less
than 8% or,  even if the  Medical  CPI is greater  than 8% in such year,  in any
subsequent year prior to 2004 the percentage increase in the Medical CPI is less
than 8%. If  payable,  the  contingent  payments  will be paid as  follows:  $10
million for 1999, which must be paid on or before February 14, 2000; $40 million
for 2000,  which must be paid on or before  February 14,  2001;  $51 million for
2001,  which must be paid on or before  February 14, 2002; $39 million for 2002,
which must be paid on or before  February  14,  2003;  and $15 million for 2003,
which must be paid on or before  February 14, 2004. IHS has concluded,  based on
its current  expectations  with respect to the Medical CPI, that the  contingent
payments due in 2000 and 2001 are probable of occurrence.  Accordingly,  IHS has
accrued on its balance  sheet a  long-term  liability  representing  the present
value of the $50 million aggregate contin-


                                       40
<PAGE>

gent  payments  due in 2000 and 2001,  which at June 30, 1997  aggregated  $35.3
million.  IHS borrowed  the cash  purchase  price paid at the closing  under its
revolving  credit  facility.  $115 million of the $154.1 million paid at closing
was paid to HCFA, the  Department of Justice and the United States  Attorney for
the Southern  District of Georgia in  settlement  of claims by the United States
government  seeking  repayment from First American of certain  overpayments  and
unallowable  reimbursements under Medicare. The total settlement with the United
States government was $255 million; the remaining $140 million will be paid from
the  contingent  payments to the extent such  payments  become due. In addition,
HCFA and First American agreed to a specified  bi-weekly PIP payment from August
27, 1996 through  December  31,  1996,  without  adjustment  for any  liability,
overpayment or underpayment.

     Substantially  all of First American's  revenues are derived from Medicare.
The following table summarizes  certain selected financial and operating data of
First  American for the three years ended  December 31, 1995 and the nine months
ended September 30, 1995 and 1996. The selected historical financial information
of First American has been derived from, and should be read in conjunction with,
the historical  consolidated  financial statements of First American,  including
the notes thereto,  incorporated by reference  herein.  The results for the nine
months ended  September 30, 1996 are not  necessarily  indicative of the results
achieved for the full fiscal year.



<TABLE>
<CAPTION>
                                                                               NINE MONTHS
                                                                                  ENDED
                                        YEAR ENDED DECEMBER 31,               SEPTEMBER 30,
                                --------------------------------------- -------------------------
                                    1993         1994         1995          1995         1996
                                ------------ ------------ ------------- ------------ ------------
                                ($ IN THOUSANDS)
<S>                             <C>          <C>          <C>           <C>          <C>
Total revenues(1)  ............ $ 340,897    $ 452,163     $  563,747   $ 439,873    $ 370,654
Total expenses  ...............   356,387      496,647        673,658     515,332      402,106
Loss from operations  .........   (15,490)     (44,484)      (109,911)    (75,459)     (31,452)
Net loss  .....................   (15,557)     (55,314)      (110,376)    (75,776)     (36,189)
Visits to patient homes  ...... 5,036,000    7,433,203      9,024,271   6,966,451    5,731,026
Number of States   ............        17           22             23          21           21
Number of service locations ...       288          379            456         426          410
Number of employees (est.)  ...     9,000       12,000         16,000      15,000       13,700
</TABLE>

(1) As a result of the settlement of the HCFA claims,  First  American  recorded
    reductions to patient service revenues of $8.7 million for the period ending
    December 31, 1992,  $11.4  million,  $29.3 million and $54.6 million for the
    years  ended  December  31,  1993,  1994 and 1995,  respectively,  and $41.0
    million and $10.4  million for the nine months ended  September 30, 1995 and
    1996, respectively.


     See  "Risk  Factors  - Risks Related to Historical Financial Performance of
First  American"  and  "Unaudited  Pro  Forma  Financial Information - Pro Forma
Financial  Information  for  the  Combined  Company  and  Other Acquisitions and
Divestitures."


OTHER ACQUISITIONS AND DIVESTITURES


     IHS continues to acquire and lease  additional  geriatric care  facilities,
enter into new management agreements,  acquire  rehabilitation,  home healthcare
and related service  companies and implement its strategy of expanding the range
of related  services it offers  directly  to its  patients in order to serve the
full  spectrum of patients'  post-acute  care needs.  See "Risk  Factors - Risks
Associated  with Growth  Through  Acquisitions  and  Internal  Development"  and
"Unaudited Pro Forma Financial Information."

     From January 1, 1997  through  September  1, 1997,  IHS acquired  nine home
healthcare  companies,  four mobile diagnostic  companies and two rehabilitation
companies.  The  total  cost for  these  acquisitions  was  approximately  $94.1
million.  In July 1997,  IHS sold its  remaining  37%  interest in its  assisted
living services subsidiary,  pursuant to a cash tender offer. IHS will recognize
a gain of  approximately  $4.0  million  during  the third  quarter of 1997 as a
result  of  this  transaction.  In  addition  to the  Merger  and  the  Proposed
Acquisitions,  IHS has also  reached  definitive  agreements  to purchase a home
health company for  approximately  $37.5 million and to lease a skilled  nursing
facility  (including a $4.0 million  purchase option  deposit).  IHS has reached
agreements-in-principle  to purchase a mobile  x-ray  company for  approximately
$200,000,  a home health company for approximately  $4.5 million,  a home health
company for  approximately  $60.0  million,  a respiratory  therapy  company for
approximately $11.1 million and a respiratory therapy company for


                                       41
<PAGE>


approximately  $1.8 million. There can be no assurance that any of these pending
acquisitions  will  be  consummated on the proposed terms, on different terms or
at  all.  See  "Unaudited  Pro Forma Financial Information - Pro Forma Financial
Information for the Combined Company and Other Acquisitions and Divestitures."


     In developing its post-acute healthcare system, IHS continuously  evaluates
whether  owning  and  operating   businesses  which  provide  certain  ancillary
services,  or  contracting  with  third  parties  for  such  services,  is  more
cost-effective.  As a  result,  IHS  is  continuously  evaluating  its  existing
operations to determine whether to retain or divest operations. To date, IHS has
divested its pharmacy and its assisted living services divisions, and may divest
additional divisions or assets in the future. See "Unaudited Pro Forma Financial
Information - Pro Forma Financial Information for the Combined Company and Other
Acquisitions and Divestitures."


REPURCHASE OF 9 5/8%  SENIOR  SUBORDINATED NOTES AND 10 3/4% SENIOR SUBORDINATED
NOTES


     On May  30,  1997,  IHS  completed  cash  tender  offers  to  purchase  its
outstanding  9 5/8% Senior  Subordinated  Notes due 2002,  Series A (the "9 5/8%
Senior Notes") and its 10 3/4% Senior  Subordinated Notes due 2004 (the "10 3/4%
Senior  Notes")  and  related  consent   solicitations   to  eliminate   certain
restrictive  covenants and other provisions in the indentures  pursuant to which
the 9 5/8% Senior Notes and 10 3/4% Senior Notes were issued in order to improve
the operating and financial  flexibility of IHS. The consideration paid pursuant
to the tender  offer and  consent  solicitation  to holders of the 9 5/8% Senior
Notes who tendered their notes (and thereby  delivered  consents to the proposed
amendments  to the  indenture  pursuant  to which the 9 5/8%  Senior  Notes were
issued)  prior to 12:00  midnight,  New York  City  time,  on May 14,  1997 (the
"Consent  Date") was  $1,094.00  plus  accrued  and unpaid  interest  to but not
including the payment date in respect of each $1,000  principal amount tendered,
consisting  of  $1,089.00  plus  accrued  and unpaid  interest  as tender  offer
consideration  and $5.00 as a consent  payment.  The  total  consideration  paid
pursuant to the tender offer and consent  solicitation to holders of the 10 3/4%
Senior Notes who tendered  their notes (and  thereby  delivered  consents to the
proposed  amendments to the indenture pursuant to which the 10 3/4% Senior Notes
were issued)  prior to 12:00  midnight,  New York City time, on the Consent Date
was $1,119.50 plus accrued and unpaid  interest to but not including the payment
date  in  respect  of each  $1,000  principal  amount  tendered,  consisting  of
$1,114.50  plus accrued and unpaid  interest as tender offer  consideration  and
$5.00 as a consent payment.  Of the $115,000,000  aggregate  principal amount of
the 9 5/8% Senior Notes  outstanding,  an aggregate  of  $114,975,000  principal
amount of such  notes was  tendered.  Of the  $100,000,000  aggregate  principal
amount of the 10 3/4% Senior Notes  outstanding,  an  aggregate  of  $99,893,000
principal  amount of such  notes was  tendered.  IHS used  approximately  $247.2
million of the net proceeds from the sale of  $450,000,000  aggregate  principal
amount of 9 1/2% Senior  Subordinated Notes due 2007 to pay the tender offer and
consent solicitation payments and accrued interest.


SALE OF 9 1/2% SENIOR SUBORDINATED NOTES DUE 2007

     On May 30, 1997, IHS sold privately an aggregate of $450 million  principal
amount of its 9 1/2% Senior  Subordinated  Notes due 2007 to Smith Barney,  DLJ,
Morgan Stanley & Co.  Incorporated and Salomon Brothers Inc (the "9 1/2% Initial
Purchasers").  The 9 1/2% Senior  Subordinated Notes were subsequently resold by
the 9 1/2% Initial  Purchasers  pursuant to Rule 144A under the Securities  Act.
IHS  used  approximately  $247.2  million  of the  net  proceeds  to  repurchase
substantially  all its  outstanding 9 5/8% Senior Notes and 10 3/4% Senior Notes
and the remaining  $191.0 million of net proceeds to pay down  borrowings  under
its revolving credit facility.  See "Description of Certain IHS Indebtedness - 9
1/2% Senior Subordinated Notes due 2007."


SALE OF 9 1/4% SENIOR SUBORDINATED NOTES DUE 2008

     On  September  11,  1997,  IHS sold  privately an aggregate of $500 million
principal  amount  of its 9 1/4%  Senior  Subordinated  Notes  due 2008 to Smith
Barney,  Morgan Stanley & Co. Incorporated,  DLJ and Citicorp  Securities,  Inc.
(the "9 1/4% Initial  Purchasers").  The 9 1/4% Senior  Notes were  subsequently
resold  by the 9 1/4%  Initial  Purchasers  pursuant  to  Rule  144A  under  the
Securities Act. IHS used approx- 


                                       42
<PAGE>


imately  $319.5  million of the net  proceeds to repay all  amounts  outstanding
under the Prior Credit Facility. IHS intends to use the remaining  approximately
$166.9 million of net proceeds for general corporate purposes, including working
capital,  and for  potential  acquisitions.  See  "Description  of  Certain  IHS
Indebtedness - 9 1/4% Senior Subordinated Notes due 2008."


                           ROTECH RECENT DEVELOPMENTS


PRELIMINARY YEAR END RESULTS

     Set forth below are RoTech's  preliminary  unaudited  results of operations
for the fiscal year ended July 31, 1997:


                              FISCAL YEAR RESULTS







<TABLE>
<CAPTION>
                                                         %
                              1997         1996       INCREASE
                            ----------   ----------   ---------
                          (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                         <C>          <C>          <C>
Operating revenue  ......   $422,692     $263,030        61%
Net income   ............   $ 30,807     $ 20,556        50%
Earnings per share:
 Primary  ...............   $   1.17     $   0.83        41%
 Fully-diluted  .........   $   1.12     $   0.82        37%
Weighted average shares:
 Primary  ...............     26,352       24,657         7%
 Fully-diluted  .........     30,940       25,206        23%
</TABLE>



     For the year ended July 31, 1997,  approximately  50% of RoTech's  revenues
were derived from  respiratory  products and  services,  approximately  29% were
derived  from  home  medical  equipment,  approximately  14% were  derived  from
pharmacy  products and services and approximately 7% were derived from physician
and other services.  Approximately  51% of RoTech's revenues for the fiscal year
ended July 31, 1997 were derived from Medicare,  approximately  34% were derived
from other  insurance  and private  pay,  approximately  10% were  derived  from
Medicaid and 5% were derived from managed care. 


ACQUISITIONS

     During the fiscal year ended July 31, 1997,  RoTech acquired the net assets
or outstanding stock of 91 home healthcare  companies,  serving 161 locations in
28 states. The total cost for these acquisitions was approximately $142 million.
Subsequent to July 31, 1997, RoTech acquired the net assets or outstanding stock
of 11 home healthcare  companies for  approximately  $13.2 million.  RoTech also
currently  has pending  agreements  in  principle  to purchase the net assets or
outstanding  stock of 10 home  healthcare  companies  for an aggregate  purchase
price of  approximately  $15.8  million.  There can be no assurance  that any of
these  pending  acquisitions  will be  consummated  on the  proposed  terms,  on
different terms or at all. See "Unaudited Pro Forma Financial  Information - Pro
Forma Financial Information for RoTech." 


                                       43
<PAGE>

                             THE SPECIAL MEETINGS


GENERAL

     This Joint Proxy  Statement/Prospectus is being furnished to holders of IHS
Common Stock in connection with the solicitation of proxies by the IHS Board for
use at the IHS  Special  Meeting  to  consider  and vote upon the  approval  and
adoption  of the Merger  Agreement  and to transact  such other  business as may
properly  come before the IHS Special  Meeting,  including any  adjournments  or
postponements thereof.

     This Joint Proxy Statement/Prospectus is also being furnished to holders of
RoTech Common Stock in connection with the solicitation of proxies by the RoTech
Board  for use at the  RoTech  Special  Meeting  to  consider  and vote upon the
approval  and  adoption  of the  Merger  Agreement  and to  transact  such other
business as may properly come before the RoTech Special  Meeting,  including any
adjournments or postponements thereof.

     Each copy of this Joint Proxy Statement/Prospectus mailed to holders of IHS
Common  Stock  is  accompanied  by a form of  proxy  for use at the IHS  Special
Meeting and each copy of this Joint Proxy Statement/Prospectus mailed to holders
of  RoTech  Common  Stock  is  accompanied  by a form of proxy to be used at the
RoTech Special Meeting.


PURPOSE OF THE SPECIAL MEETINGS

     The  purpose  of the  Special  Meetings  is to  consider  and vote upon the
approval and adoption of the Merger Agreement.

     IHS Board.  THE BOARD OF DIRECTORS OF IHS HAS, BY UNANIMOUS VOTE OF THE IHS
BOARD ON JULY 3, 1997,  APPROVED THE MERGER AGREEMENT.  THE IHS BOARD RECOMMENDS
THAT IHS STOCKHOLDERS VOTE FOR APPROVAL AND ADOPTION OF THE MERGER AGREEMENT.

     RoTech  Board.  THE BOARD OF DIRECTORS OF ROTECH HAS, BY UNANIMOUS  VOTE OF
THE ROTECH  BOARD ON JULY 6, 1997,  APPROVED  THE MERGER  AGREEMENT.  THE ROTECH
BOARD RECOMMENDS THAT ROTECH  STOCKHOLDERS VOTE FOR APPROVAL AND ADOPTION OF THE
MERGER AGREEMENT.


DATES, PLACES AND TIMES


     IHS. The IHS Special  Meeting to consider and vote on the Merger  Agreement
will be held on , October , 1997 at 10:00  a.m.,  local time,  at the  executive
offices of IHS, 10065 Red Run Boulevard, Owings Mills, Maryland.

     RoTech.  The  RoTech  Special  Meeting to  consider  and vote on the Merger
Agreement  will be held on ,  October  , 1997 at  10:00  a.m.,  local  time,  at
SunTrust Bank, 200 South Orange Avenue, Orlando, Florida.



RECORD DATES; QUORUMS


     IHS. The IHS Board has fixed the close of business on September 1, 1997, as
the IHS  Record  Date for the  determination  of  holders  of IHS  Common  Stock
entitled to receive notice of and to vote at the IHS Special Meeting. At the IHS
Record Date,  there were  outstanding and entitled to vote 25,657,612  shares of
IHS Common  Stock.  The  presence,  in person or by proxy,  of the  holders of a
majority  of the  issued  and  outstanding  shares  of  IHS  Common  Stock  will
constitute a quorum at the IHS Special Meeting. Abstentions and broker non-votes
will be included in determining whether a quorum is present. In the event that a
quorum is not  present at the IHS  Special  Meeting,  it is  expected  that such
meeting will be adjourned or postponed to solicit additional proxies.


     RoTech.  The RoTech  Board has fixed the close of business on  September 1,
1997, as the RoTech Record Date for the  determination  of the holders of RoTech
Common  Stock  entitled to receive  notice of and to vote at the RoTech  Special
Meeting. At the RoTech Record Date, there were outstanding and 


                                       44
<PAGE>


entitled to vote  26,439,322  shares of RoTech  Common Stock.  The presence,  in
person or by proxy,  of the holders of a majority of the issued and  outstanding
shares of RoTech  Common Stock will  constitute  a quorum at the RoTech  Special
Meeting.  Abstentions  and broker  non-votes  will be  included  in  determining
whether a quorum is  present.  In the event that a quorum is not  present at the
RoTech  Special  Meeting,  it is expected that such meeting will be adjourned or
postponed to solicit additional proxies. 


VOTES REQUIRED

     IHS.  Each share of IHS Common Stock is entitled to one vote on each matter
that comes before the IHS Special Meeting.  Although IHS stockholder approval is
not required under the DGCL, it is required under the rules of the NYSE in order
to maintain  NYSE  listing of the IHS Common  Stock.  Under the NYSE rules,  the
affirmative  vote of the holders of a majority of the outstanding  shares of IHS
Common Stock present or represented  at the IHS Special  Meeting and entitled to
vote is required for approval and adoption of the Merger Agreement. As a result,
broker  non-votes  will be treated as  neither a vote  "for" nor  "against"  the
matter,  although  they will be counted in  determining  if a quorum is present.
However,  abstentions are considered in determining the number of votes required
to attain a majority  of the shares  present or  represented  at the IHS Special
Meeting and entitled to vote. Accordingly, an abstention from voting on a matter
by a stockholder  present in person or  represented  by proxy at the IHS Special
Meeting  has the same legal  effect as a vote  "against"  the matter  because it
represents  a share  present  or  represented  at the IHS  Special  Meeting  and
entitled to vote, thereby increasing the number of affirmative votes required to
approve the matter under  consideration,  but is not  considered an  affirmative
vote for the matter, even though the stockholder or interested parties analyzing
the results of the voting may interpret such a vote differently,  believing that
an abstention  expresses  neither an affirmative nor a negative  position on the
Merger.

     As of the IHS Record  Date,  directors  and  executive  officers of IHS and
their affiliates beneficially owned an aggregate of 488,318 shares of IHS Common
Stock  (excluding  shares  issuable  upon  exercise  of  options),  representing
approximately  1.9% of the shares of IHS Common Stock  outstanding on such date.
The  directors  and  executive   officers  of  IHS  and  their  affiliates  have
unanimously  indicated  their  intentions to vote the shares of IHS Common Stock
beneficially owned by them FOR the Merger Agreement.

     RoTech.  Each share of RoTech  Common Stock is entitled to one vote on each
matter that comes before the RoTech  Special  Meeting.  Approval and adoption of
the Merger  Agreement  requires the affirmative vote of a majority of the issued
and  outstanding  shares of RoTech Common Stock.  As a result,  abstentions  and
broker non-votes will be the equivalents of votes against the Merger Agreement.



     As of the RoTech Record Date,  directors  and executive  officers of RoTech
and their  affiliates  beneficially  owned an aggregate  of 2,040,703  shares of
RoTech  Common  Stock  (excluding  shares  issuable  upon  exercise of options),
representing approximately 7.7% of the shares of RoTech Common Stock outstanding
on such  date.  The  directors  and  executive  officers  of  RoTech  and  their
affiliates  have indicated  their  intention to vote the shares of RoTech Common
Stock beneficially owned by them FOR the Merger Agreement.


     In the event that the Merger  Agreement  is not approved and adopted by the
stockholders  of IHS and  RoTech,  the Merger  Agreement  may be  terminated  in
accordance  with its terms.  See "The Merger  Agreement -  Termination."  If the
Merger is not  consummated,  IHS will continue to pursue  acquisitions to expand
its home  healthcare  operations  and RoTech will  continue  its  operating  and
acquisition strategies as a separate home healthcare company.


VOTING AND REVOCATION OF PROXIES

     Shares of IHS Common Stock or RoTech  Common Stock  represented  by a proxy
properly signed and received at or prior to the relevant Special Meeting, unless
subsequently revoked, will be voted in accordance with the instructions thereon.
Under the applicable  rules of the NYSE,  brokers who hold shares in street name
for customers who are the beneficial  owners of such shares are prohibited  from
giving a proxy to vote such customers' shares with respect to the proposal to


                                       45
<PAGE>

approve and adopt the Merger  Agreement in the absence of specific  instructions
from such customers  ("broker  non-votes").  IF A PROXY IS PROPERLY EXECUTED AND
RETURNED WITHOUT INDICATING ANY VOTING INSTRUCTIONS,  SHARES OF IHS COMMON STOCK
AND SHARES OF ROTECH  COMMON  STOCK  REPRESENTED  BY THE PROXY WILL BE VOTED FOR
APPROVAL  AND  ADOPTION  OF THE  MERGER  AGREEMENT.  ONLY  SHARES  VOTED FOR THE
PROPOSALS  AT THE  RESPECTIVE  MEETINGS OF IHS AND ROTECH  STOCKHOLDERS  WILL BE
COUNTED AS VOTED IN FAVOR IN  DETERMINING  WHETHER  SUCH  PROPOSAL  IS  ADOPTED.
THEREFORE,  ABSTENTIONS AND, IN THE CASE OF THE ROTECH SPECIAL MEETING, FAILURES
TO VOTE AND BROKER NON-VOTES WILL HAVE THE SAME EFFECT AS VOTES AGAINST ADOPTION
OF THE PROPOSAL.  Any proxy given pursuant to the solicitation may be revoked by
the person  giving it at any time  before the proxy is voted by the filing of an
instrument  revoking it or a duly  executed  proxy bearing a later date with the
Secretary of IHS, for IHS  stockholders,  or with the  Secretary of RoTech,  for
RoTech  stockholders,  prior to the vote at the relevant Special Meeting,  or by
voting in person at the appropriate Special Meeting.  Attendance at the relevant
Special  Meeting will not in and of itself  constitute a revocation  of a proxy.
The persons  named as proxies with  respect to the Special  Meetings may propose
and vote for one or more adjournments or postponements of the respective Special
Meetings to permit  further  solicitation  of proxies in favor of the respective
proposals to approve and adopt the Merger Agreement;  provided, however, that no
proxy which is voted against the  respective  proposals to approve and adopt the
Merger Agreement will be voted in favor of any such adjournment or postponement.


     Proxies sent via  facsimile  transmission  will be accepted if received not
later  than 15  minutes  prior to the  scheduled  commencement  of the  relevant
Special  Meeting.  Such proxies may be sent via facsimile to Georgeson & Company
Inc., Attention:  Mr. Keith Haynes, proxy solicitors for IHS, at (212) 440-9009,
and to Corporate Investor  Communications,  Inc., Attention:  Mr. Joe Montesano,
proxy solicitors for RoTech, at (201) 804-8693.



SOLICITATION OF PROXIES


     In addition to solicitation by mail,  directors,  officers and employees of
IHS and RoTech, who will not be specifically  compensated for such services, may
solicit proxies from IHS and RoTech stockholders, respectively, personally or by
telephone  or  telegram  or other forms of  communication.  Except as  otherwise
provided  in the Merger  Agreement,  each party  will bear its own  expenses  in
connection  with the  solicitation of proxies for its Special  Meeting.  IHS has
engaged the firm of  Georgeson & Company  Inc. to assist it in the  distribution
and solicitation of proxies and has agreed to pay Georgeson & Company Inc. a fee
of approximately $8,000, plus expenses, for its services. RoTech has engaged the
firm of Corporate Investor Communications, Inc. to assist it in the distribution
and   solicitation  of  proxies  and  has  agreed  to  pay  Corporate   Investor
Communications,  Inc. a fee of  approximately  $5,000,  plus  expenses,  for its
services. Copies of solicitation materials will be furnished to banks, brokerage
houses,  fiduciaries and custodians  holding in their names shares of IHS Common
Stock or RoTech  Common  Stock  beneficially  owned by others to forward to such
beneficial  owners.  IHS and  RoTech may  reimburse  persons  representing  such
beneficial  owners for the costs of  forwarding  solicitation  materials to such
beneficial  owners.  See "The Merger Agreement - Expenses and Termination Fees."


     HOLDERS OF ROTECH  COMMON  STOCK  SHOULD NOT SEND STOCK  CERTIFICATES  WITH
THEIR PROXY CARDS.  THE  PROCEDURE  FOR THE EXCHANGE OF  CERTIFICATES  AFTER THE
MERGER IS CONSUMMATED IS SET FORTH IN THIS JOINT PROXY STATEMENT/PROSPECTUS. SEE
"THE MERGER AGREEMENT - EXCHANGE OF SHARE CERTIFICATES."

                                       46
<PAGE>

                                   THE MERGER

     The   description   of  the   Merger   contained   in  this   Joint   Proxy
Statement/Prospectus summarizes the material provisions of the Merger Agreement;
it is not  complete  and is qualified in its entirety by reference to the Merger
Agreement,  the  full  text of which  is  attached  hereto  as  Appendix  A. All
stockholders are urged to read Appendix A carefully in its entirety.


TERMS OF THE MERGER

     THE ACQUISITION OF ROTECH BY IHS WILL BE EFFECTED BY MEANS OF THE MERGER OF
MERGER SUB WITH AND INTO  RoTech,  with RoTech being the  surviving  corporation
(the "Surviving Corporation").  The Articles of Incorporation and the By-laws of
Merger Sub in effect at the Effective Time will govern the surviving corporation
until  amended or repealed in  accordance  with  applicable  law.  Following the
Effective  Time,  RoTech shall continue as the Surviving  Corporation  under the
name "RoTech Medical Corporation."

     Upon  consummation of the Merger,  each share of RoTech Common Stock (other
than shares held by RoTech or IHS,  which will be  canceled)  will be  converted
into the right to receive .5806 of a share of IHS Common Stock. For example,  if
a RoTech stockholder owned 100 shares of RoTech Common Stock as of the Effective
Time, that stockholder would receive 58 shares of IHS Common Stock in the Merger
and would  receive cash for the  remaining  .06 of a share of IHS Common  Stock.
Each holder of RoTech  Common Stock  exchanged  pursuant to the Merger who would
otherwise  have been  entitled  to receive a  fraction  of a share of IHS Common
Stock will receive, in lieu thereof,  cash (without interest) in an amount equal
to such  fractional  part of a share of IHS Common Stock  multiplied  by the per
share average  closing price on the NYSE  Composite Tape of IHS Common Stock for
the 30 trading day period ending on the second  trading day prior to the date of
the Effective Time (the "Closing Date").


     Because the Exchange  Ratio of IHS Common Stock for RoTech  Common Stock is
fixed at .5806 and will not  increase or  decrease  due to  fluctuations  in the
market price of either stock,  RoTech  stockholders  will not be compensated for
decreases  in the market  price of IHS Common Stock which could occur before the
Effective  Time. As a result,  in the event the market price of IHS Common Stock
decreases,  the value of the IHS Common  Stock to be  received  in the Merger in
exchange for RoTech Common Stock would  decrease.  In the event the market price
of IHS Common Stock instead  increases,  the value of the IHS Common Stock to be
received in the Merger in exchange for RoTech  Common Stock would  increase.  On
September  , 1997,  the last  trading  day prior to the date of this Joint Proxy
Statement/Prospectus,  the  closing  price of IHS  Common  Stock was $ . At such
price, the Equivalent Value of a share of RoTech Common Stock would be $ and the
aggregate  Merger  consideration  would be  approximately $ (based on 26,439,322
shares of RoTech  Common  Stock  outstanding  on September    ,  1997,  the last
business  day  before the date of this Joint  Proxy  Statement/Prospectus).  The
actual  market  price of the IHS  Common  Stock may  vary,  which  will  cause a
corresponding   change  in  the  Equivalent   Value  and  the  aggregate  Merger
consideration.  Additionally,  the  Equivalent  Value may differ from the actual
market price of RoTech Common Stock. Each stockholder is urged to obtain updated
market  information.  See "Risk  Factors - Possible  Volatility  of Stock Price;
Fixed Exchange Ratio."

     Because  IHS and  RoTech  agreed  to a fixed  Exchange  Ratio,  the  Merger
Agreement contains no condition to closing that IHS or RoTech receive an updated
fairness opinion from their respective financial advisors. The fairness opinions
received  by IHS  and  RoTech  from  their  respective  financial  advisors  are
described  under "-  Opinions of  Financial  Advisors."  However,  either IHS or
RoTech may terminate  the Merger  Agreement if the average of the last per share
sale price of the IHS Common  Stock over the 10 trading days ending on the fifth
trading day prior to the RoTech Special Meeting is equal to or less than $33.00.

     All options to acquire  RoTech  Common Stock which are  outstanding  at the
Effective  Time,  whether or not then vested or  exercisable,  will be converted
into and become rights with respect to IHS Common  Stock,  such that each RoTech
stock option so assumed  shall be  exercisable  for that number of shares of IHS
Common Stock equal to the number of RoTech Shares subject thereto  multiplied by
the  Exchange  Ratio,  and shall have an  exercise  price per share equal to the
RoTech  exercise  price  divided by the Exchange  Ratio.  In addition,  RoTech's
outstanding 5 1/4%  convertible  subordinated  debentures  due 2003 (the "RoTech
Debentures")  in the  aggregate  principal  amount of $110  million and having a
current conversion price of $26.25


                                       47
<PAGE>

per share of RoTech  Common  Stock (38.1 shares per $1,000  principal  amount of
RoTech Debentures) will become convertible into IHS Common Stock at a conversion
price of $45.21 per share (22.12  shares per $1,000  principal  amount of RoTech
Debentures). See "- RoTech Debentures."

     STOCKHOLDERS  ACTUALLY  RECEIVE  THEIR SHARES OF IHS COMMON STOCK AFTER THE
MERGER   IS   COMPLETED.   SEE   "THE  MERGER  AGREEMENT  -  EXCHANGE  OF  SHARE
CERTIFICATES."


BACKGROUND OF THE MERGER

     A key  component  in the  implementation  of IHS'  post-acute  care network
strategy is the expansion of its home  healthcare  services to take advantage of
healthcare  payors'  increasing  focus  on  having  healthcare  provided  in the
lowest-cost  setting  possible and patients'  desires to be treated at home. IHS
believes  that the  nation's  aging  population,  when  combined  with  advanced
technology which allows more healthcare  procedures to be performed at home, has
resulted in an  increasingly  large number of patients  with  long-term  chronic
conditions  that  can  be  treated  effectively  in the  home.  In  addition,  a
significant   number  of  patients   discharged  from  IHS'  MSUs  require  home
healthcare. IHS also believes that it can expand its home healthcare services to
cover  pre-acute,  as well as  post-acute,  patients by having  home  healthcare
nurses  provide  preventive  care services to  home-bound  senior  citizens.  In
addition, IHS believes that home healthcare will help IHS contain costs, thereby
providing  it with a  competitive  advantage  in  contracting  with managed care
companies  and  offering   capitated  rates.  IHS  believes  that  the  changing
healthcare reimbursement environment,  with the focus on cost containment,  will
require healthcare providers to go "at risk" under capitated service agreements,
and that home healthcare  will be a critical  component of its ability to do so.
As a result,  IHS has focused on the acquisition of companies which provide home
healthcare services.

     RoTech has closely studied the rapidly  unfolding managed care environment,
and its  important  role of  supporting  primary  care at home  under the direct
supervision of the patient's  primary care  physician.  In January 1997,  RoTech
engaged  Smith  Barney to assist  RoTech in  evaluating  a possible  transaction
pursuant  to which  RoTech  could form a close  relationship  or combine  with a
compatible  healthcare provider who could join with RoTech in going "at risk" in
delivering  cost-effective  healthcare  superior in patient  and patient  family
appeal.  Because of IHS' depth in the subacute care field, IHS was considered to
be such a potential provider,  and appeared to the RoTech Board to have both the
management and financial strength to accomplish the goal.

     On April 16, 1997, at a meeting  arranged by Smith Barney in New York,  Dr.
Robert  N.  Elkins  and Mr.  Brian  Davidson,  Chairman  of the  Board and Chief
Executive Officer, and Executive Vice  President-Development,  respectively,  of
IHS met with  Stephen P.  Griggs,  President  of  RoTech,  to discuss a possible
business combination.  Messrs. Elkins, Davidson and Griggs reviewed, among other
things, the business strategies of their respective companies and discussed,  on
a preliminary basis, the various  operational and strategic synergies that could
result from a strategic combination.

     On April 23, 1997, Dr. Elkins and Taylor Pickett,  Executive Vice President
- - Acquisitions of IHS, met with William P. Kennedy,  RoTech's Chairman and Chief
Executive  Officer,  Mr. Griggs and  representatives of Smith Barney in Orlando,
Florida  to  discuss  a  possible   transaction  between  IHS  and  RoTech.  The
participants  reviewed the advantages and  disadvantages of a combination of the
two companies.

     At an April 30, 1997, meeting of the IHS Board, the IHS Board reviewed with
senior management IHS' progress and strategy in implementing its post-acute care
network,  during which the IHS Board and senior management  discussed a possible
transaction  with  RoTech.  The IHS  Board  authorized  management  to  continue
discussions with RoTech.

     On May 27,  1997,  Mr.  Pickett met with Mr.  Griggs at RoTech's  executive
offices in Orlando,  Florida.  Messrs.  Pickett  and Griggs  reviewed in detail,
among other things,  the business  strategies of their respective  companies and
discussed the various operational and strategic synergies that could result from
a strategic combination.


                                       48
<PAGE>

     At a May 22, 1997,  meeting of the IHS Board,  the IHS Board  reviewed with
senior  management a proposed  transaction  with RoTech,  including  the various
operational  and strategic  synergies that could result from a transaction  with
RoTech. The IHS Board also discussed potential pricing for the transaction.


     On May 30,  1997,  IHS  proposed  that IHS  acquire  RoTech  in a  tax-free
transaction, with each share of RoTech Common Stock having a value of .5555 of a
share of IHS Common Stock.


     On June 11, 1997, IHS  circulated a first draft of the Merger  Agreement to
RoTech. On June 12, 1997, RoTech signed a confidentiality  agreement relating to
information  to be  supplied  by  IHS,  and on  June  16,  1997,  IHS  signed  a
confidentiality agreement relating to information to be supplied by RoTech.


     On June 16, 1997,  Mr. Griggs met with senior  management at IHS to receive
an overview of IHS' business and to conduct due diligence of IHS.


     On June 17, 1997, IHS personnel  commenced a detailed due diligence  review
of RoTech at RoTech's outside  counsel's  offices in Orlando,  Florida.  Also at
that time,  interviews were conducted with key RoTech management and a review of
pending legal and regulatory matters were conducted.


     At a June 20, 1997,  meeting of the IHS Board,  the IHS Board reviewed with
senior  management  the status of the  negotiations  with RoTech and the initial
results of IHS' due  diligence  examination  of RoTech.  The IHS Board  directed
senior management to continue negotiations with RoTech.


     At a June 23, 1997,  meeting of the RoTech Board, the RoTech Board reviewed
with  senior  management  the status of RoTech's  negotiations  with IHS and the
initial  results of RoTech's due diligence  examination of IHS. The RoTech Board
directed senior management to continue negotiations with IHS.


     From June 26, 1997 to July 2, 1997,  RoTech senior  management and RoTech's
auditors  met with IHS  personnel  at IHS'  executive  offices in Owings  Mills,
Maryland and performed certain due diligence procedures with respect to IHS.


     From June 27, 1997 to July 1, 1997,  management of IHS and RoTech and their
respective legal and financial  advisors held a number of telephone  discussions
to discuss the Merger and negotiate a definitive  merger  agreement.  On July 3,
1997, IHS and RoTech agreed to the Exchange Ratio.



     On  July  3,  1997,   the  IHS  Board  and  its   financial   advisors  met
telephonically  to consider  the  approval of the Merger  Agreement.  IHS senior
management  reviewed  with  the IHS  Board  the  results  of its  due  diligence
examination of RoTech, as well as the proposed terms of the transaction, and DLJ
reviewed  with the IHS Board  certain  financial  analyses  performed  by DLJ in
connection with its determination as to the fairness of the Exchange Ratio, from
a financial  point of view, to the holders of the IHS Common  Stock.  On July 6,
1997, DLJ delivered to the IHS Board its written  opinion to the effect that, as
of such date and based upon and  subject  to the  assumptions,  limitations  and
qualifications set forth therein,  the Exchange Ratio was fair, from a financial
point of view, to the holders of IHS Common Stock.  See "- Opinions of Financial
Advisors - IHS." 


     At a meeting of the RoTech Board held by  telephone on July 6, 1997,  Smith
Barney rendered its oral opinion to the RoTech Board (subsequently  confirmed by
delivery of a written opinion dated July 6, 1997) to the effect that, as of such
date and based upon and subject to certain  matters stated in such opinion,  the
Exchange  Ratio was fair,  from a  financial  point of view,  to the  holders of
RoTech  Common  Stock,  and  reviewed  with the RoTech Board  certain  financial
analyses  performed  by Smith  Barney  in  connection  with  such  opinion.  See
"Opinions of Financial Advisors - RoTech."


     At the same  meeting,  the RoTech Board  determined,  based on  competitive
analyses  conducted  by  independent  compensation  consultants,  that the total
direct  compensation  paid to William P.  Kennedy,  RoTech's  Chairman and Chief
Executive Officer, during the years 1992 through 1997 was below both the average
and median levels of compensation for chief executives in RoTech's industry.  At
such meeting,  the RoTech Board,  in light of RoTech's high level of performance
within its industry  segment  during such period,  granted Mr. Kennedy a special
performance compensation award of $1.0 million, payable in August 1997.


                                       49
<PAGE>

     After  a  full   discussion  of  all  of  the  relevant   issues  and  upon
consideration of the factors described under "- Recommendations of the Boards of
Directors,"  the  Boards  of  Directors  of both  RoTech  and IHS,  having  been
previously  advised by legal counsel as to the material  terms and conditions of
the Merger Agreement and as to such Board's fiduciary duties with respect to the
Merger,  concluded  that  the  Merger  Agreement  was  fair  to and in the  best
interests of their respective  stockholders  and each  unanimously  approved the
Merger Agreement. The definitive Merger Agreement was executed by the parties in
the late evening of July 6, 1997, and publicly announced on Monday morning, July
7, 1997, prior to the opening of the market.


RECOMMENDATIONS OF THE BOARDS OF DIRECTORS

     IHS  Board.  By the  unanimous  vote of the  members  of the IHS Board at a
special meeting held on July 3, 1997, the IHS Board determined that the proposed
Merger,  and the terms and conditions of the Merger Agreement,  were fair to and
in the best interests of IHS and resolved to recommend that the  stockholders of
IHS vote FOR approval and adoption of the Merger Agreement. See "- Background of
the Merger." In reaching its  conclusion to enter into the Merger  Agreement and
recommending  that the stockholders of IHS vote FOR the approval and adoption of
the  Merger  Agreement,  the IHS Board  consulted  with IHS  management  and its
financial and legal  advisors and  considered a number of factors.  The material
factors  considered  by the IHS Board in reaching its  conclusion to approve and
recommend the Merger Agreement are as follows:

        (i) the  presentation and views expressed by IHS management (at the July
   3, 1997 IHS Board  meeting  as well as  numerous  previously  held  meetings)
   regarding (a) IHS' post-acute care network strategy and the implementation of
   such strategy,  (b) the alternatives  available to IHS if it did not pursue a
   transaction with RoTech, (c) the financial condition,  results of operations,
   business and prospects of each of IHS, RoTech and the combined  company,  and
   (d) the recommendation of the Merger by IHS management;

         (ii) the terms and  conditions of the Merger  Agreement,  including the
   Exchange  Ratio of IHS  Common  Stock  for  RoTech  Common  Stock,  which was
   considered  to be  fair  in  light  of  the  financial  condition,  business,
   prospects and  opportunities  of IHS and RoTech and the stock trading history
   of RoTech at the time of determination;

        (iii) the Merger will enhance  implementation  of IHS'  post-acute  care
   network  strategy  by  expanding  significantly  the home  respiratory,  home
   medical  equipment and infusion therapy services which IHS can offer to third
   party payors  directly  rather than through  third party  providers.  The IHS
   Board  noted  that  the  expansion  of the  home  respiratory,  home  medical
   equipment and infusion therapy services it can offer directly will complement
   its extensive home nursing services,  and will allow IHS to offer directly to
   third-party payors the full range of home healthcare  services.  Based on its
   review of the healthcare industry, the IHS Board determined that the combined
   company  that would result from the Merger  would be better  positioned  in a
   rapidly consolidating healthcare industry;

        (iv) the strategic fit between IHS and RoTech, which in IHS' view offers
   the  opportunity  for  synergies  through,  among  other  things,   potential
   joint-marketing  opportunities  for each party and the strength and expertise
   of the combined management of IHS and RoTech;

          (v)  the   long-term   and   short-term   interests  of  IHS  and  its
   stockholders,  as  well  as  the  interests  of  IHS'  employees,  customers,
   creditors and suppliers and community and societal  considerations  including
   those of any  community  in which  any  office  or other  facility  of IHS is
   located;

        (vi) the  belief  that the  combined  company  would be  better  able to
   respond   to  the  needs  of   consumers   and   customers,   the   increased
   competitiveness of the healthcare industry and the opportunities that changes
   in the healthcare industry might bring;

        (vii) the perceived strengths of the combined company, and the belief of
   the directors that RoTech could be integrated without disrupting or adversely
   affecting the existing business operations of IHS or RoTech;


                                       50
<PAGE>

       (viii) the  opinion of the management of IHS that the issuance of the IHS
       Common Stock in the Merger is not believed to be dilutive to earnings;

         (ix) the fact that the  Merger  will  deleverage  IHS'  balance  sheet,
   reducing the percentage of debt (including  current portion)  comprising IHS'
   capitalization  from  approximately  67.7% at June 30, 1997 to  approximately
   58.3%;

         (x) the  financial  analyses  performed by DLJ in  connection  with its
   determination  as to the  fairness of the  Exchange  Ratio,  from a financial
   point of view, to the holders of IHS Common Stock;

         (xi) the  Merger  is  expected  to be treated as a purchase transaction
under GAAP;

        (xii) the  Merger is expected to be treated as a tax-free reorganization
under the Code;

        (xiii) the  regulatory  approvals  required  to  consummate  the Merger,
   including  antitrust  approvals  and  health  regulatory  approvals,  and the
   prospects of receiving such approvals; and

        (xiv) the results of the due  diligence  review of RoTech  conducted  by
   IHS' management and legal and financial advisors.

     In considering the disadvantages of the Merger, the IHS Board addressed the
following material factors:  the risk that IHS would not be able to successfully
integrate  the  business  of RoTech  with that of IHS and thus not  realize  the
expected  synergies,  including the fact that an unsuccessful  integration would
interrupt  its  normal  business  processes;  proposed  reductions  in  Medicare
reimbursement  for  oxygen  used  in home  respiratory  therapy;  the  potential
volatility of the market price for stocks in the  healthcare  industry;  and the
fact that IHS will be  required  to offer to  repurchase  the RoTech  Debentures
immediately following the Merger.

     The IHS Board considered that after the Merger, the current stockholders of
IHS will  continue  to own  approximately  62% and the current  stockholders  of
RoTech will own  approximately  38% of the combined  company  resulting from the
Merger.  The IHS Board also reviewed the size of the  termination fee payable in
the event the Merger Agreement is terminated,  in relation to the size of RoTech
and IHS and the  potential  benefits  of the Merger.  See "The Merger  Agreement
Expenses and Termination  Fees." The IHS Board reviewed the circumstances  under
which  such  fee  would  be  payable  by IHS or  payable  to  IHS,  as  well  as
restrictions on RoTech's ability to solicit  potential  acquirors other than IHS
prior  to  the  closing  of  the  Merger.   See  "The  Merger   Agreement  -  No
Solicitation."

     The foregoing  discussion of the information and factors  considered by the
IHS Board is not intended to be  exhaustive  but  includes all material  factors
considered by the IHS Board.  In view of the wide variety of factors  considered
in connection  with the evaluation of the Merger,  the IHS Board did not attempt
to quantify or otherwise  assign  relative  weights to the  specific  factors it
considered in reaching its  determination,  nor did it determine that any factor
was of particular  importance.  A determination of various  weightings would, in
the view of the IHS Board,  be  impractical.  Rather,  the IHS Board  viewed its
position and  recommendations  as being based on the totality of the information
presented to, and considered by, it. In addition,  individual members of the IHS
Board may have given different weight to different factors.

     RoTech  Board.  The  RoTech  Board  believes  that the terms of the  Merger
Agreement and the transactions  contemplated thereby are fair to and in the best
interests  of RoTech and its  stockholders.  Accordingly,  the RoTech  Board has
unanimously approved the Merger Agreement and recommends approval thereof by the
stockholders  of  RoTech.  In  reaching  its  determination,  the  RoTech  Board
consulted with RoTech management, as well as its legal counsel and its financial
advisors, and considered the following material factors:

        (i) the terms and  conditions  of the Merger  Agreement,  including  the
   Exchange  Ratio of IHS  Common  Stock  for  RoTech  Common  Stock,  which was
   considered  to be  fair  in  light  of  the  financial  condition,  business,
   prospects and  opportunities  of IHS and RoTech and the stock trading history
   of RoTech and IHS at the time of determination;


                                       51
<PAGE>

         (ii)  the  opportunity  to  participate  in  the  consolidation  of the
   healthcare  industry  with a strong  partner  in a  compatible  sector of the
   market, subacute care;

        (iii) the  opportunity  to  preserve  its strength and continuity of key
   personnel  in  local  markets  in  which  RoTech  dominates  or  is  a strong
   participant;

        (iv)   continuing   pressure   from   Medicare  and   Medicaid   payment
   arrangements,  due to federal and state budget pressures subject to political
   control;

          (v) the  compatibility  of  key  management  principles within IHS and
   RoTech, and the support of the Merger by all top management of RoTech;

        (vi) the  developed  operating  systems  within  IHS that  would aid the
   operations of RoTech in increasing  efficiencies  and maintaining  compliance
   with increasing regulatory oversight;

        (vii) the management strengths of IHS;

       (viii)  that a  combination  of  IHS  and  RoTech  would  be  far  better
       positioned  to  consolidate  and  expand a viable  home  health  delivery
       system,  and to negotiate with healthcare payors for proper  compensation
       for such delivery;

        (ix) the  strategic  fit between IHS and RoTech,  which in RoTech's view
   offers the opportunity for synergies through,  among other things,  potential
   joint-marketing  opportunities  for each party and the strength and expertise
   of the combined management of IHS and RoTech;

          (x)  the  long-term  and  short-term   interests  of  RoTech  and  its
   stockholders,  as well as the  interests  of RoTech's  employees,  customers,
   creditors and suppliers and community and societal  considerations  including
   those of communities in which offices of RoTech are located;


        (xi) the opinion of Smith  Barney dated July 6, 1997 to the effect that,
   as of the date of such opinion and based upon and subject to certain  matters
   set forth  therein,  the Exchange Ratio was fair,  from a financial  point of
   view,  to the  holders of RoTech  Common  Stock and that Smith  Barney is not
   required  under the Merger  Agreement to reaffirm its fairness  opinion as of
   any date subsequent to July 6, 1997;


        (xii) the  Merger  is  expected  to be treated as a purchase transaction
under GAAP;

        (xiii) the   Merger   is   expected   to   be   treated  as  a  tax-free
reorganization under the Code;

         (xiv) the  regulatory  approvals  required  to  consummate  the Merger,
   including  antitrust  approvals  and  health  regulatory  approvals,  and the
   prospects of receiving such approvals; and

         (xv) the results of the due  diligence  procedures  with respect to IHS
   conducted by RoTech's management and legal and financial advisors.

     In  considering  the  disadvantages  of the Merger,  the RoTech  Board gave
consideration to the following material factors:  the risk that IHS would not be
able to integrate  successfully  the  businesses of RoTech,  First  American and
other  recent  acquisitions  of IHS with that of IHS;  the fact that the  Merger
Agreement  provided for a fixed  Exchange  Ratio,  thereby  subjecting  RoTech's
stockholders  to the  risk of  volatility  in the  markets  for the  constituent
companies'  securities;  and the historic  marketing and  strategic  differences
between RoTech and IHS.

     The RoTech Board also  considered  the  benefits  that would be realized by
certain members of RoTech management in the event the Merger is consummated. See
"-Additional  Interests of Certain  Persons in the Merger." The RoTech Board did
not consider  any  benefits to such  persons  arising out of ownership of RoTech
Common Stock to be different or in conflict  with those of  unaffiliated  RoTech
stockholders.  Moreover,  the RoTech  Board did not  consider any benefits to be
realized by  management  through new  employment  agreements  or  severance  and
non-competition  agreements  to  be  in  derogation  of  any  benefits  RoTech's
stockholders  might have been able otherwise to obtain, but rather believed that
such arrangements would be beneficial to RoTech's  stockholders by providing for
some  continuity of management  and for a smoother  transition  and  integration
period.


                                       52
<PAGE>

     The RoTech Board also reviewed the size of the  termination  fee payable in
the event the Merger  Agreement is  terminated in relation to the size of RoTech
and IHS. See "The Merger Agreement - Expenses and Termination  Fees." The RoTech
Board reviewed the circumstances  under which such fee would be payable by or to
RoTech,  as well as  restrictions  on  RoTech's  ability  to  solicit  potential
acquirors  other than IHS prior to the  closing of the  Merger.  See "The Merger
Agreement - No Solicitation."

     In view of the wide variety of factors  considered in  connection  with its
evaluation  of the  proposed  Merger,  the  RoTech  Board  did not  quantify  or
otherwise  attempt to assign relative weights to specific factors  considered in
reaching its determination.


OPINIONS OF FINANCIAL ADVISORS

     IHS. IHS engaged DLJ to provide a fairness  opinion in connection  with the
transactions   contemplated   by  the   Merger   Agreement   based   upon  DLJ's
qualifications,  expertise  and  reputation,  as well as DLJ's prior  investment
banking  relationship  and familiarity  with IHS. On July 6, 1997, DLJ delivered
its written  opinion to the IHS Board to the effect that,  as of such date,  and
based upon and subject to the assumptions,  limitations and  qualifications  set
forth in such opinion,  the Exchange Ratio was fair to the holders of IHS Common
Stock from a financial  point of view.  DLJ also  delivered to the IHS Board its
opinion dated the date of this Joint Proxy Statement/Prospectus to substantially
the same effect (the "DLJ Opinion").

     THE FULL TEXT OF THE DLJ  OPINION  DATED AS OF THE DATE OF THIS JOINT PROXY
STATEMENT/PROSPECTUS   IS  SET  FORTH  AS   APPENDIX  B  TO  THIS  JOINT   PROXY
STATEMENT/PROSPECTUS   AND  SHOULD  BE  READ   CAREFULLY  IN  ITS  ENTIRETY  FOR
ASSUMPTIONS MADE,  PROCEDURES  FOLLOWED,  OTHER MATTERS CONSIDERED AND LIMITS OF
THE REVIEW BY DLJ.

     The DLJ  opinions  were  prepared  for the IHS Board and  address  only the
fairness  of the  Exchange  Ratio to the  holders  of IHS  Common  Stock  from a
financial point of view and do not constitute recommendations to any stockholder
of IHS as to how such stockholder should vote at the IHS Special Meeting.  DLJ's
opinions do not  constitute  opinions as to the price at which IHS Common  Stock
will  actually  trade at any  time.  The type and  amount of  consideration  was
determined in arm's length negotiations  between IHS and RoTech. No restrictions
or limitations were imposed upon DLJ with respect to the investigations  made or
procedures followed by DLJ in rendering its opinions.

     In  arriving  at the  DLJ  Opinion,  DLJ  reviewed  the  Merger  Agreement,
including the exhibits thereto,  as well as financial and other information that
was  publicly  available  or  furnished  to  it by  IHS  and  RoTech,  including
information  provided  during  discussions  with their  respective  managements.
Included in the  information  provided  during  discussions  with the respective
managements  were certain  financial  projections for IHS and RoTech prepared by
the  management  of  IHS.  In  addition,  DLJ  compared  certain  financial  and
securities  data of IHS and RoTech with that of various  other  companies  whose
securities are traded in public  markets,  reviewed the historical  stock prices
and trading  volumes of the RoTech Common Stock and IHS Common  Stock,  reviewed
prices and premiums paid in certain other  business  combinations  and conducted
such  other  financial  studies,  analyses  and  investigations  as  DLJ  deemed
appropriate for purposes of rendering its opinions.

     In  rendering  its  opinions,  DLJ relied upon and assumed the accuracy and
completeness of all of the financial and other information that was available to
it from public  sources or that was provided to or discussed  with it by IHS and
RoTech or their respective representatives. DLJ relied upon the estimates of the
management of IHS of the revenue and cost synergies (the "Synergies") achievable
as a result of the  Merger.  DLJ also  assumed  that the  financial  projections
regarding IHS and RoTech  supplied by IHS to DLJ were  reasonably  prepared on a
basis  reflecting  the best currently  available  estimates and judgments of the
management of IHS as to the future  operating and financial  performance  of IHS
and RoTech, respectively.

     The DLJ Opinion is  necessarily  based on economic,  market,  financial and
other  conditions as they exist on, and on information  made available to DLJ as
of, the date  hereof.  DLJ does not have any  obligation  to  update,  revise or
reaffirm the DLJ Opinion.


                                       53
<PAGE>

     The  following  is a summary of the  analyses  presented  by DLJ to the IHS
Board  at its  July 3,  1997  meeting.  All  analyses  discussed  below,  unless
otherwise  indicated,  (i) exclude the  Synergies  estimated by IHS  management,
including  annual cost  savings of $8.0  million,  and (ii) assume the  Exchange
Ratio is  calculated  using an IHS Common  Stock  price of $38.50,  based on the
closing price of the IHS Common Stock on July 1, 1997.


     Common Stock Performance Analysis. DLJ's analysis of the performance of IHS
Common Stock  consisted of an historical  analysis of closing prices and trading
volumes for the period from July 1, 1996 through July 1, 1997.  During this time
period, IHS Common Stock outperformed the S&P 500 and a comparable company index
comprised of Arbor  Health Care  Company,  Beverly  Enterprises,  Inc.,  Genesis
Health Ventures, Inc., Health Care & Retirement Corp., Manor Care, Inc., Mariner
Health Group,  Inc.,  Regency Health Services,  Inc., Sun Healthcare Group, Inc.
and Vencor,  Inc.  During the above  period,  IHS Common Stock reached a high of
$38.75  per share and a low of $20.50 per share.  On July 1, 1997,  the  closing
price of IHS Common Stock was $38.50 per share.


     DLJ's analysis of the  performance  of RoTech Common Stock  consisted of an
historical  analysis of closing  prices and trading  volumes for the period from
July 1, 1996 through July 1, 1997. During this time period,  RoTech Common Stock
underperformed the S&P 500 but outperformed a comparable company index comprised
of nine home healthcare  companies whose securities are publicly traded and that
are deemed by DLJ to be reasonably  comparable to RoTech:  American HomePatient,
Inc., Apria Healthcare Group Inc.,  HealthCor Holdings,  Inc., Home Health Corp.
of America,  Inc.,  Housecall Medical  Resources,  Inc.,  Lincare Holdings Inc.,
Matria Healthcare,  Inc. and Pediatric Services of America, Inc.  (collectively,
the "RoTech Comparable  Companies") and Transworld  HealthCare,  Inc. During the
above  period,  RoTech Common Stock reached a high of $21.75 per share and a low
of $13.63 per share.  On July 1, 1997,  the closing price of RoTech Common Stock
was $18.63 per share.


     DLJ also analyzed the historical relationship between the trading prices of
IHS  Common  Stock and  RoTech  Common  Stock for the  period  from July 1, 1996
through July 1, 1997.  The average  ratio of the closing  price of RoTech Common
Stock to that of IHS Common Stock for the aforementioned  time period was 0.651,
with a minimum ratio of 0.423 and a maximum ratio of 0.897.


     Comparable  Company  Analysis.  To provide  contextual data and comparative
market information, DLJ analyzed the operating performance of RoTech relative to
the  RoTech  Comparable  Companies.  Historical  financial  information  used in
connection  with the ratios provided below with respect to RoTech and the RoTech
Comparable  Companies  is as of the most recent  financial  statements  publicly
available for each company as of July 1, 1997.


     DLJ  performed a valuation  analysis of RoTech by applying  certain  market
trading  statistics for the RoTech Comparable  Companies to RoTech's  historical
and  estimated  financial  results.  DLJ  examined  certain  publicly  available
financial data of the RoTech Comparable  Companies,  including  enterprise value
(defined  as market  value of common  equity  plus book  value of total debt and
preferred  stock  less cash) as a  multiple  of:  (a)  latest 12 months  ("LTM")
revenues,   earnings  before  interest,  taxes,  depreciation  and  amortization
("EBITDA") and earnings before  interest and taxes  ("EBIT");  and (b) estimated
calendar year 1997 revenues, EBITDA and EBIT, and price to earnings ratios based
on: (x) LTM earnings per share  ("EPS");  and (y)  estimated  calendar year 1997
EPS. DLJ noted that as of July 1, 1997,  the RoTech  Comparable  Companies  were
trading at implied  multiples of enterprise value and earnings,  as the case may
be, in (i) a range of 0.3x to 3.2x (with an average,  excluding the high and low
(the "Trimmed  Average"),  of 1.2x) LTM revenues;  (ii) a range of 6.4x to 13.0x
(with a  Trimmed  Average  of 8.6x) LTM  EBITDA;  (iii) a range of 9.9x to 14.9x
(with a Trimmed Average of 12.3x) LTM EBIT; (iv) a range of 12.0x to 21.9x (with
a Trimmed Average of 17.8x) LTM EPS; (v) a range of 0.3x to 2.7x (with a Trimmed
Average of 1.0x) estimated calendar year 1997 revenues;  (vi) a range of 2.7x to
7.8x (with a Trimmed Average of 6.3x) estimated calendar year 1997 EBITDA; (vii)
a range of 6.9x to 11.5x  (with a Trimmed  Average of 9.4x)  estimated  calendar
year 1997 EBIT; and (viii) a range of 10.6x to 18.5x (with a Trimmed  Average of
13.0x) estimated calendar year 1997 EPS. Based on the valuation multiples of the
RoTech  Comparable  Companies  discussed above, DLJ derived a summary  valuation
range for RoTech  Common Stock of $21.00 to $26.00 per share or an implied ratio
of RoTech value per share to IHS value per share ranging from 0.55 to 0.67 based
on IHS'


                                       54
<PAGE>

closing stock price of $38.50 per share on July 1, 1997.  The calendar year 1997
EPS  estimates  for the RoTech  Comparable  Companies  were  based on  estimates
provided by First Call Research  Direct while the calendar  year 1997  estimates
for  revenues,  EBITDA and EBIT were derived from  publicly  available  research
reports.  Revenue,  EBITDA, EBIT and EPS calendar year 1997 estimates for RoTech
were based on estimates provided by IHS.

     No company  utilized in the  comparable  company  analysis is  identical to
RoTech.  Accordingly,  an analysis of the results of the  foregoing  necessarily
involves  complex   considerations  and  judgments  concerning   differences  in
financial and operating  characteristics of the RoTech Comparable  Companies and
RoTech and other  factors  that could  affect  the public  trading  value of the
RoTech  Comparable  Companies.  Mathematical  analysis such as  determining  the
average is not in itself a meaningful method of using comparable company data.

     Comparable   Transaction  Analysis.  DLJ  also  performed  an  analysis  of
selected  merger and acquisition transactions (the "Comparable Transactions") in
the  home  healthcare and broader healthcare industry. Multiples reviewed in the
Comparable  Transactions  consisted  of (i) aggregate transaction value (defined
as  the  equity  value  of the offer plus book value of total debt and preferred
stock  less  cash)  to (where available) LTM revenues, LTM EBITDA, LTM EBIT, and
estimated  current  year  revenues,  estimated current year EBITDA and estimated
current  year  EBIT  as  estimated  at  the  time  of  the  announcement  of the
acquisition,  and  (ii) aggregate purchase price (defined as the equity value of
the  offer)  to  (where available) LTM net income and estimated current year net
income  as  estimated  at  the  time of the announcement of the acquisition. The
Comparable   Transactions  were  comprised  of  the  following  18  transactions
announced  during  the  period  1993  to  1997:  Vivra  Inc.  and  Incentive  AB
(pending);  First  American and IHS; Vitas Healthcare Corp. and Apria Healthcare
Group   Inc.;  Caremark  International,  Inc.  and  MedPartners/Mullikin,  Inc.;
Quantum  Health  Resources,  Inc.  and Olsten Corp.; Rehability Corp. and Living
Centers  of  America,  Inc.;  Continental  Medical  Systems,  Inc.  and  Horizon
Healthcare  Corp.;  Homedco  Group,  Inc.  and Abbey Healthcare Group, Inc.; the
home  infusion  business  of  Caremark  International,  Inc. and Coram; Surgical
Health  Corp.  and  HEALTHSOUTH Corp.; Hillhaven Corp. and Vencor, Inc.; Relife,
Inc.  and  HEALTHSOUTH  Corp.;  Home Nutritional Services, Inc. and W.R. Grace &
Co.;  Critical  Care  America  Inc.  and  Caremark  International,  Inc.;  Rehab
clinics,  Inc.  and  NovaCare,  Inc.;  Total Pharmaceutical Care, Inc. and Abbey
Healthcare  Group,  Inc.;  Lifetime  Corp.  and Olsten Corp.; and Home Intensive
Care,  Inc.  and  W.R.  Grace  &  Co.  DLJ  noted  that the implied multiples of
aggregate  transaction  value  and aggregate purchase price, as the case may be,
for  these  transactions  were  in  (i)  a range of 0.5x to 3.7x (with a Trimmed
Average  of  1.3x)  LTM  revenues; (ii) a range of 7.6x to 23.3x (with a Trimmed
Average  of  12.5x)  LTM EBITDA; (iii) a range of 10.4x to 34.7x (with a Trimmed
Average  of  18.5x)  LTM  EBIT;  (iv)  a range of 20.3x to 39.6x (with a Trimmed
Average  of  25.4x) LTM net income; (v) a range of 0.7x to 2.2x (with an average
of  1.3x)  estimated  current year revenues; (vi) a range of 6.9x to 12.9x (with
an  average  of  9.5x)  estimated  current year EBITDA; (vii) a range of 9.9x to
15.2x  (with  an  average  of  13.1x)  estimated current year EBIT; and (viii) a
range  of  18.6x  to 23.8x (with an average of 21.6x) estimated current year net
income.  Based  on  the  multiples paid in the Comparable Transactions discussed
above,  DLJ  derived a summary valuation range for RoTech Common Stock of $20.00
to  $28.00  per share or an implied ratio of RoTech value per share to IHS value
per  share of 0.52 to 0.73 based on IHS' closing stock price of $38.50 per share
on  July  1,  1997.  The current year estimates of financial performance for the
Comparable  Transactions  used  to  derive  the  multiples  above  were based on
publicly  available  research  reports available at the time of the announcement
of  each  transaction. Revenue, EBITDA, EBIT and net income estimates for RoTech
were based on estimates provided by IHS.

     No transaction utilized in the comparable transaction analysis is identical
to the  Merger.  Accordingly,  an  analysis  of  the  results  of the  foregoing
necessarily involves complex considerations and judgments concerning differences
in financial  and  operating  characteristics  of RoTech and other  factors that
could  affect  the  acquisition  value  of the  companies  to  which it is being
compared. Mathematical analysis such as determining the average is not in itself
a meaningful method of using comparable transaction data.

     Premium Analysis.  DLJ derived an acquisition valuation for RoTech based on
premiums  offered  in merger  and  acquisition  transactions  ranging  from $250
million to $1.0 billion in size and announced  between  January 1, 1994 and July
1, 1997. DLJ's analysis indicated that for the transactions reviewed,


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<PAGE>

the average  premiums  offered to the market price of the  acquired  company one
day, one week and one month prior to announcement  were: 30.2%, 36.1% and 43.9%,
respectively, for stock transactions,  37.1%, 44.0% and 53.0%, respectively, for
cash  transactions,   and  33.8%,  40.4%  and  48.9%,   respectively,   for  all
transactions.  Applying the above  premiums to RoTech's  closing stock price one
day,  one week and one  month  prior to July 1,  1997,  implies  an  acquisition
valuation  range of  approximately  $24.00  to  $27.00  per  RoTech  share or an
acquisition  exchange  ratio range of 0.62 to 0.70 based on IHS'  closing  stock
price of $38.50 on July 1, 1997.

     Discounted Cash Flow Analysis. In addition, DLJ performed a discounted cash
flow analysis for the  five-year  period  commencing  January 1, 1997 and ending
December 31, 2001 based on the stand-alone  unlevered free cash flows of RoTech,
without giving effect to the Synergies but including IHS' assessment of RoTech's
program of acquiring other home healthcare companies.  Unlevered free cash flows
were calculated as the after-tax operating earnings of RoTech, plus depreciation
and  amortization  and other  non-cash  items,  plus (or minus)  net  changes in
working capital,  minus projected capital expenditures.  DLJ calculated terminal
values by applying a range of estimated  EBITDA multiples of 7.0x to 8.0x to the
projected  EBITDA of RoTech in 2001.  The unlevered free cash flows and terminal
values were then  discounted to the present  using a range of discount  rates of
11.0% to 13.0%  representing an estimated range of the weighted  average cost of
capital of RoTech.  Based on this  analysis,  DLJ  calculated  per share  equity
values of RoTech  ranging  from $26.00 to $32.00 and ratios of RoTech  value per
share to IHS value per share  ranging  from 0.68 to 0.83  based on IHS'  closing
stock price of $38.50 per share on July 1, 1997.


     EPS  Impact  Analysis.  DLJ also  analyzed  the pro  forma  effects  on the
projected EPS of IHS resulting from the Merger,  including,  without independent
verification,  the Synergies projected by the management of IHS, for each of the
years ending December 31, 1997, 1998 and 1999,  assuming exchange ratios of 0.55
and 0.60.  The  analysis  for the fiscal year ending  December  31, 1997 was pro
forma assuming the Merger  occurred on January 1, 1997.  This analysis was based
on a number of assumptions, including, among other things, estimated amounts and
timing of the  Synergies  and the  projected  financial  performance  of IHS and
RoTech.  The analysis  indicated  that the Merger,  accounted  for as a purchase
transaction,   with  the  benefit  of  the  Synergies,   is  anticipated  to  be
accretive/(dilutive)  to IHS'  stand-alone EPS estimates by 4.6%, 2.4%, and 5.7%
assuming an exchange ratio of 0.55 or 0.5%, (1.3)% and 2.1% assuming an exchange
ratio of 0.60 for the years ending December 1997, 1998, and 1999,  respectively.


     Relative Contribution  Analysis. DLJ analyzed the relative contributions of
IHS and  RoTech to the  revenues,  EBITDA,  EBIT and net income of the pro forma
combined  entity  for the  projected  calendar  years  1997 and 1998,  excluding
Synergies  and  transaction  adjustments.   Based  on  the  projected  financial
information for the calendar year 1997, RoTech's revenues,  EBITDA, EBIT and net
income would represent 21.0%, 32.8%, 29.8% and 36.5%,  respectively,  of the pro
forma combined  entity,  assuming the  transaction  occurred at January 1, 1997.
Based  on the  projected  financial  information  for the  calendar  year  1998,
RoTech's  revenues,  EBITDA,  EBIT and net income would represent 24.4%,  31.0%,
28.1% and 32.0%,  respectively,  of the pro forma combined entity. The shares of
IHS Common  Stock to be issued to the holders of RoTech  Common Stock on a fully
diluted basis would represent  approximately  30.0% of the outstanding shares of
IHS Common Stock after giving effect to the Merger at an exchange  ratio of 0.55
or 32.0% at an exchange ratio of 0.60.

     The summary  set forth above does not purport to be a complete  description
of the analyses performed by DLJ, but describes,  in summary form, the principal
elements of the analyses contained in the materials  presented by DLJ to the IHS
Board in  connection  with DLJ  rendering its  opinions.  The  preparation  of a
fairness opinion involves various  determinations as to the most appropriate and
relevant  methods of financial  analysis and the application of these methods to
the  particular  circumstances  and,  therefore,  such an opinion is not readily
susceptible to summary  description.  Each of the analyses  conducted by DLJ was
carried out in order to provide a different  perspective on the  transaction and
add to the total mix of information available.  DLJ did not form a conclusion as
to whether any individual analysis, considered in isolation, supported or failed
to support an opinion as to fairness from a financial point of view.  Rather, in
reaching its conclusion,  DLJ considered the results of the analyses in light of
each  other and  ultimately  reached  its  opinion  based on the  results of the
analyses taken as a whole.  DLJ did not place  particular  reliance or weight on
any  individual  factor,  but instead  concluded  that its analyses,  taken as a
whole, sup-


                                       56
<PAGE>

ported its  determination.  Accordingly,  notwithstanding  the separate  factors
summarized  above,  DLJ believes that its analyses must be considered as a whole
and that  selecting  portions of its analyses and the factors  considered by it,
without  considering  all analyses and factors,  could create an  incomplete  or
misleading view of the evaluation process underlying its opinion.  In performing
its  analyses,   DLJ  made  numerous   assumptions   with  respect  to  industry
performance,  business and economic conditions and other matters,  including the
continuing  shift in the U.S.  private  healthcare  system  toward  managed care
plans, the ongoing consolidation trend in the home healthcare industry,  and the
absence of any material change in the competitive  environment in the healthcare
industry or U.S. economic conditions,  generally.  The analyses performed by DLJ
are not necessarily  indicative of actual values or future results, which may be
significantly more or less favorable than suggested by such analyses.


     DLJ was selected to render an opinion in  connection  with the Merger based
upon DLJ's  qualifications,  expertise and  reputation,  including the fact that
DLJ, as part of its investment  banking  business,  is regularly  engaged in the
valuation of businesses  and their  securities  in  connection  with mergers and
acquisitions,  underwritings,  sales and  distributions  of listed and  unlisted
securities, private placements and valuations for corporate and other purposes.



     Pursuant to a letter agreement  between IHS and DLJ dated July 2, 1997 (the
"DLJ  Engagement  Letter"),  DLJ is entitled  to (i) a retainer  fee of $250,000
payable  promptly upon  execution of the DLJ  Engagement  Letter,  (ii) a fee of
$700,000 payable at the time DLJ notified IHS that it was prepared to deliver an
opinion  with  respect to the Merger,  irrespective  of the  conclusion  reached
therein, and (iii) a fee of $50,000 for each update of a prior opinion delivered
by DLJ at IHS'  request.  In addition,  IHS has agreed to reimburse  DLJ for all
out-of-pocket  expenses  (including  the  reasonable  fees and  expenses  of its
counsel) incurred by DLJ in connection with its engagement  thereunder,  whether
or not the Merger is consummated,  and to indemnify DLJ for certain  liabilities
and  expenses  arising  out of the  Merger  or the  transactions  in  connection
therewith, including liabilities under federal securities laws. The terms of the
fee  arrangement   with  DLJ,  which  DLJ  and  IHS  believe  are  customary  in
transactions of this nature, were negotiated at arm's length between IHS and DLJ
and the IHS Board was aware of such arrangement.



     DLJ provides a full range of financial, advisory and brokerage services and
in the  course of its normal  trading  activities  may from time to time  effect
transactions  and hold  positions in the securities or options on the securities
of RoTech and/or IHS for its own account and for the accounts of customers. Over
the past two years,  DLJ has  co-managed a $500 million high yield  offering for
IHS, a $450  million  high yield  offering  for IHS, a $150  million  high yield
offering for IHS and a $33.6  million  initial  public  offering for IHS' former
subsidiary,  Integrated Living  Communities,  Inc., for all of which it received
usual and customary compensation. 


     RoTech. Smith Barney was retained by RoTech to act as its financial advisor
in connection  with the proposed  Merger.  In connection  with such  engagement,
RoTech requested that Smith Barney evaluate the fairness, from a financial point
of view,  to the  holders  of RoTech  Common  Stock of the  consideration  to be
received  by such  holders in the Merger.  On July 6, 1997,  at a meeting of the
RoTech Board held to evaluate the proposed Merger, Smith Barney delivered to the
RoTech  Board an oral  opinion  (which  opinion was  subsequently  confirmed  by
delivery of a written  opinion dated July 6, 1997) to the effect that, as of the
date of such  opinion  and based  upon and  subject to  certain  matters  stated
therein,  the Exchange  Ratio was fair,  from a financial  point of view, to the
holders of RoTech Common Stock.


     In arriving at its opinion,  Smith Barney reviewed the Merger Agreement and
held   discussions   with  certain   senior   officers,   directors   and  other
representatives  and  advisors of RoTech and certain  senior  officers and other
representatives  and advisors of IHS concerning the  businesses,  operations and
prospects of RoTech and IHS. Smith Barney examined  certain  publicly  available
business and financial information relating to RoTech and IHS as well as certain
financial forecasts and other information and data for RoTech and IHS which were
provided  to  or  otherwise  discussed  with  Smith  Barney  by  the  respective
managements  of  RoTech  and IHS,  including  information  relating  to  certain
strategic  implications and operational  benefits anticipated to result from the
Merger.  Smith Barney reviewed the financial terms of the Merger as set forth in
the Merger Agreement in relation to, among other things:  current and historical
market prices and trading volumes of RoTech Common Stock and IHS Common Stock;


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<PAGE>

the  historical  and projected  earnings and other  operating data of RoTech and
IHS; and the  capitalization  and financial  condition of RoTech and IHS.  Smith
Barney also considered, to the extent publicly available, the financial terms of
certain  other  similar  transactions   recently  effected  which  Smith  Barney
considered  relevant in evaluating  the Merger and analyzed  certain  financial,
stock market and other publicly available information relating to the businesses
of  other  companies  whose  operations  Smith  Barney  considered  relevant  in
evaluating  those of RoTech and IHS. In connection  with its  engagement,  Smith
Barney was requested to approach,  and held  discussions  with, third parties to
solicit  indications  of interest  in a possible  acquisition  of RoTech.  Smith
Barney also evaluated the potential pro forma financial  impact of the Merger on
IHS. In addition to the  foregoing,  Smith Barney  conducted such other analyses
and  examinations  and  considered  such other  financial,  economic  and market
criteria as Smith Barney deemed  appropriate  in arriving at its opinion.  Smith
Barney noted that its opinion was necessarily based upon information  available,
and financial,  stock market and other conditions and circumstances existing and
disclosed, to Smith Barney as of the date of its opinion.


     In  rendering  its  opinion,  Smith  Barney  assumed  and  relied,  without
independent  verification,  upon the accuracy and  completeness of all financial
and other  information and data publicly  available or furnished to or otherwise
reviewed by or discussed with Smith Barney.  With respect to financial forecasts
and other information and data provided to or otherwise reviewed by or discussed
with Smith Barney,  the  managements of RoTech and IHS advised Smith Barney that
such forecasts and other information and data were reasonably  prepared on bases
reflecting  the  best  currently   available  estimates  and  judgments  of  the
respective  managements of RoTech and IHS as to the future financial performance
of  RoTech  and IHS and the  strategic  implications  and  operational  benefits
anticipated to result from the Merger. Smith Barney assumed, with the consent of
the RoTech Board,  that the Merger will be treated as a tax-free  reorganization
for  federal  income tax  purposes.  The opinion of Smith  Barney,  as set forth
therein,  relates to the relative values of RoTech and IHS. Smith Barney did not
express any opinion as to what the value of the IHS Common Stock  actually  will
be when  issued to RoTech  stockholders  pursuant  to the Merger or the price at
which the IHS Common Stock will trade subsequent to the Merger. Smith Barney did
not make and was not provided with an independent evaluation or appraisal of the
assets or  liabilities  (contingent or otherwise) of RoTech or IHS nor did Smith
Barney make any physical  inspection  of the  properties  or assets of RoTech or
IHS.  Although Smith Barney  evaluated the Exchange Ratio from a financial point
of view,  Smith  Barney  was not  asked to and did not  recommend  the  specific
consideration  payable in the Merger,  which was determined through  negotiation
between  RoTech and IHS. No other  limitations  were  imposed by RoTech on Smith
Barney with respect to the investigations  made or procedures  followed by Smith
Barney in rendering its opinion.


     THE FULL TEXT OF THE WRITTEN  OPINION OF SMITH  BARNEY  DATED JULY 6, 1997,
WHICH SETS FORTH THE ASSUMPTIONS MADE, MATTERS CONSIDERED AND LIMITATIONS ON THE
REVIEW UNDERTAKEN,  IS ATTACHED HERETO AS APPENDIX C AND IS INCORPORATED  HEREIN
BY  REFERENCE.  HOLDERS OF ROTECH  COMMON  STOCK ARE URGED TO READ THIS  OPINION
CAREFULLY IN ITS ENTIRETY. THE OPINION OF SMITH BARNEY IS DIRECTED TO THE ROTECH
BOARD AND RELATES ONLY TO THE  FAIRNESS OF THE  EXCHANGE  RATIO FROM A FINANCIAL
POINT OF VIEW,  DOES NOT  ADDRESS  ANY  OTHER  ASPECT OF THE  MERGER OR  RELATED
TRANSACTIONS AND DOES NOT CONSTITUTE A  RECOMMENDATION  TO ANY STOCKHOLDER AS TO
HOW SUCH STOCKHOLDER  SHOULD VOTE AT THE ROTECH SPECIAL MEETING.  THE SUMMARY OF
THE OPINION OF SMITH  BARNEY SET FORTH IN THIS JOINT PROXY  STATEMENT/PROSPECTUS
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE FULL TEXT OF SUCH OPINION.

     In preparing its opinion, Smith Barney performed a variety of financial and
comparative  analyses,  including  those  described  below.  The summary of such
analyses  does  not  purport  to  be a  complete  description  of  the  analyses
underlying  Smith Barney's  opinion.  The preparation of a fairness opinion is a
complex  analytic  process  involving  various  determinations  as to  the  most
appropriate  and relevant  methods of financial  analyses and the application of
those methods to the particular circumstances and, therefore, such an opinion is
not  readily  susceptible  to summary  description.  Accordingly,  Smith  Barney
believes  that its analyses  must be  considered  as a whole and that  selecting
portions of its  analyses  and  factors,  without  considering  all analyses and
factors,  could  create  a  misleading  or  incomplete  view  of  the  processes
underlying  such  analyses  and  opinion.  In its  analyses,  Smith  Barney made
numerous assumptions with respect to RoTech, IHS, industry performance,  general
business,  economic,  market and financial conditions and other matters, many of
which are beyond the control of RoTech and IHS. The estimates  contained in such
analyses and the


                                       58
<PAGE>

valuation  ranges  resulting  from any particular  analysis are not  necessarily
indicative of actual values or predictive of future results or values, which may
be  significantly  more or less favorable than those suggested by such analyses.
In addition,  analyses  relating to the value of businesses or securities do not
purport  to be  appraisals  or to  reflect  the  prices at which  businesses  or
securities  actually may be sold.  Accordingly,  such analyses and estimates are
inherently  subject to  substantial  uncertainty.  Smith  Barney's  opinion  and
analyses  were only one of many  factors  considered  by the RoTech Board in its
evaluation of the Merger and should not be viewed as  determinative of the views
of the RoTech Board or management  of RoTech with respect to the Exchange  Ratio
or the proposed Merger.


     Selected Company  Analysis.  Using publicly  available  information,  Smith
Barney analyzed,  among other things, the market values and trading multiples of
RoTech  and five  selected  publicly  traded  companies  in the home  healthcare
industry,  consisting of: American  Homepatient,  Inc.;  Apria  Healthcare Group
Inc.; Lincare Holdings Inc.; Pediatric Services of America, Inc.; and Transworld
Healthcare, Inc. (collectively, the "Selected Companies"). Smith Barney compared
market values as multiples of, among other things, estimated calendar years 1997
and 1998 net income,  and adjusted  market values (fully  diluted  market value,
plus total debt  outstanding,  less cash) as multiples  of, among other  things,
latest 12 months and latest quarter annualized earnings before interest,  taxes,
depreciation and amortization ("EBITDA").  Net income multiples for the Selected
Companies were based on estimates of selected  investment  banking firms and net
income  multiples  for  RoTech  were  based both on  internal  estimates  of the
management of RoTech and estimates of selected  investment  banking  firms.  All
multiples  were based on  closing  stock  prices as of July 2, 1997.  Applying a
range of multiples for the Selected  Companies of estimated  calendar years 1997
and 1998 net income and latest 12 months and latest quarter annualized EBITDA of
10.8x to 18.6x,  10.1x to 17.1x, 6.4x to 12.7x and 4.9x to 11.3x,  respectively,
to corresponding financial data for RoTech resulted in an equity reference range
for  RoTech of  approximately  $14.46 to $30.04 per share,  as  compared  to the
equity  value  implied  by the  Exchange  Ratio of $22.50  per share  based on a
closing stock price of IHS Common Stock on July 2, 1997.

     Using publicly available information, Smith Barney also analyzed the market
values and trading multiples of IHS and 21 selected publicly traded companies in
the long-term  care industry,  consisting  of:  Advocat Inc.;  Arbor Health Care
Company;   Beverly  Enterprises,   Inc.;   Community  Care  of  America,   Inc.;
Extendicare,  Inc.; Genesis Health Ventures,  Inc.; GranCare,  Inc.;  Harborside
Healthcare  Corporation;  Health  Care  &  Retirement  Corporation;  Horizon/CMS
Healthcare  Corporation;  Living  Centers of America,  Inc.;  Manor Care,  Inc.;
Mariner Health Group, Inc.; The Multicare  Companies Inc.;  National  HealthCare
L.P.; Regency Health Services,  Inc.;  Retirement Care Associates,  Inc.; Summit
Care  Corporation;  Sun Healthcare  Group,  Inc.;  Unison  Healthcare Group; and
Vencor,  Inc.  (collectively,  the  "Long-Term  Care  Companies").  Smith Barney
compared  market values as multiples of estimated  calendar years 1996, 1997 and
1998 net income, and adjusted market values as multiples of latest 12 months and
latest quarter  annualized  net revenue,  EBITDA and earnings  before  interest,
taxes, depreciation, amortization and rent ("EBITDAR"). Net income multiples for
the  Long-Term  Care  Companies  were based on estimates of selected  investment
banking  firms and net income  multiples  for IHS were  based  both on  internal
estimates of the management of IHS and estimates of selected  investment banking
firms.  All multiples were based on closing stock prices as of July 2, 1997. The
ranges of multiples of estimated  calendar years 1996,  1997 and 1998 net income
and latest 12 months and  latest  quarter  annualized  net  revenue,  EBITDA and
EBITDAR of the Long-Term Care Companies were as follows:  (i) estimated calendar
years 1996, 1997 and 1998 net income: 10.2x to 27.0x, 10.4x to 22.6x and 9.6x to
19.1x,  respectively;  (ii) latest 12 months and latest  quarter  annualized net
revenue: 0.3x to 2.3x and 0.3x to 2.2x, respectively; (iii) latest 12 months and
latest quarter annualized EBITDA: 5.7x to 14.2x and 3.9x to 13.1x, respectively;
and (iv) latest 12 months and latest quarter annualized  EBITDAR:  3.3x to 16.4x
and 3.4x to 12.8x, respectively. The multiples of estimated calendar years 1996,
1997, 1998, latest 12 months and latest quarter  annualized net revenue,  EBITDA
and EBITDAR of IHS were 17.6x,  15.1x, 12.9x, 1.1x, 1.2x, 11.2x, 8.1x, 10.2x and
7.8x, respectively.


     Selected  Merger  and  Acquisition  Transactions  Analysis.  Using publicly
available  information,  Smith  Barney  analyzed  the purchase price and implied
transaction  value  multiples  paid  or  proposed  to  be  paid  in  10 selected
transactions   in   the   home   healthcare  services  industry,  consisting  of
(acquiror/target):  IHS/Coram  Healthcare  Corporation;  Apria  Healthcare Group
Inc./Vitas Healthcare Corporation; The


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<PAGE>

Olsten  Corporation/Quantum  Health  Resources,  Inc.;  Homedco Group Inc./Abbey
Healthcare  Group,  Inc.;  Coram Healthcare  Corporation/Caremark  Home Infusion
Units; W.R. Grace & Co./Home Nutritional Services,  Inc.; Caremark International
Inc./Critical Care America,  Inc.; Abbey Healthcare Group/ Total  Pharmaceutical
Care; The Olsten  Corporation/Lifetime  Corporation;  and W.R. Grace & Co./ Home
Intensive Care, Inc. (collectively,  the "Selected Transactions").  Smith Barney
compared  purchase prices as multiples of, among other things,  latest 12 months
net income  and  implied  transaction  values as  multiples  of latest 12 months
revenues,  EBITDA and earnings before interest and taxes ("EBIT"). All multiples
for the Selected Transactions were based on information available at the time of
announcement  of the  transaction.  Applying  a range  of  multiples  (excluding
outliers)  for the  Selected  Transactions  of  latest  12  months  net  income,
revenues,  EBITDA and EBIT of 19.2x to 32.7x,  0.57x to 1.55x, 7.1x to 15.6x and
10.9x to 24.7x,  respectively,  and an equity control  premium of 25% to 40%, to
corresponding  financial data for RoTech  resulted in an equity  reference range
for  RoTech of  approximately  $14.97 to $33.91 per share,  as  compared  to the
equity  value  implied by the  Exchange  Ratio of $22.50 per share  based on the
closing stock price of IHS Common Stock on July 2, 1997.

     No company, transaction or business used in the "Selected Company Analysis"
or "Selected  Merger and Acquisition  Transactions  Analysis" as a comparison is
identical to RoTech, IHS or the Merger.  Accordingly, an analysis of the results
of the  foregoing  is not entirely  mathematical;  rather,  it involves  complex
considerations and judgments  concerning  differences in financial and operating
characteristics  and other  factors  that could affect the  acquisition,  public
trading or other values of the Selected Companies,  Selected Transactions or the
business segment, company or transaction to which they are being compared.

     Discounted  Cash Flow Analysis.  Smith Barney  performed a discounted  cash
flow  analysis of the  projected  free cash flow of RoTech for the fiscal  years
1998 through 2001, based on internal  estimates of the management of RoTech. The
stand-alone discounted cash flow analysis of RoTech was determined by (i) adding
(x) the present  value of projected  free cash flows over the  four-year  period
from 1998 to 2001 and (y) the present value of RoTech's estimated terminal value
in year 2001 and (ii)  subtracting the current net debt of RoTech.  The range of
estimated  terminal  values  for RoTech at the end of the  four-year  period was
calculated by applying  terminal  value  multiples  ranging from 7.0x to 9.0x to
RoTech's projected 2001 EBITDA, representing RoTech's estimated value beyond the
year 2001.  The cash flows and  terminal  values of RoTech  were  discounted  to
present value using discount rates ranging from 12.5% to 17.5%,  with particular
focus on a discount rate of 15%.  Utilizing such terminal  values and a discount
rate of 15%, this analysis  resulted in an equity  reference range for RoTech of
approximately  $15.94 to $27.04  per share,  as  compared  to the  equity  value
implied by the  Exchange  Ratio of $22.50 per share based on the  closing  stock
price of IHS Common Stock on July 2, 1997.

     Debt  Capacity  Analysis.  Smith Barney  performed an analysis  designed to
determine  the price that could be paid by a  financial  investor  to complete a
leveraged  buyout  (an  "LBO")  of  RoTech,  based on  RoTech's  latest  quarter
annualized  EBITDA. For purposes of such analysis,  Smith Barney assumed,  among
other things,  that the transaction  could be financed using a capital structure
consisting  of  40.0%  bank  debt  at an  assumed  interest  rate of  7.5%,  30%
subordinated  debt at an assumed  interest rate of 10.5%,  and 30% equity.  This
analysis  resulted  in an equity  reference  range for  RoTech of  approximately
$18.14 to $22.90 per share,  as  compared  to the  equity  value  implied by the
Exchange  Ratio of $22.50  per share  based on the  closing  stock  price of IHS
Common Stock on July 2, 1997.

     Contribution Analysis.  Smith Barney analyzed the respective  contributions
of RoTech and IHS to the estimated revenue,  EBITDA,  EBIT and net income of the
combined  company  for the  latest 12 months and  calendar  years 1997 and 1998,
assuming certain cost savings and other potential  synergies  anticipated by the
managements  of RoTech and IHS to result  from the Merger  were  achieved.  This
analysis  indicated  that  (i) for the  latest  12  months,  RoTech  would  have
contributed  approximately 21.3% of revenue,  31.2% of EBITDA, 25.8% of EBIT and
30.5% of net  income,  and IHS would  have  contributed  approximately  78.7% of
revenue, 68.8% of EBITDA, 74.2% of EBIT and 69.5% of net income, of the combined
company; (ii) in calendar year 1997, RoTech would contribute approximately 19.7%
of  revenue,  30.6% of EBITDA,  25.4% of EBIT and 31.8% of net  income,  and IHS
would contribute  approximately 80.3% of revenue, 69.4% of EBITDA, 74.6% of EBIT
and 68.2% of net income,  of the combined  company;  and (iii) in calendar  year
1998, RoTech would contribute approxi-


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<PAGE>

mately 23.3% of revenue, 34.1% of EBITDA, 28.7% of EBIT and 35.1% of net income,
and IHS would contribute  approximately 76.7% of revenue, 65.9% of EBITDA, 71.3%
of EBIT and 64.9% of net income, of the combined company.  Based on the Exchange
Ratio,  current stockholders of RoTech and IHS would own approximately 31.2% and
68.8%,  respectively,   of  the  equity  value  of  the  combined  company  upon
consummation of the Merger,  and RoTech and IHS would  constitute  approximately
26.7% and 73.3%, respectively, of the enterprise value of the combined company.

     Pro Forma Merger Analysis.  Smith Barney analyzed certain pro forma effects
resulting  from the Merger,  including,  among other  things,  the impact of the
Merger on the projected EPS of IHS for the fiscal years ended 1997 through 1999,
based on internal estimates of the managements of RoTech and IHS. The results of
the pro forma merger analysis suggested that the Merger could be dilutive to the
EPS of IHS in fiscal year 1997 and  accretive  to the EPS of IHS in fiscal years
1998 and 1999,  assuming  certain  cost  savings and other  potential  synergies
anticipated by the  managements of RoTech and IHS to result from the Merger were
achieved.  The actual  results  achieved by the  combined  company may vary from
projected results and the variations may be material.

     Other Factors and  Comparative  Analyses.  In rendering its opinion,  Smith
Barney considered  certain other factors and conducted certain other comparative
analyses, including, among other things, a review of (i) indications of interest
received  from third  parties  other than IHS;  (ii)  historical  and  projected
financial  results of RoTech and IHS;  (iii) the  history of trading  prices and
volume for RoTech Common Stock and IHS Common Stock and the relationship between
movements  of such common  stock,  movements in the common stock of the Selected
Companies and Long-Term  Care  Companies and movements in the S&P Industrial 500
Index; (iv) selected  published  analysts' reports on RoTech and IHS,  including
analysts'  estimates as to the earnings growth  potential of RoTech and IHS; and
(v) a comparison of the Exchange  Ratio with the  historical  ratio of the daily
closing prices of RoTech Common Stock and IHS Common Stock.

     Pursuant to the terms of Smith  Barney's  engagement,  RoTech has agreed to
pay Smith  Barney for its  services in  connection  with the Merger an aggregate
financial  advisory  fee  equal to 0.75% of the total  consideration  (including
liabilities  assumed)  payable in  connection  with the Merger.  RoTech has also
agreed  to  indemnify   Smith  Barney  and  related   persons   against  certain
liabilities,  including  liabilities under the federal  securities laws, arising
out of Smith Barney's engagement.

     Smith Barney has advised  RoTech that, in the ordinary  course of business,
Smith Barney and its  affiliates  may actively  trade or hold the  securities of
RoTech  and IHS for their own  account  or for the  account  of  customers  and,
accordingly,  may at any time hold a long or short position in such  securities.
Smith Barney has in the past provided  investment banking services to RoTech and
IHS  unrelated  to the  proposed  Merger,  for which  services  Smith Barney has
received compensation.  In addition,  Smith Barney and its affiliates (including
Travelers Group Inc. and its affiliates) may maintain  relationships with RoTech
and IHS.

     Smith Barney is an internationally  recognized  investment banking firm and
was  selected  by  RoTech  based on Smith  Barney's  experience,  expertise  and
familiarity with RoTech and its business.  Smith Barney regularly engages in the
valuation of businesses  and their  securities  in  connection  with mergers and
acquisitions,    negotiated    underwritings,    competitive   bids,   secondary
distributions  of  listed  and  unlisted  securities,   private  placements  and
valuations for estate, corporate and other purposes.

REGULATORY APPROVALS

     As  conditions  precedent  to the  consummation  of the Merger,  the Merger
Agreement requires,  among other things, that (i) no statute, rule or regulation
shall have been enacted by the  government (or any  governmental  agency) of the
United States or any state, county,  municipality or other political subdivision
thereof  that makes the  consummation  of the  Merger and any other  transaction
contemplated  thereby illegal and (ii) none of IHS, Merger Sub or RoTech nor any
of their  respective  subsidiaries  shall be  subject  to any  order,  decree or
injunction by a court of competent jurisdiction which (a) prevents or materially
delays  the  consummation  of  the  Merger  or (b)  would  impose  any  material
limitation  on the  ability  of IHS  effectively  to  exercise  full  rights  of
ownership  of the common  stock of the  Surviving  Corporation  or any  material
portion of the assets or business of RoTech, taken as a whole.


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<PAGE>

     Certain  persons,  such as states'  attorneys  general and private parties,
could challenge the Merger as violative of the antitrust laws and seek to enjoin
the consummation of the Merger and, in the case of private persons, also seek to
obtain treble damages.  There can be no assurance that a challenge to the Merger
on antitrust  grounds will not be made or, if such a challenge is made,  that it
will not be  successful.  Neither  IHS nor RoTech  intends  to seek any  further
stockholder approval or authorization of the Merger Agreement as a result of any
action that it may take to resist or resolve any  objections by the FTC or other
objections, unless required to do so by applicable law.


     The HSR Act provides that certain business  mergers  (including the Merger)
may not be consummated  until certain  information has been furnished to the DOJ
and the FTC and certain  waiting period  requirements  have been  satisfied.  On
August 13, 1997, IHS and RoTech made their  respective  filings with the DOJ and
the FTC with  respect to the Merger  Agreement,  and on  September  12, 1997 the
waiting period under the HSR Act expired.  Notwithstanding the expiration of the
waiting  period of the HSR Act,  the FTC,  the DOJ or others  could take  action
under the antitrust laws,  including,  prior to the Effective  Time,  seeking to
enjoin the consummation of the Merger or, after the Effective Time,  seeking the
divestiture  by IHS of all or any part of the assets of RoTech  acquired  in the
Merger.  There can be no  assurance  that a challenge to the Merger on antitrust
grounds will not be made or, if such a challenge  is made,  that it would not be
successful. 

     The operations of each of IHS and RoTech are subject to a substantial  body
of  federal,  state,  local and  accrediting  body laws,  rules and  regulations
relating to the conduct,  licensing and development of healthcare businesses and
facilities.  As a result,  IHS and RoTech will be required to file  applications
and notices  with  various  federal  and state  regulatory  agencies,  including
without limitation the United States Drug Enforcement Agency, in connection with
the transactions contemplated by the Merger Agreement.


NYSE LISTING

     A Subsequent  Listing  Application  will be filed with the NYSE to list the
shares of IHS Common  Stock to be issued to RoTech  stockholders  in  connection
with the  Merger.  Although  no  assurance  can be given  that the shares of IHS
Common Stock so issued will be accepted for listing,  IHS anticipates that these
shares will  qualify  for listing on the NYSE,  upon  official  notification  of
issuance thereof. It is a condition to the Merger that such shares of IHS Common
Stock be approved for listing on the NYSE, upon official notice of issuance,  at
the Effective Time.


LIMITATIONS ON RESALE OF IHS COMMON STOCK BY AFFILIATES

     IHS Common Stock to be issued to RoTech stockholders in connection with the
Merger has been  registered  under the Securities Act. IHS Common Stock received
by  RoTech   stockholders  upon  consummation  of  the  Merger  will  be  freely
transferable  under the Securities  Act,  except for shares issued to any person
who may be deemed an "Affiliate"  (as such term is used in Rule 145  promulgated
under the Securities Act) of RoTech or IHS.  Affiliates of RoTech or IHS may not
sell their shares of IHS Common  Stock  acquired in  connection  with the Merger
except pursuant to an effective  registration statement under the Securities Act
covering such shares or in compliance  with Rule 145 under the Securities Act or
another  applicable   exemption  from  the  registration   requirements  of  the
Securities  Act. In general,  under Rule 145 under the  Securities  Act, for one
year following the Effective  Time, an Affiliate  (together with certain related
persons)  would be  entitled  to sell  shares of IHS Common  Stock  acquired  in
connection with the Merger only through unsolicited "broker  transactions" or in
transactions  directly with a "market  maker," as such terms are defined in Rule
144 under the Securities Act.  Additionally,  the number of shares to be sold by
an Affiliate  (together with certain  related persons and certain persons acting
in concert)  during  such  one-year  period  within any  three-month  period for
purposes of Rule 145 under the  Securities  Act may not exceed the greater of 1%
of the  outstanding  shares of IHS Common  Stock or the average  weekly  trading
volume of such stock during the four calendar weeks  preceding  such sale.  Rule
145 under the  Securities Act would remain  available to Affiliates  only if IHS
remained  current with its  information  filings with the  Commission  under the
Exchange Act. One year after the Effective  Time, an Affiliate  would be able to
sell such IHS Common Stock  without  such manner of sale or volume  limitations,
provided that IHS was current with its Exchange Act information


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<PAGE>

filings and such Affiliate was not then an Affiliate of IHS. Two years after the
Effective  Time,  an  Affiliate  would be able to sell such shares of IHS Common
Stock without any  restrictions  so long as such  Affiliate was not, and had not
been for at least three months prior thereto, an Affiliate of IHS.


ADDITIONAL INTERESTS OF CERTAIN PERSONS IN THE MERGER

     In considering the  recommendation  of the Rotech Board with respect to the
Merger Agreement and the transactions  contemplated thereby, RoTech stockholders
should be aware  that  certain  members of the  management  of RoTech and of the
RoTech  Board have  certain  interests in the Merger that are in addition to the
interests of stockholders of RoTech generally. Certain of these persons may have
participated  in the negotiation and  consideration  of the Merger  Agreement as
well as certain of the arrangements  described below. The RoTech Board was aware
of the  arrangements  and that  such  arrangements  may give  these  individuals
interests in the Merger that are in addition to the  interests  of  stockholders
generally  and  determined  that  such  additional  interests  did not alter its
conclusions regarding the Merger or its recommendation to RoTech's stockholders.
See "- Recommendations of the Boards of Directors - RoTech."


     Arrangements  with Stephen P. Griggs. In connection with and as a condition
to the Merger,  Mr.  Griggs will enter into a  five-year  agreement  with RoTech
whereby he will serve as  President  of RoTech at a base salary of $500,000  per
annum. Under his employment agreement,  Mr. Griggs will receive a $500,000 bonus
in each year in which RoTech's net income  contribution to IHS equals or exceeds
specified targets,  with an additional bonus determined by IHS to be paid if the
net income contribution target is exceeded.  In addition, in connection with the
Merger Mr.  Griggs will receive a one-time  cash sign-on  bonus of $3.5 million,
payable at the Closing, and be issued warrants to purchase 750,000 shares of IHS
Common Stock,  at a per share exercise price equal to the average  closing sales
price of the IHS Common Stock on the NYSE for the 15 business  days prior to the
Closing Date,  such warrants to vest at a rate of 20% per year  beginning on the
first  anniversary of the Closing Date (subject to acceleration upon Mr. Griggs'
death or the  occurrence  of a change in control of IHS).  Pursuant to a related
agreement,  RoTech will also be obligated to pay to Mr. Griggs the amount of any
excise tax payable by him under  Section 4999 of the Code (or any  corresponding
provisions  of state  or local  tax  law) as a  result  of any  payments  to him
pursuant to his employment  agreement or in connection with the Merger,  as well
as the  income tax and excise  tax on such  additional  compensation  such that,
after the payment of income and excise taxes, Mr. Griggs is in the same economic
position in which he would have been if the  provisions  of Section  4999 of the
Code (or any  corresponding  provisions  of state of local tax law) had not been
applicable.

     Arrangements with Mr. Kennedy. In connection with and as a condition to the
Merger,  Mr. William P. Kennedy,  RoTech's Chairman and Chief Executive Officer,
will enter into a severance  and  non-competition  agreement  with RoTech  which
provides  that he will  resign as an officer  and  director  of RoTech  upon the
Closing  of the  Merger.  Following  the  Merger,  Mr.  Kennedy  will serve as a
consultant  to RoTech  for three  years for a  consulting  fee of $1.0  million,
payable in one lump sum at the Closing. In addition, Mr. Kennedy has agreed that
following  the Merger,  he will not  compete  with IHS or RoTech for 15 years in
consideration of a non-compete payment of $4.0 million,  payable in one lump sum
at the Closing,  although beginning five years after the Closing Mr. Kennedy can
provide  consulting  services  to  competing  businesses.  Pursuant to a related
agreement, RoTech will also be obligated to pay to Mr. Kennedy the amount of any
excise tax payable by him under  Section 4999 of the Code (or any  corresponding
provisions  of state  or local  tax  law) as a  result  of any  payments  to him
pursuant to the severance and  non-competition  agreement or in connection  with
the  Merger,  as  well  as the  income  tax and  excise  tax on such  additional
compensation  such that,  after the  payment of income  and  excise  taxes,  Mr.
Kennedy  is in the same  economic  condition  in which he would have been if the
provisions of Section 4999 of the Code (or any corresponding provisions of state
or local tax law) had not been  applicable.  In  addition,  IHS has  reached  an
agreement  in  principle  to  purchase,  for $4.0  million,  a 30% interest in a
newly-formed  limited  partnership  controlled  by Mr.  Kennedy,  which  limited
partnership will enter into a marketing arrangement for pharmaceutical  products
produced by Nephron Pharmaceuticals  Corporation,  a corporation wholly-owned by
Mr. Kennedy, all on terms to be mutually agreed upon. 

     Arrangements  with  Ms. Irish. In connection with and as a condition to the
Merger,  Ms. Rebecca R. Irish, RoTech's Chief Financial Officer, will enter into
a severance and non-competition agreement with RoTech


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<PAGE>

which  provides that she will resign as an officer of RoTech upon the Closing of
the Merger. Following the Merger, Ms. Irish will serve as a consultant to RoTech
for two years for a consulting  fee of $250,000,  payable in one lump sum at the
Closing.  In addition,  Ms. Irish has agreed that following the Merger, she will
not compete with IHS or RoTech for 15 years in  consideration  of a  non-compete
payment  of $1.0  million,  payable  in one  lump sum at the  Closing,  although
beginning  five years  after the  Closing  Ms.  Irish can  provide  services  to
competing  businesses  as a  consultant,  employee or  otherwise.  Pursuant to a
related agreement,  RoTech will also be obligated to pay to Ms. Irish the amount
of any  excise  tax  payable  by her  under  Section  4999 of the  Code  (or any
corresponding  provisions of state or local tax law) as a result of any payments
to her pursuant to the severance and non-competition  agreement or in connection
with the  Merger,  as well as the income  tax and excise tax on such  additional
compensation  such that, after the payment of income and excise taxes, Ms. Irish
is in the same economic  position in which she would have been if the provisions
of Section 4999 of the Code (or any  corresponding  provisions of state or local
tax law) had not been applicable.

     Stock Options and Rights. Pursuant to the terms of the Merger Agreement and
the outstanding  options,  as of the Effective Time, by virtue of the Merger and
without  any action on the part of the  optionholders,  each  option to purchase
shares of RoTech  Common  Stock  that is  outstanding  immediately  prior to the
Effective Time ("RoTech Options"), whether or not exercisable, shall be replaced
by a substitute option (such new options being  hereinafter  referred to as "IHS
Exchange  Options") to purchase  that number of shares of IHS Common Stock equal
to the number of shares of RoTech Common Stock subject to such option multiplied
by the Exchange  Ratio at an exercise  price per share of IHS Common Stock equal
to the option price per share of RoTech  Common Stock  subject to such option in
effect  immediately  prior to the Effective Time divided by the Exchange  Ratio.
Each such IHS Exchange  Option will  otherwise  contain  substantially  the same
terms and  conditions  as the RoTech  Option it  replaces,  except  that the IHS
Exchange  Options will allow  "cashless"  exercise.  All unvested RoTech Options
(other  than  options  for  50,000   shares)  will  become   fully-vested   upon
consummation  of the Merger.  Mr. Griggs,  Ms. Irish and Ms. Janet Ziomek,  Vice
President of Finance of RoTech, currently own RoTech Options to purchase 850,000
shares, 200,000 shares and 100,000 shares, respectively,  of RoTech Common Stock
at  weighted  average  per share  exercise  prices of $13.92,  $5.94 and $13.88,
respectively. Upon consummation of the Merger, the RoTech Options of Mr. Griggs,
Ms.  Irish  and Ms.  Ziomek  will  become,  if wholly  unexercised  prior to the
Effective Time, IHS Exchange Options to purchase 493,510 shares,  116,120 shares
and 58,060  shares,  respectively,  of IHS Common Stock at weighted  average per
share exercise prices of $23.98, $10.23 and $23.91, respectively.

     In  addition,  each of William A.  Walker II,  Jack T.  Weaver and  Leonard
Williams,  the  directors of RoTech other than William P. Kennedy and Stephen P.
Griggs,  is a participant  in RoTech's  Restricted  Stock Plan for  Non-Employee
Directors (the  "Restricted  Stock Plan").  Under the Restricted  Stock Plan, as
amended,  each  non-employee  director of RoTech is  entitled,  for each year of
service on the RoTech  Board,  to that number of shares of RoTech  Common  Stock
which  results from dividing the sum of $5,000 by the price of a share of RoTech
Common Stock at the close of trading on the date of the annual meeting of RoTech
stockholders.  Each of Messrs. Walker, Weaver and Williams is currently entitled
to 1,764 shares of RoTech Common Stock  pursuant to the  Restricted  Stock Plan,
which shares will vest and be distributed  simultaneous with consummation of the
Merger,  and each of them  will  receive  1,024  shares of IHS  Common  Stock in
respect thereof in the Merger.

     Indemnification  of RoTech Directors and Executive Officers. IHS and Merger
Sub  have  agreed,  from  and  after  the Effective Time, to continue to advance
legal  fees  and  expenses  and  to  indemnify  present  and former officers and
directors  of  RoTech,  as  provided  in  RoTech's Articles of Incorporation and
By-laws  as  now  in  effect,  and  to continue to perform under indemnification
agreements  currently  in  effect between RoTech and certain of its officers and
directors,  and  IHS has agreed to maintain in effect for a period of five years
after  the  Effective  Time  policies  of  directors'  and  officers'  liability
insurance  with  substantially  the  same  coverage and containing substantially
similar  terms  and  conditions as RoTech's current policies in respect of acts,
omissions  or  matters  occurring  prior  to  the  Effective Time and subject to
certain  limitations  (provided,  however,  that the foregoing does not obligate
IHS  to  provide  any  greater officers' and director's liability insurance than
that  generally  provided  to  IHS'  officers  and  directors).  See "The Merger
Agreement - Indemnification; Insurance."


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<PAGE>

ACCOUNTING TREATMENT


     The Merger will be accounted for under the "purchase"  method of accounting
in  accordance  with  GAAP.   Under  this  method  of  accounting,   the  Merger
consideration  will be allocated to RoTech's assets and  liabilities  based upon
their estimated fair market value at the Closing Date of the Merger. The excess,
if any, of purchase  price over the fair values of the net assets  acquired will
be recorded as intangible  assets and amortized  over a 15 to 40 year  estimated
life for accounting purposes.  Assuming a price per share of IHS Common Stock on
the  Closing  Date of the Merger of $34.69  (based on the  closing  price of IHS
Common  Stock on August  11,  1997) and  based on the  approximately  24,177,000
shares of RoTech Common Stock  outstanding on April 30, 1997, IHS will recognize
intangible assets of approximately  $545.1 million  (substantially  all of which
will  be  goodwill),  which  will  result  in  annual  amortization  expense  of
approximately  $13.8  million.  The actual amount of  intangible  assets will be
based upon the  closing  price of the IHS Common  Stock on the day the Merger is
consummated  and the number of shares of IHS Common  Stock issued in the Merger.
At September , 1997 (the last business day prior to the date of this Joint Proxy
Statement/Prospectus),   26,439,322   shares  of  RoTech   Common   Stock   were
outstanding.  In addition,  RoTech's  operating results will be included in IHS'
consolidated  operating  results  from and after the Closing Date of the Merger.


CERTAIN FEDERAL INCOME TAX CONSEQUENCES

     The following  summary,  based upon current law, is a general discussion of
the principal federal income tax consequences of the Merger, assuming the Merger
is  consummated  as  contemplated  herein.  This summary is based upon the Code,
applicable  regulations  promulgated  under the Code by the Treasury  Department
("Treasury Regulations") and administrative rulings and judicial authority as of
the date hereof,  all of which are subject to change,  possibly with retroactive
effect.  Any such change could affect the  continuing  validity of this summary.
This summary  applies to holders of RoTech Common Stock who hold their shares of
RoTech Common Stock as capital assets. This summary does not discuss all aspects
of income taxation that may be relevant to a particular  holder of RoTech Common
Stock in light of such holder's  specific  circumstances  or to certain types of
holders  subject to special  treatment  under the  federal  income tax laws (for
example,  foreign  persons,  dealers in  securities,  banks and other  financial
institutions,  insurance companies,  regulated investment companies,  tax-exempt
organizations,  and holders  who acquire  RoTech  Common  Stock  pursuant to the
exercise of options or otherwise as  compensation),  and it does not discuss any
aspect of state, local, foreign or other tax laws. Consequently,  each holder of
RoTech  Common  Stock  should  consult his, her or its own tax advisor as to the
specific tax consequences of the Merger to that stockholder.

     Neither IHS nor RoTech has requested or will receive an advance ruling from
the  Internal  Revenue  Service  (the  "Service")  as to the federal  income tax
consequences  of the Merger.  The  respective  obligations  of RoTech and IHS to
consummate  the Merger are  conditioned  upon receipt of certain legal  opinions
relating  to the federal  income tax  consequences  of the  Merger,  in form and
substance  satisfactory  to RoTech  and IHS and their  respective  counsel.  The
opinions of such counsel are based upon the facts that are described herein, and
upon certain assumptions and customary  representations  made by RoTech, IHS and
Merger  Sub and by the  management  of RoTech and by the  management  of IHS and
Merger Sub.  Such  opinions are also based upon the Code,  Treasury  Regulations
currently in effect thereunder,  current  administrative rulings and practice by
the Service,  and judicial  authority,  all of which are subject to change.  Any
such change  could  affect the  continuing  validity of such  opinions  and this
discussion.  In addition, an opinion of counsel is not binding upon the Service,
and there can be no assurance,  and none is hereby given,  that the Service will
not take a position which is contrary to one or more positions  reflected in the
opinions of such counsel,  or that such opinions will be upheld by the courts if
challenged by the Service.  See "Risk Factors - Risks Related to Federal  Income
Tax Consequences."

     As of the  date of this  Joint  Proxy  Statement/Prospectus,  Winderweedle,
Haines,  Ward & Woodman,  P.A.  has  advised  RoTech that in its opinion (i) the
Merger will qualify as a reorganization  pursuant to Section 368(a) of the Code,
(ii)  no gain  or  loss  will be  recognized  by  RoTech  as the  result  of the
consummation  of the Merger,  and (iii) no gain or loss will be  recognized by a
RoTech  stockholder  upon the exchange of the shares of RoTech  Common Stock for
shares of IHS Common  Stock  pursuant to this  Merger,  except on the receipt of
cash in lieu of a fractional share interest in IHS Common Stock.


                                       65
<PAGE>

     As of the  date of  this  Joint  Proxy  Statement/Prospectus,  Fulbright  &
Jaworski  L.L.P.  has  advised  IHS and Merger Sub that in its  opinion  (i) the
Merger will qualify as a  reorganization  pursuant to Section 368(a) of the Code
and (ii) no gain or loss will be recognized by either IHS,  Merger Sub or RoTech
as the result of the consummation of the Merger.

     Provided  that  the  Merger  constitutes  a  tax-free  reorganization,  the
aggregate  adjusted tax basis of the IHS Common Stock  received  (including  any
fractional  share  interests  deemed  received) by a stockholder  of RoTech as a
result of the Merger will be the same as the aggregate adjusted tax basis of the
shares of RoTech  Common Stock  surrendered  in exchange  therefor.  The holding
period  of the  IHS  Common  Stock  received  (including  any  fractional  share
interests  deemed received) by a stockholder of RoTech as a result of the Merger
will include the holding period of the shares of RoTech Common Stock surrendered
in exchange therefor.  Any cash that a stockholder of RoTech receives in lieu of
a fractional  interest in IHS Common Stock will be treated as if the  fractional
share were  distributed  in the Merger and then  redeemed,  resulting in gain or
loss upon receipt of such cash taxed as provided in Section 302 of the Code.  To
prevent "backup  withholding" of federal income tax on any payments of cash to a
RoTech stockholder in the Merger, a RoTech stockholder must, unless an exception
applies under the applicable law and Treasury Regulations,  provide the payor of
such cash with such holder's correct taxpayer identification number ("TIN") on a
substitute  Form W-9 and certify under  penalties of perjury that such number is
correct  and  that  such  holder  is not  subject  to  backup  withholding.  The
exceptions   provide  that  certain  holders   (including,   among  others,  all
corporations  and certain foreign  individuals)  are not subject to these backup
withholding  and reporting  requirements.  In order for a foreign  individual to
qualify  as an  exempt  recipient,  however,  he or she  must  submit  a  signed
statement (i.e.,  Certificate of Foreign Status on Form W-8) attesting to his or
her  exempt  status.  A  Substitute  Form W-9 will be  provided  to each  RoTech
stockholder  in the letter of  transmittal to be mailed to each holder after the
Effective Time. If the correct TIN and  certifications  are not provided,  a $50
penalty  may be imposed on a RoTech  stockholder  by the  Service,  and any cash
received by such  stockholder may be subject to backup  withholding at a rate of
31%.

     THE DISCUSSION SET FORTH ABOVE IS INTENDED ONLY AS A GENERAL SUMMARY OF THE
PRINCIPAL FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER BASED ON EXISTING LAW AS
OF THE DATE OF THIS JOINT PROXY STATEMENT/PROSPECTUS, AND DOES NOT PURPORT TO BE
AN ANALYSIS OR DISCUSSION OF ANY CONSEQUENCES  ARISING UNDER THE TAX LAWS OF ANY
STATE,  LOCALITY OR FOREIGN  JURISDICTION.  STOCKHOLDERS  OF ROTECH ARE URGED TO
CONSULT THEIR TAX ADVISORS TO DETERMINE THE PARTICULAR TAX  CONSEQUENCES TO THEM
OF THE MERGER (INCLUDING THE APPLICABILITY AND EFFECT OF FEDERAL,  STATE, LOCAL,
FOREIGN AND OTHER TAX LAWS).


NO APPRAISAL RIGHTS

     Under  the DGCL,  no  holders  of IHS  Common  Stock  will be  entitled  to
appraisal  rights in connection with the Merger because the shares of IHS Common
Stock  entitled  to vote on the Merger  are listed on the NYSE and also  because
approval of the Merger by the holders of IHS Common Stock is not required  under
the DGCL.  Under the FBCA, no holders of RoTech Common Stock will be entitled to
appraisal  rights in  connection  with the Merger  because  the shares of RoTech
Common Stock are listed on the Nasdaq National Market.


ROTECH DEBENTURES

     As  of  the  Effective  Time,  RoTech's   outstanding  5  1/4%  convertible
subordinated  debentures  due 2003 (the "RoTech  Debentures")  in the  aggregate
principal amount of $110 million and having a current conversion price of $26.25
per share of RoTech  Common  Stock (38.1 shares per $1,000  principal  amount of
RoTech Debentures) will become convertible into IHS Common Stock at a conversion
price of $45.21 per share (22.12  shares per $1,000  principal  amount of RoTech
Debentures).  Pursuant  to the terms of the  indenture  under  which the  RoTech
Debentures  were  issued,  IHS is obligated  to offer to  repurchase  the RoTech
Debentures immediately following the Merger.


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<PAGE>

                             THE MERGER AGREEMENT

     The  following  description  of  the  material  provisions  of  the  Merger
Agreement  is  only  a  summary  and  does  not  purport  to be  complete.  This
description  is qualified  in its entirety by reference to the complete  text of
the Merger  Agreement,  a copy of which is incorporated  herein by reference and
attached as Appendix A hereto. All IHS and RoTech stockholders are urged to read
carefully the Merger Agreement in its entirety.


THE MERGER

     The Merger Agreement  provides that,  subject to the approval of the Merger
Agreement by the  stockholders of IHS and Rotech and the  satisfaction or waiver
of other  conditions  to the  Merger,  Merger  Sub will be merged  with and into
RoTech,  with RoTech  continuing  as the Surviving  Corporation  and as a direct
wholly-owned subsidiary of IHS.


EFFECTIVE TIME AND EFFECTS OF THE MERGER

     If the Merger  Agreement is approved by the stockholders of IHS and RoTech,
and the other  conditions to the Merger are  satisfied or waived,  the Effective
Time will occur at the time of filing of a  certificate  of merger,  in the form
required by and  executed in  accordance  with the FBCA,  with the  Secretary of
State of the State of Florida.  It is presently  contemplated that the Effective
Time will occur as promptly as practicable  after the Merger  Agreement has been
approved by the  stockholders  of IHS and RoTech.  At the  Effective  Time,  the
Articles of  Incorporation  and By-laws of Merger Sub, as in effect  immediately
prior to the Effective Time, shall be the articles of incorporation  and by-laws
of the Surviving  Corporation  until  thereafter  changed or amended as provided
therein or by applicable law. The directors of Merger Sub  immediately  prior to
the Effective Time will be the directors of the Surviving  Corporation,  and the
officers  of Merger  Sub  immediately  prior to the  Effective  Time will be the
initial  officers  of the  Surviving  Corporation,  in  each  case  until  their
successors  are duly elected or appointed and qualify in the manner  provided in
the articles of incorporation  and by-laws of the Surviving  Corporation,  or as
otherwise provided by law.


CONVERSION OF ROTECH SHARES

     The Merger Agreement  provides that, as of the Effective Time, by virtue of
the Merger and  without  any action on the part of any RoTech  stockholder,  (i)
each share of RoTech Common Stock issued and  outstanding  immediately  prior to
the Effective Time (except for shares, if any, owned by RoTech as treasury stock
or owned by any  wholly-owned  subsidiary of RoTech) shall be converted into the
right to receive .5806 of a share of IHS Common Stock;  and (ii) each issued and
outstanding  share  of  common  stock of  Merger  Sub  immediately  prior to the
Effective  Time shall be converted  into one newly issued share of common stock,
par value $.01 per share,  of the Surviving  Corporation.  At the Effective Time
all shares of RoTech Common Stock owned by RoTech or any wholly-owned subsidiary
of RoTech shall automatically be canceled as a result of the consummation of the
Merger.

     For a  description  of the  treatment  of  outstanding  options to purchase
RoTech  Common Stock and the RoTech  Debentures,  see "- Stock  Options and "The
Merger - RoTech  Debentures."  ROTECH  STOCKHOLDERS  SHOULD NOT SURRENDER  THEIR
SHARE CERTIFICATES FOR EXCHANGE UNTIL THEY RECEIVE A TRANSMITTAL FORM.


NO FRACTIONAL SHARES OF IHS COMMON STOCK

     No fractional  shares of IHS Common Stock will be issued in the Merger.  In
lieu of any such fractional shares of IHS Common Stock, each holder of shares of
RoTech  Common  Stock who  otherwise  would be entitled to receive a  fractional
share of IHS Common Stock pursuant to the Merger will be paid an amount in cash,
without interest,  equal to such fraction  multiplied by the Average IHS Trading
Price  (as  defined  below).  The  fractional  share  interests  of each  RoTech
stockholder will be aggregated,  and no RoTech  stockholder will receive cash in
an amount equal to or greater than the


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<PAGE>

value of one full share of IHS Common  Stock.  The "Average  IHS Trading  Price"
means the average  closing  price of the IHS Common Stock on the NYSE  Composite
Tape for the 30 trading day period ending on the second trading day prior to the
Closing Date.


EXCHANGE OF SHARE CERTIFICATES

     Exchange  Agent.  Prior  to the  Effective  Time,  IHS will  enter  into an
agreement with the Exchange Agent which will provide that IHS shall deposit with
the Exchange  Agent as of the Effective  Time, for the benefit of the holders of
RoTech  Shares,  certificates  representing  the  shares  of  IHS  Common  Stock
(together with any dividends or distributions with respect thereto with a record
date after the  Effective  Time,  the  "Exchange  Fund")  which are  issuable in
exchange for outstanding RoTech Shares pursuant to the Merger Agreement.

     Exchange Procedures.  As soon as reasonably practicable,  but no later than
ten business days after the Effective Time, the Exchange Agent will mail to each
holder of record of a certificate or certificates which immediately prior to the
Effective Time represented  outstanding RoTech Shares (the "Certificates") whose
shares were converted into the right to receive IHS Common Stock pursuant to the
Merger Agreement (i) a letter of transmittal  (which shall specify that delivery
shall be effected,  and risk of loss and title to the  Certificates  shall pass,
only upon  delivery of the  Certificates  to the Exchange  Agent and shall be in
such form and have such other provisions as IHS may reasonably specify) and (ii)
instructions  for use in effecting the surrender of the Certificates in exchange
for certificates  representing  shares of IHS Common Stock.  Upon surrender of a
Certificate for cancellation to the Exchange Agent, together with such letter of
transmittal,  duly  executed,  and such other  documents  as may  reasonably  be
required by the Exchange Agent, the holder of such Certificate shall be entitled
to receive in exchange therefor a certificate  representing that number of whole
shares of IHS Common  Stock which such holder has the right to receive  pursuant
to the provisions of the Merger Agreement and any cash which may be paid in lieu
of a fractional  share of IHS Common Stock,  and the  Certificate so surrendered
shall  forthwith be canceled.  In the event of a transfer of ownership of RoTech
Shares which is not registered in the transfer  records of RoTech, a certificate
representing the proper number of shares of IHS Common Stock may be issued,  and
any cash which may be paid in lieu of a fractional share of IHS Common Stock may
be paid,  to a person  other than the person in whose  name the  Certificate  so
surrendered is registered,  if such  Certificate  shall be properly  endorsed or
otherwise be in proper form for transfer and the person requesting such issuance
shall pay any  transfer  or other taxes  required  by reason of the  issuance of
shares of IHS Common Stock to a person other than the registered  holder of such
Certificate or establish to the  satisfaction of IHS that such tax has been paid
or is not applicable. Until surrendered as contemplated by the Merger Agreement,
each  Certificate  shall be  deemed  at any time  after  the  Effective  Time to
represent  only  the  right to  receive  upon  such  surrender  the  certificate
representing  shares  of IHS  Common  Stock  and cash in lieu of any  fractional
shares of IHS Common Stock as contemplated by the Merger Agreement.  No interest
will be paid or will accrue on any cash payable in lieu of any fractional shares
of IHS Common  Stock or on any cash  dividends  or  distributions  payable  with
respect to IHS Common Stock. To the extent permitted by law, former stockholders
of record of RoTech  shall be entitled to vote after the  Effective  Time at any
meeting of IHS  stockholders the number of whole shares of IHS Common Stock into
which their respective  RoTech Shares are converted,  regardless of whether such
holders have exchanged their  Certificates  for  certificates  representing  IHS
Common Stock in accordance with the Merger Agreement.

     Distributions  with Respect to  Unexchanged  Shares.  No dividends or other
distributions  with  respect  to IHS Common  Stock with a record  date after the
Effective Time shall be paid to the holder of any unsurrendered Certificate with
respect  to the  shares of IHS  Common  Stock  represented  thereby  and no cash
payment in lieu of fractional  shares shall be paid to any such holder until the
surrender of such Certificate in accordance with the Merger  Agreement.  Subject
to the effect of applicable laws,  following  surrender of any such Certificate,
there shall be paid to the holder of the certificate  representing  whole shares
of IHS Common Stock issued in exchange  therefor,  without interest,  (i) at the
time of such  surrender,  the amount of any cash payable in lieu of a fractional
share of IHS  Common  Stock to which such  holder is  entitled  pursuant  to the
Merger Agreement and the amount of dividends or other distri-


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<PAGE>

butions  with a record  date  after the  Effective  Time  theretofore  paid with
respect to such whole  shares of IHS  Common  Stock and (ii) at the  appropriate
payment date, the amount of dividends or other  distributions with a record date
after the  Effective  Time but prior to such  surrender  and with a payment date
subsequent  to such  surrender  payable with respect to such whole shares of IHS
Common Stock.

     No  Further  Ownership  Rights in RoTech  Shares.  All shares of IHS Common
Stock issued upon the surrender for exchange of  Certificates in accordance with
the terms of the Merger Agreement (including any cash paid in lieu of fractional
shares  of IHS  Common  Stock  and any cash  paid in  respect  of  dividends  or
distributions on shares of IHS Common Stock) shall be deemed to have been issued
(and paid) in full  satisfaction  of all rights  pertaining to the RoTech Shares
theretofore represented by such Certificates.

     No Fractional  Shares.  No  certificates or scrip  representing  fractional
shares of IHS Common  Stock shall be issued upon the  surrender  for exchange of
Certificates,  and such  fractional  share  interests will not entitle the owner
thereof to vote or to any rights of a stockholder  of IHS. Each holder of shares
of RoTech  Common Stock  exchanged  pursuant to the Merger  Agreement  who would
otherwise  have been  entitled  to receive a  fraction  of a share of IHS Common
Stock  (after  taking into  account all  Certificates  delivered by such holder)
shall receive,  in lieu thereof,  cash (without  interest) in an amount equal to
such  fractional  part of a share of IHS Common Stock  multiplied by the Average
IHS Trading Price.

     Termination  of  Exchange  Fund.  Any  portion of the  Exchange  Fund which
remains  undistributed  to the holders of the  Certificates for six months after
the Effective  Time shall be delivered to IHS,  upon demand,  and any holders of
the Certificates who have not theretofore  surrendered such  Certificates  shall
thereafter look only to IHS for payment of IHS Common Stock, any cash in lieu of
fractional  shares of IHS Common Stock and any dividends or  distributions  with
respect to IHS Common Stock.

     No Liability.  None of IHS,  Merger Sub, RoTech or the Exchange Agent shall
be liable to any  person  in  respect  of any  shares  of IHS  Common  Stock (or
dividends or distributions  with respect thereto) or cash from the Exchange Fund
delivered to a public official  pursuant to any applicable  abandoned  property,
escheat or similar law.


TREATMENT OF ROTECH STOCK OPTIONS


     As of the Effective Time, by virtue of the Merger and without any action on
the part of the participants  therein,  each option to purchase shares of RoTech
Common  Stock  that is  outstanding  immediately  prior  to the  Effective  Time
("RoTech  Options"),  whether  or  not  exercisable,  shall  be  replaced  by  a
substitute  option  (such new  options  being  hereinafter  referred  to as "IHS
Exchange  Options") to purchase  that number of shares of IHS Common Stock equal
to the number of shares of RoTech Common Stock subject to such option multiplied
by the Exchange  Ratio at an exercise  price per share of IHS Common Stock equal
to the option price per share of RoTech  Common Stock  subject to such option in
effect  immediately  prior to the Effective Time divided by the Exchange  Ratio.
Each such IHS Exchange  Option will  otherwise  contain  substantially  the same
terms and  conditions  as the RoTech  Option it replaces,  provided that the IHS
Exchange  Options will permit  cashless  exercise.  Pursuant to the terms of the
plans under which the RoTech Options were issued,  the unvested  portion of each
RoTech  Option  issued under such plans  (other than options for 50,000  shares)
will immediately vest upon  consummation of the Merger.  As of the RoTech Record
Date, 3,172,000 shares of RoTech Common Stock were issuable upon the exercise of
outstanding RoTech Options,  which options, given the Exchange Ratio of .5806 of
a share of IHS Common Stock per share of RoTech Common Stock,  will be converted
to become options to purchase approximately 1,841,663 shares of IHS Common Stock
at the Effective  Time.  The weighted  average  exercise  price per share of all
RoTech Options  outstanding as of the RoTech Record Date is $11.647 per share of
RoTech Common Stock.  Following the Merger,  the weighted average exercise price
per share of IHS Exchange Options will be approximately  $20.06 per share of IHS
Common Stock.


     IHS has agreed to use its  reasonable  best  efforts to file within  thirty
days after the  Effective  Time a  registration  statement on Form S-8 (or other
appropriate  form under the Securities Act) to register the shares of IHS Common
Stock  issuable  upon  exercise  of the  IHS  Exchange  Options  and to use  its
reasonable efforts to have such registration statement declared effective and to
maintain the effective-


                                       69
<PAGE>

ness of such registration statement until the exercise or expiration of all such
options.  To the extent  permitted by  applicable  law,  IHS shall  register the
reoffer and resale by affiliates of IHS of the shares of IHS Common Stock issued
upon exercise of the IHS Exchange Options.


REPRESENTATIONS AND WARRANTIES

     Under the Merger  Agreement,  IHS,  Merger Sub and RoTech  have each made a
number of  representations  regarding the organization and capital structures of
the  respective   companies  and  their  affiliates,   their  filings  with  the
Commission,  their operations,  financial condition and other matters, including
their authority to enter into the Merger Agreement and to consummate the Merger.
None of the  representations  and  warranties  of the parties  shall survive the
Effective Time.


CONDITIONS TO THE MERGER

     Mutual  Conditions.  The respective  obligations of each of IHS, Merger Sub
and RoTech to effect the Merger are subject to certain conditions, including the
following:  (i) none of IHS,  Merger Sub or RoTech  nor any of their  respective
subsidiaries  shall be subject to any order,  decree or injunction by a court of
competent  jurisdiction  which prevents or materially delays the consummation of
the  Merger or would  impose  any  material  limitation  on the  ability  of IHS
effectively  to exercise  full rights of  ownership  of the common  stock of the
Surviving  Corporation  or any  material  portion of the assets or  business  of
RoTech,  taken as a whole;  (ii) no statute,  rule or regulation shall have been
enacted by the government (or any  governmental  agency) of the United States or
any state,  municipality or other political  subdivision  thereof that makes the
consummation of the Merger or any other significant transaction  contemplated by
the Merger Agreement illegal; (iii) the holders of shares of RoTech Common Stock
and the  holders of shares of IHS Common  Stock  each  shall have  approved  the
adoption  of the Merger  Agreement;  (iv) the  shares of IHS Common  Stock to be
issued in connection with the Merger shall have been approved for listing on the
NYSE,  upon  official  notice  of  issuance,  and  shall  have  been  issued  in
transactions  qualified  or exempt  from  registration  under  applicable  state
securities  laws;  (v) the  Registration  Statement  of which this  Joint  Proxy
Statement/Prospectus  is a part shall have been  declared  effective and no stop
order with respect  thereto shall be in effect;  (vi) IHS, Merger Sub and RoTech
shall have received all consents,  approvals and authorizations of third parties
that are required of such third parties prior to the consummation of the Merger,
except where the failure to obtain such  consents,  approvals or  authorizations
would not have a  material  adverse  effect  on the  business  of the  Surviving
Corporation;  (vii) all approvals of the Merger required under the HSR Act shall
have been obtained or the waiting  periods  thereunder  shall have expired;  and
(viii)  each party shall have  received  the consent to the Merger of its senior
bank lenders (which consents have been received prior to the date hereof).

     Conditions to the Obligations of IHS and Merger Sub. The obligations of IHS
and Merger Sub to consummate the Merger and the other transactions  contemplated
by the Merger  Agreement  are further  subject to, among  others,  the following
conditions: (i) RoTech shall have performed in all material respects each of the
agreements  and acts  required to be  performed by it at or prior to the Closing
Date; (ii) the  representations and warranties of RoTech set forth in the Merger
Agreement  shall be true and correct as of the date of the Merger  Agreement and
as of the Closing Date (except to the extent such representations and warranties
expressly  relate to a specific  date,  in which case such  representations  and
warranties  shall be true and  correct as of such  date),  provided  that RoTech
shall not be deemed to be in breach of any such  representations  or  warranties
(a) if the inaccuracies of all representations of RoTech set forth in the Merger
Agreement would not, in the aggregate,  have a material adverse effect on RoTech
and its  subsidiaries,  taken as a whole or (b) if IHS knew or should have known
such breach  would arise from the taking of any action  permitted to be taken by
RoTech pursuant to Section 7.2 of the Merger Agreement; (iii) IHS and Merger Sub
shall have  obtained,  or  obtained  the  transfer  of, any  licenses  and other
regulatory  approvals  necessary  prior  to the  Effective  Time  to  allow  the
Surviving Corporation to operate RoTech's business, unless the failure to obtain
such  transfer  or  approval  would not have a  material  adverse  effect on the
Surviving Corporation;  (iv) IHS shall have received an opinion from Fulbright &
Jaworski L.L.P.  to the effect that the Merger will constitute a  reorganization
within  the  meaning  of  Section   368(a)  of  the  Code  and  the  opinion  of
Winderweedle,  Haines, Ward & Woodman,  P.A., counsel to RoTech, with respect to
certain other matters; (v) all consents, authorizations, orders


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<PAGE>

and approvals of (or filings or registrations with) any governmental commission,
board or other  regulatory  body  required  in  connection  with the  execution,
delivery and  performance  of the Merger  Agreement  shall have been obtained or
made,  except for filings in connection  with the Merger and any other documents
required to be filed  after the  Effective  Time;  (vi) the opinion of DLJ dated
July 6, 1997 shall not have been adversely  modified or withdrawn as of the date
of  mailing  of this  Joint  Proxy  Statement/Prospectus;  (vii) each of Messrs.
Griggs  and  Kennedy  and Ms.  Irish  shall  have  terminated  their  employment
agreement with RoTech and (a) Mr. Griggs, RoTech's President and Chief Operating
Officer,  shall have entered into a five-year  employment  agreement with RoTech
and (b) each of Mr. Kennedy,  RoTech's Chairman and Chief Executive Officer, and
Ms. Irish, RoTech's Chief Financial Officer, shall have entered into a severance
and non-competition  agreement with RoTech; and (viii) IHS shall have received a
"cold  comfort"  letter  from  Deloitte  &  Touche  LLP,  RoTech's   independent
accountants,  dated the Effective  Time and addressed to IHS, as to such matters
reasonably requested by IHS.

     Conditions  to the  Obligation  of  RoTech.  The  obligation  of  RoTech to
consummate  the Merger  and the other  transactions  contemplated  by the Merger
Agreement is further subject to, among others, the following conditions: (i) IHS
and  Merger  Sub shall  have  performed  in all  material  respects  each of the
agreements  and acts required to be performed by them at or prior to the Closing
Date; (ii) the representations and warranties of IHS and Merger Sub set forth in
the  Merger  Agreement  shall be true and  correct  as of the date of the Merger
Agreement and as of the Closing Date (except to the extent such  representations
and  warranties  expressly  relate  to a  specific  date,  in  which  case  such
representations  and  warranties  shall be true and  correct  as of such  date),
provided   that  IHS   shall  not  be  deemed  to  be  in  breach  of  any  such
representations  or warranties if the  inaccuracies of all  representations  and
warranties of IHS set forth in the Merger Agreement would not, in the aggregate,
have a material  adverse effect on IHS and its  subsidiaries,  taken as a whole;
(iii) RoTech shall have received an opinion from  Winderweedle,  Haines,  Ward &
Woodman,  P.A., to the effect that the Merger will  constitute a  reorganization
within  the  meaning of  Section  368(a) of the Code and the  opinion of Blass &
Driggs with respect to certain other matters; (iv) the opinion from Smith Barney
opining that the  consideration to be received in the Merger is fair to RoTech's
stockholders  from a  financial  point of view  shall  not have  been  adversely
modified or withdrawn  as of the date of this Joint Proxy  Statement/Prospectus;
(v) all  consents,  authorizations,  orders  and  approvals  of (or  filings  or
registrations with) any governmental commission,  board or other regulatory body
required in  connection  with the  execution,  delivery and  performance  of the
Merger  Agreement  shall  have been  obtained  or made,  except  for  filings in
connection  with the Merger and any other  documents  required to be filed after
the Effective  Time; and (vi) RoTech shall have received a letter from KPMG Peat
Marwick  LLP,  IHS'  independent  accountants,  dated  the  Effective  Time  and
addressed to RoTech, as to such matters reasonably requested by RoTech.


CONDUCT OF ROTECH BUSINESS PENDING THE MERGER; OTHER COVENANTS

     The Merger  Agreement  provides  that,  prior to the Effective  Time or the
termination  of the Merger  Agreement,  RoTech will  conduct its business in the
ordinary  course  and will  use its  commercially  reasonable  best  efforts  to
preserve the business  organization  of RoTech intact,  to keep available to IHS
and the Surviving  Corporation the services of the present  employees of RoTech,
and to  preserve  for IHS and the  Surviving  Corporation  the  goodwill  of the
suppliers, customers and others having business relations with RoTech.

     Under the Merger Agreement,  RoTech has agreed that, prior to the Effective
Time, it will not and will not permit any of its  subsidiaries  to (in each case
other  than (i) as  contemplated  by the terms of the Merger  Agreement  and the
other documents  contemplated  thereby,  (ii) with respect to  transactions  for
which  there is a binding  commitment  existing  prior to the date of the Merger
Agreement, and (iii) certain other transactions disclosed to IHS), without first
obtaining  the written  consent of IHS: (i) encumber any asset or enter into any
transaction  or make any  contract or  commitment  relating  to the  properties,
assets and business of RoTech,  other than in the  ordinary  course of business;
(ii) enter into any employment  contract which is not terminable  upon notice of
90 days or less, at will,  and without  penalty except as provided in the Merger
Agreement;  (iii)  enter  into any  contract  or  agreement  which (a) cannot be
terminated or does not  terminate  within 12 months or less without cause or (b)
obligates  RoTech for  amounts in excess of  $250,000;  (iv) make any payment or
distribution to the trustee under


                                       71
<PAGE>

any bonus,  pension,  profit-sharing  or retirement plan or arrangement or incur
any  obligation  to make  any  such  payment  or  contribution  which  is not in
accordance   with  RoTech's  usual  past  practice,   or  make  any  payment  or
contributions  or incur any  obligation  pursuant  to or in respect of any other
plan or  contract or  arrangement  providing  for  bonuses,  options,  executive
incentive compensation,  pensions,  deferred compensation,  retirement payments,
profit-sharing or the like,  establish or enter into any such plan,  contract or
arrangement,  or terminate or modify any plan; (v) guarantee the  obligations of
any  person,  firm or  corporation,  except in the  ordinary  course of business
consistent with prior  practices;  (vi) amend its Articles of  Incorporation  or
By-laws;  (vii) issue any shares of its capital stock, effect any stock split or
otherwise  change its  capitalization,  except  pursuant to  options,  warrants,
conversion rights or other contractual  rights disclosed in the Merger Agreement
(provided that RoTech may issue to employees  additional  options to purchase up
to 100,000  shares of RoTech Common Stock at an exercise  price of not less than
the market  value of such stock as of the date of grant);  (viii)  discharge  or
satisfy  any  material  lien or  encumbrance,  or pay or  satisfy  any  material
obligation or liability (absolute,  accrued, contingent or otherwise) other than
(a) liabilities shown or reflected on the April 30, 1997 balance sheet of RoTech
(the "RoTech Balance  Sheet") or (b) liabilities  incurred since the date of the
RoTech  Balance  Sheet in the  ordinary  course of  business;  (ix)  increase or
establish any reserve for taxes or any other liability on its books or otherwise
provide  therefor,  except as may be required due to income from  operations  of
RoTech  since the date of the RoTech  Balance  Sheet in the  ordinary  course of
business;  (x)  mortgage,  pledge  or  subject  to any  lien,  charge  or  other
encumbrance  any assets,  tangible  or  intangible,  other than in the  ordinary
course of business; (xi) acquire any assets,  securities or businesses in excess
of $5.0 million in any one transaction or sell or transfer any material  assets,
cancel any  material  debts or claims or waive any  material  rights;  (xii) (a)
grant any general or uniform  increase in the rates of pay of employees or grant
any material  increase in salary  payable or to become  payable by RoTech to any
officer or  employee,  consultant  or agent  (except as  provided by contract or
bonus  plan),  or (b) by means of any bonus or pension  plan,  contract or other
commitment,  increase in a material  respect the  compensation  of any director,
officer,   employee,   consultant  or  agent,  except  for  bonuses  payable  to
non-officer employees in the ordinary course of business;  (xiii) except for the
Merger Agreement and any other agreement  executed and delivered pursuant to the
Merger Agreement, enter into any material transaction other than in the ordinary
course of business;  (xiv) suffer the loss of,  terminate or modify any contract
to which it or any of its  subsidiaries  is a party involving more than $250,000
of annual  revenue or  expense  other than in  accordance  with its terms;  (xv)
declare, set aside or pay any dividend or make any other distribution or payment
with  respect to any shares of its capital  stock or,  directly  or  indirectly,
redeem,  repurchase or otherwise acquire any shares of its capital stock;  (xvi)
suffer any material  casualty or loss not covered by insurance;  (xvii) make any
material change in applicable  accounting  policies;  (xviii) close any location
from which it operates its business  except in the ordinary  course of business;
or (xix) enter into any agreement or commitment to do any of the foregoing.

     The Merger Agreement contains certain other covenants,  including covenants
relating  to (i)  access  to  information;  (ii)  the  calling  and  holding  of
stockholder  meetings  to  approve  and adopt the  Merger  Agreement;  (iii) the
preparation  and  filing  of  this  Joint  Proxy  Statement/Prospectus  and  the
Registration Statement; (iv) the listing of the IHS Common Stock to be issued in
the Merger on the NYSE; (v) the obtaining of all required governmental and third
party  approvals,  consents,   authorizations  and  permits,  including  without
limitation  the making of all filings under the HSR Act and the exemption of the
Merger from state anti-takeover statutes;  (vi) public announcements;  (vii) the
resignation  of RoTech  officers and  directors on or prior to the Closing Date;
(viii)  the  preparation  by  RoTech  and  delivery  to IHS of  certain  monthly
financial  statements;  (ix) the  filing  with the  Commission  of all  periodic
reports  required under the Exchange Act; (x) the parties not taking any action,
or the parties  failing to take  action,  which  would  cause  their  respective
representations and warranties to be untrue in any material respect, which would
cause any  conditions to the Merger not to be  satisfied,  which would delay the
Effective Time, which would materially adversely affect the ability of any party
to obtain any consents or approvals  required for the consummation of the Merger
without  imposition  of a condition or  restriction  which would have a material
adverse effect on the Surviving  Corporation or which would otherwise materially
impair the ability of such party to consummate the Merger; (xi) coordination and
cooperation  with  respect to actions and filings  with  governmental  agencies,
officers or authorities  and other third  parties,  including the holders of the
RoTech Debentures; (xii) the obtaining of tax opinions (see "The


                                       72
<PAGE>

Merger - Certain  Federal Income Tax  Consequences");  (xiii) notices of certain
events;  and (xiv) the  requirement  that IHS  obtain  RoTech's  consent  before
entering  into any  transaction  which would  require IHS to issue shares of IHS
Common  Stock  having a market  value at the time of  issuance of more than $250
million.


NO SOLICITATION

     RoTech  has  agreed,  until  the  earlier  of  the  Effective  Time  or the
termination  of the Merger  Agreement,  not to  initiate,  solicit or  encourage
(including by way of furnishing assistance or proprietary information),  or take
any other  action to  facilitate,  any  inquiries  or the making of any proposal
relating to, or that may reasonably be expected to lead to, any RoTech Competing
Transaction (as hereinafter defined), or enter into any discussions or negotiate
with any person or entity in furtherance of such inquiries or to obtain a RoTech
Competing Transaction or agree to or endorse any RoTech Competing Transaction or
authorize or permit any of the officers, directors or employees of RoTech or its
subsidiaries or any investment banker, financial advisor,  attorney,  accountant
or other  representative  retained by RoTech or any of its  subsidiaries to take
any such action;  provided,  however, that, prior to the receipt of the approval
of the Merger by RoTech's stockholders at the RoTech Special Meeting, the RoTech
Board shall not be prohibited  from (i) furnishing  information  to, or entering
into  discussions or negotiations  with, any person or entity in connection with
an  unsolicited  bona fide  offer by such  person or  entity to  acquire  RoTech
pursuant to a merger,  consolidation,  share exchange,  business  combination or
other similar transaction or to acquire greater than 50% of the assets of RoTech
and its  subsidiaries,  taken as a whole,  to the  extent and only to the extent
that (a) the RoTech  Board,  after  consultation  with and based upon  advice of
independent  legal  counsel,  determines  in good  faith  that  such  action  is
advisable  for the  RoTech  Board to  comply  with its  fiduciary  duties  under
applicable  law and (b) prior to  furnishing  information  to, or entering  into
discussions or negotiations with, such person, RoTech provides notice to IHS and
enters into a confidentiality  agreement with such person reasonably  calculated
under the  circumstances,  in the reasonable  judgment of RoTech, to protect the
confidentiality of RoTech's proprietary information, or (ii) complying with Rule
14e-2  promulgated  under the  Exchange  Act with  regard to a RoTech  Competing
Transaction.  A "RoTech Competing Transaction" means any of the following (other
than the transactions  contemplated by the Merger  Agreement)  involving RoTech:
(i) any merger,  consolidation,  share exchange, business combination or similar
transaction; (ii) any sale, lease, exchange, mortgage, pledge, transfer or other
disposition of 20% or more of the assets of RoTech and its  subsidiaries,  taken
as a whole;  (iii) any tender  offer or exchange  offer for more than 20% of the
outstanding  shares of the capital  stock of RoTech;  (iv) any person  acquiring
beneficial  ownership  of, or any group (as such term is defined  under  Section
13(d) of the Exchange Act) being formed which beneficially owns or has the right
to acquire beneficial ownership of, 15% or more of the outstanding capital stock
of RoTech; or (v) any public announcement of a proposal, plan or intention to do
any of the foregoing or any agreement to engage in any of the foregoing.


TERMINATION

     The Merger  Agreement  may be terminated at any time prior to the Effective
Time,  either before or after approval of matters  presented in connection  with
the Merger by the holders of RoTech  Common Stock and IHS Common  Stock,  (i) by
mutual  written  consent of IHS,  Merger Sub and RoTech or (ii) by either IHS or
RoTech (a) if any  approval of the holders of RoTech  Common Stock or IHS Common
Stock  necessary to consummate the Merger and the  transactions  contemplated by
the Merger Agreement has not been obtained, (b) if the Merger is not consummated
on or before  November 30, 1997,  unless the failure to consummate the Merger is
the result of a willful and material breach of the Merger Agreement by the party
seeking to terminate the Merger Agreement  (however,  the passage of such period
shall  be  tolled  for  any  part  thereof  (but  not  exceeding  60 days in the
aggregate) during which any party shall be subject to a non-final order, decree,
filing  or  action   restraining,   enjoining  or  otherwise   prohibiting   the
consummation  of  the  Merger  or  the  calling  or  holding  of  a  meeting  of
stockholders),  (c) if any court of competent jurisdiction or other governmental
entity  has  issued  an order,  decree  or  ruling  or taken  any  other  action
permanently enjoining,  restraining or otherwise prohibiting the Merger and such
order, decree, ruling or other action has become final and nonappealable, (d) in
the event of a


                                       73
<PAGE>

material  breach (as defined in the Merger  Agreement) by the other party of any
representation,  warranty,  covenant or other agreement  contained in the Merger
Agreement which is not cured as provided therein  (provided that the terminating
party is not then in Material Breach (as defined in the Merger Agreement) of any
representation,  warranty,  covenant or other agreement  contained in the Merger
Agreement),  (e) in the event of notice  pursuant to the Merger  Agreement  of a
breach by the other  party of any  representation,  warranty,  covenant or other
agreement  contained  in the Merger  Agreement  or notice from such party to the
other  party of such  other  party's  breach  of any  representation,  warranty,
covenant or other agreement  contained in the Merger  Agreement,  in either case
which  cannot  be or has not been  cured as  provided  in the  Merger  Agreement
(provided  that the  terminating  party is not then in  Material  Breach  of any
representation,  warranty,  covenant or other agreement  contained in the Merger
Agreement),  (f) if the  average  of the last per share  sale  prices of the IHS
Common Stock,  as reported on the NYSE Composite  Tape, for the ten  consecutive
trading days ending on the fifth trading day  immediately  preceding the date of
the RoTech  Special  Meeting  is equal to or less than  $33.00 or (g) all of the
mutual conditions to such party's  obligation to consummate the Merger have been
satisfied but any other  condition to such party's  obligation to consummate the
Merger is not capable of being  satisfied  by  November  30, 1997 (or such later
date as permitted by clause (b) above).

     The Merger  Agreement  may be terminated by RoTech at any time prior to the
Effective  Time,  either  before  or after  approval  of  matters  presented  in
connection  with the Merger by the holders of RoTech Common Stock and IHS Common
Stock, if (i) the RoTech Board shall have (a) determined, in the exercise of its
fiduciary  duties  under  applicable  law,  not to  recommend  the Merger to the
holders of RoTech Common Stock or shall have  withdrawn such  recommendation  or
(b) approved,  recommended or endorsed any RoTech  Competing  Transaction  other
than the Merger  Agreement or (ii) the IHS Board fails to make or withdraws  its
recommendation of the adoption of the Merger Agreement or the Merger.

     The  Merger  Agreement  may be  terminated  by IHS at any time prior to the
Effective  Time,  either  before  or after  approval  of  matters  presented  in
connection  with the Merger by the holders of RoTech Common Stock and IHS Common
Stock, if (i) (a) the RoTech Board fails to make or withdraws its recommendation
of the  adoption  of the  Merger  Agreement,  (b) the  RoTech  Board  shall have
recommended to RoTech's stockholders any RoTech Competing Transaction or entered
into an agreement with respect to a RoTech Competing Transaction or (c) a tender
offer or  exchange  offer for 20% or more of the  outstanding  shares of capital
stock of RoTech is commenced,  and the RoTech Board recommends,  within the time
period  specified  under  Rule  14e-2  under the  Exchange  Act,  that  RoTech's
stockholders tender their shares into such tender or exchange offer; or (ii) the
IHS Board shall have  determined,  in the exercise of its fiduciary duties under
applicable  law, not to recommend  the Merger to the holders of IHS Common Stock
or shall have withdrawn such recommendation,

     Each  of IHS and RoTech has agreed to reimburse the other for fees incurred
in  connection  with  the  Merger  Agreement  and to pay a termination fee if it
terminates  the  Merger  Agreement  under certain circumstances. See "- Expenses
and Termination Fees."


EXPENSES AND TERMINATION FEES

     The Merger Agreement  provides that, except as otherwise  described therein
or agreed in writing,  all costs and expenses  incurred in  connection  with the
Merger Agreement and the transactions  contemplated thereby shall be paid by the
party incurring such cost or expense.

     RoTech has agreed that if the Merger  Agreement is terminated by (i) RoTech
because the RoTech Board  approves,  recommends  or endorses a RoTech  Competing
Transaction,  or (ii) IHS because (a) the RoTech Board  recommends to the RoTech
stockholders a RoTech  Competing  Transaction or RoTech enters into an agreement
with respect to a RoTech Competing Transaction or (b) a tender offer or exchange
offer for 20% or more of the  outstanding  capital  stock of RoTech is commenced
and the RoTech Board  recommends,  within the time period  specified  under Rule
14e-2 under the Exchange Act, that  RoTech's  stockholders  tender their shares,
then RoTech will be obligated to reimburse all reasonable  expenses  incurred by
IHS in connection with the Merger  Agreement and to pay to IHS a termination fee
in the amount of $25.0  million  ($15.0  million  in the event of a  termination
pursuant to clause (ii)(b) above if the tender or exchange offer is for at least
20% but less than 50% of the outstanding


                                       74
<PAGE>

shares of capital stock of RoTech) (the "RoTech Termination Fee"). If the RoTech
Termination  Fee is paid,  it will be IHS'  sole and  exclusive  remedy  against
RoTech under the Merger  Agreement.  Alternatively,  if the Merger  Agreement is
terminated by (i) RoTech because RoTech's Board  determines,  in the exercise of
its fiduciary duty under  applicable law, not to recommend the Merger,  or shall
have withdrawn such recommendation or (ii) by IHS because the RoTech Board fails
to make or withdraws its recommendation of the Merger (unless as a result of the
withdrawal  of the  opinion  of Smith  Barney  for  reasons  other than a RoTech
Competing Transaction), then RoTech will be obligated to pay to IHS a fee in the
amount of $5.0 million.

     If the  Merger  Agreement  is  terminated  by (i) IHS  because  IHS'  Board
determines,  in the exercise of its fiduciary duty under  applicable law, not to
recommend  the Merger,  or shall have  withdrawn  such  recommendation,  or (ii)
RoTech  because the IHS Board fails to make or withdraws its  recommendation  of
the Merger,  then IHS will be  obligated to pay to RoTech a fee in the amount of
$10.0 million (the "IHS  Termination  Fee"). If the IHS Termination Fee is paid,
it will be  RoTech's  sole and  exclusive  remedy  against  IHS under the Merger
Agreement.


WAIVER AND AMENDMENT

     The Merger  Agreement  provides  that,  at any time prior to the  Effective
Time,  the  parties  may (i) extend the time for the  performance  of any of the
obligations or other acts of the other parties,  (ii) waive any  inaccuracies in
the representations  and warranties  contained in the Merger Agreement or in any
document  delivered  pursuant to the Merger  Agreement  or (iii)  subject to the
proviso in the following  sentence,  waive compliance with any of the agreements
or  conditions  contained  in the  Merger  Agreement.  In  addition,  the Merger
Agreement may be amended by the parties at any time before or after any required
approval of matters  presented in  connection  with the Merger by the holders of
RoTech Common Stock or IHS Common Stock; provided,  however, that after any such
approval,  no amendment may be made that requires further approval by the RoTech
or IHS stockholders pursuant to the FBCA.


INDEMNIFICATION; INSURANCE

     The Merger Agreement requires IHS and the Surviving  Corporation to advance
legal  fees and  expenses  and to  indemnify  current  and former  officers  and
directors of RoTech for all acts or omissions  occurring  prior to the Effective
Time (the  "Pre-Merger  Matters") to the fullest extent  provided under RoTech's
Articles of Incorporation,  By-laws and indemnification  agreements in effect on
the date of the Merger Agreement.  Pursuant to the Merger Agreement, IHS is also
obligated  to  maintain  in effect  for a period of at least five years from the
Effective Time directors' and officers'  liability  insurance providing at least
the same  coverage  with  respect to  RoTech's  officers  and  directors  as the
policies  maintained by RoTech on behalf of its officers and directors as of the
date of the Merger  Agreement and containing  terms and conditions  which are no
less  advantageous  with  respect to  Pre-Merger  Matters  (to the  extent  such
insurance  is  available  with  respect to such  matters).  Notwithstanding  the
foregoing,  IHS is not obligated to provide any greater officers' and directors'
liability  insurance than that  generally  afforded to officers and directors of
IHS under policies maintained by IHS with respect to its officers and directors.
See "The Merger - Additional Interests of Certain Persons in the Merger."


                                       75
<PAGE>

                   UNAUDITED PRO FORMA FINANCIAL INFORMATION


PRO FORMA FINANCIAL INFORMATION FOR THE COMBINED COMPANY


     The following  unaudited pro forma  financial  information for the combined
company gives effect to the Merger, which is expected to be accounted for by the
purchase  method.  For a description of purchase  accounting with respect to the
Merger and other accounting  matters,  see "The Merger - Accounting  Treatment."
The pro forma condensed  balance sheet gives effect to the Merger (including the
refinancing of certain indebtedness of RoTech in connection with the Merger), as
if the Merger had occurred on June 30, 1997. The pro forma condensed  statements
of  operations  give  effect to the Merger as if it had  occurred  on January 1,
1996. In combining the  financial  information  of IHS and RoTech to reflect the
Merger and the  accounting  policies that will be used by the combined  company,
certain  reclassifications  of  historical  financial  data have been made.  The
following unaudited pro forma condensed  financial  information for the combined
company  does  not  give  pro  forma  effect  to  the  other   acquisitions  and
divestitures  consummated  by IHS and RoTech  during 1996 or 1997,  the Proposed
Lithotripsy Acquisition,  the Proposed CCA Acquisition, the sale of $500 million
of IHS' 9 1/4%  Senior  Notes and the  borrowing  of $750  million of term loans
under the New Credit  Facility.  See "- Pro Forma Financial  Information for the
Combined  Company  and Other  Acquisitions  and  Divestitures"  for  information
showing  the  pro  forma  effect  on  the  combined  company  of  certain  other
acquisitions  and  divestitures  consummated  by IHS in 1996 and 1997 and "- Pro
Forma Financial  Information  for RoTech" for information  showing the pro forma
effect on RoTech of certain  acquisitions  consummated by RoTech during the year
ended July 31,  1997.  See "IHS  Recent  Developments"  for  information  on the
Proposed  Acquisitions,  the sale of the 9 1/4% Senior  Notes and the New Credit
Facility.


     The  following pro forma  financial  information  for the combined  company
should  be  read in  conjunction  with  the  historical  consolidated  financial
statements of IHS and RoTech,  including the respective notes thereto, which are
incorporated  by  reference  in this Joint  Proxy  Statement/Prospectus,  and in
conjunction with the selected historical  consolidated financial data, including
the notes thereto, appearing elsewhere in this Joint Proxy Statement/Prospectus.
See  "Incorporation  of Certain  Documents by  Reference"  and "Summary of Joint
Proxy Statement/Prospectus - Selected Historical Financial Information."

     THE UNAUDITED PRO FORMA CONSOLIDATED FINANCIAL INFORMATION IS PRESENTED FOR
INFORMATIONAL  PURPOSES ONLY AND IS NOT NECESSARILY  INDICATIVE OF THE OPERATING
RESULTS OR  FINANCIAL  POSITION  THAT WOULD HAVE  OCCURRED  HAD THE MERGER  BEEN
CONSUMMATED  AT THE DATES  INDICATED,  NOR IS IT  NECESSARILY  INDICATIVE OF THE
FUTURE OPERATING RESULTS OR FINANCIAL POSITION OF IHS FOLLOWING THE MERGER.



                                       76
<PAGE>

                       INTEGRATED HEALTH SERVICES, INC.
              PRO FORMA COMBINED BALANCE SHEET AS OF JUNE 30, 1997
                                  (UNAUDITED)

                                 (IN THOUSANDS)






<TABLE>
<CAPTION>
                                     ASSETS
                                                   IHS             ROTECH               PRO FORMA           PRO FORMA
                                               HISTORICAL*     HISTORICAL(1)**         ADJUSTMENTS           COMBINED
                                               -------------   -----------------   ---------------------   --------------
<S>                                            <C>             <C>                 <C>                     <C>
Current Assets:
 Cash and cash equivalents   ...............    $   43,105         $  8,738                                 $   51,843
 Temporary investments .....................         2,367                                                       2,367
 Patient accounts and third-party payor
   settlements receivable, net  ............       344,144          116,879                                    461,023
 Inventories, prepaid expenses and
   other current assets   ..................        28,931           23,862                                     52,793
 Income tax receivable    ..................        30,617                -         $         800 (2)           31,417
                                                ----------         --------         ------------            ----------
   Total current assets   ..................       449,164          149,479                   800              599,443
                                                ----------         --------         ------------            ----------
Property, plant and equipment, net .........       910,772          114,847                                  1,025,619
Intangible assets   ........................       633,206          252,433               292,663 (3)        1,178,302
Other assets  ..............................       149,505            1,808                                    151,313
                                                ----------         --------         ------------            ----------
    Total assets ...........................    $2,142,647         $518,567         $     293,463           $2,954,677
                                                ==========         ========         ============            ==========

                                                                 LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
 Current maturities of long-term debt ......    $   13,161         $162,014         $    (162,014)(4)       $   13,161
 Accounts payable and accrued                                                               4,750 (2)
  expenses .................................       276,961           24,660                10,250 (5)          316,621
                                                ----------         --------         ------------            ----------
   Total current liabilities ...............       290,122          186,674              (147,014)             329,782
                                                ----------         --------         ------------            ----------
Long-term debt:
 Convertible subordinated debentures .......       258,750          110,000              (110,000)(4)          258,750
 Other long-term debt less current
   maturities ..............................       946,337                -               272,014 (4)        1,218,351
                                                ----------         --------         ------------            ----------
   Total long-term debt   ..................     1,205,087          110,000               162,014            1,477,101
                                                ----------         --------         ------------            ----------
Other long-term liabilities(6)  ............        35,315                -                                     35,315
Deferred income taxes  .....................        25,073           17,357                                     42,430
Deferred gain on sale-leaseback
 transactions ..............................         5,731                -                                      5,731
Redeemable common stock   ..................             -            3,322                (3,322) (7)               -
Stockholders' equity:
 Common stock ..............................            25                5                     9 (8)               39
 Additional paid-in capital  ...............       492,892          127,403               359,532 (8)          979,827
                                                                                          (74,621)(8)
 Retained earnings (deficit) ...............        89,940           74,621                (3,950)(2)           85,990
 Treasury stock  ...........................        (1,538)            (815)                  815 (8)           (1,538)
                                                ----------         --------         ------------            ----------
   Total stockholders' equity   ............       581,319          201,214               281,785            1,064,318
                                                ----------         --------         ------------            ----------
    Total liabilities and stockholders'
      equity  ..............................    $2,142,647         $518,567         $     293,463           $2,954,677
                                                ==========         ========         ============            ==========
</TABLE>


- ----------


 * As of June 30, 1997


** As of April 30, 1997

                                       77
<PAGE>

                       INTEGRATED HEALTH SERVICES, INC.
                   PRO FORMA COMBINED STATEMENT OF OPERATIONS
                          YEAR ENDED DECEMBER 31, 1996
                                  (UNAUDITED)

                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)





<TABLE>
<CAPTION>
                                                                    IHS           ROTECH           PRO FORMA      PRO FORMA
                                                                HISTORICAL*   HISTORICAL(1)**     ADJUSTMENTS     COMBINED(1)
                                                               ------------- ----------------- ----------------- ------------
<S>                                                            <C>           <C>               <C>               <C>
Net revenues:
 Basic medical services   ....................................  $  389,773       $      -                        $ 389,773
 Specialty medical services  .................................     999,209        344,590                        1,343,799
 Management services and other  ..............................      45,713              -                           45,713
                                                                ----------       ---------                       ----------
   Total revenues   ..........................................   1,434,695        344,590                        1,779,285
                                                                ----------       ---------                       ----------
Costs and expenses:
 Operating expenses ..........................................   1,093,948        258,891                        1,352,839
 Corporate administrative and general ........................      60,976              -                           60,976
 Depreciation and amortization  ..............................      41,681         36,074      $     1,983 (9)      79,738
 Rent   ......................................................      77,785              -                           77,785
 Interest, net   .............................................      64,110          9,456            1,854 (10)     75,420
 Other non-recurring income, net(11)  ........................     (14,457)             -                          (14,457)
                                                                ----------       ---------     ----------        ----------
   Total costs and expenses  .................................   1,324,043        304,421            3,837       1,632,301
                                                                ----------       ---------     ----------        ----------
 Earnings (loss) before equity in earnings of affiliates, in-
   come taxes and extraordinary items ........................     110,652         40,169           (3,837)        146,984
Equity in earnings of affiliates   ...........................         828              -                              828
                                                                ----------       ---------     ----------       ----------
 Earnings (loss) before income taxes and extraordinary
   items   ...................................................     111,480         40,169           (3,837)        147,812
Federal and state income taxes  ..............................      63,715         15,240            1,294          80,249
                                                                ----------       ---------     ----------        ----------
 Earnings (loss) before extraordinary items (12)  ............  $   47,765       $ 24,929      $    (5,131)      $  67,563
                                                                ==========       =========     ==========        ==========
Earnings before extraordinary items per common share:
 Primary   ...................................................  $     2.03       $   0.98                        $    1.76
 Fully-diluted(13)  ..........................................        1.82           0.96                             1.66
                                                                ==========       =========                       ==========
 Weighted average shares (primary) ...........................      23,574         25,513          (10,700)         38,387
 Weighted average shares (fully-diluted)(13)   ...............      31,653         30,063          (15,041)         46,675
                                                                ==========       =========     ==========        ==========
</TABLE>

- ----------

 * Year Ended December 31, 1996

** Twelve Months Ended January 31, 1997

                                       78
<PAGE>

                       INTEGRATED HEALTH SERVICES, INC.
                   PRO FORMA COMBINED STATEMENT OF OPERATIONS
                         SIX MONTHS ENDED JUNE 30, 1997
                                  (UNAUDITED)

                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)





<TABLE>
<CAPTION>
                                                                    IHS           ROTECH          PRO FORMA      PRO FORMA
                                                                HISTORICAL*   HISTORICAL(1)**    ADJUSTMENTS     COMBINED(1)
                                                               ------------- ----------------- ---------------- ------------
<S>                                                            <C>           <C>               <C>              <C>
Net revenues:
 Basic medical services   ....................................   $176,810        $      -                         $  176,810
 Specialty medical services  .................................    722,802         207,266                            930,068
 Management services and other  ..............................     19,304               -                             19,304
                                                                 ---------       ---------                       -----------
   Total revenues   ..........................................    918,916         207,266                          1,126,182
                                                                 ---------       ---------                       -----------
Costs and expenses:
 Operating expenses ..........................................    691,148         154,185                            845,333
 Corporate administrative and general ........................     36,151               -                             36,151
 Depreciation and amortization  ..............................     30,844          21,334      $      (673)(9)        51,505
 Rent   ......................................................     49,795               -                             49,795
 Interest, net   .............................................     44,645           6,784            1,559 (10)       52,988
 Other non-recurring charges, net(14) ........................     20,047               -                             20,047
                                                                 ---------       ---------     ----------        -----------
   Total costs and expenses  .................................    872,630         182,303              886         1,055,819
                                                                 ---------       ---------     ----------        -----------
 Earnings (loss) before equity in earnings of affiliates, in-
   come taxes and extraordinary items ........................     46,286          24,963             (886)           70,363
Equity in earnings of affiliates   ...........................         98               -                                 98
                                                                 ---------       ---------     ----------        -----------
 Earnings (loss) before income taxes and extraordinary
   items   ...................................................     46,384          24,963             (886)           70,461
Federal and state income taxes  ..............................     18,090           9,421            1,058            28,569
                                                                 ---------       ---------     ----------        -----------
 Earnings (loss) before extraordinary items(15)   ............   $ 28,294        $ 15,542      $    (1,944)       $   41,892
                                                                 =========       =========     ==========        ===========
Earnings before extraordinary items per common share:
 Primary   ...................................................   $   1.05        $   0.59                         $     0.99
 Fully-diluted(13)  ..........................................       0.92            0.56                               0.90
                                                                 =========       =========                       ===========
 Weighted average shares (primary) ...........................     26,963          26,506          (11,117)           42,352
 Weighted average shares (fully-diluted)(13)   ...............     36,233          31,069          (15,463)           51,839
                                                                 =========       =========     ==========        ===========
</TABLE>

- ----------

 * Six Months Ended June 30, 1997

** Six Months Ended April 30, 1997

                                       79
<PAGE>

       NOTES TO PRO FORMA FINANCIAL INFORMATION FOR THE COMBINED COMPANY

 (1) Certain  amounts  have been  reclassified  to conform the  presentation  of
     RoTech and IHS. The RoTech  financial  data for the 12 months ended January
     31,  1997 and the six  months  ended  April  30,  1997,  and the pro  forma
     combined  financial  data for the year ended  December 31, 1996 and the six
     months ended June 30, 1997 all include  RoTech's  results of operations for
     the three months ended January 31, 1997.

 (2) Represents  nonrecurring charges directly attributable to the Merger, which
     will be included in IHS' statement of operations within the 12 month period
     following the transaction. Such charges represent the nonrecurring lump sum
     payments to certain RoTech  officers  aggregating  $4,750,000  less related
     income tax benefit of $800,000.  See "The Merger - Additional  Interests of
     Certain Persons in the Merger."

 (3) Represents the excess of the purchase price  (assuming a price per share of
     IHS Common Stock of $34.69 (the closing price of IHS Common Stock on August
     11,  1997)  and  using  the  24,177,000   shares  of  RoTech  Common  Stock
     outstanding  at April 30,  1997  (including  388,079  shares of  redeemable
     common stock (see note 7 below))  adjusted for the Exchange Ratio of .5806)
     including  estimated  direct costs of the Merger of $10,250,000 (see note 5
     below),  over the  estimated  fair  values of the net  assets  acquired  as
     follows:



               Merger consideration for RoTech  ......     $486,949,000
               Direct costs of acquisition   .........       10,250,000
                                                           -------------
                                                            497,199,000
               Stockholders' equity of RoTech   ......      204,536,000
                                                           -------------
                                                           $292,663,000
                                                           =============


     The actual amount of intangible assets will be based upon the closing price
     of the IHS Common Stock on the day the Merger is consummated and the number
     of shares of IHS Common  Stock  issued in the  Merger.  At April 30,  1997,
     RoTech  held  1,994,314   shares  in  escrow  related  to  acquisitions  as
     contingent  shares to be released upon the  development  of future  events,
     with such measurement dates from May 1, 1997 to March 29, 2000. Such shares
     are not considered outstanding until the contingencies have been met.

 (4) Represents the pay down of borrowings  outstanding  under  RoTech's  credit
     facility and repurchase of the RoTech Debentures with borrowings under IHS'
     credit  facility.  Under the terms of the indenture  under which the RoTech
     Debentures were issued,  IHS is obligated to offer to repurchase the RoTech
     Debentures  at a purchase  price equal to 100% of the  aggregate  principal
     amount  thereof  immediately  following the Merger.  Because the conversion
     price of the RoTech  Debentures  ($45.21 after giving effect to the Merger)
     is in excess of the current  market price of the IHS Common Stock,  IHS has
     assumed for these  purposes that holders of RoTech  Debentures  will accept
     IHS' repurchase offer.



 (5) Represents the estimated  expenses of the Merger of $10,250,000 as follows:
     Non-compete  payments to certain officers  ($5,000,000);  professional fees
     ($2,500,000);   filing  fees  ($500,000);  and  other  ($2,250,000).  Other
     primarily represents severance payments and related benefits anticipated to
     be paid to identified  employees whose  employment will be terminated after
     the Merger in accordance with a restructuring plan to be adopted.


 (6) Represents   the   present   value   of   contingent  payments  aggregating
     $50,000,000   due   in  2000  and  2001  relating  to  the  First  American
     Acquisition,   which   payments   IHS   deems  probable.  See  "IHS  Recent
     Developments - First American Acquisition."



 (7) Represents  388,079 shares of RoTech Common Stock subject to put options at
     the sole discretion of the RoTech  stockholder at prices ranging from $8.75
     to $17.50 per share. The put options expire at various dates between May 1,
     1997 and April 30, 1998.  Because the put price is below the current market
     price of the RoTech Common Stock, IHS has assumed for purposes of these pro
     forma financial  statements that the put options will not be exercised and,
     therefore,  the  shares of IHS Common  Stock  issued in  exchange  for such
     RoTech Shares have not been classified as redeemable common stock, but have
     been  included  in  stockholders'  equity  for  purposes  of the pro  forma
     financial statements.



 (8) Represents the Merger  consideration  of  $486,949,000  (see note 3 above),
     less $14,000 allocated to Common stock and less RoTech's Additional paid-in
     capital  of  $127,403,000.  Other  adjustments  represent  eliminations  of
     RoTech's equity account balances.



 (9) Represents   additional   amortization   relating  to  goodwill  and  other
     intangibles  recorded  as a  result  of the  Merger,  amortized  using  the
     straight line method over 15-40 years as follows:




<TABLE>
<S>                                <C>
                    RoTech intangible assets  ......     $252,433,000
                    Acquisition adjustment .........      292,663,000
                                                         ------------
                                                         $545,096,000
                                                         ============
</TABLE>


<TABLE>
<CAPTION>
                                                                TWELVE MONTHS ENDED   SIX MONTHS ENDED
                                                                 JANUARY 31, 1997     APRIL 30, 1997
                                                               --------------------- -----------------
<S>                                                            <C>                   <C>
        Amortization of covenants not to compete of $5,000,000
         - 15 year life   ....................................      $   334,000         $  167,000
        Amortization of goodwill for remainder - 40 year life.       13,502,000          6,751,000
                                                                    ------------        ----------
                                                                     13,836,000          6,918,000
        Less amortization of intangible assets recorded by
         RoTech  .............................................       11,853,000          7,591,000
                                                                    ------------        ----------
        Pro forma adjustment .................................      $ 1,983,000         $ (673,000)
                                                                    ============        ==========
</TABLE>

                                       80
<PAGE>

 (10) Represents  additional  interest on  borrowings  by IHS to repay  RoTech's
      credit facility and to repurchase the RoTech Debentures as follows:





<TABLE>
<CAPTION>
                                                               TWELVE MONTHS ENDED   SIX MONTHS ENDED
                                                                JANUARY 31, 1997     APRIL 30, 1997
                                                              --------------------- -----------------
<S>                                                           <C>                   <C>
        Credit facility:
         Average borrowings outstanding during the period    .    $ 85,290,000       $ 120,786,000
         IHS average borrowing rate during the period  ......             7.13%               7.23%
         Pro forma interest .................................     $  6,081,000       $   4,366,000
        RoTech Debentures:
         Average borrowings outstanding during period
          ($110,000,000 issued June 1, 1996)  ...............     $ 73,333,000       $ 110,000,000
         Pro forma interest .................................        5,229,000           3,977,000
                                                                  ------------       -------------
        Total pro forma interest  ...........................       11,310,000           8,343,000
         Less actual interest  ..............................        9,456,000           6,784,000
                                                                  ------------       -------------
        Pro forma adjustment   ..............................     $  1,854,000       $   1,559,000
                                                                  ============       =============
</TABLE>

(11) For IHS consists  primarily of (i) a gain of $34,298,000  from IHS' sale of
     its pharmacy  division,  (ii) a loss of $8,497,000 from IHS' sale of shares
     in the ILC  Offering,  (iii) a  $7,825,000  loss on  write-off  of  accrued
     management fees and loans  resulting from IHS'  termination of its ten year
     contract,  entered into in September  1994,  to manage six  geriatric  care
     facilities  in the  State of  Washington  owned by All  Seasons  and (iv) a
     $3,519,000  exit  cost  resulting  from  IHS'  closure  of  redundant  home
     healthcare agencies.

(12) In 1996  IHS  recorded  a loss  on  extinguishment  of  debt of  $2,327,000
     relating primarily to the write-off of deferred financing costs. Such loss,
     reduced by the related  income tax effect of $896,000,  is presented in the
     statement  of  operations  for  the  year  ended  December  31,  1996 as an
     extraordinary loss of $1,431,000.

(13) Fully-diluted  earnings per share is computed based on the weighted average
     number of common  and  common  equivalent  shares  outstanding  during  the
     periods   assuming  the  dilution   resulting  from  the  issuance  of  the
     outstanding  options  and  warrants at the  end-of-period  price per share,
     rather than the weighted average price for the period,  and the issuance of
     common  stock  upon the  assumed  conversion  of  convertible  subordinated
     debentures.   An  adjustment  for  interest  expense  and  amortization  of
     underwriting  costs  related to such  debentures  is added,  net of tax, to
     earnings for the purpose of calculating  fully-diluted  earnings per share.
     Pro forma weighted  average shares were calculated based upon IHS' weighted
     average  shares plus  RoTech's  weighted  average  shares  adjusted for the
     Exchange Ratio of .5806.


(14) Consists  primarily of (i) a gain of  $7,578,000  realized on the shares of
     Capstone  Pharmacy  Services,  Inc.  common stock  received in the Pharmacy
     Sale, (ii) the write-off of $6,553,000 of accounting, legal and other costs
     resulting from the proposed Coram Merger  Transaction and (iii) the payment
     to Coram of $21,000,000 in connection  with the termination of the proposed
     Coram Merger Transaction.


(15) During  the  six  months  ended  June  30,  1997,  IHS  recorded  a loss on
     extinguishment  of  debt of  $29,784,000,  representing  approximately  (i)
     $23,554,000  of cash  payments for premium and consent fees relating to the
     early  extinguishment  of $214,868,000  aggregate  principal amount of IHS'
     senior  subordinated  notes and (ii) $6,230,000 of deferred financing costs
     written-off in connection with the early  extinguishment of such debt. Such
     loss, reduced by the related income tax effect of $11,616,000, is presented
     in the statement of operations for the six months ended June 30, 1997 as an
     extraordinary  loss  of  $18,168,000.   See  "IHS  Recent   Developments  -
     Repurchase  of  9  5/8%  Senior  Subordinated  Notes  and  10  3/4%  Senior
     Subordinated Notes."


                                       81
<PAGE>

PRO FORMA FINANCIAL INFORMATION FOR THE COMBINED COMPANY AND
OTHER ACQUISITIONS AND DIVESTITURES



     The following  unaudited pro forma  statements of operations give effect to
(i) the Merger,  which is expected to be accounted for as a purchase  (including
the effect of the refinancing of certain RoTech  indebtedness in connection with
the Merger),  assuming a price per share of IHS Common Stock of $34.69 (based on
the  closing  price of IHS  Common  Stock on  August  11,  1997)  and  using the
24,177,000  shares  of  RoTech  Common  Stock  outstanding  at  April  30,  1997
(including  388,079 shares of redeemable common stock),  (ii) the sale by IHS of
its pharmacy division in July 1996 (the "Pharmacy Sale"),  (iii) the sale by IHS
of a majority  interest in its assisted  living services  subsidiary  ("ILC") in
October 1996 (the "ILC Offering"), (iv) the acquisition by IHS of First American
in October 1996 (the "First American  Acquisition"),  and (v) the acquisition by
IHS of (a) Vintage  Health Care Center,  a skilled  nursing and assisted  living
facility,  in January 1996 (the  "Vintage  Acquisition"),  (b) Rehab  Management
Systems,  Inc., an outpatient  rehabilitation  company,  in March 1996 (the "RMS
Acquisition"),  (c) Hospice of the Great Lakes, Inc., a hospice company,  in May
1996 (the "Hospice Acquisition"),  (d) J.R. Rehab Associates, Inc., an inpatient
and  outpatient   rehabilitation   center,  in  August  1996  (the  "J.R.  Rehab
Acquisition"),  (e) Extendicare of Tennessee,  Inc., a home health  company,  in
August  1996  (the  "Extendicare  Acquisition"),  (f)  Edgewater  Home  Infusion
Services,  Inc.,  a home  infusion  company,  in  August  1996  (the  "Edgewater
Acquisition"),  (g) Century Home Services, Inc., a home health services company,
in September 1996 (the "Century Acquisition"),  (h) Signature Home Care, Inc., a
home health company, in September 1996 (the "Signature Acquisition"),  (i) Mediq
Mobile X-Ray Services, Inc., a mobile diagnostics company, in November 1996 (the
"Mediq Acquisition"), (j) Total Rehab Services, LLC and Total Rehab Services 02,
LLC, providers of contract  rehabilitation and respiratory services, in November
1996 (the "Total Rehab  Acquisition"),  (k) Lifeway Inc., a physician management
and disease management  company,  in November 1996 (the "Lifeway  Acquisition"),
(l) In-Home  Health  Care,  Inc.,  a home health  company,  in January 1997 (the
"In-Home  Acquisition"),  (m) Portable  X-Ray Labs,  Inc., a mobile  diagnostics
company,  in  February  1997 (the  "Portable  X-Ray  Acquisition"),  (n) Coastal
Rehabilitation,  Inc., an inpatient  rehabilitation  company, in April 1997 (the
"Coastal Acquisition"), (o) Health Care Industries, Inc., a home health company,
in June 1997 (the "Health Care Industries Acquisition"), and (p) Rehab Dynamics,
Inc. and Restorative Therapy, Ltd., related contract  rehabilitation  companies,
in June 1997 (the "Rehab  Dynamics  Acquisition").  The pro forma  statements of
operations  for the year ended  December  31, 1996 and the six months ended June
30, 1997 were prepared as if all of the foregoing  transactions were consummated
on January 1, 1996.

     No pro forma balance sheet is presented because the transactions  described
in the preceding paragraph (other than the Merger) were all consummated prior to
June 30, 1997 and are  therefore  reflected  in the actual June 30, 1997 balance
sheet.  The pro forma balance sheet at June 30, 1997 giving effect to the Merger
is set forth under "- Pro Forma Financial Information for the Combined Company."
The  Pro  Forma  Financial  Information  for  the  Combined  Company  and  Other
Acquisitions and Divestitures does not give pro forma effect to (i) acquisitions
consummated  by RoTech  during the year  ended  July 31,  1997 (see "- Pro Forma
Financial Information for RoTech"),  (ii) the Proposed  Acquisitions,  (iii) the
New  Credit  Facility,  (iv)  the  sale  of IHS'  remaining  37.3%  interest  in
Integrated Living  Communities,  Inc., (v) the acquisition of the assets of five
small ancillary  service  businesses  during the six months ended June 30, 1997,
(vi)  the  acquisition  of  three  home  healthcare  companies  and  one  mobile
diagnostic  company in August 1997 or (vii) the sale of the 9 1/4% Senior  Notes
in September 1997.

     The pro forma adjustments are based upon available  information and certain
assumptions  that management  believes are  reasonable.  The unaudited pro forma
financial  information  set forth below is not  necessarily  indicative  of IHS'
financial  position  or the  results  of  operations  that  actually  would have
occurred  if the  transactions  had been  consummated  on the  dates  shown.  In
addition, they are not intended to be a projection of results of operations that
may be  obtained  by IHS  in the  future.  The  unaudited  pro  forma  financial
information  should  be read in  conjunction  with  the  consolidated  financial
statements  and related  notes thereto  incorporated  by reference in this Joint
Proxy Statement/Prospectus,  the selected consolidated historical financial data
and related notes thereto, the unaudited pro forma financial information for the
combined  company  and  related  notes  thereto,  and the  unaudited  pro  forma
financial information for RoTech and related notes thereto,  appearing elsewhere
in  this  Joint  Proxy  Statement/Prospectus.   See  "Incorporation  of  Certain
Documents by Reference," "Summary of Joint Proxy  Statement/Prospectus  Selected
Historical  Financial  Information," "- Pro Forma Financial  Information for the
Combined Company" and "- Pro Forma Financial Information for RoTech." 

                                       82
<PAGE>

                       INTEGRATED HEALTH SERVICES, INC.
                       PRO FORMA STATEMENT OF OPERATIONS
                          YEAR ENDED DECEMBER 31, 1996
                                  (UNAUDITED)

                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)



<TABLE>
<CAPTION>
                                                   IHS            PHARMACY               ILC
                                              HISTORICAL(1)    ADJUSTMENTS(2)      ADJUSTMENTS(3)
                                             --------------- ------------------- -------------------
<S>                                          <C>             <C>                 <C>
Net revenues:
 Basic medical services   ..................  $   389,773                         $    (16,101)(a)
 Specialty medical services  ...............      999,209     $    (52,331)(a)
 Management services and other  ............       45,713                               (1,020)(a)
                                              -----------     ------------        ------------
 Total revenues  ...........................    1,434,695          (52,331)            (17,121)
Costs and expenses:
 Operating, general and administra-
 tive expenses                                  1,154,924          (43,279)(a)         (12,453)(a)
 Depreciation and amortization  ............       41,681           (1,785)(a)            (833)(a)
 Rent   ....................................       77,785             (838)(a)          (1,885)(a)
 Interest, net   ...........................       64,110           (3,817)(b)            (963)(b)
 Non-recurring charges (income) ............      (14,457)          34,298 (c)          (8,497)(d)
                                              -----------     ------------        ------------
 Total costs and expenses ..................    1,324,043          (15,421)            (24,631)
 Earnings (loss) before equity in
 earnings (loss) of affiliates, in-
 come taxes and extraordinary
 items  ....................................      110,652          (36,910)              7,510
Equity in earnings (loss) of affiliates     .         828                                  722
                                              -----------     ------------        ------------
 Earnings (loss) before income
 taxes and extraordinary items  ............      111,480     $    (36,910)       $      8,232
                                                              ============        ============
Federal and state income taxes  ............       63,715
                                              -----------
 Earnings before extraordinary
 items  ....................................  $    47,765
                                              ===========
Earnings before extraordinary items per common
 share:
 Primary   .................................  $      2.03
 Fully-diluted   ...........................         1.82
                                              ===========
Weighted average shares
 Primary   .................................       23,574
 Fully-diluted   ...........................       31,653
                                              ===========

<PAGE>

<CAPTION>
                                                                    FIRST            OTHER            OTHER         PRO FORMA
                                              FIRST AMERICAN      AMERICAN       ACQUISITIONS     ACQUISITIONS       BEFORE
                                              HISTORICAL(4)      ADJUSTMENTS     HISTORICAL(5)     ADJUSTMENTS       ROTECH
                                             ---------------- ----------------- --------------- ----------------- -------------
<S>                                          <C>              <C>               <C>             <C>               <C>
Net revenues:
 Basic medical services   ..................   $        -                         $     292                         $   373,964
 Specialty medical services  ...............      387,547                           173,463                           1,507,888
 Management services and other  ............        3,115                                 3                              47,811
                                             ----------------                   ---------------                   -------------
 Total revenues  ...........................      390,662                           173,758                           1,929,663
Costs and expenses:
 Operating, general and administra-
 tive expenses                                    406,800                           168,766                           1,674,758
 Depreciation and amortization  ............        5,439      $    4,501 (e)         2,087      $    2,381 (e)          53,471
 Rent   ....................................            -                             3,474                              78,536
 Interest, net   ...........................        6,208           9,314 (b)         3,402           3,053 (b)          81,307
 Non-recurring charges (income) ............        3,468                                 -                              14,812
                                             ---------------- ----------------- --------------- ----------------- -------------
 Total costs and expenses ..................      421,915          13,815           177,729           5,434           1,902,884
 Earnings (loss) before equity in
 earnings (loss) of affiliates, in-
 come taxes and extraordinary
 items  ....................................      (31,253)        (13,815)           (3,971)         (5,434)             26,779
Equity in earnings (loss) of affiliates              (671)                            1,032                               1,911
                                             ---------------- ----------------- --------------- ----------------- -------------
 Earnings (loss) before income
 taxes and extraordinary items  ............   $  (31,924)     $  (13,815)        $  (2,939)     $   (5,434)             28,690
                                             ================ ================= =============== ================
Federal and state income taxes  ............                                                                             17,449
                                                                                                                   ------------
 Earnings before extraordinary
 items  ....................................                                                                        $    11,241
                                                                                                                   ============
Earnings before extraordinary items per common share:
 Primary   .................................                                                                        $      0.46
 Fully-diluted   ...........................                                                                               0.65
                                                                                                                   ============
Weighted average shares
 Primary   .................................                                                            922              24,496
 Fully-diluted   ...........................                                                            922              32,575
                                                                                                 ==========        ============



<CAPTION>
                                               ROTECH*         ROTECH         PRO FORMA
                                              HISTORICAL     ADJUSTMENTS     CONSOLIDATED
                                             ------------ ----------------- -------------
<S>                                          <C>          <C>               <C>
Net revenues:
 Basic medical services   ..................   $       -                      $   373,964
 Specialty medical services  ...............     344,590                        1,852,478
 Management services and other  ............           -                           47,811
                                             ------------                   -------------
 Total revenues  ...........................     344,590                        2,274,253
Costs and expenses:
 Operating, general and administra-
 tive expenses                                   258,891                        1,933,649
 Depreciation and amortization  ............      36,074   $    1,983 (e)          91,528
 Rent   ....................................           -                           78,536
 Interest, net   ...........................       9,456        1,854 (f)          92,617
 Non-recurring charges (income) ............           -                           14,812
                                             ------------ ----------------- -------------
 Total costs and expenses ..................     304,421        3,837           2,211,142
 Earnings (loss) before equity in
 earnings (loss) of affiliates, in-
 come taxes and extraordinary
 items  ....................................      40,169       (3,837)             63,111
Equity in earnings (loss) of affiliates                -                            1,911
                                             ------------ ----------------- -------------
 Earnings (loss) before income
 taxes and extraordinary items  ............   $  40,169   $   (3,837)             65,022
                                              ==========   ==========
Federal and state income taxes  ............                                       33,983
                                                                             ------------
 Earnings before extraordinary
 items  ....................................                                  $    31,039
                                                                             ============
Earnings before extraordinary items per common share:
 Primary   .................................                                  $      0.79
 Fully-diluted   ...........................                                         0.86
                                                                             ============
Weighted average shares
 Primary   .................................      25,513      (10,700)             39,309
 Fully-diluted   ...........................      30,063      (15,041)             47,597
                                              ==========   ==========        ============
</TABLE>

- ----------

* 12 months ended January 31, 1997

                                       83
<PAGE>

                       INTEGRATED HEALTH SERVICES, INC.
                       PRO FORMA STATEMENT OF OPERATIONS
                         SIX MONTHS ENDED JUNE 30, 1997
                                  (UNAUDITED)

                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)




<TABLE>
<CAPTION>
                                                                                             OTHER
                                                             IHS           PHARMACY      ACQUISITIONS
                                                        HISTORICAL(6)   ADJUSTMENTS(2)   HISTORICAL(7)
                                                       --------------- ---------------- ---------------
<S>                                                    <C>             <C>              <C>
Net revenues:
 Basic medical services ..............................    $176,810                         $      -
 Specialty medical services   ........................     722,802                           18,379
 Management services and other   .....................      19,304
                                                       ---------------
 Total revenues   ....................................     918,916                           18,379
Costs and expenses:
Operating, general and administrative expenses  ......     727,299                           15,649
Depreciation and amortization ........................      30,844                              135
Rent  ................................................      49,795                              547
Interest, net  .......................................      44,645                               88
Non-recurring charges, net ...........................      20,047            7,578 (c)           -
                                                       --------------- ---------------- ---------------
 Total costs and expenses  ...........................     872,630            7,578          16,419
 Earnings (loss) before equity in earnings of affili-
 ates, income taxes and extraordinary items                 46,286           (7,578)          1,960
Equity in earnings of affiliates .....................          98                                -
                                                       --------------- ---------------- ---------------
 Earnings (loss) before income taxes and
 extraordinary items    ..............................      46,384       $   (7,578)       $  1,960
                                                                       ================ ===============
Federal and state income taxes   .....................      18,090
                                                       ---------------
 Earnings before extraordinary items   ...............    $ 28,294
                                                       ===============
Earnings before extraordinary items per common
 share:  .............................................
 Primary .............................................    $   1.05
 Fully-diluted .......................................        0.92
                                                       ===============
Weighted average shares:   ...........................
 Primary .............................................      26,963
 Fully-diluted .......................................      36,233
                                                       ===============

<PAGE>


<CAPTION>
                                                           OTHER       PRO FORMA
                                                        ACQUISITIONS    BEFORE      ROTECH          ROTECH        PRO FORMA
                                                        ADJUSTMENTS     ROTECH    HISTORICAL*    ADJUSTMENTS     CONSOLIDATED
                                                       -------------- ---------- ------------- ---------------- -------------
<S>                                                    <C>            <C>        <C>           <C>              <C>
Net revenues:
 Basic medical services ..............................                  $176,810   $       -                      $   176,810
 Specialty medical services   ........................                   741,181     207,266                          948,447
 Management services and other   .....................                    19,304           -                           19,304
                                                                      ---------- -------------                  -------------
 Total revenues   ....................................                   937,295     207,266                        1,144,561
Costs and expenses:
Operating, general and administrative expenses  ......                   742,948     154,185                          897,133
Depreciation and amortization ........................  $    306 (e)      31,285      21,334   $      (673)(e)         51,946
Rent  ................................................                    50,342           -                           50,342
Interest, net  .......................................       399 (b)      45,132       6,784         1,559 (f)         53,475
Non-recurring charges, net ...........................                    27,625           -                           27,625
                                                       -------------- ---------- ------------- ---------------- -------------
 Total costs and expenses  ...........................       705         897,332     182,303           886          1,080,521
 Earnings (loss) before equity in earnings of affili-
 ates, income taxes and extraordinary items                 (705)         39,963      24,963          (886)            64,040
Equity in earnings of affiliates .....................                        98           -                               98
                                                       -------------- ---------- ------------- ---------------- -------------
 Earnings (loss) before income taxes and
 extraordinary items    ..............................  $   (705)         40,061   $  24,963   $      (886)            64,138
                                                       ==============            ============= ================
Federal and state income taxes   .....................                    18,844                                       29,323
                                                                      ----------                                -------------
 Earnings before extraordinary items   ...............                  $ 21,217                                  $    34,815
                                                                      ==========                                =============
Earnings before extraordinary items per common
 share:  .............................................
 Primary .............................................                  $   0.78                                  $      0.82
 Fully-diluted .......................................                      0.71                                         0.76
                                                                      ==========                                =============
Weighted average shares:   ...........................
 Primary .............................................       305          27,268      26,506       (11,117)            42,657
 Fully-diluted .......................................       305          36,538      31,069       (15,463)            52,144
                                                       ============== ========== ============= ================ =============
</TABLE>


- ----------

* Six Months ended April 30, 1997.

                                       84
<PAGE>

           NOTES TO PRO FORMA FINANCIAL INFORMATION FOR THE COMBINED
                 COMPANY AND OTHER ACQUISTIONS AND DIVESTITURES


(1) Includes the results of operations of (i) its pharmacy division through July
    30, 1996, the date of the Pharmacy Sale,  (ii) its assisted  living services
    subsidiary through October 9, 1996, the date of closing of the ILC Offering,
    (iii) First American from October 17, 1996, the date of closing of the First
    American Acquisition, (iv) Vintage Health Care Center from January 29, 1996,
    the  date of  closing  of the  Vintage  Acquisition,  (v)  Rehab  Management
    Systems,  Inc.  from  March  19,  1996,  the  date  of  closing  of the  RMS
    Acquisition,  (vi) Hospice of the Great Lakes,  Inc.  from May 1, 1996,  the
    date of closing of the Hospice  Acquisition,  (vii) J.R.  Rehab  Associates,
    Inc. from August 1, 1996, the date of closing of the J.R. Rehab Acquisition,
    (viii)  Extendicare  of Tennessee,  Inc.  from August 12, 1996,  the date of
    closing  of  the  Extendicare  Acquisition,  (ix)  Edgewater  Home  Infusion
    Services,  Inc.  from August 19, 1996,  the date of closing of the Edgewater
    Acquisition,  (x) Century Home  Services,  Inc. from September 13, 1996, the
    date of closing of the Century  Acquisition,  (xi) Signature Home Care, Inc.
    from September 25, 1996,  the date of closing of the Signature  Acquisition,
    (xii) Mediq Mobile X-Ray  Services,  Inc. from November 7, 1996, the date of
    closing of the Mediq Acquisition, (xiii) Total Rehab Services, LLC and Total
    Rehab  Services  02, LLC from  November 8, 1996,  the date of closing of the
    Total Rehab  Acquisition  and (xiv) Lifeway Inc. from November 8, 1996,  the
    date of closing of the Lifeway  Acquisition.  Also  includes from October 9,
    1996 IHS' equity in ILC's earnings. See notes 2, 3, 4 and 5 below.

(2) In July 1996, IHS sold its pharmacy division to Capstone Pharmacy  Services,
    Inc.  ("Capstone") for a purchase price of $150 million,  consisting of cash
    of $125  million and shares of Capstone  common  stock having a value of $25
    million. IHS used the net proceeds of the sale to repay borrowings under its
    revolving credit facility. IHS had a pre-tax gain of $34.3 million.  Because
    IHS'  investment  in the pharmacy  division had a very small tax basis,  the
    taxable  gain on the sale  significantly  exceeded  the  gain for  financial
    reporting purposes,  thereby resulting in a disproportionately higher income
    tax provision  related to the sale. IHS' investment in Capstone common stock
    of $14.6 million was recorded at carryover cost and classified as securities
    available  for sale. In 1997,  IHS  recognized  the  remaining  gain of $7.6
    million when restrictions on transferability of such shares were removed.

(3) On October 9, 1996, Integrated Living Communities, Inc. ("ILC"), at the time
    a wholly-owned  subsidiary of IHS which provides assisted living and related
    services  to the private pay elderly  market,  completed  an initial  public
    offering of ILC common stock.  IHS sold 1,400,000 shares of ILC common stock
    in  the  offering,   for  which  it  received   aggregate  net  proceeds  of
    approximately  $10.4  million.  In  addition,  ILC used  approximately  $7.4
    million of the net proceeds received by it to repay outstanding indebtedness
    to IHS. IHS used the net proceeds  from the sale to repay  borrowings  under
    its credit  facility.  IHS  recorded a pre-tax  loss of  approximately  $8.5
    million in the fourth  quarter of 1996 as a result of this  transaction.  On
    July 2, 1997, IHS sold the remaining 2,497,900 shares of ILC common stock it
    owned,  representing  37.3% of the outstanding ILC common stock,  for $11.50
    per share in a cash tender offer (the "ILC  Sale").  IHS expects to record a
    gain of approximately $4.0 million from the ILC Sale in the third quarter of
    1997. The pro forma effect of the ILC Sale is not reflected in the pro forma
    statements of operations.

(4) In  October  1996,  IHS acquired through merger First American. The purchase
    price  was  $154.1  million  in  cash,  which  IHS borrowed under its credit
    facility,  plus  contingent  payments  of  up  to  $155  million  payable at
    various  times  through  2004. See "IHS Recent Developments - First American
    Acquisition."


(5) Consists of the following acquisitions:



     Vintage  Acquisition.  In January 1996,  IHS purchased  Vintage Health Care
     Center,  a 220 bed skilled  nursing and assisted living facility in Denton,
     Texas,  for $6.9  million.  A condominium  interest in the assisted  living
     portion of this facility (valued at $3.5 million) was contributed to ILC on
     June 1, 1996.


     RMS Acquisition. In March 1996, IHS acquired all of the outstanding capital
     stock of Rehab Management Systems, Inc. ("RMS"),  which operates outpatient
     rehabilitation  therapy  clinics in central  Florida.  RMS also managed one
     therapy and one physician clinic. Total purchase price was

                                       85
<PAGE>

   $10.0 million,  including $8.0 million  representing  the issuance of 385,542
   shares of IHS  Common  Stock.  In  addition,  IHS  incurred  direct  costs of
   acquisition of $2.9 million.  Total  goodwill at the date of acquisition  was
   $12.8 million.


    Hospice  of  the  Great  Lakes  Acquisition.   In  May  1996,  IHS  acquired
   substantially  all the assets of Hospice of the Great Lakes,  Inc., a hospice
   company  in  Northbrook,  Illinois.  Total  purchase  price was $8.2  million
   representing the issuance of 304,822 shares of IHS Common Stock. IHS incurred
   direct costs of  acquisition  of $1.0 million.  Total goodwill at the date of
   acquisition aggregated $9.0 million.

    J.R.   Rehab   Acquisition.   In  August  1996,  IHS  acquired  all  of  the
   outstanding  capital  stock  of J.R. Rehab Associates, Inc., an inpatient and
   outpatient  rehabilitation  clinic  in  Mooresville,  North  Carolina.  Total
   purchase  price  was approximately $2.1 million. IHS incurred direct costs of
   acquisition   of   $200,000.  Total  goodwill  at  the  date  of  acquisition
   aggregated $3.2 million.

    Extendicare  Acquisition.  In August 1996, IHS acquired substantially all of
   the assets of Extendicare of Tennessee,  Inc., a home  healthcare  company in
   Memphis,  Tennessee. Total purchase price was approximately $3.4 million. IHS
   incurred direct costs of acquisition of $200,000.  Total goodwill at the date
   of acquisition aggregated $1.9 million.

    Edgewater  Acquisition.  In August 1996, IHS acquired  substantially all the
   assets of Edgewater Home Infusion Services,  Inc., a home infusion company in
   Miami,  Florida.  Total purchase price was  approximately  $8.0 million.  IHS
   incurred direct costs of acquisition of $300,000.  Total goodwill at the date
   of acquisition aggregated $7.7 million.


    Century  Acquisition.  In August 1996,  IHS acquired  substantially  all the
   assets of  Century  Health  Services,  Inc.,  a home  healthcare  company  in
   Murfreesboro, Tennessee. Total purchase price was approximately $2.4 million.
   In addition, IHS used borrowings under its revolving credit facility to repay
   approximately $1.6 million of debt of Century assumed in the acquisition. IHS
   incurred direct costs of acquisition of $200,000.  Total goodwill at the date
   of acquisition aggregated $12.1 million.

    Signature   Acquisition.   In  September  1996,  IHS  acquired  all  of  the
   outstanding  capital stock of Signature Home Care,  Inc., a home care company
   in Dallas,  Texas.  Total  purchase  price was  approximately  $9.2  million,
   including  $4.7 million  representing  the issuance of 196,374  shares of IHS
   Common Stock.  In addition,  IHS used borrowings  under its revolving  credit
   facility  to repay  approximately  $1.9  million  of  Signature's  debt.  IHS
   incurred  direct costs of acquisition of $2.5 million.  Total goodwill at the
   date of acquisition aggregated $21.1 million.

    Mediq Acquisition. In November 1996, IHS acquired the assets of Mediq Mobile
   X-Ray Services,  Inc., which provides mobile diagnostic  services.  The total
   purchase price was $10.1 million,  including  $5.2 million  representing  the
   issuance of 143,893  shares of IHS Common Stock (after  giving  effect to the
   return of 59,828  shares of its Common  Stock  because of an  increase in the
   share price of IHS Common  Stock  between  the date of issuance  and the date
   such shares were  registered for resale).  In addition,  IHS incurred  direct
   costs  of  acquisition  of  $5.5  million.  Total  goodwill  at the  date  of
   acquisition was $15.6 million.

    Total Rehab Acquisition.  In November 1996, IHS acquired the assets of Total
   Rehab Services,  LLC and Total Rehab Services 02, LLC, which provide contract
   rehabilitative  and respiratory  services.  The total purchase price was $8.0
   million,  including $2.7 million  representing the issuance of 106,559 shares
   of IHS Common Stock. In addition,  IHS repaid  approximately  $3.9 million of
   Total Rehab's debt. In addition,  IHS incurred direct costs of acquisition of
   $1.3 million. Total goodwill at the date of acquisition was $12.0 million.

    Lifeway  Acquisition.  In November 1996, IHS acquired all of the outstanding
   stock of Lifeway,  Inc.,  which  provides  physician  and disease  management
   services.  The total purchase price was $900,000 representing the issuance of
   38,502 shares of IHS's Common Stock.  IHS also issued 48,129 shares of Common
   Stock to Robert  Elkins,  Chairman  and Chief  Executive  Officer of IHS,  in
   payment of outstanding  loans of $1.1 million from Mr. Elkins to Lifeway.  In
   addition, IHS incurred direct costs of acquisition of $275,000.


                                       86
<PAGE>

    In-Home  Acquisition.  In January  1997,  IHS acquired  all the  outstanding
   capital stock of In-Home Health Care, Inc. ("In-Home"), a home health company
   in Salt Lake City, Utah. Total purchase price was $3.2 million.  IHS incurred
   direct  costs of  acquisition  of  $250,000.  Total  goodwill  at the date of
   acquisition aggregated $3.9 million.

    Portable X-Ray Acquisition. In February 1997, IHS acquired substantially all
   the  assets  of  Portable  X-Ray  Labs,  Inc.  ("Portable  X-Ray"),  a mobile
   diagnostics  company in Anaheim,  California.  Total  purchase price was $4.9
   million.  IHS incurred  direct costs of  acquisition  of $1.3 million.  Total
   goodwill at the date of acquisition aggregated $5.7 million.

    Coastal  Acquisition.  In  April  1997,  IHS  acquired substantially all the
   assets   of   Coastal   Rehabilitation,   Inc.   ("Coastal"),   an  inpatient
   rehabilitation  company  in Indian Harbour, Florida. Total purchase price was
   $1.3  million.  IHS  incurred  direct costs of acquisition of $200,000. Total
   goodwill at the date of acquisition aggregated $1.8 million.

    Health Care  Industries  Acquisition.  In June 1997,  IHS  acquired  all the
   outstanding  capital  stock of Health Care  Industries,  Inc.  ("Health  Care
   Industries"), a home health company in Florida. Total purchase price was $1.8
   million. IHS incurred direct costs of acquisition of $500,000. Total goodwill
   at the date of acquisition aggregated $2.5 million.

    Rehab  Dynamics  Acquisition.  In  June 1997, IHS acquired substantially all
   the   assets   of   Rehab   Dynamics,  Inc.  and  Restorative  Therapy,  Ltd.
   (collectively  "Rehab  Dynamics"),  a  contract rehab company. Total purchase
   price  was  $19.7  million, including $11.5 million representing the issuance
   of  322,472  shares  of  IHS  Common  Stock.  IHS  incurred  direct  costs of
   acquisition  of  $2.5  million.  Total  goodwill  at  the date of acquisition
   aggregated $21.5 million.

(6) Includes the results of operations from the respective months of acquisition
    as follows:  (i) In-Home  from January 10, 1997,  (ii)  Portable  X-Ray from
    February  5,  1997,  (iii)  Coastal  from April 7, 1997,  (iv)  Health  Care
    Industries from June 10, 1997, and (iv) Rehab Dynamics from June 20, 1997.


(7) Consists  of  the  In-Home  Acquisition, the Portable X-Ray Acquisition, the
    Coastal  Acquisition,  the  Health Care Industries Acquisition and the Rehab
    Dynamics Acquisition. See Note 5 above.

                               ----------------

For purposes of determining  the effects of the  acquisitions  and  divestitures
described  in Notes 1  through 7 above,  including  those  events  which are (i)
directly  attributable  to the  transaction,  (ii) expected to have a continuing
impact on IHS, and (iii)  factually  supportable,  the  following  estimates and
adjustments have been made: 

   (a)        Represents actual revenues and expenses of divisions sold.

                                       87
<PAGE>

   (b)        Represents  (reduction in) additional  interest expense  resulting
              from  (repayment)  borrowings under IHS' revolving credit facility
              to  finance  acquisitions  based on the  interest  rate  under the
              revolving  credit facility on the date of (repayment)  borrowings,
              as follows:



                          YEAR ENDED DECEMBER 31, 1996
                            (DOLLARS IN THOUSANDS)



<TABLE>
<CAPTION>
                                                               DEBT         MONTHS     INTEREST      INTEREST
                                                            (PROCEEDS)     IN 1996       RATE       ADJUSTMENT
                                                            ------------   ---------   ----------   -----------
<S>                                                         <C>            <C>         <C>          <C>
   Pharmacy .............................................    $ (91,000)       7.0      7.19%        $ (3,817)
   ILC Offering   .......................................      (17,851)       9.0      7.19%            (963)
   First American .......................................      165,000        9.5      7.13%           9,314
                                                             ---------       -----     ------       --------
   Other Acquisitions
      In-Home Health ....................................        3,200       12.0      7.38%             236
      Portable X-Ray ....................................        4,900       12.0      7.25%             355
      Coastal  ..........................................        1,250       12.0      7.19%              90
      Health Care Industries  ...........................        1,825       12.0      7.19%             131
      Rehab Dynamics ....................................        8,203       12.0      7.19%             590
      Total Rehab .......................................        5,300       10.0      7.13%             315
      Mediq .............................................        4,942       10.0      7.13%             294
      Century  ..........................................        2,390        8.5      7.25%             123
      Signature   .......................................        4,519        9.0      7.19%             244
      Edgewater   .......................................        7,974        7.5      7.25%             361
      Extendicare .......................................        3,410        7.5      7.25%             155
      J.R. Rehab  .......................................        2,100        7.0      7.25%              89
      RMS   .............................................        2,000        2.5      6.88%              29
      Vintage  ..........................................        6,932        1.0      7.06%              41
                                                             ---------                              --------
      Total Other .......................................       58,945                                 3,053
   Total    .............................................    $ 115,094                 7.10%(1)     $  7,587
                                                             =========                              ========
      Effect of 1/8% reduction in interest expense ......    $ 115,094                 6.98%(1)     $  7,433
      Effect of 1/8% increase in interest expense  ......    $ 115,094                 7.23%(1)     $  7,699
</TABLE>

- ----------


(1) Percentage is weighted average based on amount (repaid) borrowed.




                         SIX MONTHS ENDED JUNE 30, 1997
                            (DOLLARS IN THOUSANDS)



<TABLE>
<CAPTION>
                                                             DEBT         MONTHS     INTEREST      INTEREST
                                                          (PROCEEDS)     IN 1997       RATE       ADJUSTMENT
                                                          ------------   ---------   ----------   -----------
<S>                                                       <C>            <C>         <C>          <C>
   Other Acquisitions
      In-Home Health  .................................     $ 3,200          .5      7.38%        $  10
      Portable X-Ray  .................................       4,900         1.3      7.25%           37
      Coastal   .......................................       1,250         3.3      7.19%           24
      Health Care Industries   ........................       1,825         5.3      7.19%           57
      Rehab Dynamics  .................................       8,203         5.5      7.19%          271
                                                            --------                              -----
                                                            $19,378                  7.24%        $ 399
                                                            ========                              =====
   Effect of 1/8% reduction in interest expense  ......     $19,378                  7.11%(1)     $ 392
   Effect of 1/8% increase in interest expense   ......     $19,378                  7.36%(1)     $ 406
</TABLE>

- ----------


(1) Percentage is weighted average based on amount (repaid) borrowed.


   (c)          Represents  gain  on  the  sale  of  the  pharmacy  division  of
              $34,298,000   and   $7,578,000   recorded   in   1996   and  1997,
              respectively.

   (d)        Represents loss on sale of shares in the ILC Offering.

   (e)        Represents additional  amortization relating to goodwill and other
              intangibles  recorded  as a result of the  acquisition,  amortized
              using the straight line method over 15-40 years, as follows:



                                       88
<PAGE>

                         YEAR ENDED DECEMBER 31, 1996
                             (DOLLARS IN THOUSANDS)



<TABLE>
<CAPTION>
                                                                     LESS: PREVIOUSLY     ADJUSTED     MONTHS
                                                         ANNUAL          RECORDED          ANNUAL       IN
             COMPANY               GOODWILL    LIFE   AMORTIZATION     AMORTIZATION     AMORTIZATION   1996    ADJUSTMENT
- --------------------------------- ----------- ------ -------------- ------------------ -------------- ------- -----------
<S>                               <C>         <C>    <C>            <C>                <C>            <C>     <C>
   First American    ............   $ 227,406   40      $ 5,685        $       0          $ 5,685        9.5    $4,501
                                   ----------           --------       ----------         --------     -----    -------
   RoTech goodwill   ............     540,096   40       13,502          (11,853)           1,649       12.0     1,649
                                   ----------   --      --------       ----------         --------     -----    -------
   RoTech non-compete
    covenants  ..................       5,000   15          334                0              334       12.0       334
                                   ----------   --      --------       ----------         --------     -----    -------
   Other Acquisitions
     Lifeway   ..................           0   40            0                0                0       10.0         0
     Total Rehab  ...............      11,982   40          300                0              300       10.0       250
     Mediq  .....................      15,600   40          390                0              390       10.0       325
     Century   ..................      12,140   40          304               (5)             299        8.5       211
     Signature    ...............      21,122   40          528              (24)             504        9.0       378
     Edgewater    ...............       7,685   40          192               (1)             191        7.5       119
     Extendicare  ...............       1,945   40           49                0               49        7.5        30
     J.R. Rehab   ...............       3,159   40           79               (2)              77        7.0        45
     Hospice of Great Lakes   .         9,031   40          226               (2)             224        4.0        75
     RMS    .....................      12,832   40          321                0              321        2.5        67
     Vintage   ..................           0   40            0                0                0        1.0         0
     In Home Health  ............       3,856   40           96                0               96       12.0        96
     Portable X-Ray  ............       5,653   40          141                0              141       12.0       141
     Coastal   ..................       1,764   40           44                0               44       12.0        44
     Health Care Industries   ...       2,505   40           63                0               63       12.0        63
     Rehab Dynamics  ............      21,478   40          537                0              537       12.0       537
                                   ----------   --      --------       ----------         --------     -----    -------
                                      130,752             3,270              (34)           3,236                2,381
                                   ----------           --------       ----------         --------              -------
   Total    .....................   $ 903,254           $22,791        $ (11,887)         $10,904               $8,865
                                   ==========           ========       ==========         ========              =======
</TABLE>

                         SIX MONTHS ENDED JUNE 30, 1997
                            (DOLLARS IN THOUSANDS)






<TABLE>
<CAPTION>
                                                                    LESS: PREVIOUSLY    SIX MONTHS    MONTHS
                                                        ANNUAL          RECORDED         ADJUSTED      IN
            COMPANY               GOODWILL    LIFE   AMORTIZATION     AMORTIZATION     AMORTIZATION   1996    ADJUSTMENT
- -------------------------------- ----------- ------ -------------- ------------------ -------------- ------- -----------
<S>                              <C>         <C>    <C>            <C>                <C>            <C>     <C>
   RoTech goodwill  ............   $ 540,096   40      $ 6,751         $ (7,591)         $ (840)         6     $ (840)
                                  ----------   --      --------        --------          ------        ----    ------
   RoTech non-compete
    covenants ..................       5,000   15          167                0             167          6        167
                                  ----------   --      --------        --------          ------        ----    ------
   Other Acquisitions
     In Home Health ............       3,856   40           48                0              48         .5          4
     Portable X-Ray ............       5,653   40           71                0              71        1.3         15
     Coastal  ..................       1,764   40           22                0              22        3.3         12
     Health Care Industries  ...       2,505   40           32                0              32        5.3         28
     Rehab Dynamics ............      21,478   40          269                0             269        5.5        247
                                  ----------   --      --------        --------          ------        ----    ------
                                      35,256               442                0             442                   306
                                  ----------           --------        --------          ------                ------
   Total   .....................   $ 580,352           $ 7,360         $ (7,591)         $ (231)               $ (367)
                                  ==========           ========        ========          ======                ======
</TABLE>

<PAGE>
   (f)        Represents  additional  interest  on  borrowings  by IHS to  repay
              RoTech's credit  facility and to repurchase the RoTech  Debentures
              as follows:





<TABLE>
<CAPTION>
                                                               TWELVE MONTHS ENDED   SIX MONTHS ENDED
                                                                JANUARY 31, 1997     APRIL 30, 1997
                                                              --------------------- -----------------
<S>                                                           <C>                   <C>
        Credit facility:
         Average borrowings outstanding during the period    .    $ 85,290,000       $ 120,786,000
         IHS average borrowing rate during the period  ......             7.13%               7.23%
         Pro forma interest .................................     $  6,081,000       $   4,366,000
        RoTech Debentures:
         Average borrowings outstanding during period
          ($110,000,000 issued June 1, 1996)  ...............     $ 73,333,000       $ 110,000,000
         Pro forma interest .................................        5,229,000           3,977,000
                                                                  ------------       -------------
        Total pro forma interest  ...........................       11,310,000           8,343,000
         Less actual interest  ..............................        9,456,000           6,784,000
                                                                  ------------       -------------
        Pro forma adjustment   ..............................     $  1,854,000       $   1,559,000
                                                                  ============       =============
</TABLE>

                                       89
<PAGE>

PRO FORMA FINANCIAL INFORMATION FOR ROTECH

     The pro forma condensed  combined statement of income for the twelve months
ended July 31,  1996 has been  prepared to  illustrate  the  estimated  combined
effects of the various  Agreements  of  Purchase  and Sale  ("Agreements")  upon
RoTech for those acquisition transactions consummated between August 1, 1995 and
July 31, 1997. The pro forma condensed  combined statement of income was derived
by combining RoTech's historical statement of income for the year ended July 31,
1996 and the unaudited historical  statements of income of the acquired entities
for a 12 month period ending within 90 days of RoTech's fiscal year end.

     The pro forma condensed  combined interim  statement of income for the nine
months ended April 30, 1997 was derived by combining  RoTech's unaudited interim
historical  statement of income for the nine months ended April 30, 1997 and the
unaudited interim  historical  statements of income of the acquired entities for
the period prior to their  respective  inclusion in RoTech's  unaudited  interim
historical statement of income for the nine months ended April 30, 1997.

     The pro forma condensed  combined  statements of income were prepared as if
the  acquisitions  had  occurred  on the  first  day of the  respective  periods
presented.  The pro forma condensed combined  statements of income presented are
not necessarily indicative of the results of operations that might have occurred
had such  transactions been completed as of the date specified or of the results
of operations of RoTech and its subsidiaries for any future period.

     The pro  forma  balance  sheet at April  30,  1997 was  prepared  as if the
entities  acquired  during the period from May 1, 1997 to July 31, 1997 were all
acquired as of April 30, 1997.

     The  operations of any entities  acquired  subsequent to April 30, 1997 are
not  included in RoTech's  historical  interim  statement of income as presented
herein. The net assets of any entities acquired subsequent to April 30, 1997 are
not included in RoTech's historical balance sheet as of April 30, 1997.

     No changes in operating  revenue and expenses have been made to reflect the
results  of any  modification  to  operations  that might have been made had the
Agreements  been  consummated  on the  aforesaid  assumed  effective  dates  for
purposes of  presenting  pro forma  results.  The pro forma  condensed  combined
statements of income include  amortization  of goodwill as if the Agreements had
been completed on the assumed effective date referred to above.

     The pro forma condensed combined statements of income, which should be read
in conjunction with the audited  consolidated  financial  statements and related
notes thereto, were prepared in accordance with the following principles:

   (a)  Amortization on intangibles  recorded in the combined  acquisitions  was
        amortized over various lives ranging from 5 to 25 years.

   (b)  Additional  interest  expense  related  to  borrowings  for cash paid to
        acquire  combined  entities was assumed borrowed on the first day of the
        respective period presented.

   (c)  Adjustment to income tax expense  relating to the net income as adjusted
        for the  combined  acquired  entities was  calculated  on the basis that
        operations of the consolidated  company could be combined as one company
        for federal  income tax purposes at the actual  historical  rate for the
        period.

   (d)  Additional  shares  of  RoTech  Common  Stock  issued  pursuant  to  the
        Agreements was assumed issued on the first day of the respective periods
        presented.

     The  pro  forma   financial   statements   give  effect  to  the  following
acquisitions:

     Hooks Acquisition.  In October 1995, RoTech purchased  substantially all of
the assets of Revco Home Health  Care  Centers,  Inc.  (also known as Hooks Home
Health  Care),  a  respiratory  and durable  medical  equipment  company with 32
locations in Indiana,  Ohio, Kentucky,  Illinois and Tennessee.  The acquisition
price was $10.4  million in cash and  goodwill  at the date of  acquisition  was
$969,000.


                                       90
<PAGE>

     Rhema Acquisition.  In January 1996, RoTech acquired all of the outstanding
shares of common capital stock of Rhema, Inc., a respiratory and durable medical
equipment company located in Irving, Texas, for $2.5 million in cash and 218,182
shares of RoTech  Common  Stock.  Goodwill at the date of  acquisition  was $3.4
million.

     Roth Medical  Acquisition.  In February  1996,  RoTech  acquired all of the
outstanding  shares of common  capital stock of Roth Medical Inc., a respiratory
and durable medical equipment company with three locations in Colorado, for $5.3
million in cash. Goodwill at the date of acquisition was $2.8 million.

     RHO  Medical  Acquisition.  In  April  1996,  RoTech  acquired  all  of the
outstanding  shares of common capital RHO Medical  Equipment also known as Wound
Management  Services,  a wound care  company in Winter  Park  Florida,  for $3.2
million in cash and 108,108 shares of RoTech Common Stock.  Goodwill at the date
of acquisition was $2 million.

     Big  B, Inc. Acquisition. In March 1997, RoTech purchased substantially all
the  assets  of  Big  B,  Inc.  d/b/a Alabama Medical, a respiratory and durable
medical  equipment  company  with  9  locations in Georgia and Alabama, for $5.3
million in cash. Goodwill at the date of acquisition was $783,000.

     Great Lakes Acquisition.  In April 1997, RoTech purchased substantially all
the assets of Great Lakes Home Medical,  Inc., a respiratory and durable medical
equipment company with 9 locations in Michigan,  Wisconsin and Florida, for $5.8
million in cash. Goodwill at the date of acquisition was $5.0 million.

     First Care  Acquisition.  In May 1997, RoTech purchased First Care, Inc., a
respiratory and durable medical equipment company in Wichita and Pratt,  Kansas,
for $8.0 million in cash. Goodwill at the date of acquisition was $6.6 million.


     Cambria  Acquisition.  In May 1997, RoTech purchased  substantially all the
assets of Cambria  Medical Supply,  a respiratory and durable medical  equipment
company with 4 locations in  Pennsylvania,  for $6.8 million in cash and 190,477
shares of RoTech  Common  Stock.  Goodwill at the date of  acquisition  was $5.1
million.


     Other Acquisitions.  In August 1996 through July 31, 1997, RoTech completed
an  aggregate  of 91 other  acquisition  transactions  of  respiratory,  durable
medical equipment and pharmacy products and services  companies.  The total cash
paid for such  acquisitions  was $221.8  million  and RoTech  issued 1.4 million
shares of RoTech Common Stock.  Goodwill at the date of  acquisition  related to
such transactions was $155.3 million. 


                                       91
<PAGE>

                       PRO FORMA COMBINED BALANCE SHEET
                           ROTECH MEDICAL CORPORATION
                              AS OF APRIL 30, 1997
                                 (IN THOUSANDS)





<TABLE>
<CAPTION>
                                                                           (HISTORICAL)
                                                                            COMBINED
                                                          HISTORICAL        ACQUIRED          PRO FORMA         PRO FORMA
                                                        APRIL 30, 1997      ENTITIES         ADJUSTMENTS        COMBINED
                                                        ----------------   -------------   ------------------   ----------
<S>                                                     <C>                <C>             <C>                  <C>
                                                                                        ASSETS
Current Assets:
 Cash   .............................................      $  8,738           $   17                            $ 8,755
 Accounts receivable   ..............................
   Trade, less allowance for doubtful accounts.             114,135            2,661                            116,796
   Other   ..........................................         2,744                                               2,744
 Inventories  .......................................        20,152              671                             20,823
 Prepaid assets  ....................................         3,710               16                              3,726
                                                           --------           -------                           --------
   Total current assets   ...........................       149,479            3,365                            152,844
 Property and equipment, net ........................       114,847            4,834                            119,681
 Intangible assets, net   ...........................       252,433                -       $    19,057 (a)      271,490
 Other assets .......................................         1,808               26                              1,834
                                                           --------           -------      -----------          --------
   Total Assets  ....................................      $518,567           $8,225       $    19,057          $545,849
                                                           ========           =======      ===========          ========

                                                                 LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities:
 Accounts payable, accrued expenses and other
   liabilities   ....................................      $ 24,524           $6,594       $    (3,506)(b)      $27,612
 Notes payable to banks   ...........................       162,014                -            24,194 (c)      186,208
 Deferred income taxes ..............................           136                -                                136
                                                           --------           -------      -----------          --------
   Total current liabilities ........................       186,674            6,594            20,688          213,956
 Deferred income taxes ..............................        17,357                -                             17,357
 Convertible subordinated debt  .....................       110,000                -                            110,000
 Redeemable common stock  ...........................         3,322                -                              3,322

Shareholders' Equity:
 Common stock .......................................             5              117              (117)(b)            5
 Treasury stock  ....................................          (815)               -                               (815)
 Additional paid-in-capital  ........................       127,403                6                (6)(b)      127,403
 Retained earnings  .................................        74,621            1,508            (1,508)(b)       74,621
                                                           --------           -------      -----------          --------
                                                            201,214            1,631            (1,631)         201,214
                                                           --------           -------      -----------          --------
   Total liabilities and shareholders' equity  ......      $518,567           $8,225       $    19,057          $545,849
                                                           ========           =======      ===========          ========
</TABLE>


                                       92
<PAGE>

                          ROTECH MEDICAL CORPORATION
                       PRO FORMA STATEMENT OF OPERATIONS
                            YEAR ENDED JULY 31, 1996
                                  (UNAUDITED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)





<TABLE>
<CAPTION>
                                            ROTECH                                            ROTECH
                                            MEDICAL                                          MEDICAL
                                          CORPORATION                                       CORPORATION
                                          CONSOLIDATED     COMBINED                          COMBINED
                                          YEAR ENDED       ACQUIRED        PRO FORMA         PRO FORMA
                                         JULY 31, 1996     ENTITIES       ADJUSTMENTS        RESULTS
                                         ---------------   ----------   -----------------   ------------
<S>                                      <C>               <C>          <C>                 <C>
Operating revenue   ..................      $263,030       $172,230                           $435,260
Cost and expenses:
 Cost of revenue .....................        71,013         50,707                            121,720
 Selling, general and administra-
   tive                                      127,357         89,630                            216,987
 Depreciation and amortization  ......        26,520          5,651      $     8,555 (d)        40,726
 Interest  ...........................         5,228          1,960           12,597 (e)        19,785
                                            ---------      ---------     -----------          ---------
                                             230,118        147,948           21,152           399,218
                                            ---------      ---------     -----------          ---------
Income before income taxes   .........        32,912         24,282          (21,152)           36,042
Income tax expense  ..................        12,356            644              516 (f)        13,516
                                            ---------      ---------     -----------          ---------
   Net Income ........................      $ 20,556       $ 23,638      $   (21,668)         $ 22,526
                                            =========      =========     ===========          =========
Net income per share:
 Primary   ...........................      $   0.83                                          $   0.85
 Fully diluted   .....................      $   0.82                                          $   0.83
                                            =========                                         =========
Weighted average number of shares out-
 standing
 Primary   ...........................        24,657          1,956                             26,613
 Fully diluted   .....................        25,206          1,956                             27,162
                                            =========      =========                          =========
</TABLE>


                                       93
<PAGE>

                          ROTECH MEDICAL CORPORATION
                       PRO FORMA STATEMENT OF OPERATIONS
                        NINE MONTHS ENDED APRIL 30, 1997
                                  (UNAUDITED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)






<TABLE>
<CAPTION>
                                             ROTECH
                                            MEDICAL                                            ROTECH
                                          CORPORATION                                         MEDICAL
                                          CONSOLIDATED                                       CORPORATION
                                          NINE MONTHS       COMBINED                          COMBINED
                                             ENDED          ACQUIRED        PRO FORMA         PRO FORMA
                                         APRIL 30, 1997     ENTITIES       ADJUSTMENTS        RESULTS
                                         ----------------   ----------   -----------------   ------------
<S>                                      <C>                <C>          <C>                 <C>
Operating revenue   ..................       $297,575         $ 68,169                         $365,744
Cost and expenses:
 Cost of revenue .....................         77,091           18,616                           95,707
 Selling, general and administra-
   tive                                       145,711           36,311                          182,022
 Depreciation and amortization  ......         30,344            2,565    $    2,304 (d)         35,213
 Interest  ...........................          9,214              792         3,732 (e)         13,738
                                             ---------       ---------    ----------           ---------
                                              262,360           58,284         6,036            326,680
                                             ---------       ---------    ----------           ---------
Income before income taxes   .........         35,215            9,885        (6,036)            39,064
Income tax expense  ..................         13,322               62         1,382 (f)         14,766
                                             ---------       ---------    ----------           ---------
   Net Income ........................       $ 21,893         $  9,823    $   (7,418)          $ 24,298
                                             =========       =========    ==========           =========
Net income per share:
 Primary   ...........................       $   0.84                                          $   0.90
 Fully diluted   .....................       $   0.81                                          $   0.86
                                             =========                                         =========
Weighted average number of shares out-
 standing:
 Primary   ...........................         26,187              769                           26,956
 Fully diluted   .....................         30,729              769                           31,498
                                             =========       =========                         =========
</TABLE>



                                       94
<PAGE>

              NOTES TO PRO FORMA FINANCIAL INFORMATION FOR ROTECH

(a) Represents the purchase price of 14  acquisitions in excess of the estimated
    fair value of the net assets and outstanding stock acquired from May 1, 1997
    through July 31, 1997, as follows:



<TABLE>
     <S>                                             <C>         
     Merger consideration ........................   $24,194,000 
     Other liabilities assumed  ..................     3,087,764 
                                                     ------------
                                                      27,281,764 
                                                     ------------
     Net assets and outstanding stock acquired   .     8,224,887 
                                                     ------------
                                                     $19,056,877 
                                                     ============
</TABLE>

(b)  Represents the elimination of equity and intercompany accounts arising from
     companies acquired from May 1, 1997 through July 31, 1997.

(c) Represents  consideration  paid  for  14 companies acquired from May 1, 1997
     through July 31, 1997.

(d)  Represents  additional  amortization  relating  to  goodwill  recorded as a
     result of the acquisitions, amortized using a straight line basis over 5-25
     years.

(e) Represents  additional  interest  expense  resulting from  borrowings  under
    RoTech's  revolving credit facility of $270.1 million and $131.6 million for
    the year ended  July 31,  1996 and the nine  months  ended  April 30,  1997,
    respectively, to finance acquisitions.

(f) Represents  effective  tax rate for the year  ended  July 31,  1996 and nine
    months ended April 30, 1997 of 37.5% and 37.8%, respectively.


                                       95
<PAGE>

                                BUSINESS OF IHS


GENERAL OVERVIEW


     Integrated  Health Services,  Inc. is one of the nation's leading providers
of  post-acute  healthcare  services.  Post-acute  care  is the  provision  of a
continuum of care to patients  following  discharge from an acute care hospital.
IHS' post-acute care services include subacute care, home care,  skilled nursing
facility  care  and  inpatient  and  outpatient   rehabilitation,   hospice  and
diagnostic  services.  IHS'  post-acute  care network is designed to address the
fact that the cost  containment  measures  implemented  by private  insurers and
managed care  organizations  and  limitations  on  government  reimbursement  of
hospital  costs have resulted in the discharge  from  hospitals of many patients
who  continue  to require  medical  and  rehabilitative  care.  IHS'  post-acute
healthcare system is intended to provide  cost-effective  continuity of care for
its  patients  in  multiple  settings  and enable  payors to  contract  with one
provider to provide all of a patient's needs following discharge from acute care
hospitals.  IHS believes that its post-acute care network can be extended beyond
post-acute care to also provide  "pre-acute"  care,  i.e.,  services to patients
which reduce the likelihood of a need for a hospital stay.  IHS' post-acute care
network  currently  consists of  approximately  1,050  service  locations  in 45
states.

     IHS'  post-acute  care  network  strategy  is  to  provide   cost-effective
continuity of care for its patients in multiple  settings,  using geriatric care
facilities  as  platforms  to provide a wide  variety of  subacute  medical  and
rehabilitative  services  more  typically  delivered in the acute care  hospital
setting and using home  healthcare to provide  those medical and  rehabilitative
services which do not require  24-hour  monitoring.  To implement its post-acute
care  network  strategy,  IHS' has  focused on (i)  expanding  the range of home
healthcare  and  related  services  it offers to  patients  directly in order to
provide patients with a continuum of care throughout  their recovery,  to better
control  costs and to meet the growing  desire by payors for one-stop  shopping;
(ii)  developing  market  concentration  for its  post-acute  care  services  in
targeted  states  due  to  increasing  payor  consolidation  and  the  increased
preference of payors,  physicians and patients for dealing with only one service
provider;  and (iii)  developing  subacute  care  units.  Given  the  increasing
importance of managed care in the healthcare  marketplace and the continued cost
containment  pressures from Medicare,  Medicaid and private payors, IHS has been
restructuring its operations to enable IHS to focus on obtaining  contracts with
managed care organizations and to provide capitated  services.  IHS' strategy is
to become a preferred  or  exclusive  provider of  post-acute  care  services to
managed care organizations and other payors.

     In  implementing  its post-acute  care network  strategy,  IHS has recently
focused  on  expanding  its  home  healthcare  services  to  take  advantage  of
healthcare  payors'  increasing  focus  on  having  healthcare  provided  in the
lowest-cost  setting possible,  recent advances in medical technology which have
facilitated the delivery of medical services in alternative  sites and patients'
desires to be treated at home.  Consistent  with IHS'  strategy,  IHS in October
1996 acquired First American,  a provider of home health  services,  principally
home nursing, in 21 states,  primarily Alabama,  California,  Florida,  Georgia,
Michigan, Pennsylvania and Tennessee. See "IHS Recent Developments." IHS intends
to use the  home  healthcare  setting  and the  delivery  franchise  of its home
healthcare branch and agency network to (i) deliver  sophisticated care, such as
skilled  nursing care,  home infusion  therapy and  rehabilitation,  outside the
hospital or nursing home; (ii) serve as an entry point for patients into the IHS
post-acute  care  network;  and  (iii)  provide a  cost-effective  site for case
management and patient direction.

     In order to expand further its home healthcare  services,  IHS in July 1997
entered  into the  Merger  Agreement  to  acquire  RoTech,  a  provider  of home
healthcare  products and services,  with an emphasis on home  respiratory,  home
medical  equipment and infusion  therapy,  principally  to patients in non-urban
areas.  In August 1997,  IHS agreed to acquire the Coram  Lithotripsy  Division,
which provides lithotripsy  services and equipment  maintenance in 180 locations
in 18 states, in order to expand the mobile diagnostic treatment and services it
offers to patients,  payors and other  providers.  Lithotripsy is a non-invasive
technique that utilizes  shock waves to  disintegrate  kidney stones.  In August
1997,  IHS also agreed to acquire  CCA,  which  develops  and  operates  skilled
nursing facilities in medically underserved rural communities. IHS believes that
CCA will broaden its post-acute care network to include more 


                                       96
<PAGE>


rural  markets  and  will  complement  its existing home care locations in rural
markets  as  well  as RoTech's business. See "IHS Recent Developments - Proposed
Acquisitions," "The Merger" and "Business of RoTech."


     IHS provides subacute care through medical specialty units ("MSUs"),  which
are typically 20 to 75 bed specialty units with physical identities, specialized
medical  technology and staffs  separate from the geriatric  care  facilities in
which they are  located.  MSUs are  designed  to provide  comprehensive  medical
services to patients who have been  discharged from acute care hospitals but who
still require subacute or complex medical  treatment.  The levels and quality of
care provided in IHS' MSUs are similar to those  provided in the hospital but at
per diem  treatment  costs which the IHS believes are generally 30% to 60% below
the cost of such care in acute  care  hospitals.  Because  of the high  level of
specialized care provided,  IHS' MSUs generate  substantially higher net revenue
and operating profit per patient day than  traditional  geriatric care services.
Total  revenues  generated  from MSUs have increased from $104.3 million for the
year ended  December 31, 1993 to $178.0  million for the year ended December 31,
1994, $290.2 million for the year ended December 31, 1995 and $324.0 million for
the year ended  December  31,  1996 and from  $157.1  million for the six months
ended June 30, 1996 to $172.9  million for the six months  ended June 30,  1997.
MSU revenues as a percentage of total  revenues were 35% in 1993, 25% in each of
1994 and 1995, 23% in 1996 and 24% and 19% in the six months ended June 30, 1996
and 1997, respectively. The percentage decrease in 1994 was primarily the result
of the  acquisition  of  facilities  which  did not  have  MSUs  at the  time of
acquisition as well as the acquisition of rehabilitation,  pharmacy, diagnostic,
respiratory therapy, home healthcare and related service companies in connection
with  IHS'  vertical   integration  strategy  and  the  implementation  of  IHS'
post-acute  care  network.  MSU  revenue as a  percentage  of total  revenues is
expected to continue to decrease  as IHS  implements  its  vertical  integration
strategy  and  continues  to expand its  post-acute  care  network  through  the
acquisition of home healthcare, rehabilitation and similar service companies.

     IHS presently  operates 172 geriatric care  facilities (116 owned or leased
and 56 managed) and 158 MSUs located  within 84 of these  facilities.  Specialty
medical  services  revenues,  which  include all MSU  charges,  all revenue from
providing  rehabilitative  therapies,  pharmaceuticals,   medical  supplies  and
durable medical equipment to all its patients,  all revenue from its Alzheimer's
programs and all revenue from its provision of pharmacy, rehabilitation therapy,
home  healthcare,   hospice  care  and  similiar   services  to   third-parties,
constituted  approximately  57%,  65% and 70% of net  revenues  during the years
ended  December 31, 1994,  1995 and 1996,  respectively.  IHS also offers a wide
range of basic medical services as well as a comprehensive array of respiratory,
physical, speech,  occupational and physiatric therapy in all its geriatric care
facilities.  For the year ended  December  31, 1996,  approximately  17% of IHS'
revenues were derived from home health and hospice care,  approximately 53% were
derived  from  subacute and other  ancillary  services,  approximately  27% were
derived  from  traditional   basic  nursing  home  services  and  the  remaining
approximately 3% were derived from management and other services. On a pro forma
basis after giving effect to the  acquisition  of First  American,  for the year
ended  December 31, 1996,  approximately  35% of IHS' revenues were derived from
home health and hospice care,  approximately  41% were derived from subacute and
other ancillary services,  approximately 21% were derived from traditional basic
nursing  home  services  and the  remaining  approximately  3% were derived from
management and other  services.  On a pro forma basis after giving effect to the
Merger and the  acquisition of First  American,  for the year ended December 31,
1996,  approximately  44% of IHS'  revenues  were  derived  from home health and
hospice care,  approximately  36% were derived from subacute and other ancillary
services,  approximately  18% were derived from  traditional  basic nursing home
services and the remaining  approximately  2% were derived from  management  and
other services.


INDUSTRY BACKGROUND

     In 1983, the Federal  government  acted to curtail  increases in healthcare
costs under Medicare,  a Federal insurance program under the Social Security Act
primarily  for  individuals  age 65 or over.  Instead of continuing to reimburse
hospitals on a cost plus basis (i.e., the hospital's  actual cost of care plus a
specified return on investment),  the Federal government  established a new type
of  payment  system  based  on  prospectively   determined  prices  rather  than
retrospectively determined costs, with payment for


                                       97
<PAGE>

inpatient  hospital  services based on regional and national  rates  established
under a system of diagnosis-related groups ("DRGs"). As a result, hospitals bear
the cost risk of providing care inasmuch as they receive specified reimbursement
for each treatment regardless of actual cost.


     Concurrent with the change in government reimbursement of healthcare costs,
a "managed care" segment of the healthcare  industry  emerged based on the theme
of cost containment. The health maintenance organizations and preferred provider
organizations,  which  constitute  the managed care  segment,  are able to limit
hospitalization  costs  by  giving  physicians  incentives  to  reduce  hospital
utilization and by negotiating  discounted fixed rates for hospital services. In
addition,   traditional   third  party   indemnity   insurers   began  to  limit
reimbursement to pre-determined  amounts of "reasonable  charges," regardless of
actual  cost,  and to increase the amount of  co-payment  required to be paid by
patients,  thereby  requiring  patients  to assume  more of the cost of hospital
care.  These  changes have  resulted in the earlier  discharge of patients  from
acute care hospitals.


     At the same  time,  the  number of people  over the age of 65 began to grow
significantly faster than the overall population.  Further,  advances in medical
technology have increased the life expectancies of an increasingly  large number
of medically complex patients,  many of whom require a high degree of monitoring
and specialized care and rehabilitative  therapy that is generally not available
outside  the acute  care  hospital.  However,  the  changes  in  government  and
third-party  reimbursement  and  growth  of  the  managed  care  segment  of the
healthcare industry, when combined with the fact that the cost of providing care
to these  patients in an acute care hospital is higher than in a non-acute  care
hospital  setting,  provide  economic  incentives  for acute care  hospitals and
patients  or their  insurers  to  minimize  the  length  of stay in  acute  care
hospitals.  The early  discharge  from  hospitals  of patients who are not fully
recovered  and  still  require  medical  care  and  rehabilitative  therapy  has
contributed  significantly to the rapid growth of the home healthcare  industry,
as have  recent  advances  in medical  technology,  which have  facilitated  the
delivery of services in alternate sites,  demographic  trends,  such as an aging
population,  and a preference for home healthcare  among patients.  As a result,
home healthcare is among the fastest growing areas in healthcare.


     However,  for  some of  these  patients  home  healthcare  is not a  viable
alternative  because of their  continued  need for a high degree of  monitoring,
more intensive and specialized  medical care, 24-hour per day nursing care and a
comprehensive  array of rehabilitative  therapy. As a result, IHS believes there
is an increasing need for non-acute care hospital  facilities  which can provide
the  monitoring,  specialized  care  and  comprehensive  rehabilitative  therapy
required by the growing population of subacute and medically complex patients.


     The  traditional  nursing  home,  despite  its  skilled  care  license  and
eligibility for Medicare certification,  has focused on providing custodial care
to Medicaid  eligible  persons until they die. The state Medicaid  reimbursement
program   reinforces  this  focus  by  typically   setting  "cost  ceilings"  on
reimbursement  for each  patient  based on overall  average  state costs for all
patients.  Since the  "average"  patient is a long-stay,  non-medically  complex
patient,  nursing homes face an economic disincentive to treat medically complex
patients because Medicaid reimburses the nursing home as if it had provided only
custodial care to a non-medically complex patient regardless of the type of care
actually provided. In addition, state laws impose substantial restrictions on or
prohibitions  against the ability of a facility to reduce the number of Medicaid
certified  beds in a  facility,  thus making the  process of  converting  to the
treatment of more medically  complex  non-Medicaid  eligible  persons a long and
financially  risky process.  As a result,  most traditional  nursing homes, with
high Medicaid census and earnings and cash flow under pressure, are reluctant to
spend the capital required to upgrade staff,  implement medical procedures (such
as infection  control) and equip a nursing home to treat  subacute and medically
complex patients and provide the comprehensive  rehabilitative  therapy required
by many of these patients.


     Moreover,  recent  healthcare  reform  proposals,  which  have  focused  on
containment of healthcare costs,  together with the desire of third-party payors
to contract with one service  provider for all  post-acute  care  services,  the
increasing  complexity of medical  services  provided,  growing  regulatory  and
compliance requirements and increasingly complicated reimbursement systems, have
resulted in a trend of  consolidation  of smaller,  local operators who lack the
sophisticated management information systems,


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operating  efficiencies  and  financial  resources to compete  effectively  into
larger, more established regional or national operators that offer a broad range
of services,  either through its own network or through  subcontracts with other
third-party service providers.


     There  are  numerous  initiatives  on the  federal  and  state  levels  for
comprehensive  reforms  affecting the payment for and availability of healthcare
services.  It is not clear at this time what proposals,  if any, will be adopted
or, if adopted, what effect such proposals would have on IHS' business.  Aspects
of certain of these healthcare  proposals,  such as cutbacks in the Medicare and
Medicaid programs, reductions in Medicare reimbursement rates and/or limitations
on reimbursement  rate increases,  containment of healthcare costs on an interim
basis by means  that  could  include a  short-term  freeze on prices  charged by
healthcare   providers,   and  permitting   greater  state  flexibility  in  the
administration  of  Medicaid,  could  adversely  affect  IHS.  See "- Sources of
Revenue." There can be no assurance that currently proposed or future healthcare
legislation  or  other  changes  in  the  administration  or  interpretation  of
governmental healthcare programs will not have an adverse effect on IHS. Ongoing
consolidation  in the  healthcare  industry  could also impact IHS' business and
results of operations.  See "Risk Factors - Risk of Adverse Effect of Healthcare
Reform" and "- Uncertainty of Government Regulation." 


COMPANY STRATEGY


     IHS'  post-acute  care  network  strategy  is  to  provide   cost-effective
continuity of care for its patients in multiple  settings,  using geriatric care
facilities  as  platforms  to provide a wide  variety of  subacute  medical  and
rehabilitative  services  more  typically  delivered in the acute care  hospital
setting and using home  healthcare to provide  those medical and  rehabilitative
services which do not require 24-hour monitoring.  IHS believes that the success
of its  post-acute  care  strategy  will  depend in large part on its ability to
control  each  component  of the  post-acute  care  delivery  system in order to
provide low-cost,  high quality outcomes.  The central elements of IHS' business
strategy are: 

     Vertical  Integration  of Post-acute  Care  Services.  IHS is expanding the
range of home healthcare and related services it offers to its patients directly
in  order  to  serve  the  full  spectrum  of  patient  needs   following  acute
hospitalization. In addition to subacute care, IHS is now able to offer directly
to its patients,  rather than through  third-party  providers,  home healthcare,
rehabilitation  (physical,  occupational  and  speech),  hospice care and mobile
x-ray and electrocardiogram  services. As a full service provider,  IHS believes
that it is better  able to respond  to the needs of its  patients  and  referral
sources.  In addition,  IHS believes that by offering managed care organizations
and insurance companies a single source from which to obtain a full continuum of
care to  patients  following  discharge  from the acute care  hospital,  it will
attract  healthcare  payors  seeking to improve  the  management  of  healthcare
quality as well as to reduce  servicing and  administrative  expenses.  IHS also
believes that offering a broad range of services will allow it to better control
certain costs, which will provide it with a competitive advantage in contracting
with managed care companies and offering  capitated  rates,  whereby IHS assumes
the financial risk for the cost of care.

     Expansion  of  Home-Based  Services.  IHS'  strategy  is to expand its home
healthcare  services to take advantage of healthcare payors' increasing focus on
having  healthcare  provided in the lowest-cost  setting  possible and patients'
desires to be treated at home. IHS believes that the nation's aging  population,
when combined with advanced  technology which allows more healthcare  procedures
to be  performed  at home,  has  resulted  in an  increasingly  large  number of
patients with long-term  chronic  conditions that can be treated  effectively in
the home. In addition,  a significant  number of patients  discharged  from IHS'
MSUs  require home  healthcare.  IHS also  believes  that it can expand its home
healthcare  services  to cover  pre-acute,  as well as  post-acute,  patients by
having home  healthcare  nurses provide  preventive  care services to home-bound
senior  citizens.  In addition,  IHS believes that home healthcare will help IHS
contain costs, thereby providing it with a competitive  advantage in contracting
with managed care companies and offering  capitated rates. IHS believes that the
changing  healthcare   reimbursement   environment,   with  the  focus  on  cost
containment,  will require healthcare  providers to go "at risk" under capitated
service agreements, and that home healthcare will be a critical component of its
ability to do so.

     IHS  believes  that the  acquisition  of First  American and the Merger are
important components in the implementation of its post-acute  healthcare system.
First American,  together with IHS' existing home healthcare  operations,  gives
IHS a significant home healthcare presence in 21 states, including


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those states IHS has targeted for its post-acute healthcare system. IHS believes
that its expanded home  healthcare  network will assist it in meeting the desire
of payors for one stop shopping,  as well as offering capitated rates to managed
care  providers.  Additionally,  IHS  expects  that  Medicare  will  implement a
prospective  payment system for home nursing services in the next several years.
Currently, Medicare provides reimbursement for home nursing care on a cost basis
which  includes  a rate of  return,  subject  to a cap.  There is no reward  for
efficiency,  provided that costs are below the cap.  Under  current  prospective
payment proposals,  a healthcare provider would receive a predetermined rate for
a given  service.  Providers  with costs  below the  predetermined  rate will be
entitled to keep some or all of this  difference.  Under  prospective  pay,  the
efficient operator will be rewarded. Since the largest component of home nursing
care costs is labor, which is basically fixed, IHS believes the  differentiating
factor in profitability  will be administrative  costs. As a result of the First
American Acquisition,  IHS, as a large provider of home nursing services, should
be able to achieve administrative efficiencies compared with the small providers
which currently dominate the home healthcare industry,  although there can be no
assurance it will be able to do so. There can be no assurance that Medicare will
implement a  prospective  payment  system for home nursing  services in the next
several  years  or at all.  See  "Risk  Factors  - Risk  of  Adverse  Effect  of
Healthcare Reform."



     Focus on Managed Care.  Given the increasing  importance of managed care in
the healthcare  marketplace  and the continued cost  containment  pressures from
Medicare and Medicaid,  IHS has, over the past year,  begun to  restructure  its
operations  to position  IHS to focus on obtaining  contracts  with managed care
organizations  and to provide capitated  services.  IHS' strategy is to become a
preferred or exclusive provider to managed care organizations.  Although to date
there has been limited  demand among managed care  organizations  for post-acute
care services,  IHS believes demand will increase as HMOs continue to attempt to
control  healthcare costs and to penetrate the Medicare  market.  As part of its
focus on managed care and capitated  rates,  IHS spent several years  collecting
outcome data for more than 50,000 patients.  To date, IHS has service agreements
with  approximately  395 managed care  organizations.  In January 1996,  IHS was
chosen as the  exclusive  capitated  provider for five years of long-term  care,
subacute care and therapy services to Sierra Health Plan's Health Plan of Nevada
("Sierra Health"),  the largest HMO in Nevada with approximately 26,000 Medicare
enrollees  and 125,000  commercial  enrollees.  As the exclusive  provider,  IHS
provides all contracted  services to the HMO's members; as a capitated provider,
IHS accepts full risk of patient  care in exchange for a flat fee per  enrollee.
The agreement with Sierra Health provides for annual capitation  adjustments and
the ability to increase revenue through other non-capitated  services,  although
there can be no  assurance  that these  provisions  will be effective to protect
IHS. In addition,  in October  1996 IHS entered  into a three-year  agreement to
provide,  on an exclusive  basis,  long-term  and  subacute  care to patients of
Foundation Health Corporation  ("Foundation Health"), an HMO located in Florida,
on a capitated  basis.  Foundation  Health  currently has  approximately  24,500
Medicare and 60,000 commercial  enrollees.  The agreement provides for increased
revenues to IHS for reduced hospital utilization.  Although IHS has attempted to
minimize its risk under the contract,  there can be no assurance that safeguards
it implemented  will be effective.  See "Risk Factors - Risks Related to Managed
Care Strategy." 


     Subacute Care Through Medical Specialty Units. IHS' strategy is designed to
take advantage of the need for early  discharge of many patients from acute care
hospitals by using MSUs as subacute  specialty  units within its geriatric  care
facilities.  MSUs provide the monitoring and specialized  care still required by
these persons after  discharge  from acute care  hospitals at per diem treatment
costs  which IHS  believes  are  generally  30% to 60% below the cost of care in
acute care  hospitals.  IHS also intends to continue to use its  geriatric  care
facilities  to  meet  the  increasing  need  for  cost-efficient,  comprehensive
rehabilitation  treatment of these patients.  The primary MSU programs currently
offered by IHS are complex care programs,  ventilator programs, wound management
programs and cardiac care programs;  other  programs  offered  include  subacute
rehabilitation, oncology and HIV. IHS opened its first MSU program in April 1988
and currently  operates 158 MSU programs in 84 facilities.  IHS also  emphasizes
the care of medically  complex patients through the provision of a comprehensive
array of respiratory, physical, speech, occupational and physiatric therapy. IHS
intends  that  its  MSUs  be  a  lower  cost   alternative   to  acute  care  or
rehabilitation  hospitalization  of subacute or medically complex patients.  IHS
intends to expand its  specialty  medical  services  at its  existing  and newly
acquired  facilities.  IHS believes  that its subacute  care  programs will also
serve  as an  important  referral  base for its home  healthcare  and  ancillary
services. In expanding its post-


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acute care network,  IHS expects to place less emphasis on subacute care through
MSUs and more  emphasis  on home  healthcare.  While IHS added 1,098 MSU beds in
1994 and 868 MSU beds in 1995, it only added an additional  383 MSU beds in 1996
and 105 MSU beds in the first half of 1997, and it anticipates that it will only
add an additional 200 to 300 MSU beds in each of 1997 and 1998.


     Concentration on Targeted  Markets.  IHS has implemented a strategy focused
on the development of market  concentration  for its post-acute care services in
targeted states due to increasing payor consolidation. IHS also believes that by
offering its services on a concentrated basis in targeted markets, together with
the vertical  integration of its services,  it will be better positioned to meet
the needs of  managed  care  payors.  IHS now has  approximately  1,050  service
locations in 45 states, including 172 geriatric care facilities in 30 states (56
of which IHS manages),  with: 59 service locations,  including 23 geriatric care
facilities  (21 of which IHS manages),  in  California;  163 service  locations,
including 32 geriatric care facilities (five of which IHS manages),  in Florida;
75 service  locations,  including 14 geriatric care facilities (two of which IHS
manages),  in Pennsylvania;  and 138 service  locations,  including 20 geriatric
care facilities (six of which IHS manages), in Texas.


     Expansion  Through  Acquisitions.   IHS  has  grown  substantially  through
acquisitions  and the opening of MSUs and the acquisition of home healthcare and
related  service  providers,  and expects to continue to expand its  business by
expanding the amount of home healthcare and related  services it offers directly
to its  patients  rather than through  third-party  providers,  by  establishing
additional  MSUs and  rehabilitation  programs in its  existing  geriatric  care
facilities,  by  acquiring  additional  geriatric  care  facilities  in which to
establish  MSUs and  rehabilitation  programs and by expanding the number of MSU
programs offered.  From January 1, 1991 to date, IHS has increased the number of
geriatric  care  facilities  it owns or leases from 25 to 116, has increased the
number of  facilities  it manages from 18 to 56 and has  increased the number of
MSU  programs it operates  from 13 to 158. In addition,  IHS now offers  certain
related   services,   such  as  home  healthcare,   rehabilitation,   x-ray  and
electrocardiogram,  directly to its patients  rather than relying on third-party
providers.  IHS' planned  expansion and growth  require that IHS expand its home
healthcare  services  through the  acquisition  of  additional  home  healthcare
providers,  that IHS acquire,  or establish  relationships  with,  third-parties
which provide other post-acute care services not currently provided by IHS, that
additional MSUs be established in IHS' existing facilities and that IHS acquire,
lease or acquire the right to manage for others  additional  facilities in which
MSUs can be  established.  See "Risk  Factors  - Risks  Associated  with  Growth
Through Acquisitions and Internal Development."


PATIENT SERVICES



BASIC MEDICAL SERVICES


     IHS provides a wide range of basic medical  services at its geriatric  care
facilities which are licensed as skilled care nursing homes.  Services  provided
to all patients include required nursing care, room and board, special diets and
other services  which may be specified by a patient's  physician who directs the
admission, treatment and discharge of the patient.



SPECIALTY MEDICAL SERVICES



     Medical Specialty Units

     IHS' MSUs are typically 20 to 75 bed subacute  specialty care units located
within discrete areas of IHS' facilities, with physical identities,  specialized
medical   technology  and  medical  staffs  separate  from  the  geriatric  care
facilities in which they are located.  An intensive care unit nurse,  or a nurse
with  specialty  qualifications,  serves as clinical  coordinator  of each unit,
which  generally  is staffed  with nurses  having  experience  in the acute care
setting.  The operations of each MSU are generally overseen by a Board certified
specialist  in that  unit's  area of  treatment.  The  patients  in each MSU are
provided with a high degree of monitoring and  specialized  care similar to that
provided  by  acute  care  hospitals.  The  physiological  monitoring  equipment
required by the MSU is equivalent to that found in the acute care hospital.  IHS
opened its first MSU program  during April 1988 and currently  operates 158 MSUs
at 84 facilities.  Approximately one-third of all of IHS' MSU patients are under
the age of 70.


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     Although each MSU has most of the treatment  capabilities  of an acute care
hospital  in the  MSU's  area of  specialization,  IHS  believes  the  per  diem
treatment  costs are  generally  30% to 60% less than in acute  care  hospitals.
Additionally,  the MSU is less  "institutional"  in nature  than the acute  care
hospital,  families  may  visit  MSU  patients  whenever  they  wish and  family
counseling is provided. In marketing its MSU programs to insurers and healthcare
providers,  IHS  emphasizes  the cost  advantage of its treatment as compared to
acute  care  hospitals.  IHS also  emphasizes  the  improved  "quality  of life"
compared  to acute  care and  long-term  care  hospitals  in  marketing  its MSU
programs to  hospital  patients  and their  families.  The primary MSU  programs
currently offered by IHS are complex care programs,  ventilator programs,  wound
management  programs and cardiac care programs;  other programs  offered include
subacute rehabilitation, oncology and HIV.

     Complex Care  Program.  This  program is designed to treat  persons who are
generally  subacute or chronically ill and sick enough to be treated in an acute
care  hospital.  Persons  requiring  this care include  post-surgical  patients,
cancer  patients  and  patients  with other  diseases  requiring  long  recovery
periods. This program is designed to provide the monitoring and specialized care
these  patients  require  but in a less  institutional  and more cost  efficient
setting than provided by hospitals.  Some of the monitoring and specialized care
provided  to  these  patients  are  apnea  monitoring,   continuous   peripheral
intravenous  therapy  with  or  without  medication,   continuous   subcutaneous
infusion,  chest percussion and postural  drainage,  gastrostomy or naso-gastric
tube  feeding,   ileostomy  or  fistula  care  (including   patient   teaching),
post-operative  care,  tracheostomy  care,  and  oral,  pharyngeal  or  tracheal
suctioning.   Patients  in  this  program  also  typically   undergo   intensive
rehabilitative services to allow them to return home.

     Ventilator  Program.  This  program is  designed  for  persons  who require
ventilator   assistance  for  breathing   because  of  respiratory   disease  or
impairment.   Persons  requiring   ventilation   include  sufferers  of  chronic
obstructive  pulmonary  disease,   muscular  atrophy  and  respiratory  failure,
pneumonia,  cancer,  spinal cord or traumatic brain injury and other diseases or
injuries which impair  respiration.  Ventilators assist or effect respiration in
patients  unable to breathe  adequately  for  themselves  by  injecting  heated,
humidified,  oxygen-enriched  air into the lungs at a pre-determined  volume per
breath and number of breaths per minute and by controlling  the  relationship of
inhalation time to exhalation time. Patients in this program undergo respiratory
rehabilitation  to wean them from  ventilators  by  teaching  them to breathe on
their own once they are medically  stable.  Patients are also trained to use the
ventilators on their own.

     Wound  Management  Programs.  These  programs are designed to treat persons
suffering  from post  operative  complications  and persons  infected by certain
forms of penicillin and other antibiotic resistant bacteria, such as methicillin
resistant staphylococcus aureus ("MRSA").  Patients infected with these types of
bacteria must be isolated under strict infection  control  procedures to prevent
the spread of the resistant  bacteria,  which makes MSUs an ideal treatment site
for these patients.  Because of the need for strict infection control, including
isolation, treatment of this condition in the home is not practical.

     Cardiac Care Program.  This program is designed to treat persons  suffering
from congestive heart failure,  severe cardiac arrhythmia,  pre/post transplants
and other cardiac  diagnoses.  The monitoring and  specialized  care provided to
these patients includes  electrocardiographic  monitoring/telemetry,  continuous
hemodynamic  monitoring,   infusion  therapy,  cardiac  rehabilitation,   stress
management and dietary counseling, planning and education.

     IHS  believes  that MSU programs can be developed to address a wide variety
of medical  conditions  which require  specialized  care.  In addition,  IHS has
developed  MSU  programs  for  subacute  rehabilitation,  oncology  and HIV. IHS
intends  to  establish  additional  MSUs  in  its  existing  facilities  and  in
facilities which it acquires or manages for others to address the various market
needs for MSU programs in the markets in which it operates.


     Rehabilitation

     IHS provides a comprehensive array of rehabilitative  services for patients
at all of its geriatric care facilities, including those in its MSU programs, in
order to enable those persons to return home. These services include respiratory
therapy with licensed respiratory therapists, physical therapy with a partic-


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ular emphasis on programs for the elderly, speech therapy,  particularly for the
elderly recovering from cerebral vascular  disorders,  occupational  therapy and
physiatric care. A portion of the  rehabilitative  service hours are provided by
independent contractors. In order to reduce the number of rehabilitative service
hours  provided by  independent  contractors,  IHS began in late 1993 to acquire
companies which provide physical,  occupational and speech therapy to healthcare
facilities.

     IHS also offers a rehabilitation  program to stroke victims and persons who
have undergone hip replacement.


     Home Healthcare Services

     IHS  provides  a  broad  spectrum  of  home  healthcare   services  to  the
recovering,  disabled, chronically ill or terminally ill person. Home healthcare
services  may be as basic as  assisting  with  activities  of daily living or as
complex as cancer chemotherapy. Care involves either or both a service component
(provided by registered  nurses,  home health aides,  therapists and technicians
through periodic visits) and a product component  (drugs,  equipment and related
supplies).  Time  spent  with a  patient  may  range  from one or two  visits to
around-the-clock care. Patients may be treated for several weeks, several months
or the remainder of their lives.

     The home healthcare market is generally divided into four segments: nursing
services; infusion therapy;  respiratory therapy; and home medical equipment. On
a pro forma basis after giving effect to the Merger,  the  acquisition  of First
American and the ILC Sale,  IHS had home  healthcare  revenues of  approximately
$549.1  million,  $812.3  million,  $944.1  million,  $398.9  million and $475.8
million  during the years ended  December  31,  1994,  1995 and 1996 and the six
months ended June 30, 1996 and 1997,  respectively,  representing  approximately
45.4%, 43.6%, 44.9%, 39.3% and 43.0%,  respectively,  of total pro forma patient
revenues.  On a pro  forma  basis  after  giving  effect to the  Merger  and the
acquisition of First American, home nursing services accounted for approximately
80.7%,  77.4%,  64.2%, 68.8% and 56.3% of IHS' home healthcare revenues in 1994,
1995 and 1996 and the six months ended June 30, 1996 and 1997, respectively.

     Home Nursing. Home nursing is the largest component of home healthcare, the
most  labor-intensive and generally the least profitable.  Home nursing services
range from skilled care provided by registered  and other nurses,  typically for
those recently  discharged from hospitals,  to unskilled  services  delivered by
home health aides for those  needing help with the  activities  of daily living.
Home nursing also includes physical, occupational and speech therapy, as well as
social worker  services.  IHS  substantially  expanded its home nursing services
through the acquisition of First American,  and currently  provides home nursing
services at approximately 440 locations in 25 states.

     Infusion  Therapy.  Infusion  therapy,  the second largest home  healthcare
market, involves the intravenous  administration of anti-infective,  biotherapy,
chemotherapy,  pain management,  nutrition and other therapies. Infusion therapy
generally  requires  patient  training,   specialized   equipment  and  periodic
monitoring by skilled nurses.  Technological advances such as programmable pumps
that control  frequency and intensity of delivery are  increasing the percentage
of  infections  and diseases that are  treatable in the home;  previously  these
infections and diseases  generally  required  patients to be hospitalized.  Home
infusion  therapy is more  skilled-labor-intensive  than  other home  healthcare
segments.  The Merger  will  significantly  expand  IHS' home  infusion  therapy
services. See "The Merger" and "Business of RoTech."

     Respiratory  Therapy.  Respiratory  therapy is provided  primarily to older
patients  with  chronic lung  diseases  (such as chronic  obstructive  pulmonary
disease,  asthma and cystic fibrosis) or reduced respiratory function.  The most
common  therapy is home oxygen,  delivered  through  oxygen gas systems,  oxygen
concentration  or liquid  oxygen  systems.  Respiratory  therapy is monitored by
licensed respiratory  therapists and other clinical staff under the direction of
physicians.  The Merger  will  significantly  expand  IHS'  respiratory  therapy
services. See "The Merger" and "Business of RoTech."

     Home  Medical  Equipment.  Home  medical  equipment consists of the sale or
rental  of  medical  equipment  such  as specialized beds, wheelchairs, walkers,
rehabilitation  equipment  and other patient aids. The Merger will significantly
expand  IHS' provision of home medical equipment. See "The Merger" and "Business
of RoTech."


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     Alzheimer's Program

     IHS  also  offers  a  specialized   treatment   program  for  persons  with
Alzheimer's disease. This program,  called "The Renaissance Program," is located
in a specially  designed wing separated from the remainder of the facility.  The
physical  environment is designed to address the problems of disorientation  and
perceptual  confusion  experienced by  Alzheimer's  sufferers.  The  Renaissance
Program is  designed  to help  reduce the stress and  agitation  of  Alzheimer's
disease by addressing the problems of short attention  spans and  hyperactivity.
The staff for this program is specially  recruited and staff  training is highly
specialized.  This  program  is  designed  not only to  provide  care to persons
suffering from Alzheimer's  disease, but also to work with the patient's family.
IHS  currently  offers  The  Renaissance  Program  at 12 of its  geriatric  care
facilities  with a total of 395 beds.  Patients pay a small  premium to IHS' per
diem rate for basic medical care to participate in this program.


     Hospice Services

     IHS provides  hospice  services,  including  medical care,  counseling  and
social services, to the terminally ill in the greater Chicago metropolitan area,
Michigan  and  Pennsylvania.  Hospice care is a  coordinated  program of support
services providing physical, psychological,  social and spiritual care for dying
persons and their families.  Services are provided in the home and/or  inpatient
settings.  The goal of hospice care is typically to improve a terminal patient's
quality of life rather than trying to extend  life.  IHS also  provides  hospice
care to the terminally ill at its facility in Miami, Florida.


MANAGEMENT AND OTHER SERVICES

     IHS  manages  geriatric  care  facilities  under  contract  for  others  to
capitalize on its  specialized  care programs  without making the capital outlay
generally required to acquire and renovate a facility.  IHS currently manages 56
geriatric care  facilities  with 6,337  licensed  beds.  IHS is responsible  for
providing all personnel,  marketing,  nursing, resident care, dietary and social
services,  accounting  and  data  processing  reports  and  services  for  these
facilities, although such services are provided at the facility owner's expense.
The  facility  owner  is  also  obligated  to  pay  for  all  required   capital
expenditures.  IHS manages these facilities in the same manner as the facilities
it owns or leases, and provides the same geriatric care services as are provided
in its  owned or leased  facilities.  Contract  acquisition  costs for legal and
other  direct  costs  incurred to acquire  long-term  management  contracts  are
capitalized and amortized over the term of the related contract.

     IHS receives a management fee for its services which  generally is equal to
4% to 8% of gross revenues of the geriatric care  facility.  Certain  management
agreements  also  provide IHS with an  incentive  fee based on the amount of the
facility's  operating income which exceeds  stipulated  amounts.  Management fee
revenues are  recognized  when earned and billed,  generally on a monthly basis.
Incentive  fees are  recognized  when  operating  results of managed  facilities
exceed amounts  required for incentive fees in accordance  with the terms of the
management agreements.  The management agreements generally have an initial term
of ten years,  with IHS having a right to renew in most  cases.  The  management
agreements  expire at various times between  August 1999 and May 2005,  although
all can be terminated earlier under certain  circumstances.  IHS generally has a
right of first  refusal  in respect of the sale of each  managed  facility.  IHS
believes  that by  implementing  its  specialized  care programs and services in
these facilities, it will be able to increase significantly the operating income
of these  facilities and thereby  increase the management  fees IHS will receive
for managing these facilities.

     IHS also manages  private duty and Medicare  certified home health agencies
in the Dallas/Fort Worth, Texas market.


QUALITY ASSURANCE

     IHS has developed a comprehensive  Quality Assurance Program to verify that
high  standards of care are  maintained at each facility  operated or managed by
IHS. IHS requires that its facilities  meet standards of care more rigorous than
those required by Federal and state law. Under IHS's Quality Assurance  Program,
standards  for  delivery of care are set and the care and  services  provided by
each


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facility are evaluated to insure they meet IHS' standards.  A quality  assurance
team  evaluates  each  facility  bi-annually,  reporting  directly to IHS' Chief
Executive  Officer  and  to the  Chief  Operating  Officer,  as  well  as to the
administrator of each facility.  Facility administrator bonuses are dependent in
part upon their facility's evaluation.  IHS also maintains an 800 number, called
the "In-Touch  Line," which is prominently  displayed  above  telephones in each
facility and placed in patients'  bills.  Patients and staff are  encouraged  to
call  this  number if they  have any  problem  with  nursing  or  administrative
personnel which cannot be resolved  quickly at the facility level.  This program
provides IHS with an early  warning of problems  which may be  developing at the
facility. IHS has also developed a specialized Quality Assurance Program for its
MSU programs.


     IHS has begun a program to obtain  accreditation by the Joint Commission on
Accreditation of Healthcare  Organizations ("JCAHO") for each of its facilities.
At August 31,  1997,  72 of IHS'  facilities  had been fully  accredited  by the
JCAHO. 


OPERATIONS

     The day-to-day  operations of each facility are managed by an on-site state
licensed  administrator,  and an on-site  business  office manager  monitors the
financial  operations of each facility.  The  administrator  of each facility is
supported by other  professional  personnel,  including the  facility's  medical
director, social workers, dietician and recreation staff. Nursing departments in
each  facility  are  under the  supervision  of a  director  of  nursing  who is
state-registered.  The  nursing  staffs are  composed of  registered  nurses and
licensed practical nurses as well as nursing assistants.

     IHS' home healthcare  businesses are conducted  through  approximately  440
branches  which are managed  through three  geographic  area  offices.  The area
office  provides each of its branches with key management  direction and support
services.  IHS'  organizational   structure  is  designed  to  create  operating
efficiencies  associated with certain centralized  services and purchasing while
also promoting local decision making.

     IHS'  corporate  staff  provides  services  such as  marketing  assistance,
training, quality assurance oversight, human resource management,  reimbursement
expertise, accounting, cash management and treasury functions, internal auditing
and  management  support.  Financial  control is maintained  through  fiscal and
accounting  policies that are established at the corporate level for use at each
facility and branch  location.  IHS has  standardized  operating  procedures and
monitors  its  facilities  and  branch   locations  to  assure   consistency  of
operations.  IHS emphasizes frequent communications,  the setting of operational
goals and the  monitoring  of actual  results.  IHS uses a  financial  reporting
system which enables it to monitor, on a daily basis, certain key financial data
at each facility such as payor mix, admissions and discharges, cash collections,
net revenue and staffing.

     Each  facility  and  branch  location  has all  necessary  state  and local
licenses.  Most facilities are certified as providers under the Medicare program
and under the Medicaid program of the state in which they are located.


JOINT VENTURES

     IHS has a 49%  interest  in a  partnership  formed  in 1993 to  manage  and
operate   approximately  8,000  geriatric  care  and  assisted  retirement  beds
("Tutera"),  and a 40%  interest in HPC America,  Inc.,  a Delaware  corporation
("HPC") that operates home infusion and home healthcare companies in addition to
owning  and  managing  physician  practices.  IHS  does not  participate  in the
day-to-day  operations  of Tutera or HPC,  although  its consent is required for
certain material transactions. Under certain circumstances, IHS has the right to
purchase the remaining interest in these entities, based upon a multiple of such
entity's earnings, although IHS' right to purchase the remaining interest in HPC
expires in September 1997.


SOURCES OF REVENUE

     IHS  receives  payments  for  services  rendered to patients  from  private
insurers and patients  themselves,  from the Federal  government under Medicare,
and from the  states  in which  certain  of its  facilities  are  located  under
Medicaid. The sources and amounts of IHS' patient revenues are determined by a


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number of factors, including licensed bed capacity of its facilities,  occupancy
rate, the mix of patients and the rates of reimbursement  among payor categories
(private, Medicare and Medicaid).  Changes in the mix of IHS' patients among the
private pay,  Medicare  and Medicaid  categories  can  significantly  affect the
profitability of IHS' operations.  Generally,  private pay patients are the most
profitable and Medicaid patients are the least profitable.

     During the years  ended  December  31,  1994,  1995 and 1996,  IHS  derived
approximately $297.8 million,  $509.3 million and $562.5 million,  respectively,
or 44.2%,  44.7% and 40.5%,  respectively,  of its patient revenues from private
pay sources and approximately $376.4 million, $629.8 million and $826.4 million,
respectively,  or 55.8%, 55.3% and 59.5%, respectively,  of its patient revenues
from  government  reimbursement  programs.   Patient  revenues  from  government
reimbursement  programs during these periods  consisted of approximately  $225.6
million,  $387.2 million and $516.7 million,  or 33.5%, 34.0% and 37.2% of total
patient revenues,  respectively, from Medicare and approximately $150.8 million,
$242.6 million and $309.7 million,  respectively,  or 22.3%,  21.3% and 22.3% of
total patient revenues, respectively, from Medicaid. During the six months ended
June 30, 1996 and 1997,  IHS  derived  approximately  $275.9  million and $301.4
million, respectively, or 43.0% and 33.5%, respectively, of its patient revenues
from private pay sources and  approximately  $365.8 million and $598.2  million,
respectively,  or 57.0% and 66.5%,  respectively,  of its patient  revenues from
government   reimbursement   programs.    Patient   revenues   from   government
reimbursement  programs during these periods  consisted of approximately  $211.8
million and $442.1  million,  respectively,  or 33.0% and 49.1% of total patient
revenues,  respectively,  from  Medicare and  approximately  $154.0  million and
$156.1  million,  respectively,  or 24.0% and 17.4% of total  patient  revenues,
respectively,  from  Medicaid.  The increase in the  percentage  of revenue from
government  reimbursement  programs is due to the higher  level of Medicare  and
Medicaid patients serviced by the respiratory therapy,  rehabilitative  therapy,
home healthcare and mobile diagnostic companies acquired in 1994, 1995 and 1996.


     On a pro forma basis after giving effect to the Merger,  the acquisition of
First American (which derives  substantially all its revenues from Medicare) and
the ILC Sale,  during the years ended  December  31, 1995 and 1996,  IHS derived
approximately  $585.3  million and $704.5  million,  respectively,  or 31.4% and
33.5%,  respectively,  of its  patient  revenues  from  private  pay sources and
approximately $1.3 billion and $1.4 billion,  respectively,  or 68.6% and 66.5%,
respectively,  of its patient revenues from government  reimbursement  programs.
Pro forma patient revenues from government  reimbursement  programs during these
periods consisted of approximately  $1.0 billion and $1.0 billion,  or 54.0% and
49.7%,  respectively,  from Medicare and approximately $271.4 million and $353.2
million, respectively, or 14.6% and 16.8%, respectively, from Medicaid. On a pro
forma basis after giving effect to the Merger, the acquisition of First American
and the ILC Sale,  during  the six  months  ended  June 30,  1996 and 1997,  IHS
derived approximately $329.3 million and $390.5 million,  respectively, or 32.5%
and 35.3%,  respectively,  of its patient  revenues from private pay sources and
approximately  $684.6  million and $716.4  million,  respectively,  or 67.5% and
64.7%,  respectively,  of its patient  revenues  from  government  reimbursement
programs.  Pro forma patient  revenues from  government  reimbursement  programs
during  these  periods  consisted  of  approximately  $512.9  million and $537.4
million,  or 50.6% and 48.5%,  respectively,  from  Medicare  and  approximately
$171.7  million  and  $179.0   million,   respectively,   or  16.9%  and  16.2%,
respectively, from Medicaid. 

     IHS'  experience  has  been  that  Medicare  patients  constitute  a higher
percentage of an MSU program's  initial  occupancy than they do once the program
matures.  However,  as  IHS'  marketing  program  to  private  pay  patients  is
implemented  in the new  MSUs,  the  number of  private  pay  patients  in those
programs has traditionally  increased.  In addition,  IHS received payments from
third parties for its management services, which constituted approximately 5.3%,
3.4%, 3.2%, 3.2% and 2.1% of total net revenues for the years ended December 31,
1994,  1995  and  1996  and the  six  months  ended  June  30,  1996  and  1997,
respectively.

     Gross third party payor settlements receivable,  primarily from federal and
state governments (i.e., Medicare and Medicaid cost reports), were $36.2 million
at June 30,  1997,  as compared to $42.6  million at December  31,  1996,  $33.0
million  at  December  31,  1995  and  $22.6   million  at  December  31,  1994.
Approximately  $10.8  million,  or 30%,  of the third  party  payor  settlements
receivable, primarily from


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Federal and state governments,  at June 30, 1997 represent the costs for its MSU
patients which exceed regional  reimbursement limits established under Medicare,
as compared to  approximately  $15.6  million,  or 37%,  at December  31,  1996,
approximately $7.6 million,  or 23%, at December 31, 1995 and approximately $6.2
million, or 27%, at December 31, 1994.

     IHS'  cost  of  care  for  its  MSU  patients  generally  exceeds  regional
reimbursement  limits  established  under  Medicare.  The  success  of IHS'  MSU
strategy  depends in part on its ability to obtain per diem rate  approvals  for
costs  which  exceed  the  Medicare  established  per diem  rate  limits  and by
obtaining  waivers of these  limitations.  IHS has submitted waiver requests for
225 cost reports, covering all cost report periods through December 31, 1996. To
date,  final action has been taken by HCFA on 221 waiver requests  covering cost
report periods  through  December 31, 1995. IHS' final rates as approved by HCFA
represent  approximately  95% of the requested  rates as submitted in the waiver
requests.  There can be no assurance,  however, that IHS will be able to recover
its excess costs under any waiver requests which may be submitted in the future.
IHS' failure to recover  substantially  all these  excess costs would  adversely
affect its results of operations and could adversely affect its MSU strategy.

     Both  private  third party and  governmental  payors have  undertaken  cost
containment  measures  designed to limit  payments made to healthcare  providers
such as IHS.  Furthermore,  government  programs  are subject to  statutory  and
regulatory  changes,  retroactive rate adjustments,  administrative  rulings and
government  funding  restrictions,  all of  which  may  materially  increase  or
decrease the rate of program payments to facilities managed and operated by IHS.
There can be no assurance that payments under governmental  programs will remain
at levels  comparable to present levels or will, in the future, be sufficient to
cover the  costs  allocable  to  patients  participating  in such  programs.  In
addition,  there can be no assurance that facilities owned, leased or managed by
IHS  now  or in  the  future  will  initially  meet  or  continue  to  meet  the
requirements for participation in such programs. IHS could be adversely affected
by the  continuing  efforts of  governmental  and private  third party payors to
contain  the  amount of  reimbursement  for  healthcare  services.  The May 1997
balanced  budget  agreement  between the  President  and  Congress  contemplated
changing  Medicare  payments  for skilled  nursing  facilities  and home nursing
services from a  cost-reimbursement  system to a prospective payment system. The
Balanced  Budget Act of 1997,  enacted in August  1997,  provides,  among  other
things, for a prospective  payment system for home nursing to be implemented for
cost  reporting  periods  beginning on or after  October 1, 1999, a reduction in
current cost  reimbursement  for home  healthcare  pending  implementation  of a
prospective payment system,  reductions  (effective January 1, 1998) in Medicare
reimbursement for oxygen and oxygen equipment for home respiratory therapy and a
shift of the bulk of home health coverage from Part A to Part B of Medicare. The
failure to implement a prospective  payment system for home nursing  services in
the next  several  years could  adversely  affect IHS'  post-acute  care network
strategy.  In an attempt to limit the federal and state budget  deficits,  there
have been, and IHS expects that there will continue to be, a number of proposals
to limit Medicare and Medicaid reimbursement for healthcare services. IHS cannot
at this time predict whether this  legislation or any other  legislation will be
adopted or, if adopted and  implemented,  what effect,  if any, such legislation
will have on IHS.  See  "Risk  Factors - Risk of  Adverse  Effect of  Healthcare
Reform."


GOVERNMENT REGULATION

     The healthcare  industry is subject to extensive  federal,  state and local
statutes  and  regulations.  The  regulations  include  licensure  requirements,
reimbursement  rules and standards  and levels of services and care.  Changes in
applicable  laws and  regulations  or new  interpretations  of existing laws and
regulations could have a material adverse effect on licensure of IHS facilities,
eligibility  for  participation  in  federal  and  state  programs,  permissible
activities,  costs  of doing  business,  or the  levels  of  reimbursement  from
governmental,  private and other  sources.  Political,  economic and  regulatory
influences  are  subjecting  the  healthcare  industry  in the United  States to
fundamental  change.  It is not  possible  to predict  the  content or impact of
future  legislation  and  regulations  affecting  the  healthcare  industry.  In
addition,  in the conduct of its business IHS'  operations are subject to review
by  federal  and state  regulatory  agencies.  In the  course of these  reviews,
problems are from time to time identified by these agencies. Although IHS has to
date  been  able to  resolve  these  problems  in a manner  satisfactory  to the
regulatory  agencies  without a material  adverse effect on IHS, there can be no
assurance  that  IHS  will be able to do so in the  future.  See  "Risk  Factors
Uncertainty of Government Regulation."


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     Most states in which IHS  operates or is studying  expansion  possibilities
have statutes  which require that prior to the addition or  construction  of new
beds, the addition of new services or certain capital  expenditures in excess of
defined  levels,  IHS must obtain a certificate of need ("CON") which  certifies
that the  state  has made a  determination  that a need  exists  for such new or
additional   beds,   new   services   or  capital   expenditures.   These  state
determinations  of need or CON  programs  are  designed to comply  with  certain
minimum federal standards and to enable states to participate in certain federal
and state health related programs. Elimination or relaxation of CON requirements
may  result in  increased  competition  in such  states  and may also  result in
increased  expansion  possibilities  in such states.  Of the states in which IHS
operates, the following require CONs for the facilities that are owned, operated
or managed by IHS: Alabama,  Colorado,  Delaware,  Florida,  Georgia,  Illinois,
Indiana,  Iowa,  Kentucky,   Louisiana,   Maryland,   Massachusetts,   Michigan,
Mississippi,  Missouri, Nevada, New Hampshire, New Jersey, North Carolina, Ohio,
South  Carolina,  Tennessee,  Texas,  Virginia,  Washington,  West  Virginia and
Wisconsin.  To date the  conversion  of geriatric  care beds to MSU beds has not
required a CON.

     IHS'  facilities  are also subject to licensure  regulations.  Each of IHS'
geriatric  care  facilities  is  licensed  as a  skilled  care  facility  and is
certified as a provider  under the Medicare  program and most are also certified
by the state in which they are located as a provider under the Medicaid  program
of that state.  IHS believes it is in substantial  compliance  with all material
statutes and regulations applicable to its business. In addition, all healthcare
facilities are subject to various local building codes and other ordinances.

     State and local  agencies  survey all  geriatric  care centers on a regular
basis to  determine  whether such centers are in  compliance  with  governmental
operating and health  standards and conditions for  participation  in government
medical assistance programs. Such surveys include reviews of patient utilization
of  healthcare  facilities  and  standards  for patient  care.  IHS endeavors to
maintain and operate its  facilities in compliance  with all such  standards and
conditions.  However,  in the ordinary  course of its business,  IHS' facilities
receive  notices of deficiencies  for failure to comply with various  regulatory
requirements.  Generally,  the facility and the reviewing agency will agree upon
the measures to be taken to bring the facility into  compliance  with regulatory
requirements.  In some cases or upon repeat violations, the reviewing agency may
take adverse  actions  against a facility,  including  the  imposition of fines,
temporary suspension of admission of new patients to the facility, suspension or
decertification from participation in the Medicare or Medicaid programs, and, in
extreme circumstances, revocation of a facility's license. These adverse actions
may  adversely  affect  the  ability  of the  facility  to operate or to provide
certain  services and its eligibility to participate in the Medicare or Medicaid
programs.  In  addition,   such  adverse  actions  may  adversely  affect  other
facilities operated by IHS. See "- Federal and State Assistance Programs."


     Effective July 1, 1995,  HCFA  implemented  stricter  guidelines for annual
state  surveys of long-term  care  facilities.  These  guidelines  eliminate the
ability of operators to appeal the scope and  severity of any  deficiencies  and
grant state regulators the authority to impose new remedies,  including monetary
penalties, denial of payments and termination of the right to participate in the
Medicare and/or Medicaid programs.  IHS believes these new guidelines may result
in an  increase  in the number of  facilities  that will not be in  "substantial
compliance"  with  the  regulations  and,  as a  result,  subject  to  increased
disciplinary actions and remedies,  including admission holds and termination of
the right to participate in the Medicare  and/or Medicaid  programs.  In ranking
facilities,  survey  results  subsequent  to October 1990 are  considered.  As a
result, IHS' acquisition of poorly performing  facilities could adversely affect
IHS' business to the extent remedies are imposed at such facilities.

     In September 1997, President Clinton, in an attempt to curb Medicare fraud,
imposed a moratorium on the certification  under Medicare of new home healthcare
companies,  which moratorium is expected to last  approximately six months,  and
implemented  rules requiring home  healthcare  providers to reapply for Medicare
certification  every three years.  In  addition,  HCFA will double the number of
detailed audits of home healthcare providers it completes each year and increase
by 25% the number of home  healthcare  claims it reviews  each year.  IHS cannot
predict what effect,  if any, these new rules will have on IHS' business and the
expansion of its home healthcare operations.


     The  operations  of IHS' home  healthcare  branches are subject to numerous
federal and state laws governing pharmacies,  nursing services, therapy services
and certain types of home health agency  activities.  Certain of IHS'  employees
are subject to state laws and regulations governing the professional


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practice of respiratory  therapy,  physical,  occupational and speech therapies,
pharmacy and nursing.  The failure to obtain, to renew or to maintain any of the
required  regulatory  approvals  or licenses  could  adversely  affect IHS' home
healthcare business and could prevent the branch involved from offering products
and  services to patients.  Generally,  IHS is required to be licensed as a home
health  agency in those states in which it provides  traditional  home health or
home nursing services.  IHS' ability to expand its home healthcare services will
depend upon its ability to obtain  licensure as a home health agency,  which may
be restricted by state CON laws.

     Various Federal and state laws regulate the relationship  between providers
of healthcare  services and physicians or others able to refer medical services,
including employment or service contracts,  leases and investment relationships.
These laws include the fraud and abuse  provisions  of Medicare and Medicaid and
similar state statutes (the "Fraud and Abuse Laws"), which prohibit the payment,
receipt,  solicitation  or  offering  of any  direct  or  indirect  remuneration
intended to induce the  referral  of  Medicare  or Medicaid  patients or for the
ordering  or  providing  of  Medicare or  Medicaid  covered  services,  items or
equipment.  Violations  of these  provisions  may  result in civil and  criminal
penalties  and/or  exclusion from  participation in the Medicare and/or Medicaid
programs  and from state  programs  containing  similar  provisions  relating to
referrals of privately  insured  patients.  The  Department  of Health and Human
Services ("HHS") and other federal  agencies have  interpreted  these provisions
broadly to include the payment of anything of value to influence the referral of
Medicare  or  Medicaid  business.  HHS has  issued  regulations  which set forth
certain "safe harbors,"  representing  business  relationships and payments that
can safely be  undertaken  without  violation  of the Fraud and Abuse  Laws.  In
addition,  certain Federal and state  requirements  generally  prohibit  certain
providers  from  referring  patients to certain  types of entities in which such
provider has an ownership or investment interest or with which such provider has
a compensation arrangement,  unless an exception is available. IHS considers all
applicable laws in planning marketing activities and exercises care in an effort
to structure its  arrangements  with  healthcare  providers to comply with these
laws.  However,  there can be no assurance  that all of IHS'  existing or future
arrangements will withstand scrutiny under the Fraud and Abuse Laws, safe harbor
regulations  or other state or federal  legislation or  regulations,  nor can it
predict  the  effect of such  rules and  regulations  on these  arrangements  in
particular or on IHS' operations in general.

     IHS' healthcare  operations generate medical waste that must be disposed of
in  compliance  with  Federal,  state and local  environmental  laws,  rules and
regulations.  IHS'  operations are also subject to compliance with various other
environmental  laws, rules and  regulations.  Such compliance has not materially
affected,  and IHS anticipates that such compliance will not materially  affect,
IHS' capital expenditures,  earnings or competitive position, although there can
be no assurance to that effect.


     In addition to extensive existing governmental healthcare regulation, there
are  numerous  initiatives  on the  federal and state  levels for  comprehensive
reforms affecting the payment for and availability of healthcare services. It is
not clear at this time what  proposals,  if any, will be adopted or, if adopted,
what effect such proposals  would have on IHS'  business.  Aspects of certain of
these  healthcare  proposals,  such as cutbacks  in the  Medicare  and  Medicaid
programs,  reductions  in Medicare  reimbursement  rates and/or  limitations  on
reimbursement  rate  increases,  containment  of healthcare  costs on an interim
basis by means  that  could  include a  short-term  freeze on prices  charged by
healthcare   providers,   and  permitting   greater  state  flexibility  in  the
administration  of  Medicaid,  could  adversely  affect IHS.  See "Risk  Factors
Uncertainty of Government  Regulation"  and "- Sources of Revenue." There can be
no assurance that currently  proposed or future healthcare  legislation or other
changes in the  administration  or  interpretation  of  governmental  healthcare
programs  will not have an adverse  effect on IHS.  Concern  about the potential
effects of the proposed  reform  measures has  contributed  to the volatility of
prices  of  securities  of  companies  in  healthcare  and  related  industries,
including  IHS,  and may  similarly  affect the price of IHS Common Stock in the
future.  IHS cannot  predict the ultimate  timing or effect of such  legislative
efforts  and no  assurance  can be given that any such  efforts  will not have a
material  adverse effect on IHS'  business,  results of operations and financial
condition. 


FEDERAL AND STATE ASSISTANCE PROGRAMS

     Substantially all of IHS' geriatric care facilities are currently certified
to receive  benefits as a skilled  nursing  facility  provided  under the Health
Insurance for the Aged and Disabled Act (commonly referred to


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as  "Medicare"),  and  substantially  all  are  also  certified  under  programs
administered  by the  various  states  using  federal and state funds to provide
medical  assistance to qualifying needy individuals  ("Medicaid").  Both initial
and continuing  qualification  of a skilled nursing care facility to participate
in such  programs  depend  upon many  factors  including,  among  other  things,
accommodations,  equipment,  services, patient care, safety, personnel, physical
environment, and adequate policies, procedures and controls.

     Services under  Medicare  consist of nursing care,  room and board,  social
services,  physical and occupational therapies,  drugs,  biologicals,  supplies,
surgical, ancillary diagnostic and other necessary services of the type provided
by extended  care or acute care  facilities.  Under the  Medicare  program,  the
federal  government  pays the  reasonable  direct and indirect  allowable  costs
(including  depreciation  and interest) of the services  furnished and,  through
September  30,  1993,  provided a rate of return on equity  capital  (as defined
under  Medicare).  However,  IHS'  cost of care for its MSU  patients  generally
exceeds  regional  reimbursement  limits  established  under  Medicare.  IHS has
submitted  waiver  requests to recover  these  excess  costs.  See "- Sources of
Revenue." There can be no assurance,  however,  that IHS will be able to recover
its excess costs under the pending waiver  requests or under any waiver requests
which may be submitted in the future. IHS' failure to recover  substantially all
these excess costs would  adversely  affect its results of operations  and could
adversely  affect its MSU  strategy.  Even  though IHS' cost of care for its MSU
patients  generally  exceeds regional  reimbursement  limits  established  under
Medicare  for nursing  homes,  IHS' cost of care is still lower than the cost of
such care in an acute care hospital.

     The Medicare  program  reimburses  for home  healthcare  services under two
basic systems: cost-based and charge-based.  Under the cost-based system, IHS is
reimbursed  at  the  lowest  of  IHS'  reimbursable  costs  (based  on  Medicare
regulations),  cost limits  established  by HCFA or IHS' charges.  While a small
amount of corporate  level overhead is permitted as part of  reimbursable  costs
under Medicare  regulations,  such costs consist  predominantly  of expenses and
charges directly incurred in providing the related services,  and cannot include
any  element  of profit or net  income to IHS.  Under the  charge-based  system,
Medicare  reimburses IHS on a  "prospective  payment"  basis,  which consists in
general of either a fixed fee for a specific  service or a fixed per diem amount
for providing  certain  services.  As a result,  IHS can generate  profit or net
income from Medicare  charge-based  revenues by providing covered services in an
efficient,  cost-effective  manner.  All  nursing  services  (including  related
products)  are  Medicare  cost-based  reimbursed,  except for  nursing  services
provided  to  hospice  patients.  Hospice  care and all  other  home  healthcare
services  (including  non-nursing  related  products) are Medicare  charge-based
reimbursed.

     The  Balanced  Budget  Act  of  1997  provides,  among  other  things,  for
implementation  of a prospective  payment  system for home nursing  services for
cost reporting periods beginning on or after October 1, 1999.  Implementation of
a prospective  payment system will be a critical  element to the success of IHS'
expansion into home nursing services.  Based upon prior  legislative  proposals,
IHS believes  that a  prospective  payment  system  would most likely  provide a
healthcare provider a predetermined rate for a given service, and that providers
with costs below the predetermined  rate will be entitled to keep some or all of
this difference. Under such a prospective payment system, the efficient operator
will be rewarded. Since the largest component of home healthcare costs is labor,
which  is  basically   fixed,  IHS  believes  the   differentiating   factor  in
profitability  will be  administrative  costs. As a result of the First American
Acquisition,  IHS, as a large  provider of home  nursing  services,  believes it
should be able to achieve  administrative  efficiencies  compared with the small
providers which currently dominate the home healthcare industry,  although there
can be no assurance  it will be able to do so.  There can be no  assurance  that
Medicare will implement a prospective  payment system for home nursing  services
in the next  several  years or at all.  The  inability  of IHS to  provide  home
healthcare services at a cost below the established  Medicare fee schedule could
have a  material  adverse  effect on IHS'  home  healthcare  operations  and its
post-acute care network.  See "Risk Factors Risk of Adverse Effect of Healthcare
Reform."

     Under the various Medicaid  programs,  the federal  government  supplements
funds provided by the participating  states for medical assistance to qualifying
needy individuals. The programs are administered by the applicable state welfare
or social service agencies. Although Medicaid programs vary from state to state,
typically  they provide for the payment of certain  expenses,  up to established
limits.  The majority of the MSU programs are not required to participate in the
various state Medicaid programs.  However,  should IHS' MSU programs be required
to admit Medicaid patients as a condition to contin-


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ued  participation  in such programs by the facility in which the MSU program is
located,  IHS' results of operations could be adversely affected since IHS' cost
of care in its MSU  programs  is  substantially  in  excess  of  state  Medicaid
reimbursement rates.


     Funds received by IHS under Medicare and Medicaid are subject to audit with
respect  to  the  proper   preparation   of  annual  cost   reports  upon  which
reimbursement  is based.  Such audits can result in  retroactive  adjustments of
revenue from these  programs,  resulting in either amounts due to the government
agency from IHS or amounts due IHS from the government agency.


     Both the  Medicare  and  Medicaid  programs  are subject to  statutory  and
regulatory   changes,   administrative   rulings,   interpretations   of  policy
determinations by insurance  companies acting as Medicare fiscal  intermediaries
and governmental funding  restrictions,  all of which may materially increase or
decrease  the rate of program  payments to  healthcare  facilities.  Since 1985,
Congress  has  consistently  attempted  to limit the growth of federal  spending
under  the  Medicare  and  Medicaid  programs.  IHS can give no  assurance  that
payments under such programs will in the future remain at a level  comparable to
the  present  level or be  sufficient  to cover the  operating  and fixed  costs
allocable to such patients.  Changes in  reimbursement  levels under Medicare or
Medicaid and changes in applicable governmental  regulations could significantly
affect  IHS'  results  of  operations.  It is  uncertain  at this  time  whether
additional legislation on healthcare reform will be implemented or whether other
changes in the  administration  or  interpretation  of  governmental  healthcare
programs  will  occur.   There  can  be  no  assurance  that  future  healthcare
legislation  or  other  changes  in  the  administration  or  interpretation  of
governmental  healthcare programs will not have an adverse effect on the results
of  operations  of IHS. IHS cannot at this time predict  whether any  healthcare
reform legislation will be adopted or, if adopted and implemented,  what effect,
if any,  such  legislation  will have on IHS. See "Risk  Factors Risk of Adverse
Effect of Healthcare Reform."


COMPETITION


     The healthcare  industry is highly competitive and is subject to continuing
changes in the  provision  of services and the  selection  and  compensation  of
providers.  IHS competes on a local and regional  basis with other  providers on
the basis of the  breadth  and  quality  of its  services,  the  quality  of its
facilities  and,  to a limited  extent,  price.  IHS also  competes  with  other
providers in the  acquisition  and  development  of  additional  facilities  and
service  providers.  IHS' current and potential  competitors  include  national,
regional and local operators of geriatric care facilities,  acute care hospitals
and  rehabilitation  hospitals,  extended care centers,  retirement  centers and
community  home health  agencies  and similar  institutions,  many of which have
significantly  greater financial and other resources than IHS. In addition,  IHS
competes with a number of tax-exempt  nonprofit  organizations which can finance
acquisitions  and  capital   expenditures  on  a  tax-exempt  basis  or  receive
charitable contributions  unavailable to IHS. There can be no assurance that IHS
will not  encounter  increased  competition  which  could  adversely  affect its
business,  results of  operations  or  financial  condition.  See "Risk  Factors
Competition."


     The geriatric care facilities operated and managed by IHS primarily compete
on a local and  regional  basis with other  skilled  care  providers.  IHS' MSUs
primarily compete on a local basis with acute care and long-term care hospitals.
In addition,  some skilled nursing facilities have developed units which provide
a greater level of care than the care  traditionally  provided by nursing homes.
The degree of success with which IHS' facilities compete varies from location to
location and depends on a number of factors.  IHS believes that the  specialized
services and care  provided,  the quality of care  provided,  the reputation and
physical  appearance  of  facilities  and, in the case of private pay  patients,
charges for services,  are significant  competitive  factors.  In light of these
factors,  IHS  seeks to meet  competition  in each  locality  by  improving  the
appearances  of,  and the  quality  and  types  of  services  provided  at,  its
facilities,  establishing a reputation within the local medical  communities for
providing competent care services,  and by responding  appropriately to regional
variations in demographics and tastes.  There is limited, if any, competition in
price with  respect to  Medicaid  and  Medicare  patients,  since  revenues  for
services to such patients are strictly  controlled  and based on fixed rates and
cost  reimbursement  principles.  Because IHS' facilities compete primarily on a
local and regional basis rather than a national basis, the competitive  position
of IHS varies from facility to facility depending upon the types of services and


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quality of care  provided  by  facilities  with  which  each of IHS'  facilities
compete,  the  reputation of the facilities  with which each of IHS'  facilities
compete,  and,  with  respect  to  private  pay  patients,  the  cost of care at
facilities with which each of IHS' facilities compete.

     The home  healthcare  market is highly  competitive  and is divided among a
large  number of  providers,  some of which are national  providers  but most of
which are either  regional or local  providers.  IHS  believes  that the primary
competitive factors are availability of personnel, the price of the services and
quality  considerations  such as  responsiveness,  the technical  ability of the
professional staff and the ability to provide comprehensive services.

     IHS also competes with other  healthcare  companies  for  acquisitions  and
management contracts. There can be no assurance that additional acquisitions can
be made and additional management contracts can be obtained on favorable terms.


EMPLOYEES


     As of August 31, 1997, IHS had  approximately  57,000 full-time and regular
part-time  employees.  Full-time and regular  part-time  service and maintenance
employees at 17 facilities,  totaling approximately 1,300 employees, are covered
by  collective  bargaining   agreements.   IHS'  corporate  staff  consisted  of
approximately  1,900 people at such date.  IHS believes its  relations  with its
employees are good. 

     IHS seeks the highest  quality of  professional  staff  within each market.
Competition  in the  recruitment  of  personnel  in the  healthcare  industry is
intense,  particularly  with  respect to nurses.  Many areas are already  facing
nursing  shortages,  and it is expected that the shortages  will increase in the
future.  Although  IHS has, to date,  been  successful  in hiring and  retaining
nurses  and  rehabilitation  professionals,  IHS in the  future  may  experience
difficulty in hiring and retaining nurses and rehabilitation professionals.  IHS
believes that its future success and the success of its MSU programs will depend
in large part upon its continued ability to hire and retain qualified personnel.


INSURANCE

     Healthcare  companies are subject to medical  malpractice,  personal injury
and other  liability  claims  which are  generally  covered  by  insurance.  IHS
maintains   liability  insurance  coverage  in  amounts  deemed  appropriate  by
management  based  upon  historical  claims  and the  nature  and  risks  of its
business.  There  can be no  assurance  that a  future  claim  will  not  exceed
insurance  coverage or that such  coverage  will  continue to be  available.  In
addition,  any substantial  increase in the cost of such insurance could have an
adverse effect on IHS' business, results of operations and financial condition.



LEGAL PROCEEDINGS

     IHS is from time to time  involved in various legal  proceedings.  Although
IHS does not believe that any currently  pending  proceeding will materially and
adversely  affect  IHS,  there can be no  assurance  that any  current or future
proceeding will not have a material adverse effect on IHS' financial position or
results of operations.


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                               BUSINESS OF ROTECH


GENERAL


     Rotech  Medical   Corporation   ("Rotech")   provides   comprehensive  home
healthcare  and primary  care  physician  services,  principally  to patients in
non-urban  areas.  RoTech  operates 631  locations in 36 states.  RoTech's  home
healthcare business provides a diversified range of products and services,  with
emphasis on home  respiratory,  home medical  equipment  and  infusion  therapy.
RoTech has pursued an aggressive acquisition strategy since 1988, which included
in  fiscal  1997  acquisitions  of 174  locations  of  smaller  home  healthcare
companies  and the  opening  of 49 new  locations.  Current  industry  estimates
indicate  that  approximately  half of the  nation's  home  healthcare  industry
remains fragmented and is run by either single operators or small, local chains.
These  smaller  providers  are RoTech's main  competition  and main  acquisition
opportunities.  RoTech  plans to continue to enter new home  healthcare  markets
through  acquisition or start-up as competitive and pricing pressures  encourage
consolidation and economies of scale.


     Recent data  suggests  that there is a shortage of  healthcare  services in
non-urban  markets.  According  to the  United  States  Census  Bureau,  in 1990
non-urban  areas of the United States  accounted for roughly 25% of the national
population,  or  approximately  62 million  people.  However,  according  to the
American Medical  Association,  just 11% of physicians,  or approximately 75,000
physicians,  practice in  non-metropolitan  markets.  This data  indicates  that
non-urban markets are underserved,  and suggests that there may be opportunities
for  improvement  in access to primary  care  physicians,  as well as  specialty
services.  RoTech believes that these needs result in significant  opportunities
for companies such as RoTech,  which can attract,  retain and network physicians
in non-urban settings while offering ancillary services such as home healthcare,
to become a full-service non-institutional based primary healthcare provider.


OPERATING AND EXPANSION STRATEGY

     RoTech was founded in 1981 to provide  home  respiratory  and home  medical
equipment products and services to patients in Florida. With its founders' roots
in pharmacy and pharmaceutical  sales,  RoTech's marketing  directive has always
been to provide information to primary care physicians regarding the utilization
of home  healthcare  techniques,  products and services for their  patient base.
Providing  information  to these  physicians as to disease  management  leads to
earlier  identification  and  treatment of  patients,  enhancing  the  patient's
quality of life and  longevity.  RoTech has not targeted  specialists,  as their
patients are more acute and since  specialists  have  historically  been tied to
hospital  systems,  which  results  in higher  hospitalization  rates.  RoTech's
marketing is directed at identifying  patients of primary care physicians  prior
to  hospitalization  and prior to an acuity level that would require utilizing a
specialist.

     RoTech's  strategy is to develop  integrated  healthcare  delivery  systems
through the acquisition of smaller local home healthcare  companies in non-urban
areas.  RoTech targets  non-urban markets of smaller cities and rural areas, due
to  the  dominance  of  primary  care  physicians  in  these  markets,   reduced
competition  and a tendency  to care for  patients in the home  setting.  RoTech
believes that acquisitions of home healthcare  companies will continue to expand
the base of relationships with primary care physicians in these markets. Primary
care physicians in these markets typically have long-standing relationships with
loyal patient bases. These physicians are usually solo practitioners and are the
key decision  makers in the treatment of their  patients.  RoTech  believes that
making home healthcare  products and services available to these physicians will
result in better, less expensive healthcare that provides an improved quality of
life for the patients and their caregivers in these communities.

SALES AND MARKETING

     RoTech  believes that the sales and marketing  skills of its employees have
been  instrumental in its growth to date and are critical to its future success.
RoTech  emphasizes to its  employees  the  importance of patient base growth and
retention  by  providing  quality  service  to  physicians  and their  patients.
Approximately  28% of  RoTech's  employees  are  actively  involved in sales and
marketing.  The sales  representatives  employed by RoTech include registered or
certified respiratory  therapists,  registered pharmacists and registered nurses
who market  all of  RoTech's  services  and  products  and are  responsible  for
maintaining and expanding  RoTech's  relationships  with  physicians,  targeting
primary care physicians in non-urban areas.


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     RoTech provides formal marketing, training, product and service information
to all of its technical and sales personnel so they can communicate  effectively
with  physicians  about  RoTech's  services and  products.  These  personnel are
instructed  on  methods  of  serving  the  physicians  by  providing  them  with
information on new procedures and medical technologies. Each technical and sales
person must attend periodic seminars conducted on a company-wide  basis.  RoTech
emphasizes the  cross-marketing of all its products to physicians with which its
salespeople have already developed professional  relationships.  RoTech believes
its marketing  approach  allows the primary care physician to identify acute and
chronic  patients  earlier  in the  disease  process.  Treatment  is done at the
primary care level and  accordingly at less cost than the advanced  treatment of
the disease by specialists or in a hospital setting.


REIMBURSEMENT FOR SERVICES

     A substantial percentage of RoTech's revenue is attributable to third-party
payors, including private insurers,  Medicare and, to a lesser extent, Medicaid.
RoTech has  substantial  expertise at processing  claims and continues to create
and  improve  systems to manage  third-party  reimbursements,  to produce  clean
claims  and obtain  timely  reimbursements  by  third-party  payors.  RoTech has
developed distinct billing and collection  departments for Medicare and Medicaid
reimbursements  and for private  insurance company claims which are supported by
customized  computer systems.  These departments work closely with reimbursement
officers at branch locations and third-party  payors and are responsible for the
review of patient coverage, the adequacy and timeliness of documentation and the
follow-up  with   third-party   payors  to  expedite   reimbursement   payments.
Reimbursement  from the  Medicare  program as a  percentage  of  RoTech's  total
operating revenue  approximated 48% for fiscal 1996, 49% for fiscal 1995 and 35%
for fiscal 1994.

     RoTech has achieved  increased  operating  revenue in home  respiratory and
other  home  medical  equipment  operations  despite  increased  regulation  and
corresponding reimbursement reductions.  While the increased regulation tends to
reduce the amount of reimbursement from government sources for individual cases,
RoTech  believes the continued  increased  regulation  also  benefits  RoTech by
reducing  the   competition   from  joint  ventures  and  fee  revenue   sharing
arrangements, which RoTech has historically avoided.

     RoTech's  levels of operating  revenue and  profitability  of RoTech,  like
those of other healthcare  companies,  are affected by the continuing efforts of
third-party  payors to  contain or reduce the costs of  healthcare  by  lowering
reimbursement   rates,   increasing  case  management  review  of  services  and
negotiating reduced contract pricing.  Home healthcare,  which is generally less
costly to third-party payors than hospital-based care, has benefitted from those
cost  containment  objectives.  However,  as expenditures in the home healthcare
market continue to grow,  initiatives  aimed at reducing the costs of healthcare
delivery at non-hospital sites are increasing. Changes in reimbursement policies
by third-party  payors, or the reduction in or elimination of such reimbursement
programs,  could have a material  adverse impact on RoTech's  revenues.  Various
state and federal health reform  initiatives  may lead to additional  changes in
reimbursement programs.


PRODUCTS AND SERVICES

     HOME HEALTHCARE PRODUCTS AND SERVICES

     Home Respiratory Therapy and Equipment

     RoTech provides a variety of home respiratory therapy products and services
on a monthly  rental or sale  basis.  Home  respiratory  therapy  and  equipment
represented  42%, 42% and 49% of RoTech's  revenues for the years ended July 31,
1995 and 1996 and the nine months  ended April 30,  1997,  respectively.  RoTech
focuses on serving  patients of primary care physicians  with chronic  pulmonary
diseases in their pre-acute stages.  Early identification and retention of these
patients at the primary  care level  reduces the cost of  healthcare  and should
improve  the quality of life of the  patients  and their  families.  RoTech also
enjoys patient  retention  post-hospitalization  at the patient's or physician's
request  and  does not rely on  referrals  of  patients  by  hospital  discharge
planners or case managers.  Nationwide  home  respiratory  market  revenues were
approximately $1.6 billion in 1993.


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     RoTech's home respiratory care product line includes oxygen  concentrators,
portable  liquid  oxygen  systems,   nebulizers  and  ventilator  care.   Oxygen
concentrators  extract  oxygen  from room air and  generally  provide  the least
expensive  supply of oxygen for  patients  who  require a  continuous  supply of
oxygen,  are not ambulatory and who do not require excessive flow rates.  Liquid
oxygen  systems store oxygen under  pressure in a liquid form. The liquid oxygen
is stored in a stationary unit that can be easily refilled at the patient's home
and can be used to fill a portable device that permits greatly  enhanced patient
mobility. Nebulizers are devices which aerosolize medications,  allowing them to
be inhaled directly into the patient's lungs. Ventilator therapy is used for the
individual that suffers from respiratory  failure by mechanically  assisting the
individual to breathe.  RoTech  provides  technicians who deliver and/or install
the respiratory care equipment, instruct the patient in its use, refill the high
pressure  and  liquid  oxygen  systems  as  necessary  and  provide   continuing
maintenance of the equipment.

     Home Medical Equipment and Supplies

     RoTech  provides a full line of  equipment  and  supplies  of home  medical
equipment and supplies for  convalescents,  including custom pieces required for
rehabilitation  patients.  Home medical equipment and supplies  represented 24%,
35% and 28% of RoTech's  revenues for the years ended July 31, 1995 and 1996 and
the nine months  ended April 30, 1997,  respectively.  Provision of home medical
equipment  enables  RoTech to  provide a  "one-stop  shopping"  presence  in its
non-urban  markets,  which is required  for full patient  service  satisfaction.
These  products  are  provided  on a monthly  rental or sale  basis and  include
wheelchairs,   hospital  beds,  walkers,  patient  lifts,  orthopedic  supplies,
catheters, syringes and bathroom aids.

     Home Infusion Therapy and Other Pharmacy Related Products and Services

     Home infusion therapy involves the administration of antibiotics, nutrients
or other medications intravenously, intramuscularly, subcutaneously or through a
feeding tube.  RoTech  focuses on providing  home  infusion  therapy to patients
prior to or in lieu of hospitalization,  which generally offers significant cost
savings and  preferable  logistics for patients,  their  families and caregivers
over  hospital-based  treatments.  RoTech believes that its marketing methods of
providing  information to primary care physicians on home infusion therapies and
the continuing evolution of related technological advances should enable further
growth of this  portion of the  business.  Focus on the  referring  primary care
physician   facilitates  the   identification  of  patients  requiring  subacute
antibiotic  treatments,  which  constitute 39% of RoTech's home infusion therapy
services performed.  Home infusion  therapies,  which accounted for 25%, 16% and
17% of RoTech's revenues for the years ended July 31, 1995 and 1996 and the nine
months ended April 30, 1997, respectively, include the following:

     Antibiotic Therapy - Antibiotic  therapy,  which represents the majority of
RoTech's home  infusion  therapy  revenues,  requires the infusion of antibiotic
drugs into the patient's  bloodstream to treat infections and diseases,  such as
osteomyelitis (bone infections), bacterial endocarditis (infection of the lining
around the heart), wound infections,  infections  associated with HIV/AIDS,  and
infections of the kidneys and urinary tract.  Antibiotics are generally believed
to be more effective when infused  directly into the bloodstream than when taken
orally.  These  treatments  can be  prescribed by primary care  physicians,  are
short-term in nature and recur occasionally.

     Enteral  Nutrition  Therapy - Enteral  nutrition therapy is administered to
patients  who  cannot  eat  as  a  result  of  an   obstruction   to  the  upper
gastrointestinal tract or because they are otherwise unable to be fed orally. As
with total parenteral  nutrition  therapy,  enteral  nutrition  therapy is often
administered over a long period.

     Pain  Management  and  Chemotherapy  -  Pain  management   therapy  is  the
administration  of pain  controlling  drugs to  terminally  or  chronically  ill
patients and is often administered in conjunction with intravenous chemotherapy.
Chemotherapy is the continuous or  intermittent  intravenous  administration  of
anti-cancer  drugs.  Chemotherapy  generally is  administered  periodically  for
several weeks or months.

     Total  Parenteral  Nutrition  Therapy - Total  parenteral  nutrition  (TPN)
therapy involves the intravenous  feeding of nutrients to patients with impaired
digestive  tracts  due  to  gastrointestinal  illnesses  or  conditions,  due to
underlying  conditions  including  cancer or HIV/AIDS.  TPN is usually longer in
duration than other forms of infusion therapy, and can be lifelong.


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     Other  Therapies.  Other  therapies  and services include therapies such as
congestive   heart  failure  therapy,  hydration  therapy  and  related  nursing
services.


     RoTech's home infusion  therapy business is dependent in large measure upon
physicians  continuing  to prescribe the  administration  of drugs and nutrients
through  intravenous and other infusion methods.  Orally  administered drugs and
alternative drug delivery systems may have an effect upon the demand for certain
infusion  therapies.  RoTech can predict  neither the  ultimate  impact of these
treatments  on RoTech's  business nor the nature of future  medical  advances or
their eventual impact on RoTech's business.


     PRIMARY CARE PHYSICIANS' PRACTICES

     RoTech has  acquired  primary  care  physician  practices  in the States of
Florida and  Mississippi.  RoTech  believes that it will be able to increase the
profitability  of these  individual  practices  through  economies  of scale and
greater  efficiencies,  and  that  its  centralized  billing  and  reimbursement
functions  will   typically   result  in  lower  costs  per  claim  and  quicker
reimbursement.  Physician practices  represented  approximately 9%, 7% and 7% of
RoTech's  revenues in the years ended July 31, 1995 and 1996 and the nine months
ended April 30, 1997, respectively.


GOVERNMENT REGULATION

     The home care industry is subject to extensive government regulation at the
federal  level  through the Medicare  program and at the state level through the
Medicaid program.  Medicare is a federally funded health insurance program which
provides  health  insurance  coverage  for  persons age 65 and older and certain
disabled persons,  and generally  provides  reimbursement at specified rates for
sales and rentals of specified  medical  equipment and  supplies,  provided such
equipment and supplies are determined to be medically  necessary by the treating
physician.  Medicaid  is  a  health  insurance  program  administered  by  state
governments which provides reimbursements for healthcare for certain financially
or medically needy persons regardless of age.

     RoTech is  subject  to  government  audits  of its  Medicare  and  Medicaid
reimbursement  claims and has not, to date,  experienced  any material loss as a
result of any such government  audits.  Under existing  federal law, the knowing
and willful offer or payment of any remuneration (including any kickback,  bribe
or rebate) of any kind to another  person to induce the  referral of Medicare or
Medicaid  beneficiaries for whom medical supplies and services may be reimbursed
by the Medicare or Medicaid programs is prohibited and could subject the parties
to such an arrangement to substantial  criminal and civil  penalties,  including
exclusion from participation in these programs,  for Medicare or Medicaid fraud.
The Office of Inspector  General of the  Department of Health and Human Services
("OIG")  has  promulgated   regulatory  "safe  harbors"  that  describe  certain
practices  and  business  arrangements  that comply with  Medicare  and Medicaid
regulations.  The OIG and law enforcement  authorities  have recently  increased
their  investigatory  efforts to determine  whether various  business  practices
constitute remuneration for, or to induce,  referrals.  Certain states have also
passed statutes and regulations that prohibit payments for referral of patients.
These laws vary significantly from state to state. The result of legislative and
regulatory efforts is an extra compliance challenge and, therefore, risk. RoTech
reached a settlement  with the U.S.  Attorney for the Middle District of Florida
in a civil  action  related  to  Medicare  claims  the  government  believes  it
erroneously paid between 1987 and 1989.  RoTech remains confident that it was in
compliance with all material  Medicare and other legal  requirements  related to
this matter. However, in an effort to reduce legal defense costs and to preserve
internal resources, RoTech paid $612,500 (approximately $380,000 on an after tax
basis) to resolve the matter. These monies represent a repayment of a portion of
the estimated disputed claims and related interest over approximately ten years.

     RoTech  received an inquiry  from the Medicaid  Department  of the State of
Mississippi  and  subsequently  received two subpoenas  from the OIG  concerning
RoTech's 1994 cost report for its Mississippi  Rural Health  Clinics.  RoTech is
cooperating fully with such inquiries.  There has been no statement of issues or
particular  concerns  giving RoTech  sufficient  information to permit RoTech to
determine the extent of financial  exposure,  if any. RoTech is not aware of any
material  error  in  the  one  year's  cost  report  under  inquiry,   following
consultation with its outside consultant, who also assisted in the prepa-


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ration and filing of the original report.  If any adjustments  occur, such would
likely relate only to Mississippi physician clinics for 1994. However,  Medicaid
and the OIG have the right to audit years  subsequent to 1994, and RoTech cannot
predict the outcome of any such audit.

     The types of  services  and  products  delivered  by RoTech,  the  required
quality of such  services and products and the manner in which such services and
products are  delivered and billed are each subject to  significant  and complex
regulations promulgated, interpreted and administered by the appropriate federal
or state  governmental  agency.  Although  RoTech  believes  that its  products,
services and procedures comply in all respects with such regulations  applicable
to   reimbursement   eligibility,   the   unavailability   of   advance   formal
administrative  rulings in most  regulated  areas  subjects  RoTech to  possible
subsequent adverse  interpretations and rulings which may affect the eligibility
of some or all of RoTech's  services  and products  for  reimbursement.  Such an
adverse  interpretation  or ruling could have a  substantial  adverse  impact on
RoTech's business.

     In addition,  RoTech is required to obtain  federal and state  licenses and
permits relating to the  distribution of  pharmaceutical  products,  including a
federal  Controlled  Dangerous  Substance  Registration  Certificate and Florida
State Wholesaler License. RoTech is required to obtain similar licenses from
each state in which it does business.

     RoTech's acquisitions of primary care physician practices are structured to
attempt  to  comply  with  federal  and  state  law   restrictions  on  business
relationships  between  RoTech and  persons  who may be in a  position  to refer
patients to RoTech for the  provision of  healthcare  related items or services.
Accordingly,  RoTech endeavors to undertake such  acquisitions in a manner where
the  consideration  offered and paid is  consistent  with fair  market  value in
arms-length  transactions  and is not  determined  in a manner  that  takes into
account the volume or value of any referrals or business that might otherwise be
generated  between RoTech and the physician whose practice is to be acquired and
for which payment may be made under Medicare or Medicaid.  While RoTech believes
that its acquisitions do not entail any form of unlawful remuneration, there can
be no assurance that  enforcement  authorities  will not attempt to construe the
consideration  exchanged  in  certain  acquisition   transactions  as  entailing
unlawful remuneration and to challenge such transactions on such basis.

     In many states,  the "corporate  practice of medicine  doctrine"  prohibits
business corporations from providing, or holding themselves out as providers of,
medical care through the  employment of  physicians.  Although the two states in
which RoTech has acquired  practices  of primary  care  physicians,  Florida and
Mississippi,  have not adopted this prohibition,  there can be no assurance that
either  state will not adopt this  doctrine in the future.  Enforcement  of such
doctrine could require  divestiture of acquired  practices or  restructuring  of
physician relationships.

     Healthcare is an area of extensive and dynamic regulatory  change.  Changes
in the law or new interpretations of existing laws can have a dramatic effect on
permissible  activities,  the relative costs associated with doing business, and
the amount of  reimbursement by government and third-party  payors.  The Omnibus
Budget  Reconciliation  Act of 1987  ("OBRA  1987")  created six  categories  of
durable medical equipment for purposes of reimbursement  under the Medicare Part
B program.  There is a separate fee schedule for each  category.  OBRA 1987 also
controls whether durable medical equipment products will be paid for on a rental
or sale basis and established  fixed payment rates for oxygen service as well as
a 15-month  rental ceiling on certain medical  equipment.  An interim final rule
implementing  the  payment  methodology  under the fee  schedules  recently  was
published  in the  Federal  Register.  Payment  based  on the fee  schedules  is
effective with covered items  furnished on or after January 1, 1989.  Generally,
Medicare pays 80% of the lower of the  supplier's  actual charge for the item or
the fee schedule amount,  after adjustment for the annual deductible amount. The
Omnibus  Budget  Reconciliation  Act of 1990 made  changes  to  Medicare  Part B
reimbursement  that were  implemented  in 1991. The  substantive  change was the
standardization  of Medicare rates for certain  equipment  categories.  Laws and
regulations often are adopted to regulate new products, services and industries.
The Balanced  Budget Act of 1997,  enacted in August 1997,  reduces the Medicare
national payment limits for oxygen and oxygen equipment used in home respiratory
therapy  by 25% in 1998 and 30% (from 1997  levels) in 1999 and each  subsequent
year.  Approximately  22% of RoTech's total revenues for the year ended July 31,
1997 were derived from the  provision of oxygen  services to Medicare  patients.
There can be no assurance that either the states or the federal  government will
not impose additional regulations upon RoTech's activities which might adversely
affect RoTech's business.

     Political, economic and regulatory influences are subjecting the healthcare
industry in the United  States to  fundamental  change.  Although  Congress  has
failed to pass comprehensive healthcare reform


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legislation thus far, RoTech  anticipates  that Congress and state  legislatures
will continue to review and assess alternative  healthcare  delivery and payment
systems  and  may  in  the  future  propose  and  adopt  legislation   effecting
fundamental  changes in the healthcare  delivery system.  Further,  each area of
medical  care  is  subject  to  scrutiny  and  revision  as  to  the  amount  of
reimbursement which is reasonable. Any reduction in reimbursement in those goods
and services  provided by RoTech would have a direct effect on gross revenues of
RoTech.  Legislative  debate is expected  to continue in the future,  and RoTech
cannot  predict  what impact the  adoption  of any  federal or state  healthcare
reform  measures or future  private  sector  reform may have on its  industry or
business.

     Pursuant to federal  legislation  (commonly known as "Stark II") enacted as
part of the Omnibus Budget  Reconciliation Act of 1993, and effective January 1,
1995,  physicians are prohibited from making referrals to entities in which they
(or  immediate  family  members)  have an  investment  interest or  compensation
arrangement,  where such referral is for any "designated health service" covered
by Medicare/ Medicaid, including parenteral and enteral nutrients, equipment and
supplies,  and home health  services.  Ownership  by a physician  of  investment
securities in a publicly-held  corporation with  stockholders'  equity exceeding
$75  million  at the end of the  corporation's  most  recent  fiscal  year or on
average  during the previous  three  fiscal years is exempt from the  investment
prohibition if the securities are traded on the New York, American or a regional
stock exchange, or the Nasdaq National Market.  Exemptions from the compensation
arrangement  prohibition  include (i) amounts paid by an employer to a physician
pursuant to a bona fide employment  relationship meeting specified requirements,
including  payments being  unrelated to referrals and  consistent  with the fair
market  value  of  the  services   provided  and  (ii)  other  personal  service
arrangements if certain  requirements  are met,  including that  compensation be
paid over the term of a written  agreement  with a term of one year or more,  be
set in advance,  not exceed fair market  value,  and be unrelated to  referrals.
While RoTech intends to structure its acquisitions and operations to comply with
Stark II, there can be no assurance that future interpretations of that law will
not require  structural and  organizational  modifications of RoTech's  existing
relationships with physicians, nor can assurance be given that present or future
relationships  between RoTech and  physicians  will be found to be in compliance
with such law.


COMPETITION

     The home  healthcare  market is highly  competitive  and is divided among a
large  number of  providers,  some of which are national  providers  but most of
which are either regional or local  providers.  RoTech believes that the primary
competitive  factors  in this  market  are the  ability  of a company to provide
prompt and reliable  service,  the expertise and availability of personnel,  the
range of products and services  offered and, to a limited  extent,  the price of
the  product or service.  RoTech's  current and  potential  competitors  include
several national providers which have significantly  greater financial and other
resources than RoTech.  There can be no assurance that RoTech will not encounter
increased  competition  which could  adversely  affect its business,  results of
operations or financial condition. See "Risk Factors - Competition."

     RoTech also competes with other home healthcare  companies for acquisitions
and managed care  contracts  (deriving  approximately  5% of its  revenues  from
managed care contracts).  There can be no assurance that additional acquisitions
can be made and managed care contracts can be obtained on favorable  terms or at
all.


INSURANCE

     In recent years,  participants in the healthcare market have become subject
to an increasing number of malpractice and product liability  lawsuits,  many of
which involve large claims and  significant  defense  costs.  As a result of the
liability  risks inherent in RoTech's  lines of business,  including the risk of
liability due to the negligence of physicians or other healthcare  professionals
employed by or otherwise under contract to RoTech,  RoTech  maintains  liability
insurance  intended to cover such  claims.  There can be no  assurance  that the
coverage limits of RoTech's insurance policies will be adequate,  or that RoTech
can obtain liability insurance in the future on acceptable terms or at all.


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<PAGE>

     RoTech currently has in force various liability  insurance  policies,  with
total  coverage  limits  of $26  million  per  occurrence  and in the  aggregate
annually.  These policies contain various levels of deductibles and self-insured
retentions. They provide RoTech protection against claims alleging bodily injury
or  property  damage  arising  out  of  RoTech's   operations,   including  home
healthcare,  but excluding  RoTech's employed  physicians.  RoTech has in force,
with respect to physicians  employed by it,  individual  professional  liability
insurance policies, with coverage limits ranging from $250,000 per occurrence to
$1 million per occurrence,  and ranging from $750,000 in the aggregate  annually
to $3 million in the aggregate annually. RoTech's insurance policies are subject
to annual renewal.


LEGAL PROCEEDINGS

     RoTech is from time to time involved in various legal proceedings. Although
RoTech does not believe that any currently  pending  proceeding  will materially
and  adversely  affect  RoTech,  there can be no  assurance  that any current or
future proceeding will not have a material adverse affect on RoTech's  financial
position or results of operations.


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                       DESCRIPTION OF IHS CAPITAL STOCK

     The following summary does not purport to be complete and is subject in all
respects  to  the  applicable  provisions  of  the  DGCL,  IHS'  Third  Restated
Certificate of Incorporation, as amended (the "IHS Certificate"),  and the terms
of IHS' Stockholders' Rights Plan.

     THE FOLLOWING DESCRIPTION OF THE IHS CAPITAL STOCK SHOULD BE READ CAREFULLY
BY ROTECH STOCKHOLDERS SINCE, AT THE EFFECTIVE TIME, EACH ISSUED AND OUTSTANDING
SHARE OF ROTECH  COMMON  STOCK  WILL BE  CONVERTED  INTO  .5806  FULLY  PAID AND
NONASSESSABLE  SHARES OF IHS COMMON STOCK. SEE "THE MERGER  AGREEMENT-CONVERSION
OF ROTECH SHARES."


AUTHORIZED CAPITAL STOCK


     IHS is  authorized to issue up to  150,000,000  shares of IHS Common Stock,
par  value  $.001  per  share,  26,723,872  shares  of  which  were  issued  and
outstanding at September 16, 1997, and 15,000,000 shares of IHS Preferred Stock,
none of which is outstanding as of the date hereof.


IHS COMMON STOCK

     Holders of IHS Common Stock are entitled to one vote for each share held of
record on all matters to be submitted to a vote of the  stockholders  and do not
have  preemptive  rights.  Subject to preferences  that may be applicable to any
outstanding  shares of IHS  Preferred  Stock,  holders of IHS  Common  Stock are
entitled to receive ratably such dividends, if any, as may be declared from time
to time by the IHS Board out of funds legally available  therefor.  See "Summary
of Joint Proxy  Statement/Prospectus - Market and Market Prices; Dividends." All
outstanding  shares of IHS Common  Stock are, and the shares to be issued in the
Merger  will be, when issued  pursuant to the Merger  Agreement,  fully paid and
nonassessable. In the event of any liquidation, dissolution or winding-up of the
affairs of IHS, holders of IHS Common Stock will be entitled to share ratably in
the assets of IHS  remaining  after  payment or provision  for payment of all of
IHS'  debts  and  obligations  and  liquidation   payments  to  holders  of  any
outstanding shares of IHS Preferred Stock.


IHS PREFERRED STOCK

     The IHS Board, without further stockholder authorization,  is authorized to
issue shares of IHS  Preferred  Stock in one or more series and to determine and
fix the rights,  preferences and privileges of each series,  including  dividend
rights and  preferences  over  dividends on the IHS Common Stock and one or more
other  series of IHS  Preferred  Stock,  conversion  rights,  voting  rights (in
addition  to those  provided  by law),  redemption  rights  and the terms of any
sinking fund therefor,  and rights upon liquidation,  dissolution or winding up,
including  preferences  over the IHS Common  Stock and one or more series of IHS
Preferred  Stock.  Although IHS has no present  plans to issue any shares of IHS
Preferred  Stock, the issuance of shares of IHS Preferred Stock, or the issuance
of rights to purchase such shares, may have the effect of delaying, deferring or
preventing a change in control of IHS or an unsolicited acquisition proposal.

     IHS has  designated  750,000  shares of Preferred  Stock as Series A Junior
Participating  Cumulative Preferred Stock, $.01 par value per share (the "Series
A Preferred  Stock").  The rights,  preferences  and  privileges of the Series A
Preferred Stock are set forth under "- IHS Stockholders' Rights Plan."


OPTIONS, WARRANTS AND CONVERTIBLE DEBENTURES

     At July 31, 1997, options covering an aggregate of approximately 10,320,000
shares of IHS Common Stock and warrants  covering an aggregate of 528,000 shares
of IHS Common Stock were  outstanding.  In addition,  at July 31, 1997,  IHS had
reserved  for issuance  approximately  354,000  additional  shares of IHS Common
Stock for issuance  under its stock option plans  pursuant to options which have
not yet been granted and under its stock  purchase  plan.  IHS also has reserved
for issuance  7,989,275  shares of IHS Common Stock for issuance upon conversion
of its 5  3/4%  Convertible  Senior  Subordinated  Debentures  due  2001  and 6%
Convertible  Subordinated  Debentures due 2003. See  "Description of Certain IHS
Indebtedness - 5 3/4% Convertible Senior  Subordinated  Debentures due 2001" and
"- 6% Convertible Subordinated Debentures due 2003."


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CERTAIN PROVISIONS OF IHS' BY-LAWS AND THE DGCL

     Advance  Notice  Provisions  for  Stockholder   Proposals  and  Stockholder
Nominations of Directors.  The IHS By-laws establish an advance notice procedure
with  regard to the  nomination,  other than by or at the  direction  of the IHS
Board or a committee  thereof,  of  candidates  for election as  directors  (the
"Nomination  Procedure")  and with  regard to other  matters  to be  brought  by
stockholders  before an annual  meeting of  stockholders  of IHS (the  "Business
Procedure").  See "Comparison of Rights of IHS and RoTech Stockholders - Advance
Notice  Provisions  for  Stockholder  Proposals and  Stockholder  Nominations of
Directors."

     The  Nomination  Procedure  requires that a stockholder  give prior written
notice,  in  proper  form,  of a  planned  nomination  for the IHS  Board to the
Secretary of IHS. The  requirements as to the form and timing of that notice are
specified in the IHS By-laws. If the Chairman of the IHS Board determines that a
person was not  nominated in  accordance  with the  Nomination  Procedure,  such
person will not be eligible for election as a director.

     Under the Business  Procedure,  a stockholder  seeking to have any business
conducted at an annual meeting must give prior written  notice,  in proper form,
to the  Secretary  of IHS.  The  requirements  as to the form and timing of that
notice  are  specified  in the IHS  By-laws.  If the  Chairman  of the IHS Board
determines that the other business was not properly  brought before such meeting
in accordance with the Business  Procedure,  such business will not be conducted
at such meeting.

     Although  the IHS By-laws do not give the IHS Board any power to approve or
disapprove stockholder nominations for the election of directors or of any other
business  desired  by  stockholders  to be  conducted  at an annual or any other
meeting,  the IHS By-laws (i) may have the effect of precluding a nomination for
the election of directors or precluding  the conduct of business at a particular
annual meeting if the proper  procedures are not followed or (ii) may discourage
or deter a third party from  conducting a  solicitation  of proxies to elect its
own slate of directors or otherwise attempting to obtain control of IHS, even if
the conduct of such  solicitation or such attempt might be beneficial to IHS and
its stockholders.

     Delaware Takeover Statute. IHS is subject to Section 203 of the DGCL which,
subject to certain exceptions, prohibits a Delaware corporation from engaging in
any of a broad range of business combinations with any "interested  stockholder"
for a period of three years following the date that such  stockholder  became an
interested stockholder, unless (i) prior to such date, the board of directors of
the  corporation  approved  either the business  combination or the  transaction
which resulted in the stockholder becoming an interested stockholder;  (ii) upon
consummation  of the transaction  which resulted in the stockholder  becoming an
interested  stockholder,  the interested  stockholder  owned at least 85% of the
voting  stock  of the  corporation  outstanding  at  the  time  the  transaction
commenced,   excluding  for  purposes  of  determining   the  number  of  shares
outstanding  those  shares  owned  (a) by  persons  who are  directors  and also
officers and (b) by employee stock plans in which employee  participants  do not
have the right to determine  confidentially  whether  shares held subject to the
plan will be tendered in a tender or exchange  offer;  or (iii) on or after such
date,  the  business  combination  is  approved  by the board of  directors  and
authorized at an annual or special meeting of  stockholders,  and not by written
consent,  by the affirmative vote of at least 66 2/3% of the outstanding  voting
stock  which  is  not  owned  by  the  interested  stockholder.  An  "interested
stockholder"  is defined  as any person  that is (a) the owner of 15% or more of
the outstanding voting stock of the corporation or (b) an affiliate or associate
of the corporation  and was the owner of 15% or more of the  outstanding  voting
stock of the  corporation at any time within the three-year  period  immediately
prior to the date on which it is sought to be determined  whether such person is
an interested stockholder.



IHS STOCKHOLDERS' RIGHTS PLAN

     The following is a description  of the IHS  Stockholders'  Rights Plan (the
"IHS Rights Plan"). The description  thereof set forth below is qualified in its
entirety by  reference  to the IHS Rights  Plan,  a copy of which has been filed
with the Commission.  See "Available  Information" and "Incorporation of Certain
Documents by Reference."


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<PAGE>

     The IHS Rights Plan  provides that one preferred  stock  purchase  right (a
"Right") will be issued with each share of IHS Common Stock (whether  originally
issued or from IHS' treasury) prior to the Rights  Distribution Date (as defined
herein). When exercisable, each Right entitles the registered holder to purchase
from IHS one  one-hundredth of a share of Series A Preferred Stock at a price of
$135.00  per one  one-hundredth  of a share of  Series A  Preferred  Stock  (the
"Purchase Price"), subject to adjustment.


     Until the earlier to occur of (i) 10 days  following a public  announcement
that a person  or group of  affiliated  or  associated  persons  (an  "Acquiring
Person") has acquired beneficial ownership of 20% or more of the outstanding IHS
Common Stock or (ii) 10 business  days (or such later date as may be  determined
by  action  of the IHS  Board  prior  to such  time as any  person  or  group of
affiliated  persons becomes an Acquiring  Person) following the commencement of,
or  announcement  of an intention to make, a tender offer or exchange  offer the
consummation  of which would result in the  beneficial  ownership by a person or
group of 20% or more of the  outstanding  IHS Common  Stock (the earlier of such
dates being called the "Distribution Date"), the Rights will be evidenced by all
the IHS Common Stock share  certificates  and will be  transferred  with the IHS
Common  Stock  certificates,   and  no  separate  Rights  certificates  will  be
distributed.  As soon as practicable  following the Distribution Date,  separate
certificates  evidencing  the Rights  ("Right  Certificates")  will be mailed to
holders of record of the IHS  Common  Stock as of the close of  business  on the
Distribution Date and such separate Right  Certificates  alone will evidence the
Rights.


     The Rights are not exercisable until the Distribution Date. The Rights will
expire on September  26, 2005 (the "Final  Expiration  Date"),  unless the Final
Expiration  Date is  extended  or unless  the  Rights are  earlier  redeemed  or
exchanged by IHS, in each case, as described below.


     The Purchase Price payable,  and the number of shares of Series A Preferred
Stock or other securities or property  issuable,  upon exercise of the Right are
subject to adjustment from time to time to prevent  dilution (i) in the event of
a stock dividend on, or a subdivision,  combination or reclassification  of, the
Series A  Preferred  Stock,  (ii)  upon the  grant to  holders  of the  Series A
Preferred  Stock of certain  rights or  warrants  to  subscribe  for or purchase
shares  of  Series A  Preferred  Stock  with a  conversion  price  less than the
then-current  market  price of the  Series A  Preferred  Stock or (iii) upon the
distribution  to  holders  of the  Series  A  Preferred  Stock of  evidences  of
indebtedness or assets  (excluding  regular  periodic cash dividends paid out of
earnings or retained  earnings or dividends payable in Series A Preferred Stock)
or of subscription rights or warrants (other than those referred to above).


     The number of outstanding  Rights and the number of one one-hundredths of a
share of Series A Preferred  Stock issuable upon exercise of each Right are also
subject to adjustment in the event of a stock split of the IHS Common Stock or a
stock  dividend  on the  IHS  Common  Stock  payable  in  IHS  Common  Stock  or
subdivisions,  consolidations or combinations of the IHS Common Stock occurring,
in any such case, prior to the Distribution Date.


     Series A Preferred Stock  purchasable  upon exercise of the Rights will not
be  redeemable.  Each share of Series A  Preferred  Stock will be  entitled to a
minimum  preferential  quarterly  dividend  payment  of $1 per share but will be
entitled to an aggregate  dividend of 100 times the dividend  declared per share
of IHS Common Stock.  In the event of  liquidation,  the holders of the Series A
Preferred Stock will be entitled to a minimum  preferential  liquidation payment
of $100 per share but will be entitled to an aggregate  payment of 100 times the
payment  made per share of IHS Common  Stock.  Each share of Series A  Preferred
Stock will have 100 votes,  voting together with the shares of IHS Common Stock.
Finally, in the event of any merger, consolidation or other transaction in which
IHS Common Stock is  exchanged,  each share of Series A Preferred  Stock will be
entitled to receive 100 times the amount received per share of IHS Common Stock.
These rights are protected by customary  antidilution  provisions.  The Series A
Preferred  Stock will,  if issued,  be junior to any other  series of  Preferred
Stock which may be  authorized  and issued by IHS,  unless the terms of any such
other series provide otherwise.  Once the shares of Series A Preferred Stock are
issued,  the  IHS  Certificate  may  not be  amended  in a  manner  which  would
materially  alter or change the  powers,  preferences  or special  rights of the
Series A Preferred Stock so as to affect them adversely  without the affirmative
vote of the holders of two-thirds or more of the outstanding  shares of Series A
Preferred Stock, voting separately as a class.


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<PAGE>

     Because  of  the  nature  of  the  Series  A  Preferred  Stock's  dividend,
liquidation and voting rights, the value of the one one-hundredth  interest in a
share of Series A Preferred Stock purchasable upon exercise of each Right should
approximate the value of one share of IHS Common Stock.

     In the event that IHS is acquired in a merger or other business combination
transaction or 50% or more of its consolidated  assets or earning power are sold
after a person or group has become an Acquiring Person, proper provision will be
made so that each holder of a Right will  thereafter  have the right to receive,
upon the exercise thereof at the then current exercise price of the Right,  that
number of shares of common stock of the  acquiring  company which at the time of
such transaction will have a market value of two times the exercise price of the
Right. In the event that any person or group of affiliated or associated persons
becomes an Acquiring Person,  proper provision shall be made so that each holder
of a Right, other than Rights  beneficially owned by the Acquiring Person (which
will  thereafter  be  void),  will  thereafter  have the right to  receive  upon
exercise  such  number of one  one-hundredths  of a share of Series A  Preferred
Stock as shall equal the result  obtained by (x)  multiplying  the then  current
Purchase  Price by the  number  of one  one-hundredths  of a share  of  Series A
Preferred Stock for which a Right is then  exercisable and dividing that product
by (y) 50% of the then current per share market price of the IHS Common Stock.


     At any time after any person or group becomes an Acquiring Person and prior
to the acquisition by such person or group of 50% or more of the outstanding IHS
Common Stock,  the IHS Board may exchange the Rights (other than Rights owned by
such  person or group  which will have become  void),  in whole or in part,  for
consideration  consisting  of  one-half  the  securities  of IHS  that  would be
issuable at such time upon exercise of one Right.


     With  certain  exceptions,  no  adjustment  in the  Purchase  Price will be
required until  cumulative  adjustments  require an adjustment of at least 1% in
such Purchase  Price.  No fractional  shares of Series A Preferred Stock will be
issued (other than fractions which are integral  multiples of one  one-hundredth
of a share of Series A Preferred  Stock,  which may, at the  election of IHS, be
evidenced by depositary  receipts)  and in lieu  thereof,  an adjustment in cash
will be made based on the market  price of the Series A  Preferred  Stock on the
last trading day prior to the date of exercise.


     At any time prior to the tenth day following the acquisition by a person or
group of affiliated or associated persons of beneficial ownership of 20% or more
of the  outstanding  IHS  Common  Stock,  the IHS Board may redeem the Rights in
whole, but not in part, at a price of $.01 per Right (the  "Redemption  Price");
provided,  however,  that,  for the  120-day  period  after any date of a change
(resulting from a proxy or consent  solicitation) in a majority of the IHS Board
in office at the  commencement  of such  solicitation,  the  Rights  may only be
redeemed  if (A) there are  directors  then in office  who were in office at the
commencement of such solicitation and (B) the IHS Board, with the concurrence of
a majority of such directors then in office, determines that such redemption is,
in  their  judgment,  in the best  interests  of IHS and its  stockholders.  The
redemption  of the Rights may be made  effective at such time on such basis with
such  conditions  as  the  IHS  Board  in its  sole  discretion  may  establish.
Immediately upon any redemption of the Rights,  the right to exercise the Rights
will  terminate  and the only right of the  holders of Rights will be to receive
the Redemption Price.


     The terms of the Rights may be amended by the IHS Board without the consent
of the holders of the Rights,  except that from and after a Distribution Date no
such amendment may adversely affect the interests of the holders of the Rights.


     Until a Right is  exercised,  the  holder  thereof,  as such,  will have no
rights as a stockholder of IHS, including, without limitation, the right to vote
or to receive dividends.


     The Rights  have  certain  anti-takeover  effects.  The  Rights  will cause
substantial  dilution to a person or group that  attempts to acquire IHS without
conditioning  the offer on the Rights being redeemed or a substantial  number of
Rights  being  acquired.  The effect of the Rights may be to inhibit a change in
control of IHS  (including  through a third party  tender offer at a price which
reflects a premium to the then prevailing  trading price) that may be beneficial
to IHS  stockholders.  See  "Risk  Factors  - Effect  of  Certain  Anti-Takeover
Provisions."


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LIMITATIONS ON LIABILITY OF OFFICERS AND DIRECTORS

     IHS'  Certificate  contains a provision  eliminating  or limiting  director
liability to IHS and its  stockholders for monetary damages arising from acts or
omissions in the  director's  capacity as a director.  The  provision  does not,
however,  eliminate  or limit the  personal  liability of a director (i) for any
breach of such director's duty of loyalty to IHS or its  stockholders,  (ii) for
acts or omissions not in good faith or which involve intentional misconduct or a
knowing  violation  of law,  (iii)  under  the DGCL for  unlawful  dividends  or
unlawful stock purchases or redemptions,  or (iv) for any transaction from which
the director derived an improper personal benefit. This provision offers persons
who  serve on the IHS  Board  protection  against  awards  of  monetary  damages
resulting from breaches of their duty of care (except as indicated  above). As a
result  of this  provision,  the  ability  of IHS or a  stockholder  thereof  to
successfully  prosecute an action against a director for a breach of his duty of
care is limited.  However,  the provision  does not affect the  availability  of
equitable  remedies such as an injunction or rescission  based upon a director's
breach of his duty of care.  The  Commission  has taken  the  position  that the
provision  will have no effect on claims  arising  under the federal  securities
laws.

     In addition,  the IHS Certificate and the IHS By-laws provide for mandatory
indemnification rights, subject to limited exceptions, to any director, officer,
employee,  or agent  of IHS  who,  by  reason  of the  fact  that he or she is a
director,  officer, employee, or agent of IHS, is involved in a legal proceeding
of any nature. Such  indemnification  rights include  reimbursement for expenses
incurred by such director,  officer,  employee, or agent in advance of the final
disposition of such proceeding in accordance  with the applicable  provisions of
the DGCL. In addition, IHS has entered into indemnification  agreements with its
officers and directors.


TRANSFER AGENT AND REGISTRAR

     The Transfer Agent and Registrar for the IHS Common Stock is American Stock
Transfer & Trust Company, New York, New York.



              COMPARISON OF RIGHTS OF IHS AND ROTECH STOCKHOLDERS

     IHS is  incorporated  under  the laws of the State of  Delaware.  RoTech is
incorporated  under the laws of the State of  Florida.  The holders of shares of
RoTech  Common Stock,  whose rights as  stockholders  are currently  governed by
Florida law, the Articles of Incorporation,  as amended,  of RoTech (the "RoTech
Articles"),  and the RoTech  By-laws,  will,  upon the  exchange of their shares
pursuant to the Merger,  become holders of shares of IHS Common Stock, and their
rights as such will be governed by Delaware law, the IHS Certificate and the IHS
By-laws.  The  material  differences  between the rights of holders of shares of
RoTech  Common  Stock and the rights of  holders of shares of IHS Common  Stock,
which  result  from  differences  in their  governing  corporate  documents  and
differences in Delaware and Florida corporate law, are summarized below.

     The  following  summary does not purport to be a complete  statement of the
rights of holders of shares of IHS Common Stock under  applicable  Delaware law,
the IHS  Certificate  and IHS  By-laws or a  comprehensive  comparison  with the
rights of the holders of shares of RoTech Common Stock under applicable  Florida
law, the RoTech  Articles and RoTech By-laws,  or a complete  description of the
specific   provisions   referred  to  herein.  The  identification  of  specific
differences  is not meant to  indicate  that other  equally or more  significant
differences do not exist. This summary is qualified in its entirety by reference
to the DGCL, the FBCA and the governing  corporate  documents of IHS and RoTech,
to which  holders of shares of IHS  Common  Stock and  RoTech  Common  Stock are
referred. See "Incorporation of Certain Information by Reference."


CLASSES AND SERIES OF CAPITAL STOCK


     RoTech.  RoTech  is  authorized  by the  RoTech  Articles  to  issue  up to
50,000,000  shares of RoTech Common Stock, par value $.0002 per share. As of the
RoTech  Record Date,  26,439,322  shares of RoTech  Common Stock were issued and
outstanding. In addition, as of the RoTech Record Date there were 


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outstanding  options  under RoTech stock option plans to purchase an  additional
3,172,000  shares of RoTech Common Stock and  4,190,477  shares of RoTech Common
Stock reserved for issuance upon conversion of the RoTech Debentures.

     IHS. IHS is authorized by the IHS  Certificate  to issue up to  165,000,000
shares of capital stock, of which  150,000,000  shares are designated IHS Common
Stock and 15,000,000  shares are designated as preferred  stock,  par value $.01
per share ("IHS  Preferred  Stock").  Seven hundred fifty thousand shares of IHS
Preferred Stock have been designated as Series A Junior Participating Cumulative
Preferred  Stock.  See  "Description  of IHS Capital  Stock - IHS  Stockholders'
Rights  Plan." As of the IHS Record Date,  there were  25,657,612  shares of IHS
Common Stock outstanding.  In addition,  at July 31, 1997 there were outstanding
options   under  IHS  Common  Stock  option  plans  to  purchase  an  additional
approximately  10,320,000 shares of IHS Common Stock and outstanding warrants to
purchase  528,000   additional   shares  of  IHS  Common  Stock.  An  additional
approximately  354,000  shares of IHS Common Stock have been reserved for future
option  grants under IHS stock  option and stock  purchase  plans and  7,989,275
shares of IHS Common Stock have been  reserved for issuance  upon  conversion of
IHS'  outstanding  convertible  debentures.  The IHS Board has the  authority to
issue  the IHS  Preferred  Stock in one or more  series  and to fix the  rights,
preferences,  privileges  and  restrictions  for each such  series,  without any
further vote or action by the  stockholders.  As of the IHS Record  Date,  there
were no shares of IHS Preferred Stock issued and outstanding,  and the IHS Board
has no present  intention of issuing  shares of IHS Preferred  Stock,  except as
provided in the IHS Rights Plan.

     As a consequence of and following the Merger,  RoTech  stockholders will no
longer hold RoTech  Common  Stock,  but will  instead  hold shares of IHS Common
Stock with associated rights to acquire Series A Preferred Stock.

SIZE AND ELECTION OF THE BOARD OF DIRECTORS

     RoTech. The RoTech By-laws provide that the number of directors which shall
constitute  the RoTech  Board  shall be not less than three nor more than seven.
The RoTech Board currently  consists of five directors.  Directors of RoTech are
elected by a plurality vote of the shares of RoTech Common Stock  represented in
person or by proxy at the annual meeting of stockholders and entitled to vote on
the election of  directors.  The  directors  are elected each year at the annual
meeting of stockholders  and hold office until the next annual meeting and until
their successors shall be duly elected and qualified.

     IHS.  The IHS  By-laws  provide  that the IHS Board  shall  consist of nine
directors,  except that whenever all of the shares of IHS are owned beneficially
and of record by either one or two stockholders,  the number of directors may be
less than five but not less than the number of  stockholders.  Directors  of IHS
are elected by a plurality of votes cast at the annual meeting of  stockholders.
At each annual meeting of IHS stockholders, directors are elected to serve for a
term of one year and until  their  successors  shall have been duly  elected and
qualified or until their earlier resignation or removal.

     As a consequence of and following the Merger, the rights and obligations of
holders of RoTech Shares exchanged for IHS Common Stock with respect to the size
and  election of the IHS Board will be governed by the IHS By-laws as  described
in the immediately preceding paragraph.

AMENDMENT OR REPEAL OF THE CERTIFICATE OF INCORPORATION AND BY-LAWS

     Under  the DGCL  and the  FBCA,  unless  its  certificate  or  articles  of
incorporation  or  by-laws  otherwise  provide,  amendment  of  a  corporation's
certificate or articles of incorporation  generally requires the approval of the
holders of a majority of the outstanding stock entitled to vote thereon,  and if
such amendment would increase or decrease the number of authorized shares of any
class or series or the par value of such  shares or would  adversely  affect the
shares of such  class or  series,  requires  the  approval  of the  holders of a
majority of the outstanding stock of such class or series.

     RoTech.  The  RoTech  Articles  provide  that  amendments  thereto  must be
approved  by the  RoTech  Board,  proposed  by the  RoTech  Board to the  RoTech
stockholders, and approved at a RoTech stockholders' meeting by the holders of a
majority of the shares of RoTech  Common  Stock issued and entitled to be voted,
unless  all  RoTech  directors  and  stockholders   sign  a  written   statement
manifesting their intention that an amendment to the RoTech Articles be made.


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     The RoTech Articles and RoTech By-laws provide that  stockholders of RoTech
by the  vote of a  majority  of the  stock  entitled  to vote  at a  meeting  of
stockholders may adopt,  alter, amend or repeal, in whole or in part, any RoTech
By-laws  if notice of the  proposed  action  was  included  in the notice of the
meeting  or is waived in  writing  by the  holders  of a  majority  of the stock
entitled to vote thereon.  The RoTech  Articles and RoTech  By-laws also provide
that the RoTech Board shall have the authority to adopt,  alter, amend or repeal
the RoTech  By-laws by the vote of a majority of the members of the RoTech Board
at any meeting  thereof;  provided,  however,  that any  by-laws  adopted by the
RoTech  Board  which are  inconsistent  with any  by-laws  adopted by the RoTech
stockholders  shall be void, and the RoTech Board may not alter, amend or repeal
any by-laws adopted by the RoTech stockholders.

     IHS. The IHS  Certificate  provides that the IHS  Certificate  shall not be
amended  in any  manner  which  would  materially  alter or change  the  powers,
preferences  or special  rights of the Series A Preferred  Stock so as to affect
them  adversely  without  the  affirmative  vote  of  the  holders  of at  least
two-thirds of the  outstanding  shares of the Series A Preferred  Stock,  voting
together as a single class.  Subject to the foregoing,  the IHS  Certificate and
the IHS By-laws provide that the IHS By-laws may be altered, amended or repealed
by a majority vote of the stockholders entitled to vote thereon at any annual or
special  meeting duly convened after notice to the  stockholders of that purpose
or by a majority  vote of the members of the IHS Board at any regular or special
meeting of the IHS Board  duly  convened  after  notice to the IHS Board of that
purpose,  subject always to the power of the  stockholders to change such action
of the IHS Board.

     As a consequence of and following the Merger, the rights and obligations of
holders of RoTech  Shares  exchanged  for IHS Common  Stock with  respect to the
amendment or repeal of the IHS  Certificate  and IHS By-laws will be governed as
described in the immediately preceding paragraph.


SPECIAL MEETINGS OF STOCKHOLDERS

     RoTech.   The  RoTech  By-laws   provide  that  special   meetings  of  the
stockholders shall be held when directed by the President or the RoTech Board or
when  requested  in writing  by  stockholders  who hold a majority  of the stock
having the right and entitled to vote at such meetings.

     IHS. The IHS By-laws provide that a special meeting of the IHS stockholders
may be called by the chairman of the IHS Board,  the deputy  chairman of the IHS
Board (if any) or the President or by order of the IHS Board.

     As a consequence of and following the Merger, the rights and obligations of
holders of RoTech  Shares  exchanged  for IHS Common  Stock with  respect to the
calling of special meetings of stockholders will be governed as described in the
immediately preceding paragraph.


ADVANCE  NOTICE PROVISIONS FOR STOCKHOLDER PROPOSALS AND STOCKHOLDER NOMINATIONS
OF DIRECTORS

     RoTech.   The  RoTech  Articles  and  RoTech  By-laws  provide  no  special
procedures  regarding the nomination of persons for election to the RoTech Board
by  stockholders  or the proposal of business at an annual or special meeting of
stockholders.

     IHS. The IHS By-laws  provide that  nominations  of persons for election to
the IHS Board may be made by any  stockholder  of IHS  entitled  to vote for the
election of directors at the applicable  meeting of stockholders only if written
notice  to the  Secretary  of IHS of such  stockholder's  intent  to  make  such
nomination  or  nominations  is given,  either by  personal  delivery or by U.S.
certified  mail,  postage  prepaid,  and received (i) not less than 120 days nor
more  than 150 days  before  the  first  anniversary  of the date of IHS'  proxy
statement in connection with the last annual meeting of stockholders, or (ii) if
the  applicable  annual  meeting has been  changed by more than 30 days from the
date  contemplated at the time of the previous year's proxy statement,  not less
than 60 days before the date of the  applicable  annual  meeting,  or (iii) with
respect to any  special  meeting of  stockholders  called  for the  election  of
directors, not later than the close of business on the seventh day following the
date on which notice of such meeting is first given to  stockholders.  Each such
notice shall set forth (a) as to the stockholder giving the notice, (i) the name
and  address,  as they  appear  on the  stock  transfer  books  of IHS,  of such
stockholder,  (ii) a  representation  that such  stockholder is a stockholder of
record and intends to appear


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in  person  or by proxy at such  meeting  to  nominate  the  person  or  persons
specified  in the  notice,  (iii) the class and number of shares of stock of IHS
beneficially  owned  by  such  stockholder,   and  (iv)  a  description  of  all
arrangements or understandings between such stockholder and each nominee and any
other  person or persons  naming  such  person or persons  pursuant to which the
nomination or nominations are to be made by such stockholder; and (b) as to each
person whom the stockholder proposes to nominate for election as a director, (i)
the name, age, business address and, if known, residence address of such person,
(ii) the principal  occupation or employment of such person, (iii) the class and
number of shares of stock of IHS which are  beneficially  owned by such  person,
(iv) any other  information  relating  to such  person  that is  required  to be
disclosed  in  solicitations  of proxies  for the  election of  directors  or is
otherwise  required by the rules and  regulations of the Commission  promulgated
under the Exchange  Act, and (v) the written  consent of such person to be named
in the proxy statement as a nominee and to serve as a director if elected.

     The IHS By-laws provide that at an annual meeting of the stockholders, only
such business shall be conducted as shall have been properly  brought before the
meeting.  For  business to be  properly  brought  before an annual  meeting by a
stockholder,  written  notice  thereof  to the  Secretary  of IHS must be given,
either by personal  delivery or by U.S.  certified mail,  postage  prepaid,  and
received at the  principal  executive  offices of IHS (i) not less than 120 days
nor more than 150 days  before the first  anniversary  of the date of IHS' proxy
statement in connection  with the last annual meeting of stockholders or (ii) if
no annual  meeting was held in the previous  year or the date of the  applicable
annual meeting has been changed by more than 30 days from the date  contemplated
at the time of the previous year's proxy statement, not less than 60 days before
the date of the applicable  annual meeting.  Each such notice shall set forth as
to each matter: (a) the description of the business desired to be brought before
the  annual  meeting,  including  the  complete  text of any  resolutions  to be
presented at the annual meeting, (b) the name and address, as they appear on the
stock transfer books of IHS, of such stockholder proposing such business,  (c) a
representation  that such  stockholder is a stockholder of record and intends to
appear in person or by proxy at such  meeting to bring the  business  before the
meeting specified in the notice,  (d) the class and number of shares of stock of
IHS beneficially  owned by the stockholder and (e) any material  interest of the
stockholder in such business.

     As a consequence of and following the Merger,  RoTech stockholders  wishing
to nominate  candidates to the IHS Board or bring  business  before a meeting of
stockholders  will have to comply with the notice procedures of IHS set forth in
the two preceding paragraphs.


INDEMNIFICATION OF DIRECTORS AND OFFICERS

     The  DGCL  and  the  FBCA  permit  a  corporation  to  indemnify  officers,
directors,  employees and agents for actions taken in good faith and in a manner
they reasonably  believed to be in, or not opposed to, the best interests of the
corporation,  and  with  respect  to any  criminal  action,  which  they  had no
reasonable  cause to believe was unlawful.  The DGCL and the FBCA provide that a
corporation  may advance  expenses of defense (upon receipt of an undertaking to
reimburse the corporation if indemnification is ultimately  determined not to be
appropriate) and must reimburse a successful  defendant for expenses,  including
attorneys' fees,  actually and reasonably  incurred.  The DGCL and the FBCA also
permit a  corporation  to purchase  and  maintain  liability  insurance  for its
directors and officers.  The DGCL and the FBCA provide that  indemnification may
not be made for any  claim,  issue  or  matter  as to  which a  person  has been
adjudged by a court of competent  jurisdiction,  after exhaustion of all appeals
therefrom,  to be liable to the  corporation,  unless  and only to the  extent a
court  determines  that the person is entitled to indemnity for such expenses as
the court deems proper.

     RoTech.  The RoTech By-laws provide that RoTech shall indemnify each person
who was or is a party or is  threatened  to be made a party  to any  threatened,
pending or completed claim, action, suit or proceeding, whether civil, criminal,
administrative or investigative,  by reason of the fact that he or she is or was
a  director,  officer,  employee  or agent of RoTech or is or was serving at the
request of RoTech as a director,  partner, officer, employee or agent of another
corporation  or of a  partnership,  joint  venture,  trust or  other  enterprise
against expenses (including attorneys' fees), judgments,  fines and amounts paid
in  settlement  in  connection  with such  claim,  action,  suit or  proceeding.
Expenses incurred in defending


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any such civil or criminal  action,  suit or proceeding may be paid by RoTech in
advance of final  disposition  as authorized by the RoTech Board upon receipt of
an undertaking by or on behalf of such director,  officer,  employee or agent to
repay such amounts  unless it shall  ultimately be determined  that he or she is
entitled to be indemnified by RoTech.

     IHS. The IHS By-laws  provide that IHS shall indemnify any director and any
officer of IHS holding  the  position  of Senior  Vice  President  or any higher
office  (and  may  indemnify  any  other  person)  who was or is a  party  or is
threatened to be made a party to any  threatened,  pending or completed  action,
suit or proceeding, whether civil, criminal, administrative or investigative, by
reason of the fact that he or she is or was a  director  or an officer of IHS or
is or was  serving at the  request of IHS as a  director,  officer,  employee or
agent  of  another  corporation,  partnership,  joint  venture,  trust  or other
enterprise against expenses (including  attorneys' fees),  judgments,  fines and
amounts paid in  settlement  actually and  reasonably  incurred by him or her in
connection with such action, suit or proceeding to the fullest extent and in the
manner set forth in and permitted by the DGCL and any other  applicable  law, as
from time to time in effect.  Expenses incurred by a director or officer holding
the position of Senior Vice President or any higher office in defending any such
proceeding shall be paid by IHS (and, in the case of other persons,  may be paid
by IHS) in advance of final disposition upon the representation that such person
believes he or she is entitled to indemnification  thereunder and the receipt of
an  undertaking  by such  person to repay all  amounts  advanced if it should be
ultimately determined that such person is not entitled to be indemnified.


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                    DESCRIPTION OF CERTAIN IHS INDEBTEDNESS


     The following summarizes the material long-term indebtedness of IHS and its
subsidiaries.  IHS' indebtedness is substantial in relation to its stockholders'
equity. At June 30, 1997, IHS' total long-term debt,  including current portion,
accounted  for 67.7% of its total  capitalization.  On a pro forma  basis  after
giving effect to the Merger, the Proposed Acquisitions,  the New Credit Facility
and the  issuance of the 9 1/4% Senior  Notes and the use of proceeds  therefrom
and from the term loan  portion  of the New  Credit  Facility  to repay  amounts
outstanding  under the prior  credit  facility,  to pay the cash  portion of the
purchase price of the Proposed Acquisitions and to repay certain indebtedness to
be  assumed  in the  Merger and the  Proposed  Acquisitions,  IHS'  total  debt,
including current portion, at June 30, 1997 accounted for 66.7% of its total pro
forma  capitalization.  In  connection  with the  offering  of the 9 1/4% Senior
Notes, S&P confirmed its B rating of IHS' other  subordinated  debt obligations,
but with a negative  outlook,  and assigned the same rating to the 9 1/4% Senior
Notes, and Moody's downgraded IHS' other senior subordinated debt obligations to
B2, but noted that the outlook for the rating was stable,  and  assigned the new
rating  to the 9 1/4%  Senior  Notes.  See  "Risk  Factors  - Risks  Related  to
Substantial  Indebtedness."  The summary is not a complete  description  of such
indebtedness.  Copies of the material  agreements  relating to such indebtedness
have been filed  with the  Commission  and the  description  set forth  below is
qualified  in its  entirety by  reference  to such  agreements.  See  "Available
Information."


NEW CREDIT FACILITY

     On September 15, 1997,  IHS entered into a $1.75 billion  revolving  credit
and term loan facility with Citibank, N.A., as Administrative Agent, and certain
other  lenders (the "New Credit  Facility") to replace its existing $700 million
revolving  credit facility.  The New Credit Facility  consists of a $750 million
term loan  facility  (the "Term  Facility")  and a $1 billion  revolving  credit
facility,  including  a $100  million  letter  of credit  subfacility  and a $10
million swing line  subfacility (the "Revolving  Facility").  The Term Facility,
all of which was  borrowed on September  17, 1997,  matures on December 31, 2004
and will be  amortized  beginning  December  31,  1998 as  follows:  1998 - $7.5
million;  each of 1999,  2000,  2001 and 2002 - $7.5  million  (payable in equal
quarterly  installments);  2003 - $337.5  million  (payable  in equal  quarterly
installments);   and  2004  -  $375   million   (payable   in  equal   quarterly
installments).  Any unpaid  balance will be due on the maturity  date.  The Term
Facility will bear interest at a rate equal to, at the option of IHS, either (i)
in the case of Eurodollar loans, the sum of (x) one and  three-quarters  percent
or two  percent  (depending  on the  ratio of IHS' Debt (as  defined  in the New
Credit Facility) to earnings before interest, taxes, depreciation,  amortization
and rent, pro forma for any acquisitions or divestitures  during the measurement
period  (the  "Debt/EBITDAR  Ratio"))  and (y) the  interest  rate in the London
interbank  market  for loans in an amount  substantially  equal to the amount of
borrowing and for the period of borrowing selected by IHS or (ii) the sum of (a)
the higher of (1) Citibank,  N.A.'s base rate or (2) one percent plus the latest
overnight  federal  funds  rate  plus  (b)  a  margin  of  one-half  percent  or
three-quarters of one percent  (depending on the Debt/EBITDAR  Ratio).  The Term
Facility can be prepaid at any time in whole or in part without penalty.

     The  Revolving  Facility  will reduce to $800 million on September 30, 2001
and $500 million on September 30, 2002,  with a final  maturity on September 15,
2004;  however,  the $100 million letter of credit  subfacility  and $10 million
swing  line   subfacility   will  remain  at  $100   million  and  $10  million,
respectively, until final maturity. The Revolving Facility will bear interest at
a rate  equal to, at the  option of IHS,  either  (i) in the case of  Eurodollar
loans,  the  sum of (x)  between  three-quarters  of one  percent  and  one  and
three-quarters  percent  (depending  on the  Debt/EBITDAR  Ratio)  and  (y)  the
interest  rate  in  the  London   interbank   market  for  loans  in  an  amount
substantially  equal to the amount of borrowing  and for the period of borrowing
selected by IHS or (ii) the sum of (a) the higher of (1)  Citibank,  N.A.'s base
rate or (2) one percent plus the latest overnight  federal funds rate plus (b) a
margin  of  between  zero  percent  and  one-half  percent   (depending  on  the
Debt/EBITDAR  Ratio).  Amounts  repaid  under  the  Revolving  Facility  may  be
reborrowed prior to the maturity date.

     The New  Credit  Facility  limits  IHS'  ability to incur  indebtedness  or
contingent obligations,  to make additional acquisitions,  to sell or dispose of
assets,  to create or incur liens on assets,  to pay  dividends,  to purchase or
redeem  IHS'  stock  and to  merge or  consolidate  with any  other  person.  In
addition,  the New Credit  Facility  requires  that IHS meet  certain  financial
ratios, and provides the banks with the right to 


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<PAGE>


require  the  payment of all  amounts  outstanding  under the  facility,  and to
terminate all commitments under the facility, if there is a change in control of
IHS or if any person other than Dr.  Robert N. Elkins,  IHS'  Chairman and Chief
Executive Officer,  or a group managed by Dr. Elkins, owns more than 40% of IHS'
stock. The New Credit Facility is guaranteed by all of IHS' subsidiaries  (other
than  inactive  subsidiaries)  and  secured  by a pledge  of all of the stock of
substantially all of IHS' subsidiaries.

     The New Credit  Facility  replaced IHS' $700 million  credit  facility (the
"Prior Credit  Facility").  As a result,  IHS anticipates that it will record an
extraordinary  loss on extinguishment of debt of approximately $2.4 million (net
of related tax benefit of  approximately  $1.6  million) in the third quarter of
1997  resulting from the write-off of deferred  financing  costs of $4.0 million
related to the Prior Credit Facility. 


5 3/4% CONVERTIBLE SENIOR SUBORDINATED DEBENTURES DUE 2001

     IHS  has  outstanding   $143,750,000   principal  amount  of  IHS'  5  3/4%
Convertible Senior  Subordinated  Debentures due 2001 (the "5 3/4% Debentures").
Interest on the 5 3/4% Debentures is payable semi-annually on January 1 and July
1. The 5 3/4% Debentures are redeemable in whole or in part at the option of IHS
at a price,  expressed as a percentage  of the  principal  amount,  ranging from
103.29% in 1997 to 100.82% in 2000, plus accrued interest. The 5 3/4% Debentures
are  convertible  into IHS Common Stock at any time prior to redemption or final
maturity,  initially at the conversion price of $32.60 per share (the equivalent
of 30.675 shares per $1,000 principal amount of 5 3/4%  Debentures),  subject to
adjustment  upon the occurrence of certain  events.  In the event of a change in
control of IHS (as defined in the  indenture  under which the 5 3/4%  Debentures
were  issued),  each holder of 5 3/4%  Debentures  may require IHS to repurchase
such holder's 5 3/4%  Debentures,  in whole or in part, at 100% of the principal
amount thereof, plus accrued interest to the repurchase date.


6% CONVERTIBLE SUBORDINATED DEBENTURES DUE 2003

     IHS has  outstanding  $115,000,000  aggregate  principal  amount  of its 6%
Convertible Subordinated Debentures due 2003 (the "6% Debentures").  Interest on
the 6%  Debentures  is  payable  semi-annually  on  January 1 and July 1. The 6%
Debentures  are  redeemable in whole or in part at the option of IHS at any time
at a price,  expressed as a percentage  of the  principal  amount,  ranging from
103.6% in 1997 to 100.6% in 2002,  plus accrued  interest.  Prior to redemption,
the 6%  Debentures  are  convertible  into IHS Common Stock at the option of the
holder at any time at or before maturity at $32.125 per share (the equivalent of
31.128  shares  per  $1,000  principal  amount  of 6%  Debentures),  subject  to
adjustment  upon the occurrence of certain  events.  In the event of a change in
control of IHS (as defined in the indenture  under which the 6% Debentures  were
issued),  each  holder of 6%  Debentures  may  require  IHS to  repurchase  such
holder's 6%  Debentures,  in whole or in part, at 100% of the  principal  amount
thereof, plus accrued interest to the repurchase date.



9 1/4% SENIOR SUBORDINATED NOTES DUE 2008

     IHS has outstanding  $500,000,000  aggregate principal amount of its 9 1/4%
Senior Subordinated Notes due 2008 (the "9 1/4% Senior Notes").  Interest on the
9 1/4% Senior  Notes is payable  semi-annually  on January 15 and July 15. The 9
1/4% Senior Notes are redeemable in whole or in part at the option of IHS at any
time on or after Janaury 15, 2003, at a price,  expressed as a percentage of the
principal  amount,  initially equal to 104.625% and declining to 100% on January
15,  2006,  plus accrued  interest  thereon.  In addition,  IHS may redeem up to
$166,667,000  aggregate  principal amount of 9 1/4% Senior Notes at any time and
from time to time prior to  January  15,  2001 at a  redemption  price  equal to
109.25%  of the  aggregate  principal  amount  thereof,  plus  accrued  interest
thereon, out of the net cash proceeds of one or more Public Equity Offerings (as
defined in the indenture under which the 9 1/4% Senior Notes were issued (the "9
1/4% Senior Notes  Indenture")).  In the event of a change in control of IHS (as
defined in the 9 1/4%  Senior  Notes  Indenture),  each  holder of 9 1/4% Senior
Notes may require IHS to repurchase  such holder's 9 1/4% Senior Notes, in whole
or in part, at 101% of the principal  amount thereof,  plus accrued  interest to
the  repurchase  date.  The 9  1/4%  Senior  Notes  Indenture  contains  certain
covenants,  including,  but  not  limited  to,  covenants  with  respect  to the
following  matters:  (i) limitations on additional  indebtedness  unless certain
coverage ratios are met; (ii) limitations on other 


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subordinated  indebtedness;  (iii) limitations on liens; (iv) limitations on the
issuance  of  preferred   stock  by  IHS'   subsidiaries;   (v)  limitations  on
transactions  with  affiliates;  (vi)  limitations  on  restricted  payments and
investments;  (vii)  application of the proceeds of certain asset sales;  (viii)
limitations on restrictions on subsidiary  dividends;  and (ix)  restrictions on
mergers,  consolidations  and the  transfer of all or  substantially  all of the
assets of IHS to another person. 

9 1/2% SENIOR SUBORDINATED NOTES DUE 2007

     IHS has outstanding  $450,000,000  aggregate principal amount of its 9 1/2%
Senior Subordinated Notes due 2007 (the "9 1/2% Senior Notes").  Interest on the
9 1/2% Senior Notes is payable semi-annually on March 15 and September 15. The 9
1/2% Senior Notes are redeemable in whole or in part at the option of IHS at any
time on or after  September 15, 2002,  at a price,  expressed as a percentage of
the  principal  amount,  initially  equal to 104.75%  and  declining  to 100% on
September 15, 2005, plus accrued interest thereon.  In addition,  IHS may redeem
up to $150,000,000 aggregate principal amount of 9 1/2% Senior Notes at any time
and from time to time prior to September 15, 2000 at a redemption price equal to
108.50%  of the  aggregate  principal  amount  thereof,  plus  accrued  interest
thereon, out of the net cash proceeds of one or more Public Equity Offerings (as
defined in the indenture under which the 9 1/2% Senior Notes were issued (the "9
1/2% Senior Notes  Indenture")).  In the event of a change in control of IHS (as
defined in the 91/2% Senior Notes Indenture), each holder of 9 1/2% Senior Notes
may require IHS to repurchase  such holder's 9 1/2% Senior Notes, in whole or in
part,  at 101% of the principal  amount  thereof,  plus accrued  interest to the
repurchase date. The 9 1/2% Senior Notes Indenture  contains certain  covenants,
including,  but not limited to, covenants with respect to the following matters:
(i) limitations on additional  indebtedness  unless certain  coverage ratios are
met; (ii) limitations on other subordinated  indebtedness;  (iii) limitations on
liens; (iv) limitations on the issuance of preferred stock by IHS' subsidiaries;
(v) limitations on transactions with affiliates;  (vi) limitations on restricted
payments and  investments;  (vii)  application  of the proceeds of certain asset
sales;  (viii)  limitations on  restrictions on subsidiary  dividends;  and (ix)
restrictions on mergers, consolidations and the transfer of all or substantially
all of the assets of IHS to another person.


10 1/4% SENIOR SUBORDINATED NOTES DUE 2006

     IHS HAS OUTSTANDING  $150,000,000 AGGREGATE PRINCIPAL AMOUNT OF ITS 10 1/4%
SENIOR SUBORDINATED NOTES due 2006 (the "10 1/4% Senior Notes"). Interest on the
10 1/4% Senior Notes is payable semi-annually on April 30 and October 30. The 10
1/4% Senior Notes are  redeemable  for cash at any time after April 30, 2001, at
IHS'  option,  in whole or in part,  initially  at a  redemption  price equal to
105.125% of the principal  amount,  declining to 100% of the principal amount on
April 30, 2004, plus accrued  interest thereon to the date fixed for redemption.
In the event of a change in control of IHS (as  defined in the  indenture  under
which the 10 1/4% Senior Notes were issued), each holder of 10 1/4% Senior Notes
may require IHS to repurchase such holder's 10 1/4% Senior Notes, in whole or in
part,  at 101% of the principal  amount  thereof,  plus accrued  interest to the
repurchase  date. The indenture under which the 10 1/4% Senior Notes were issued
contains  certain  covenants,  including,  but not  limited to,  covenants  with
respect to the following  matters:  (i)  limitations on additional  indebtedness
unless certain  ratios are met; (ii)  limitations  on other  subordinated  debt;
(iii)  limitations on liens; (iv) limitations on the issuance of preferred stock
by IHS'  subsidiaries;  (v) limitations on transactions  with  affiliates;  (vi)
limitations on certain payments,  including dividends;  (vii) application of the
proceeds of certain asset sales; (viii) restrictions on mergers,  consolidations
and the  transfer  of all or  substantially  all of the assets of IHS to another
person; and (ix) limitations on investments and loans.

     The 10 1/4%  Senior  Notes were sold to Smith  Barney,  DLJ,  and  Citicorp
Securities, Inc., as Initial Purchasers. The Initial Purchasers sold the 10 1/4%
Senior Notes to qualified institutional buyers under Rule 144A of the Securities
Act and to a limited number of institutional  accredited investors.  Pursuant to
an  agreement  with the Initial  Purchasers,  IHS was  obligated to take certain
actions to effect an exchange offer within specified periods whereby each holder
of 10 1/4% Senior Notes would be offered the  opportunity to exchange such notes
for new notes  identical  in all  material  respects to the 10 1/4% Senior Notes
except that the new notes would be registered  under the Securities Act. IHS has
not to date  commenced the exchange offer and, as a result,  beginning  November
25, 1996 the interest rate on the 10 1/4% Senior Notes  increased to 10.5%,  and
will  continue  to increase  by 0.25% each 90 days until the  exchange  offer is
commenced.


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10 3/4% SENIOR SUBORDINATED NOTES DUE 2004

     IHS has  outstanding  $107,000  aggregate  principal  amount of its 10 3/4%
Senior Subordinated Notes due 2004 (the "10 3/4% Senior Notes"). Interest on the
10 3/4% Senior Notes is payable  semi-annually on January 15 and July 15. The 10
3/4% Senior Notes are redeemable in whole or in part at the option of IHS at any
time on or after July 15, 1999,  at a price,  expressed  as a percentage  of the
principal amount,  initially equal to 105.375% and declining to 100% on July 15,
2002, plus accrued interest thereon.  In the event of a change in control of IHS
(as defined in the  indenture  under which the 10 3/4% Senior  Notes were issued
(the "10 3/4% Senior Notes Indenture")), each holder of 10 3/4% Senior Notes may
require IHS to repurchase  such  holder's 10 3/4% Senior  Notes,  in whole or in
part,  at 101% of the principal  amount  thereof,  plus accrued  interest to the
repurchase  date. The 10 3/4% Senior Notes  Indenture  contains  certain limited
covenants,  including a covenant with respect to the application of the proceeds
of certain asset sales.

     On May 30, 1997, IHS repurchased  $99,893,000 aggregate principal amount of
the 10 3/4% Senior Notes pursuant to a cash tender offer. As a condition of IHS'
obligation  to  repurchase  tendered 10 3/4%  Senior  Notes,  tendering  holders
consented to amendments to the 10 3/4% Senior Notes Indenture  which  eliminated
or modified  most of the  restrictive  covenants  previously  contained  in such
indenture.


9 5/8% SENIOR SUBORDINATED NOTES DUE 2002, SERIES A

     IHS has outstanding $25,000 aggregate principal amount of its 9 5/8% Senior
Subordinated  Notes due 2002, Series A (the "9 5/8% Senior Notes").  Interest on
the 9 5/8% Senior Notes is payable  semi-annually on May 31 and November 30. The
9 5/8% Senior  Notes are not  redeemable  prior to  maturity.  In the event of a
change in control of IHS (as  defined in the  indenture  under  which the 9 5/8%
Senior Notes were issued (the "9 5/8% Senior Notes Indenture")),  each holder of
9 5/8% Senior Notes may require IHS to  repurchase  such  holder's 9 5/8% Senior
Notes,  in whole or in  part,  at 101% of the  principal  amount  thereof,  plus
accrued  interest to the  repurchase  date.  The 9 5/8% Senior  Notes  Indenture
contains  certain  limited  covenants,  including a covenant with respect to the
application of the proceeds of certain asset sales.

     On May 30, 1997, IHS repurchased $114,975,000 aggregate principal amount of
the 9 5/8% Senior Notes pursuant to a cash tender offer.  As a condition of IHS'
obligation  to  repurchase  tendered  9 5/8%  Senior  Notes,  tendering  holders
consented to amendments to the 9 5/8% Senior Notes Indenture which eliminated or
modified  most  of  the  restrictive  covenants  previously  contained  in  such
indenture.


CERTAIN OTHER OBLIGATIONS


     IHS'  contingent   liabilities   (other  than  liabilities  in  respect  of
litigation  and  the  contingent  payment  in  respect  of  the  First  American
Acquisition) aggregated  approximately $77.3 million as of June 30, 1997. IHS is
obligated to purchase its  Greenbriar  facility upon a change in control of IHS.
The net purchase price of the facility is  approximately  $4.0 million.  IHS has
guaranteed  approximately  $6.6  million of the  lessor's  indebtedness.  IHS is
required,  upon certain  defaults under the lease,  to purchase its Orange Hills
facility  at a  purchase  price  equal to the  greater  of $7.1  million  or the
facility's fair market value. IHS has guaranteed approximately $4.0 million owed
by Tutera  Group,  Inc.  and Sunset Plaza  Limited  Partnership,  a  partnership
affiliated with a partnership in which IHS has a 49% interest, to Finova Capital
Corporation.  IHS has established  several irrevocable standby letters of credit
with the Bank of Nova  Scotia to secure  certain of IHS'  self-insured  workers'
compensation  obligations,  health benefits and other  obligations.  The maximum
obligation  was $15.7 million at June 30, 1997. IHS has also  established  three
irrevocable standby letters of credit in the total amount of $10.7 million.  IHS
has  guaranteed  approximately  $539,000 owed by a managed  facility to National
Health  Investors Inc. and  approximately  $8.9 million owed by Litchfield Asset
Management  Corporation  to National  Health  Investors  Inc. IHS has guaranteed
approximately  $4.8  million owed by CCA, a related  party  company to which IHS
provides  certain  management  services,  to Daiwa  Healthco-2 LLC. IHS has also
guaranteed  approximately  $10.0  million  owed by CCA to Health and  Retirement
Properties Trust under a loan and lease financing  agreement.  In addition,  IHS
has  established an  irrevocable  standby line of credit with CCA with a maximum
amount of $5.0 million available to CCA at June 30, 1997. Subsequent to June 30,
1997, IHS established an additional $5.0 million credit  facility.  On August 7,
1997, IHS commenced a 


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cash tender offer for all the  outstanding  stock of CCA at a price of $4.00 per
share.  See "IHS Recent  Developments  - Proposed  Acquisitions  - Proposed  CCA
Acquisition." IHS owns warrants to purchase approximately 13.5% of CCA, and IHS'
Chairman and Chief Executive Officer  beneficially owns  approximately  21.0% of
CCA's  outstanding  common  stock  (excluding  the  warrants  owned by IHS).  In
addition,  IHS has obligations under operating leases aggregating  approximately
$212.1 million at June 30, 1997. In addition,  with respect to certain  acquired
businesses IHS is obligated to make certain  contingent  payments if earnings of
the  acquired  businesses  increase  or earnings  targets  are met.  IHS is also
obligated under certain  circumstances to make contingent payments of up to $155
million  in  respect  of  the  First  American  Acquisition.   See  "IHS  Recent
Developments - First American Acquisition." 

     IHS leases ten facilities from  Meditrust,  a  publicly-traded  real estate
investment trust. With respect to all the facilities leased from Meditrust,  IHS
is obligated to pay additional rent in an amount equal to a specified percentage
(generally  five percent) of the amount by which the  facility's  gross revenues
exceed a specified  amount  (generally  based on the  facility's  gross revenues
during its first year of  operation).  If an event of default  occurs  under any
Meditrust lease or any other agreement IHS has with Meditrust, Meditrust has the
right to require IHS to purchase the facility  leased from the  partnership at a
price equal to the higher of the then  current fair market value of the facility
or the original  purchase  price of the facility paid by Meditrust plus the cost
of certain  capital  expenditures  paid for by Meditrust,  an adjustment for the
increase in the cost of living index since the commencement of the lease and all
rent then due and  payable,  all such amounts to be  determined  pursuant to the
prescribed  formula  contained in the lease.  In addition,  each Meditrust lease
provides that a default under any other  Meditrust  lease or any other agreement
IHS has with  Meditrust  constitutes  a  default  under  such  lease.  Upon such
default,  Meditrust  has the right to  terminate  the leases and to seek damages
based upon lost rent.


                                    EXPERTS

     The consolidated  financial statements of Integrated Health Services,  Inc.
and  subsidiaries  as of December 31, 1995 and 1996 and for each of the years in
the  three-year  period  ended  December  31, 1996,  have been  incorporated  by
reference  into this  Joint  Proxy  Statement/Prospectus  and  elsewhere  in the
Registration  Statement  in reliance  upon the report of KPMG Peat  Marwick LLP,
independent certified public accountants,  incorporated by reference herein, and
upon the  authority  of said firm as experts in  accounting  and  auditing.  The
report of KPMG Peat  Marwick  LLP refers to changes in  accounting  methods,  in
1995, to adopt  Statement of Financial  Accounting  Standards No. 121 related to
impairment  of long-lived  assets and, in 1996,  from  deferring and  amortizing
pre-opening  costs of Medical Specialty Units to recording them as expenses when
incurred.

     The  financial  statements  and the related  financial  statement  schedule
incorporated in this Joint Proxy  Statement/Prospectus  by reference from RoTech
Medical  Corporation's  Annual  Report on Form 10-K for the year  ended July 31,
1996 have been audited by Deloitte & Touche LLP, independent auditors, as stated
in their report,  which is  incorporated  herein by reference,  and have been so
incorporated in reliance upon the report of such firm given upon their authority
as experts in accounting and auditing.

     The  consolidated  financial  statements of First  American  Health Care of
Georgia,  Inc. as of December 31, 1994 and 1995 and for each of the years in the
three year period ended December 31, 1995,  have been  incorporated by reference
in this Joint Proxy  Statement/Prospectus and in the Registration Statement from
IHS' Current Report on Form 8-K/A,  as amended (dated October 17, 1996 and filed
with the  Commission  on July 11, 1997) in reliance upon the report of KPMG Peat
Marwick LLP, independent certified public accountants, incorporated by reference
herein,  and upon the  authority  of said  firm as  experts  in  accounting  and
auditing.  The report of KPMG Peat Marwick LLP contains an explanatory paragraph
regarding the uncertainty with respect to certain contingent  payments which may
be  payable  under  a  settlement  agreement  with  the  Health  Care  Financing
Administration.

     Representatives  of KPMG Peat  Marwick  LLP and  Deloitte  & Touche LLP are
expected  to be  present  at the IHS  Special  Meeting  and the  RoTech  Special
Meeting,  respectively,  will have the  opportunity  to make a statement if they
desire to do so and will be available to respond to appropriate questions.


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                                 LEGAL MATTERS


     The validity of the shares of IHS Common Stock being offered hereby will be
passed upon for IHS by Fulbright & Jaworski L.L.P.,  New York, New York, counsel
to IHS. At August 31, 1997, partners of Fulbright & Jaworski L.L.P.
owned an aggregate of 300 shares of IHS Common Stock.


     Certain  federal income tax  consequences of the Merger will be passed upon
for IHS by Fulbright & Jaworski  L.L.P.,  New York,  New York, and for RoTech by
Winderweedle,  Haines, Ward & Woodman, P.A., Orlando,  Florida. As of August 31,
1997, shareholders of Winderweedle, Haines, Ward & Woodman, P.A., owned or had a
financial  interest  in an  aggregate  of 3,264  shares of RoTech  Common  Stock
(including 1,764 shares of RoTech Common Stock representing  undistributed stock
unit  benefits  that  William A.  Walker II has a  financial  interest  in under
RoTech's  Restricted  Stock Plan), and such firm owns options to purchase up to,
but not exceeding in the  aggregate,  20,000 shares of RoTech's  Common Stock at
$13.88 per share and 20,000  shares of RoTech  Common Stock at $19.50 per share.
The options are exercisable until June 30, 2000 and June 30, 2001, respectively.


                             ADDITIONAL INFORMATION

STOCKHOLDER PROPOSALS

     RoTech  Stockholders.  In order to be eligible  for  inclusion  in RoTech's
proxy  solicitation  materials for its 1997 annual meeting of stockholders,  any
stockholder  proposal to be considered at such meeting should have been received
by RoTech on or before July 14, 1997.  RoTech will not be required to include in
its proxy solicitation  material a stockholder  proposal which is received after
that date or which  otherwise  fails to meet the  requirements  for  stockholder
proposals  established  by  regulations  of the  Commission.  If the  Merger  is
consummated, there will be no 1997 annual meeting of RoTech stockholders.


     IHS  Stockholders.  In order to be  eligible  for  inclusion  in IHS' proxy
solicitation  materials  for  its  1998  annual  meeting  of  stockholders,  any
stockholder proposal to be considered at such meeting must have been received by
IHS not later than  January 9, 1998.  IHS will not be required to include in its
proxy solicitation  material a stockholder proposal which is received after that
date or  which  otherwise  fails  to meet  the  requirements  for a  stockholder
proposal  established  by  regulations  of the  Commission.  IHS' By-laws impose
certain  requirements  which  must be  complied  with  in  connection  with  the
submission of stockholder proposals. See "Comparison of Rights of IHS and RoTech
Stockholders  -  Advance  Notice   Provisions  for  Stockholder   Proposals  and
Stockholder Nominations of Directors." 


OTHER BUSINESS

     The Rotech and IHS Boards of Directors  are not aware of any business to be
acted upon at the Special Meetings other than as described herein.  If, however,
other  matters  are  properly  brought  before  the  Special  Meetings,  or  any
adjournments or  postponements  thereof,  the persons  appointed as proxies will
have  discretion  to vote or act thereon  according  to their best  judgment and
applicable Commission rules.


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                                                                      APPENDIX A


                         AGREEMENT AND PLAN OF MERGER

       This  Agreement  and Plan of Merger  (the "Plan of Merger") is made as of
the 6th day of July, 1997, among  INTEGRATED  HEALTH SERVICES,  INC., a Delaware
corporation  ("IHS"),  and IHS  ACQUISITION  XXIV,  INC., a Florida  corporation
("Merger  Sub"),  and  ROTECH  MEDICAL   CORPORATION,   a  Florida   corporation
("RoTech").

       WHEREAS,  the respective  Boards of Directors of RoTech,  IHS, and Merger
Sub have approved the merger of Merger Sub with and into RoTech (the  "Merger"),
upon the terms and subject to the  conditions  set forth  herein,  whereby  each
share of Common Stock, par value $.0002 per share, of RoTech (the "RoTech Common
Stock" and the issued and outstanding shares thereof, the "RoTech Shares"),  not
owned  directly or  indirectly  by RoTech,  will be converted  into the right to
receive the Merger Consideration (as herein defined); and

       WHEREAS,  each of RoTech,  IHS,  and Merger Sub  desires to make  certain
representations,  warranties,  covenants,  and agreements in connection with the
Merger and also to prescribe various conditions to the Merger; and

       WHEREAS,  it is intended that the Merger shall qualify for federal income
tax  purposes as a  reorganization  within the meaning of Section  368(a) of the
Internal Revenue Code of 1986, as amended,  and, for accounting  purposes,  as a
purchase and not as a pooling of interests.

       NOW,  THEREFORE,  in  consideration  of the premises and mutual covenants
contained herein, the parties, intending to be legally bound, agree as follows:




                             ARTICLE I: THE MERGER

       1.1 THE MERGER. Upon the terms and subject to the conditions set forth in
this Plan of Merger and in accordance  with the General  Corporation  Law of the
State of Florida (the "FBCA"), at the Effective Time (as defined herein), Merger
Sub shall be merged with and into RoTech in  accordance  with the  provisions of
Section  607.1101  of the FBCA.  Following  the  Effective  Time,  the  separate
existence of Merger Sub shall cease,  and RoTech shall continue as the surviving
corporation in the Merger  (hereinafter  sometimes referred to as the "Surviving
Corporation") as a business corporation incorporated under the laws of the State
of Florida under the name "RoTech Medical Corporation", and shall succeed to and
assume  all the rights and  obligations  of Merger Sub and RoTech in  accordance
with the FBCA.

       1.2 EFFECTIVE  TIME OF THE MERGER.  The Merger shall become  effective at
such time (the "Effective  Time") as a duly executed  Certificate of Merger (the
"Certificate  of Merger") is filed with the  Secretary  of State of the State of
Florida.

       1.3 CLOSING. The closing (the "Closing") of the Merger will take place at
the New York  offices  of Blass & Driggs  on a date and at the time to be agreed
upon by the  parties  (the  "Closing  Date")  which is not later than the second
business day after  satisfaction  or waiver of the  conditions set forth in this
Plan of Merger,  but,  subject to Section 8.4, in no event later than  September
30, 1997, or such other date,  time, and place as shall be agreed upon among the
parties hereto.

       1.4 SURVIVING CORPORATION.

       (A) CERTIFICATE OF  INCORPORATION.  The Certificate of  Incorporation  of
           Merger Sub as in effect immediately prior to the Effective Time shall
           be the  Certificate of  Incorporation  of the Surviving  Corporation,
           until duly amended in  accordance  with the terms  thereof and of the
           FBCA.

       (B) BY-LAWS.  The By-laws of Merger Sub as in effect immediately prior to
           the Effective Time shall be the By-laws of the Surviving  Corporation
           until duly amended in accordance  with their terms and as provided by
           the Certificate of Incorporation of the Surviving Corporation and the
           FBCA.


                                      A-1
<PAGE>

       (C) DIRECTORS.  The directors of Merger Sub at the Effective  Time shall,
           from and after the Effective  Time, be the directors of the Surviving
           Corporation until their respective  successors have been duly elected
           or appointed and qualified or until their earlier death, resignation,
           or removal in accordance with the Surviving Corporation's Certificate
           of Incorporation and By-laws.

       (D) OFFICERS.  The  officers of Merger Sub at the  Effective  Time shall,
           from and after the  Effective  Time, be the officers of the Surviving
           Corporation   until  their  successors  have  been  duly  elected  or
           appointed and qualified or until their earlier death, resignation, or
           removal in accordance with the Surviving Corporation's Certificate of
           Incorporation and By-laws.

       (E) FURTHER  ACTION.  If at any time after the Effective  Time, IHS shall
           consider   that  any   further   deeds,   assignments,   conveyances,
           agreements, documents, instruments, or assurances in law or any other
           things are  necessary  or  desirable to vest,  perfect,  confirm,  or
           record  in the  Surviving  Corporation  the  title  to any  property,
           rights,  privileges,  powers,  and franchises of Merger Sub by reason
           of, or as a result  of, the  merger,  or  otherwise  to carry out the
           provisions  of this Plan of Merger,  the officers of Merger Sub shall
           execute  and  deliver,   upon  IHS's  request,   any  instruments  or
           assurances,  and do all  other  things  necessary  or proper to vest,
           perfect,   confirm,  or  record  title  to  such  property,   rights,
           privileges,  powers, and franchises in the Surviving Corporation, and
           otherwise to carry out the provisions of this Plan of Merger.


         ARTICLE II: EFFECT OF THE MERGER ON THE CAPITAL STOCK OF THE
               CONSTITUENT CORPORATIONS; EXCHANGE OF CERTIFICATES

       2.1  SHARES  OF  THE  CONSTITUENT  AND THE SURVIVING CORPORATIONS. At the
Effective Time, by virtue of the Merger:

       (A) Each  share of capital  stock of Merger  Sub  issued and  outstanding
           immediately  prior to the Effective  Time,  without any action on the
           part of the holder  thereof,  shall be converted  into one fully paid
           and nonassessable share of common stock, par value $.01 per share, of
           the Surviving Corporation.

       (B) Each  share of  RoTech  Common  Stock  that is owned by RoTech or any
           wholly owned subsidiary of RoTech shall automatically be canceled and
           retired and shall cease to exist.

       (C) Each other share of RoTech Common Stock issued and outstanding at the
           Effective  Time,  without any further  action by the holder  thereof,
           shall be converted into the right to receive, and become exchangeable
           for a merger consideration (the "Merger Consideration") consisting of
           .5806  (the  "Exchange   Ratio")  validly  issued,   fully  paid  and
           nonassessable  shares of common stock,  $.001 par value,  of IHS (the
           "IHS Common Stock," shares  thereof,  "IHS Shares" and the IHS Shares
           to be issued pursuant hereto, the "IHS Merger Shares").

       (D) If after the date  hereof and prior to the  Effective  Time IHS shall
           have declared a stock split (including a reverse split) of IHS Common
           Stock  or a  dividend  payable  in IHS  Common  Stock,  or any  other
           distribution  of securities or dividend (in cash (other than ordinary
           cash  dividends)  or  otherwise)  to holders of IHS Common Stock with
           respect to their IHS Common Stock (including  without limitation such
           a   distribution    or   dividend   made   in   connection   with   a
           recapitalization,     reclassification,     merger,    consolidation,
           reorganization or similar  transaction) then the Merger Consideration
           shall be appropriately adjusted to reflect such stock split, dividend
           or other distribution of securities.


                                      A-2
<PAGE>

     2.2 EXCHANGE OF CERTIFICATES.

       (A) EXCHANGE  AGENT.  Prior to the Effective  Time, IHS shall designate a
           bank or  trust  company  or  similar  entity  that is  authorized  to
           exercise  corporate  trust or stock  powers,  and which is reasonably
           acceptable  to RoTech,  to act as Exchange  Agent with respect to the
           Merger  (the  "Exchange  Agent").  At the  Effective  Time,  IHS will
           deposit  with  the  Exchange  Agent,  in  trust  for the  holders  of
           certificates   which   immediately   prior  to  the  Effective   Time
           represented    outstanding   RoTech   Shares   (the   "Certificates")
           certificates  representing the aggregate number of IHS Merger Shares,
           into  which  the  RoTech  Shares  were  converted  in the  Merger  in
           accordance with Section 2.1(c) hereof (as adjusted in accordance with
           subsection (c), below, with respect to dividends or distributions and
           in accordance with subsection (e), below,  with respect to fractional
           shares).

     (B)   EXCHANGE PROCEDURES.  As soon as reasonably practicable, but no later
           than ten (10) business days after the Effective Time, IHS shall cause
           the Exchange  Agent to mail to each holder of record of a Certificate
           whose  shares  were  converted  into  the  right  to  receive  Merger
           Consideration pursuant to Section 2.1(c), (i) a letter of transmittal
           (which shall  specify that  delivery  shall be effected,  and risk of
           loss and title to the Certificates  shall pass, only upon delivery of
           the Certificates to the Exchange Agent, and shall be in such form and
           have  such   representations  and  warranties  as  to  ownership  and
           authority,  and  shall  contain  such  other  provisions  as IHS  may
           reasonably  specify) and (ii)  instructions  for use in effecting the
           surrender  of  the   Certificates   in  exchange   for   certificates
           representing   the  IHS  Merger   Shares  into  which  RoTech  Shares
           previously   represented  by  such  Certificates  were  converted  in
           accordance  with  Section 2.1 (as adjusted in respect of dividends or
           distributions  and fractional  shares in accordance with  subsections
           (c)  and  (e)  below).   Upon  surrender  of  any   Certificate   for
           cancellation  to the  Exchange  Agent,  together  with such letter of
           transmittal,   duly  executed,   and  such  other  documents  as  may
           reasonably  be required  by the  Exchange  Agent,  the holder of such
           Certificate  shall be  entitled  to  receive in  exchange  therefor a
           certificate representing that number of whole IHS Merger Shares which
           such holder has the right to receive  pursuant to the  provisions  of
           Section 2.1 (as adjusted  pursuant to subsections (c) and (e) below),
           and the Certificate so surrendered  shall  forthwith be canceled.  In
           the event of a transfer of  ownership  of RoTech  Shares which is not
           registered  in  the  transfer   records  of  RoTech,   a  certificate
           representing  the proper  number of IHS  Merger  Shares  required  by
           Section 2.1 (as adjusted  pursuant to subsections  (c) and (e) below)
           may be issued  and  delivered  to a person  other  than the person in
           whose name the  Certificate so  surrendered  is  registered,  if such
           Certificate shall be properly endorsed or otherwise be in proper form
           for transfer  and the person  requesting  such payment  shall pay any
           transfer or other taxes  required by reason of the issuance of shares
           of IHS Common Stock to a person other than the  registered  holder of
           such  Certificate or shall establish to the  satisfaction of IHS that
           such tax has been paid or is not  applicable.  Until  surrendered  as
           contemplated by this Section 2.2, each Certificate shall be deemed at
           all times after the  Effective  Time to  represent  only the right to
           receive the IHS Merger Shares into which RoTech Shares represented by
           such  Certificate  were  converted and cash in lieu of any fractional
           shares of IHS Common  Stock.  No interest will be paid or will accrue
           on any cash  dividends or  distributions  payable with respect to IHS
           Merger Shares. To the extent permitted by law, former stockholders of
           record of RoTech shall be entitled to vote after the  Effective  Time
           at any  meeting  of IHS  stockholders  the number of whole IHS Merger
           Shares  into which  their  respective  RoTech  Shares are  converted,
           regardless of whether such holders have exchanged their  Certificates
           in accordance with this Section 2.2.

     (C)   DISTRIBUTIONS  WITH RESPECT TO  UNEXCHANGED  SHARES.  No dividends or
           other  distributions  with  respect to IHS Common Stock with a record
           date  after the  Effective  Time  shall be paid to the  holder of any
           unsurrendered  Certificate  with  respect  to the IHS  Merger  Shares
           represented  thereby  and no cash  payment  shall be paid to any such
           holder until the surrender of such  Certificate  in  accordance  with
           this Article II. Subject to the effect of applicable laws,  following
           surrender of any such Certificate,  there shall be paid to the holder
           of the


                                      A-3
<PAGE>

           certificate  representing  whole shares of IHS Common Stock issued in
           exchange therefor, without interest, in addition to the other amounts
           payable  under this Section  2.2, (i) at the time of such  surrender,
           the amount of any cash payable in lieu of a  fractional  share of IHS
           Common  Stock to which such  holder is  entitled  pursuant to Section
           2.3(e)  and the amount of  dividends  or other  distributions  with a
           record date after the Effective Time theretofore paid with respect to
           such  whole  shares of IHS Common  Stock and (ii) at the  appropriate
           payment date, the amount of dividends or other  distributions  with a
           record date after the Effective  Time but prior to such surrender and
           with a payment date subsequent to such surrender payable with respect
           to such whole shares of IHS Common Stock.

     (D)   NO FURTHER  OWNERSHIP RIGHTS IN ROTECH SHARES.  All IHS Merger Shares
           issued upon the surrender for exchange of  Certificates in accordance
           with the terms of this Article II shall be deemed to have been issued
           (and paid) in full  satisfaction  of all rights  pertaining to RoTech
           Shares theretofore  represented by such  Certificates.  If, after the
           Effective   Time,   Certificates   are  presented  to  the  Surviving
           Corporation  or the  Exchange  Agent for any  reason,  they  shall be
           canceled  and  exchanged  as provided in this  Article II,  except as
           otherwise provided by applicable law.

     (E)   NO  FRACTIONAL   SHARES.   No  certificates  or  scrip   representing
           fractional  shares  of IHS  Common  Stock  shall be  issued  upon the
           surrender for exchange of  Certificates,  and such  fractional  share
           interests will not entitle the owner thereof to vote or to any rights
           of a stockholder of IHS.  Notwithstanding any other provision of this
           Agreement,  each holder of RoTech  Shares  exchanged  pursuant to the
           Merger who would  otherwise  have been entitled to receive a fraction
           of a share  of IHS  Common  Stock  (after  taking  into  account  all
           Certificates  delivered  by  such  holder)  shall  receive,  in  lieu
           thereof,   cash  (without  interest)  in  an  amount  equal  to  such
           fractional  part of a share of IHS  Common  Stock  multiplied  by the
           Average IHS Trading  Price.  "Average  IHS Trading  Price"  means the
           average  closing New York Stock  Exchange price of such stock for the
           thirty (30)  trading  day period  ending on the date which is two (2)
           trading days prior to the Effective Time.

     (F)   TERMINATION  OF EXCHANGE  FUND.  Any stock  certificates  that remain
           undistributed  to the holders of the  Certificates for six (6) months
           after the Effective  Time shall be delivered by the Exchange Agent to
           IHS, upon demand,  and any holders of the  Certificates  who have not
           theretofore  complied with this Article II shall thereafter look only
           to IHS for  payment  of Merger  Consideration  and any  dividends  or
           distributions with respect to IHS Merger Shares.

     (G)   NO LIABILITY.  None of IHS,  Merger Sub, RoTech or the Exchange Agent
           shall be liable to any person in respect of any IHS Merger Shares (or
           dividends  or  distributions  with  respect  thereto)  delivered to a
           public  official  pursuant  to  any  applicable  abandoned  property,
           escheat  or  similar  law.  If any  Certificates  shall not have been
           surrendered  prior  to the end of the  applicable  period  after  the
           Effective  Time  under  escheat  laws (or  immediately  prior to such
           earlier date on which any IHS Merger  Shares,  or any cash in respect
           of  such  Certificates  would  otherwise  escheat  to or  become  the
           property  of any  governmental  entity),  any such  shares or cash in
           respect  of such  Certificates  shall,  to the  extent  permitted  by
           applicable  law,  become the property of the  Surviving  Corporation,
           free and clear of all claims or  interest  of any  person  previously
           entitled thereto.

       2.3 CORPORATE ACTS OF MERGER SUB. All corporate  acts,  plans,  policies,
approvals  and  authorizations  of Merger Sub,  its  stockholders,  its Board of
Directors,  committees  elected or appointed by the Board of Directors,  and all
officers and agents,  valid  immediately  prior to the  Effective  Time shall be
those of the Surviving Corporation and shall be as effective and binding thereon
as they were with  respect to Merger Sub to the  extent  not  inconsistent  with
those of this Plan of Merger.


                                      A-4
<PAGE>

             ARTICLE III: REPRESENTATIONS AND WARRANTIES OF ROTECH

       ROTECH HEREBY REPRESENTS AND WARRANTS TO IHS AS FOLLOWS:

       3.1  ORGANIZATION  AND STANDING OF ROTECH.  RoTech is a corporation  duly
organized,  validly existing and in good standing under the laws of the State of
Florida.  Copies of RoTech's  Articles of  Incorporation  and  By-Laws,  and all
amendments  thereof to date,  have been  delivered  to IHS and are  complete and
correct.  RoTech has the power and  authority to own the property and assets now
owned by it and to conduct the business presently being conducted by it.

       3.2  ROTECH  CAPITAL  STOCK.  RoTech's  authorized  capital  consists  of
50,000,000  shares of  Common  Stock,  par  value  $.0002  per  share,  of which
26,152,744  shares are issued and  outstanding  as of April 30,  1997 and 41,771
shares are held in treasury. All of the issued and outstanding RoTech Shares are
duly and validly issued,  fully paid and  nonassessable.  Except as set forth on
Exhibit 3.2 to the Disclosure Schedule delivered to IHS by RoTech at the time of
the  execution  and  delivery  of this Plan of Merger  (the  "RoTech  Disclosure
Schedule"),  there are no options, warrants, or similar rights granted by RoTech
or any other agreements to which RoTech is a party providing for the issuance or
sale by it of any  additional  securities.  There is no liability  for dividends
declared or accumulated but unpaid with respect to any RoTech Shares.  Except as
set forth on  Exhibit  3.2 to the  RoTech  Disclosure  Schedule,  and  except as
permitted by this Plan of Merger,  since the date of the "RoTech  Balance Sheet"
(as  defined in Section  3.9,  below)  except  pursuant  to  options,  warrants,
conversion rights or other contractual  rights existing on such date, RoTech has
not  issued  any  shares of its  capital  stock,  effected  any  stock  split or
otherwise changed its capitalization as it existed on such date.


       3.3  SUBSIDIARIES.  Except  as set  forth on  Exhibit  3.3 to the  RoTech
Disclosure Schedule, RoTech does not own stock in and does not control, directly
or indirectly,  any other  corporation,  association  or business  organization.
Except as set forth on Exhibit  3.3 to the RoTech  Disclosure  Schedule,  RoTech
does not own, directly or indirectly, an equity interest in, and RoTech does not
control, directly or indirectly, any other operating joint venture,  partnership
or limited liability  company.  Except as set forth on Exhibit 3.3 to the RoTech
Disclosure  Schedule,  there  are no  outstanding  options,  warrants  or  other
agreements  pursuant  to which any person or entity has a right to acquire or be
issued any capital stock or other interest in any RoTech Subsidiary. Exhibit 3.3
to the RoTech  Disclosure  Schedule  accurately  sets forth RoTech's  percentage
ownership  interest in each such  entity.  Except as set forth on Exhibit 3.3 to
the RoTech Disclosure Schedule,  each entity listed on Exhibit 3.3 to the RoTech
Disclosure  Schedule (each a "RoTech  Subsidiary" and collectively,  the "RoTech
Subsidiaries")  is a corporation,  partnership,  limited  partnership or limited
liability  company duly organized,  validly  existing and in good standing under
the laws of its  jurisdiction of  incorporation.  Except as set forth on Exhibit
3.3 to the RoTech Disclosure Schedule,  each RoTech Subsidiary has all necessary
corporate, partnership, limited partnership or limited liability company, as the
case may be, power to own its properties and assets and to carry on its business
as  presently  conducted.  Except  as set  forth on  Exhibit  3.3 to the  RoTech
Disclosure  Schedule,  RoTech  is not  subject  to any  contractual  obligation,
contingent or otherwise,  to purchase,  and there are no rights to acquire,  any
additional  interest in any such  partnership or joint venture or any preemptive
rights or rights of first  refusal with respect to any  outstanding  interest in
any such partnership or joint venture.

       3.4  FOREIGN  QUALIFICATIONS.  Except as set forth on Exhibit  3.4 to the
RoTech  Disclosure  Schedule,  each of RoTech  and the  RoTech  Subsidiaries  is
qualified  to do business as a foreign  corporation  and is in good  standing in
each jurisdiction where the nature or character of the property owned, leased or
operated  by it or the  nature  of the  business  transacted  by it  makes  such
qualification necessary.

       3.5 POWER AND AUTHORITY.  Subject to the  satisfaction  of the conditions
precedent set forth herein,  RoTech has the corporate power to execute,  deliver
and perform this Plan of Merger and all agreements and other documents  executed
and  delivered  or to be executed  and  delivered by it pursuant to this Plan of
Merger (the  "Transaction  Documents"),  and subject to the  satisfaction of the
conditions  precedent  set forth  herein  has taken all action  required  by its
Certificate of Incorporation,  by-laws or otherwise, to authorize the execution,
delivery  and  performance  of this Plan of Merger and such  related  documents.
Except  as set forth on  Exhibit  3.5 to the  RoTech  Disclosure  Schedule,  the
execution and


                                      A-5
<PAGE>

delivery of this Plan of Merger does not and, subject to the receipt of required
stockholder  approval the consummation of the Merger and the consummation of the
transaction  contemplated  hereby  will  not,  violate  any  provisions  of  the
Certificate  of  Incorporation  or  By-laws of RoTech or any  provisions  of, or
result in the acceleration of any obligation  under, any mortgage,  lien, lease,
agreement,  instrument order  arbitration  award,  judgment or decree,  to which
RoTech or any RoTech Subsidiary is a party, or by which any of them is bound, or
violate  any  restrictions  of any kind to which  any of them are  subject.  The
execution  and delivery of this Plan of Merger has been approved by the Board of
Directors of RoTech.

       3.6 CONSENTS. Except as set forth on Exhibit 3.6 to the RoTech Disclosure
Schedule, no authorization,  consent, approval, license, exemption by, filing or
registration  with any  court or  governmental  department,  commission,  board,
bureau, agency or instrumentality,  domestic or foreign, is or will be necessary
in connection with the execution,  delivery and performance of this Agreement or
any of the Transaction Documents by RoTech.

       3.7 ASSETS.  As of the Closing,  the  consolidated  assets of RoTech will
include  all of the  tangible  and  intangible  assets of  RoTech  as  presently
constituted,  including,  without limitation,  cash and accounts receivable, and
will  be  sufficient  to  carry  on  the  business  of  RoTech  and  the  RoTech
Subsidiaries  in the  ordinary  course as it is presently  conducted;  provided,
however, that such assets shall not include inventory, supplies and other assets
disposed  of in the  ordinary  course  of  business,  consistent  with the prior
practice of RoTech's business.

       3.8 TRADEMARKS.  Exhibit 3.8 to the RoTech Disclosure Schedule sets forth
a complete and accurate list of all  trademarks,  service marks, or applications
for any of the same,  copyrights,  and other items of intellectual property that
are owned,  possessed, or used by and which are material to RoTech or any of the
RoTech  Subsidiaries.  There  are no claims or  proceedings  pending  or, to the
knowledge  of RoTech,  overtly  threatened  against  RoTech or any of the RoTech
Subsidiaries  asserting that the use of any of the aforementioned  properties or
rights  infringes  the rights of any other  person,  and,  to the  knowledge  of
RoTech,  RoTech is not  infringing in any material  respect on the  intellectual
property rights of any other person.

       3.9 REPORTS AND FINANCIAL STATEMENTS.

       (A) RoTech has timely  filed all  reports  required  to be filed with the
           Securities  and Exchange  Commission  (the "SEC")  pursuant to and in
           accordance  with the  Securities  Exchange  Act of 1934,  as  amended
           (together with the rules and regulations promulgated thereunder,  the
           "Exchange Act") and the applicable  rules of the NASD,  since January
           1,  1995  (collectively,  as  heretofore  amended,  the  "RoTech  SEC
           Reports"),  and has  previously  furnished  to IHS true and  complete
           copies of all such RoTech SEC Reports.  None of such  reports,  as of
           their respective dates,  contained any untrue statement of a material
           fact or  omitted  to state a  material  fact  required  to be  stated
           therein or necessary to make the statements  therein, in light of the
           circumstances  in which they were made, not  misleading.  Each of the
           balance sheets  (including the related notes)  included in the RoTech
           SEC Reports presents fairly in all material respects the consolidated
           financial  position of RoTech and the RoTech  Subsidiaries  as of the
           respective  dates  thereof,   and  the  other  related   consolidated
           financial  statements  (including the related notes) included therein
           present fairly in all material respects the results of operations and
           cash flows of RoTech and the RoTech  Subsidiaries  for the respective
           periods  or as of the  respective  dates  set forth  therein,  all in
           conformity with generally accepted accounting principles consistently
           applied ("GAAP") except as otherwise noted therein.


       (B) Each  of  the  balance  sheets  included  in  the  "RoTech  Quarterly
           Financial  Statements"  (as defined in Section 7.9)  presents or will
           present  fairly in all  material  respects,  as the case may be,  the
           consolidated financial position of RoTech and the RoTech Subsidiaries
           as  of  the  respective   dates   thereof,   and  the  other  related
           consolidated  financial  statements  included therein present or will
           present  fairly in all  material  respects,  as the case may be,  the
           consolidated  results of operations  and cash flows of RoTech and the
           RoTech Subsidiaries,


                                      A-6
<PAGE>

           taken as a whole,  for the  periods  reflected  therein.  The balance
           sheets and  statements  of income  included  in the RoTech  Quarterly
           Financial Statements have been prepared in accordance with GAAP.

       (C) Except  as set  forth on  Exhibit  3.9(c)  to the  RoTech  Disclosure
           Schedule,   there  are  no  liabilities  of  RoTech  and  the  RoTech
           Subsidiaries on a consolidated basis which exceed $250,000 in any one
           case or $500,000 in the aggregate and which are not reserved  against
           or  disclosed  in the  balance  sheet  dated  as of April  30,  1997,
           included in the RoTech SEC Reports (the "RoTech Balance  Sheet"),  as
           of the  date  thereof  whether  or not  they  are  required  to be so
           reserved or disclosed under GAAP.

       (D) Except  as  disclosed  on  Exhibit  3.9(d) to the  RoTech  Disclosure
           Schedule and in the notes to the  consolidated  financial  statements
           and Management's  Discussion and Analysis of Financial  Condition and
           Results  of  Operations  included  in the  RoTech  SEC  Reports,  the
           consolidated  financial statements included in the RoTech SEC Reports
           do not reflect any  non-recurring or extraordinary  income or expense
           reduction  in excess of  $500,000  in the  aggregate  not  identified
           therein.

       3.10 ACCOUNTS RECEIVABLE. The accounts receivable set forth on the RoTech
Balance Sheet, and all accounts  receivable  arising since the date thereof,  in
respect of the  business of RoTech and the RoTech  Subsidiaries  represent  bona
fide  claims of RoTech and the RoTech  Subsidiaries  against  debtors for sales,
services  performed,  or other charges arising on or before the date hereof, and
all the goods delivered and services  performed which gave rise to said accounts
were delivered or performed in material  compliance with the applicable  orders,
contracts, or customer requirements.  Said accounts receivable are subject to no
material defenses, counterclaims, or rights of set-off and are fully collectible
in the ordinary course of business, except in the aggregate to the extent of the
appropriate reserves for doubtful accounts receivable as set forth on the RoTech
Balance  Sheet and, in the case of accounts  receivable  arising  since the date
thereof,  in the  aggregate  to the  extent  of a  reasonable  reserve  rate for
doubtful accounts receivable which is not greater than the rate reflected by the
reserve for doubtful accounts on the RoTech Balance Sheet.

       3.11 EMPLOYEE BENEFIT PLANS; EMPLOYMENT MATTERS.

       (A) Except  as  set  forth  on  Exhibit  3.11  to the  RoTech  Disclosure
           Schedule, neither RoTech nor any RoTech Subsidiary has established or
           maintains  or is  obligated  to make  contributions  to or  under  or
           otherwise  participate  in (i) any bonus or other  type of  incentive
           compensation plan, program, or arrangement  (whether or not set forth
           in a written document), (ii) any pension, profit-sharing, retirement,
           or other plan,  program,  or arrangement,  or (iii) stock  ownership,
           stock  purchase,  phantom  stock,  retirement,  vacation,  severance,
           disability,  death  benefit,  hospitalization,  or any other employee
           benefit plan, fund, or program,  including, but not limited to, those
           described in Section 3(3) of ERISA.  All such plans listed on Exhibit
           3.11  (individually,  a "RoTech Plan" and  collectively,  the "RoTech
           Plans") have been operated and administered in all material  respects
           in accordance with, as applicable,  ERISA, the Age  Discrimination in
           Employment  Act of  1967,  as  amended,  and the  related  rules  and
           regulations  adopted by those federal  agencies  responsible  for the
           administration  of such  laws.  No act or failure to act by RoTech or
           any RoTech Subsidiary has resulted in a "prohibited  transaction" (as
           defined  in ERISA)  with  respect  to the  RoTech  Plans  that is not
           subject to a statutory or regulatory exception. No "reportable event"
           (as defined in ERISA,  but  excluding  any event for which  notice is
           waived under the ERISA  regulations) has occurred with respect to any
           of the RoTech Plans which is subject to Title IV of ERISA.  No RoTech
           Plan has any  accumulated  funding  deficiency  or  liability  to the
           Pension Benefit Guaranty  Corporation.  Neither RoTech nor any of the
           RoTech  Subsidiaries has previously made, is currently  making, or is
           obligated in any way to make, any contributions to any multi-employer
           plan within the meaning of the Multi-Employer Pension Plan Amendments
           Act of 1980.

       (B) Except  as  set  forth  on  Exhibit  3.11  to the  RoTech  Disclosure
           Schedule,  neither RoTech nor any RoTech Subsidiary is a party to any
           oral or written (i) employment or consulting


                                      A-7
<PAGE>

           agreement  providing  for the  payment of  compensation  in excess of
           $150,000  per year,  (ii)  union,  guild,  or  collective  bargaining
           agreement  which agreement  covers  employees (nor is it aware of any
           union organizing activity currently being conducted in respect to any
           of its  employees),  (iii)  agreement  with any executive  officer or
           other key employee the benefits of which are contingent, or the terms
           of which  are  materially  altered  or permit  termination,  upon the
           occurrence of a transaction of the nature  contemplated  by this Plan
           of Merger,  or (iv)  agreement  or plan,  including  any stock option
           plan, stock appreciation rights plan, restricted stock plan, or stock
           purchase plan, any of the benefits of which will be increased, or the
           vesting of which will be accelerated, by the occurrence of any of the
           transactions  contemplated by this Plan of Merger or the value of any
           of the  benefits of which will be  calculated  on the basis of any of
           the transactions contemplated by this Plan of Merger.

       (C) During the two years  prior to the  Closing  Date,  there has been no
           material  adverse change in the  relationship  between RoTech and its
           employees  nor any  strike  or  material  labor  disturbance  by such
           employees  affecting  RoTech's  business  and,  to the  knowledge  of
           RoTech,  there is no indication that such a change,  strike, or labor
           disturbance is likely.

       3.12 MEDICARE AND MEDICAID PROGRAMS.  Except as set forth on Exhibit 3.12
to the RoTech Disclosure Schedule,  RoTech and the RoTech  Subsidiaries,  to the
extent  necessary to conduct  their  business in a manner  consistent  with past
practice,  are qualified for  participation  in Medicare and Medicaid  programs.
Except as set forth on Exhibit 3.12 to the RoTech Disclosure  Schedules,  RoTech
and the RoTech  Subsidiaries  have no liability with respect to recoupment  from
the Medicare or Medicaid programs or any other third party reimbursement  source
that would exceed the reserves or  allowances  made therefor as set forth on the
RoTech Balance Sheet,  and RoTech has no knowledge for the assertion of any such
recoupment claim that arose out of any transactions  completed prior to the date
hereof, and no Medicare or Medicaid  investigation,  survey, or audit is pending
or, to the knowledge of RoTech,  threatened with respect to the operation of the
business of RoTech or any of the RoTech Subsidiaries,  except to the extent that
such investigation,  survey, or audit is routine and is not reasonably likely to
have a material adverse effect on RoTech and the RoTech  Subsidiaries taken as a
whole. None of RoTech,  the RoTech  Subsidiaries or, to the knowledge of RoTech,
their  licensed  employees  has  been  convicted  of,  or  pled  guilty  or nolo
contendere to any criminal  offense related to any Medicare or Medicaid  program
while such person was an employee of RoTech or a RoTech  Subsidiary or after the
termination  of such person's  employment by RoTech or such  subsidiary for acts
committed while employed by RoTech or a RoTech Subsidiary, and, to the knowledge
of RoTech,  none of such  employees has committed any offense which may serve as
the basis for  suspension,  restriction,  or  exclusion  of RoTech or any RoTech
Subsidiary  from the  Medicare  and Medicaid  programs.  Since  January 1, 1996,
neither  RoTech nor any  RoTech  Subsidiary  has  received  any notice  from the
Medicare or Medicaid programs or any other third party  reimbursement  source to
the effect that the basis on which it receives reimbursement for its services is
to be changed.

       3.13 CONTRACTS, ETC.

       (A) All  contracts,  leases,  agreements,  and  arrangements  (other than
           employment  or consulting  agreements)  to which RoTech or any RoTech
           Subsidiary   is  a  party  which  impose  on  RoTech  or  any  RoTech
           Subsidiary, or confer on RoTech or any RoTech Subsidiary benefits, in
           any one instance,  in excess of $250,000 per year, are legally valid,
           binding,  and  enforceable in accordance with their terms and in full
           force and effect, and RoTech has provided IHS with the opportunity to
           review all such documents. RoTech and the RoTech Subsidiaries and, to
           the knowledge of RoTech, all other parties to such contracts, leases,
           agreements and arrangements have complied with the provisions of such
           contracts, leases, agreements, and arrangements,  and, RoTech and the
           RoTech Subsidiaries are not and, to the knowledge of RoTech, no other
           party is, in default thereunder, and no event has occurred which, but
           for the  passage  of time or the  giving  of  notice  or both,  would
           constitute  a default  thereunder.  Except  as set  forth on  Exhibit
           3.13(a) to the RoTech  Disclosure  Schedule,  none of such contracts,
           leases,  agreements, or arrangements will, by its terms, terminate as
           a result  of the  transactions  contemplated  hereby or  require  any
           consent from any obligor thereto in order to remain in full force and
           effect immediately after the Effective Time.


                                      A-8
<PAGE>

       (B) Set forth on Exhibit 3.13(b) to the RoTech  Disclosure  Schedule is a
           list of (i) all contracts to which RoTech or a RoTech Subsidiary is a
           party which cannot be terminated or do not terminate within 12 months
           or less without cause or which obligate  RoTech for amounts in excess
           of $250,000,  (ii) all  contracts  pursuant to which RoTech or any of
           the RoTech  Subsidiaries  receives  reimbursement for its services in
           excess  of  $250,000  per  year,   (iii)  all   agreements  or  other
           arrangements  pursuant to which RoTech or any RoTech Subsidiary is or
           may  become  obligated  to  pay  any  earn-out  or  other  contingent
           consideration  to any third party in connection  with the acquisition
           of any stock, assets, or business, and (iv) all contracts pursuant to
           which RoTech or any of the RoTech Subsidiaries receives reimbursement
           for its services which individually or in the aggregate provide for a
           reduction in the reimbursement payable under such contracts in excess
           of $500,000.

       (C) Except as set  forth on  Exhibit  3.13(c)  to the  RoTech  Disclosure
           Schedule,  neither  RoTech nor any RoTech  Subsidiary is party to any
           agreement for the sale of any of their respective assets, properties,
           or rights  (including  by means of any sale of their  capital  stock,
           merger,  or  otherwise)  in excess of  $100,000,  except for sales of
           inventory or supplies disposed of in the ordinary course of business,
           or has granted any right of first  refusal or similar  right in favor
           of any third party with respect to any portion of its  properties  or
           assets in excess of $100,000 (excluding  Permitted Liens described in
           Section  3.16) or  entered  into  any  non-competition  agreement  or
           similar  agreement  restricting its ability to engage in any business
           in any location.

       (D) True and complete copies of the contracts  listed on Exhibits 3.13(a)
           - 3.13(c) to the RoTech Disclosure  Schedule have been made available
           to IHS for inspection in connection with this Agreement.

       3.14  SUBSEQUENT  EVENTS.  Except  as  set  forth  on Exhibit 3.14 to the
RoTech  Disclosure  Schedule  or  as contemplated by this Plan of Merger, RoTech
has not, since the date of the RoTech Balance Sheet:

       (A) Incurred any material adverse change;

       (B) Discharged or satisfied any material lien or encumbrance,  or paid or
           satisfied any material  obligation or liability  (absolute,  accrued,
           contingent,  or  otherwise)  other  than  (i)  liabilities  shown  or
           reflected on the RoTech  Balance Sheet or (ii)  liabilities  incurred
           since the date of the RoTech Balance Sheet in the ordinary  course of
           business;

       (C) Increased or established any reserve for taxes or any other liability
           on its books or otherwise provided therefor,  except as may have been
           required  due to income from  operations  of RoTech since the date of
           the RoTech Balance Sheet in the ordinary course of business;


       (D) Mortgaged,  pledged,  or  subjected  to any  lien,  charge  or  other
           encumbrance any of the assets, tangible or intangible,  other than in
           the ordinary course of business;


       (E) Acquired  any  assets,   securities,   or  businesses  in  excess  of
           $5,000,000 in any one transaction or sold or transferred any material
           assets,  canceled any material debts or claims or waived any material
           rights;


       (F) Granted  any  general  or  uniform  increase  in the  rates of pay of
           employees  or granted any material  increase in salary  payable or to
           become payable by RoTech to any officer or employee,  consultant,  or
           agent (except as provided by contract or bonus plan),  or by means of
           any bonus or pension plan, contracts, or other commitment,  increased
           in a material  respect the  compensation  of any  Director,  officer,
           employee,  consultant or agent, provided that the foregoing shall not
           apply to the payment of bonuses to non-officer employees of RoTech in
           the ordinary course of business;



       (G) Except for this Plan of Merger and any other  agreement  executed and
           delivered pursuant to this Plan of Merger,  entered into any material
           transaction other than in the ordinary course of business;


                                      A-9
<PAGE>

       (H) Issued any stock, bonds, or other securities or any options or rights
           to  purchase  any of its  securities  other than in  connection  with
           existing agreements;  provided that, prior to the Effective Time, (i)
           RoTech shall be permitted  to issue  additional  options to employees
           for the purchase of up to 100,000  shares at an exercise price of not
           less than the market value of such stock as of the  respective  dates
           on which such options are granted,  (ii) RoTech shall be permitted to
           issue an  aggregate of up to 750,000  shares of its capital  stock in
           connection with acquisitions of assets,  securities,  and businesses,
           and (iii) RoTech shall be permitted to issue up to 20,000  additional
           shares of its capital stock in the aggregate for any other purpose;

       (I) Suffered  the loss of,  terminated  or modified any contract to which
           RoTech or a RoTech  Subsidiary is party  involving more than $250,000
           of annual  revenue or expense  other  than in  accordance  with their
           terms;

       (J) Declared,  set  aside,  or  paid  any  dividend  or  made  any  other
           distribution  or payment  with  respect to any shares of its  capital
           stock or, directly or indirectly, redeemed, repurchased, or otherwise
           acquired any shares of its capital stock or made any  commitment  for
           any such action;

       (K) Suffered any material casualty or loss not covered by insurance;

       (L) Made any material change in applicable accounting principles;

       (M) Closed any location  from which it operated its  business,  except in
           the ordinary course of business; or

       (N) Entered into any agreement or commitment to do any of the foregoing.

       3.15  LICENSES;  PERMITS;  CERTIFICATES  OF NEED.  RoTech and each RoTech
Subsidiary,  as applicable,  hold all licenses,  certificates of need, and other
governmental or other regulatory  permits,  authorizations or approvals required
for the operation of RoTech's business ("Licenses").  Exhibit 3.15 to the RoTech
Disclosure  Schedule sets forth a description  of all Licenses that are material
to the  operation of the  business of RoTech or any of the RoTech  Subsidiaries.
RoTech and the RoTech  Subsidiaries own, possess or otherwise have the exclusive
legal right to use the Licenses, free and clear of all liens, pledges, claims or
other encumbrances of any nature whatsoever.  RoTech and the RoTech Subsidiaries
are not in material  default under any such License,  and neither RoTech nor any
RoTech  Subsidiary has received any notice of any material  default or any other
material  claim or proceeding  relating to any such License.  Each License is in
full force and effect, and neither RoTech nor any of the RoTech Subsidiaries has
received written notice of any proceeding to terminate or suspend any License or
of any condition or event which, if uncured,  would result in the termination or
suspension of any License. Any and all past litigation  concerning any Licenses,
and  all  claims  and  causes  of  action  raised  therein,  have  been  finally
adjudicated,  and in the case of such litigation  finally  adjudicated since the
date of the  RoTech  Balance  Sheet,  such  adjudication  has not had a material
adverse  effect  on  RoTech  or any  RoTech  Subsidiary.  Except as set forth on
Exhibit 3.15 to the RoTech  Disclosure  Schedule,  no License has been  revoked,
conditioned  (except  as  may  be  customary)  or  restricted,   and  no  action
(equitable, legal, or administrative),  arbitration or other process is pending,
or to the best knowledge of RoTech, threatened,  which in any way challenges the
validity of, or seeks to revoke, condition, or restrict any License.

       3.16 TITLE, CONDITION OF PERSONAL PROPERTY.

       (A) RoTech and the RoTech Subsidiaries have good and marketable title to,
           or valid and subsisting  leasehold  interests in, all of the personal
           property  located at their  places of business or used in  connection
           with the  operation  of their  businesses,  subject  to no  mortgage,
           security  interest,  pledge,  lien, claim,  encumbrance or charge, or
           restraint  on  transfer  whatsoever  other than  Permitted  Liens (as
           defined  below).  No  other  person  has  any  right  to  the  use or
           possession  of any of such  property  which is owned and,  except for
           those  which  evidence  Permitted  Liens,  RoTech  has not signed any
           financing statement or any security agreement authorizing any secured
           party  thereunder to file any such financing  statement.  All of such
           personal property comprising equipment,  improvements,  furniture and
           other tangible personal  property in use by RoTech,  whether owned or
           leased, is in good operat-


                                      A-10
<PAGE>

           ing  condition  and repair,  subject to normal wear and tear,  and is
           sufficient  to enable  RoTech to  operate  its  business  in a manner
           consistent with its operation during the immediately preceding twelve
           (12) months.

       (B) Except as set  forth on  Exhibit  3.16(b)  to the  RoTech  Disclosure
           Schedule,  no tangible personal property used by RoTech or any of the
           RoTech  Subsidiaries in connection with the operation of its business
           is subject to a lease, conditional sale, security interest or similar
           arrangement  which  requires  annual  payments in excess of $100,000.
           RoTech has  delivered  to IHS a complete  and correct copy of each of
           the leases  and other  agreements  listed on  Exhibit  3.16(b) to the
           RoTech Disclosure Schedule.  All of said personal property leases are
           valid,  binding and enforceable in accordance  with their  respective
           terms and are in full  force  and  effect.  RoTech is not in  default
           (defined as the  occurrence  of an event under the  applicable  lease
           which, when added to defaults under any other such lease, would cause
           RoTech or any RoTech  Subsidiary to suffer  liability in an amount in
           excess of $500,000 on an  aggregate  basis)  under any of such leases
           and there has not been  asserted,  either by or against  RoTech under
           any of such leases, any written notice of default,  set-off, or claim
           of  default.  To the best  knowledge  of RoTech,  the parties to such
           leases  other than  RoTech  are not in  default  of their  respective
           obligations under any of such leases,  and there has not occurred any
           event  which  with the  passage of time or giving of notice (or both)
           would constitute such a default or breach under any of such leases.

       (C) "Permitted Liens" shall mean:

          (I)  carriers', warehouseman's,  mechanics, materialmen's, repairmen's
               or other like liens  arising in the  ordinary  course of business
               which  are (i) not  overdue  for a period of more than 30 days or
               (ii) which are being  contested in good faith and by  appropriate
               proceedings,  provided  that if such contest  shall  continue for
               more than 30 days, the amount thereof shall be bonded or properly
               reserved against at the end of such 30-day period;

          (II) deposits  to secure  the  performance  of bids,  trade  contracts
               (other than for borrowed money),  leases,  statutory obligations,
               surety and appeal bonds,  performance bonds and other obligations
               of like nature incurred in the ordinary course of business;

          (III)pledges or deposits in  connection  with  worker's  compensation,
               unemployment insurance, and other social security legislation;

          (IV) liens securing obligations of less than $100,000 and which in the
               aggregate are not material and which do not materially affect the
               continued used of the property to which such liens attach; and


          (V)  liens  described  on Exhibit  3.16(c)  to the  RoTech  Disclosure
               Schedule.

       3.17 TITLE, CONDITION OF THE ROTECH REAL PROPERTY.

       (A) Exhibit 3.17 to the RoTech  Disclosure  Schedule  identifies all real
           property owned or leased by RoTech or any of the RoTech  Subsidiaries
           (the "RoTech Real Property").  RoTech and the RoTech Subsidiaries, as
           the case may be,  have good and  marketable  title to the RoTech Real
           Property,  free and clear of all liens, claims,  charges,  easements,
           encumbrances,  and title exceptions of any kind whatsoever except for
           Permitted Liens.

       (B) Except as set  forth on  Exhibit  3.17,  there are no leases or other
           agreements granting to any third party the right to use or occupy any
           of the RoTech Real Property and no person has any ownership  interest
           or option or right of first  refusal  (which has not been  waived) to
           acquire any ownership  interest in any of the RoTech Real Property or
           any building or improvements thereon;

       (C) No written notices of violation have been issued by any  governmental
           authority and remain in effect which prohibit the existing use of the
           structures presently comprising the RoTech Real Property;


                                      A-11
<PAGE>

       (D) To the knowledge of RoTech, there is no plan, study, or effort by any
           governmental  authority  or agency  which would in any  material  way
           affect the present  use or zoning of any of the RoTech Real  Property
           or any  part  thereof.  To the  knowledge  of  RoTech,  there  are no
           assessments  or  proposed  assessments  and  there  is  no  existing,
           proposed or contemplated plan to widen, modify, or realign any street
           or highway or any existing,  proposed, or contemplated eminent domain
           proceedings  that would in any  material way affect any of the RoTech
           Real Property;


       (E) The  buildings  and other  improvements  comprising  the RoTech  Real
           Property and all of their systems,  including without limitation, the
           heating, ventilating, and air conditioning systems, and the plumbing,
           electrical,  mechanical,  and drainage systems, and roofs are in good
           operating condition,  repair, and working order, normal wear and tear
           excepted;

       (F) No assessment  for public  improvements  has been made against any of
           the RoTech Real Property that remains unpaid;

       (G) All public  utilities  required  for the  operation  of any parcel of
           RoTech Real  Property  either  enter the property  through  adjoining
           public streets,  or if they pass through adjoining private land do so
           in  accordance  with  valid  easements.  Each  parcel of RoTech  Real
           Property is adjacent to or has access to an abutting street;

       (H) There are no easements  traversing or contiguous to any of the RoTech
           Real Property  which  interfere in any material  respect with the use
           and operation of the RoTech Real Property; and

       (I) Neither  RoTech nor any of the RoTech  Subsidiaries  has received any
           written  notice  of  material  noncompliance  from  any  governmental
           authority regarding any of the improvements constructed at the RoTech
           Real Property or the use or occupancy thereof which remains uncured.

       3.18 LEGAL  PROCEEDINGS.  Other than as set forth on Exhibit  3.18 to the
RoTech Disclosure Schedule,  there are no claims,  actions, suits or proceedings
or  arbitrations,  either  administrative  or  judicial,  pending,  or,  to  the
knowledge of RoTech,  overtly  threatened  against or affecting RoTech or any of
the RoTech  Subsidiaries,  or RoTech's  ability to consummate  the  transactions
contemplated herein, at law or in equity or otherwise, before or by any court or
governmental agency or body, domestic or foreign, or before an arbitrator of any
kind.

       3.19  INSURANCE  AND  SURETY  AGREEMENTS.  Exhibit  3.19  to  the  RoTech
Disclosure  Schedule  contains  a true and  correct  list of:  (a) all  material
policies of fire, liability and other forms of insurance held or owned by RoTech
(including  but not  limited to  medical  malpractice  insurance,  and any state
sponsored  plan or program  for  worker's  compensation);  and (b) all  material
bonds,  indemnity agreements and other agreements of suretyship made for or held
by  RoTech,  including  a brief  description  of the  character  of the  bond or
agreement and the name of the surety or  indemnifying  party.  Exhibit 3.19 sets
forth for each such  insurance  policy  the name of the  insurer,  the amount of
coverage,  the type of insurance,  the policy  number,  the annual premium and a
brief description of the nature of insurance included under each such policy and
of any claims made thereunder during the past two years. Such policies are owned
by and payable  solely to RoTech or a RoTech  Subsidiary,  and said  policies or
renewals or  replacements  thereof will be outstanding  and duly in force at the
Closing Date.  All insurance  policies  listed on Exhibit 3.19 are in full force
and effect,  all premiums due on or before the Closing Date have been or will be
paid,  financed  or accrued on or before the Closing  Date,  RoTech has not been
advised by any of its insurance  carriers of an intention to terminate or modify
any such  policies  other than under  circumstances  where RoTech has received a
commitment for a replacement policy, nor has RoTech failed to comply with any of
the material conditions contained in any such policies.

       3.20  COMPLIANCE WITH LAWS IN GENERAL.  RoTech is in material  compliance
with all Governmental  Requirements  (as defined herein).  Except for notices of
non-compliance  as to which RoTech has taken corrective action acceptable to the
applicable  governmental  agency, and as set forth in Exhibit 3.20 to the RoTech
Disclosure  Schedule,  neither  RoTech nor any of the RoTech  Subsidiaries  has,
within  the  period  of  twelve  months  preceding  the date of this  Agreement,
received any written notice that


                                      A-12
<PAGE>

RoTech  or such  subsidiary  fails to comply in any  material  respect  with any
applicable  Federal,  state, local or other governmental laws or ordinances,  or
any applicable order, rule or regulation of any Federal,  state,  local or other
governmental  agency having  jurisdiction  over their businesses  ("Governmental
Requirements").  RoTech shall report to IHS, within ten (10) business days after
receipt thereof, any written notices that RoTech or any RoTech Subsidiary is not
in compliance in any material respect with any of the foregoing.

       3.21  COMMISSIONS AND FEES.  Except for fees payable to Smith Barney Inc.
("Smith Barney") pursuant to the engagement letter dated January 30, 1997, there
are no valid  claims for  brokerage  commissions  or finder's or similar fees in
connection with the  transactions  contemplated by this Plan of Merger which may
be now or  hereafter  asserted  against  IHS,  RoTech or any  RoTech  Subsidiary
resulting from any action taken by RoTech or its officers, directors, or agents,
or any of them.

       3.22 OPINION OF FINANCIAL  ADVISOR.  The Board of Directors of RoTech has
received an opinion of Smith  Barney  dated the date of this  Agreement,  to the
effect that, as of such date, the Exchange Ratio is fair, from a financial point
of view, to the holders of RoTech Common Stock (the "Smith Barney Opinion").

       3.23 VOTE REQUIRED.  The affirmative vote of the holders of a majority of
the  outstanding  RoTech Shares entitled to vote thereon is the only vote of the
holders  of any  class or series of  RoTech  capital  stock or other  securities
(including debt securities) necessary to approve this Plan of Merger, the Merger
and the transactions contemplated hereby.

       3.24  INVENTORY.  RoTech has recorded its inventory on the RoTech Balance
Sheet in accordance with generally accepted accounting principles,  consistently
applied,  subject to normal year-end audit adjustments.  The inventory reflected
in the RoTech  Balance  Sheet and not disposed of since such date is of good and
merchantable  quality, of a quantity and quality saleable in the ordinary course
of  business  of RoTech  and the RoTech  Subsidiaries  in  accordance  with past
practices,  and is adequate as of the date hereof for the business of RoTech and
the RoTech Subsidiaries as conducted as of such date.

       3.25 EQUIPMENT.  Equipment used by RoTech and the RoTech  Subsidiaries in
the conduct of their  business  is, as of the date  hereof,  taken as a whole in
good operating  condition  (reasonable wear and tear excepted) and is sufficient
to carry on the business of RoTech and the RoTech  Subsidiaries  in the ordinary
course as it is presently conducted.

       3.26 TAX RETURNS.

       (A) Except  as  set  forth  on  Exhibit  3.26  to the  RoTech  Disclosure
           Schedule, (i) all Tax (as defined below) returns, statements, reports
           and forms or  extensions  with respect  thereto  required to be filed
           with any Federal,  state, local or other  governmental  department or
           court or other authority having  jurisdiction  over it ("Governmental
           Authority")  on or before the Closing  Date by or on behalf of RoTech
           or any RoTech Subsidiary (collectively, the "Tax Returns"), have been
           or will be timely filed on or before the Closing  Date in  accordance
           in  all   material   respects   with  all   applicable   Governmental
           Requirements; and (ii) RoTech and the RoTech Subsidiaries have timely
           paid all Taxes payable by them,  except for Tax obligations  which in
           any one  instance  do not  exceed  $50,000  and  which do not  exceed
           $250,000 in the aggregate.

       (B) For  purposes of this  Agreement,  "Tax" means any net income,  gross
           income, sales, use, franchise, personal, or real property tax.

       3.27  ENCUMBRANCES  CREATED BY THIS AGREEMENT.  Execution and delivery of
this  Agreement,  or any of RoTech's  Transaction  Documents,  does not, and the
consummation of the transactions contemplated hereby or thereby will not, create
any liens or other  encumbrances  on any  assets of RoTech or any of the  RoTech
Subsidiaries in favor of third parties.

       3.28 NO UNTRUE STATEMENT. None of the representations and warranties made
pursuant to this  Agreement  contains any untrue  statement of material  fact or
omits to state a material fact  necessary,  in light of the  circumstance  under
which it was made, in order to make any such  representation  not  misleading in
any material respect.


                                      A-13
<PAGE>

       3.29 LEASEHOLD INTERESTS.  Exhibit 3.29 to the RoTech Disclosure Schedule
sets forth a complete and correct list of all leases pursuant to which RoTech or
any of the RoTech  Subsidiaries  leases  real  property.  Except as set forth on
Schedule 3.29, the change of control of RoTech or any of the RoTech Subsidiaries
as a result of the Merger will not be deemed an assignment or other  transfer of
the tenant's  interest  under any such lease which would require  consent of the
landlord  thereunder.  Each of  RoTech  and the  RoTech  Subsidiaries  has valid
leasehold  interests  in all such real  property  free and  clear of all  liens,
claims,  charges and encumbrances of any kind  whatsoever,  except for Permitted
Liens.  RoTech has provided to IHS access to complete and correct  copies of the
leases identified in Exhibit 3.29.

       3.30  BINDING  EFFECT.  This  Agreement  and  all  Transaction  Documents
executed by RoTech constitute the legal,  valid and binding  obligations of such
party,  enforceable  against RoTech in accordance with their  respective  terms,
subject  to  applicable  bankruptcy  and  insolvency  laws  and  laws  affecting
creditors' rights and the enforcement thereof generally.

       3.31 QUESTIONABLE  PAYMENTS.  RoTech and the RoTech Subsidiaries have not
made, and no employee,  agent,  or other  representative  of any of them, and no
affiliate  of  RoTech,  (a) has used any  corporate  funds of RoTech to make any
illegal or unlawful payment to any officer, employee,  representative,  agent of
any  government,  or to any  political  party or  official  thereof,  including,
without limitation, any of same that would violate the Foreign Corrupt Practices
Act of 1977, as amended; or (b) has made or received any illegal payment, bribe,
kickback,  political  contribution or other similar questionable payment for any
referrals or  recommendations  or otherwise in connection  with the operation of
RoTech's business, and no director, officer, or controlling person of RoTech has
done any of the  foregoing,  whether or not in connection  with the operation of
RoTech's business.

       3.32 COMPLIANCE WITH HEALTHCARE LAWS. Except as set forth on Exhibit 3.32
to the RoTech Disclosure  Schedule,  RoTech, the RoTech Subsidiaries and each of
their licensed  employees is in compliance with all applicable  statutes,  laws,
ordinances,  rules,  orders, and regulations of any governmental  authority with
respect  to  regulatory   matters  primarily   relating  to  patient  healthcare
(including  without  limitation  Section 1128B(b) of the Social Security Act, as
amended,  42 U.S.C.  Section WP-7(b) (Criminal  Penalties  Involving Medicare or
State Health Care Programs)  commonly referred to as the "Federal  Anti-Kickback
Statute"  and The Social  Security  Act, as  amended,  Section  1877,  42 U.S.C.
Section WP (Prohibition  Against  Certain  Referrals),  commonly  referred to as
"Stark  Statute")  (collectively,  "Healthcare  Laws").  RoTech  and the  RoTech
Subsidiaries  have maintained all records  required to be maintained by the Food
and Drug  Administration,  Drug Enforcement  Agency and State Boards of Pharmacy
and the  Medicare  and Medicaid  programs as required by  applicable  Healthcare
Laws,  and,  to  the  knowledge  of  RoTech,  there  are no  presently  existing
circumstances  which  would  result or likely  would  result  in  violations  of
Healthcare  laws which could  reasonably be expected to have a material  adverse
effect on RoTech and the RoTech  Subsidiaries taken as a whole.  Exhibit 3.32 to
the  RoTech  Disclosure  Schedule  includes  a copy  of the IHS  healthcare  law
questionnaire which has been accurately completed by RoTech and does not contain
any material misstatement of any fact and does not omit any fact that would have
to be  stated  in  order  not to  render  any  response  to  such  questionnaire
materially misleading.

       3.33  ENVIRONMENTAL  MATTERS.  RoTech and the RoTech  Subsidiaries are in
compliance in all material  respects with all  environmental  laws applicable to
them and their business and assets, including,  without limitation, the Resource
Conversation and Recovery Act of 1976, the Comprehensive  Environmental Response
Compensation and Liability Act of 1980, the Federal Water Pollution  Control Act
(as amended by the Clean Water Act),  the Federal Toxic  Substances  Act and the
Clean Air Act, each as amended to date.


                                      A-14
<PAGE>

           ARTICLE IV: REPRESENTATIONS AND WARRANTIES OF MERGER SUB

       Merger Sub and IHS,  jointly and severally,  hereby represent and warrant
to RoTech as follows:

       4.1  ORGANIZATION,   EXISTENCE,  AND  CAPITAL  STOCK.  Merger  Sub  is  a
corporation  duly  organized and validly  existing and is in good standing under
the laws of the State of Florida.  Merger Sub's  authorized  capital consists of
1,000 shares of Common Stock,  par value $.01 per share, all of which shares are
issued and registered in the name of IHS.

       4.2 POWER AND AUTHORITY.  Merger Sub has the corporate  power to execute,
deliver,  and perform this Plan of Merger and all agreements and other documents
executed and delivered,  or to be executed and delivered, by it pursuant to this
Plan of Merger, and, subject to the satisfaction of the conditions precedent set
forth  herein,  has  taken all  actions  required  by law,  its  Certificate  of
Incorporation, its By-laws or otherwise, to authorize the execution and delivery
of this Plan of Merger and such  related  documents.  Execution  and delivery of
this Plan of Merger does not and, subject to the receipt of required  regulatory
approvals  and  any  other  required  third-party  consents  or  approvals,  the
consummation of the merger  contemplated hereby will not, violate any provisions
of the Certificate of  Incorporation or By-laws of Merger Sub, or any agreement,
instrument, order, judgment or decree to which Merger Sub is a party or by which
it is  bound,  violate  any  restrictions  of any  kind to which  Merger  Sub is
subject,  or result in the creation of any lien,  charge or encumbrance upon any
of the property or assets of Merger Sub.

       4.3 COMMISSIONS AND FEES. There are no claims for brokerage  commissions,
investment  bankers' fees or finder's fees in  connection  with the  transaction
contemplated  by this Plan of Merger  resulting  from any action taken by Merger
Sub or any of its officers, Directors, or agents.

       4.4  NO  SUBSIDIARIES.  Merger  Sub  does  not own stock in, and does not
control  directly  or indirectly, any other corporation, association or business
organization. Merger Sub is not a party to any joint venture or partnership.

       4.5  LEGAL  PROCEEDINGS.  There  are  no  actions,  suits, or proceedings
pending  or  threatened  against Merger Sub, at law or in equity, relating to or
affecting Merger Sub, including the Merger.

       4.6 NO CONTRACTS OR LIABILITIES. Other than the obligations created under
this Plan of Merger, Merger Sub has no obligations or liabilities (contingent or
otherwise) under any contracts, claims, leases, loans, or otherwise.


               ARTICLE V: REPRESENTATIONS AND WARRANTIES OF IHS

       IHS REPRESENTS AND WARRANTS TO ROTECH AS FOLLOWS:


       5.1  ORGANIZATION  AND  STANDING  OF  IHS.  IHS  is  a  corporation  duly
organized,  validly existing and in good standing under the laws of the State of
Delaware.  Copies  of IHS's  Articles  of  Incorporation  and  By-Laws,  and all
amendments  thereof to date,  have been delivered to RoTech and are complete and
correct.  IHS has the power and  authority  to own the  property  and assets now
owned by it and to conduct the business presently being conducted by it.

       5.2  IHS  CAPITAL  STOCK.   IHS's  authorized  capital  consists  of  (i)
150,000,000  shares  of  Common  Stock,  par value  $.001  per  share,  of which
24,665,489  shares are issued and  outstanding as of March 31, 1997, and none of
which  shares are held in  treasury,  and (ii)  15,000,000  shares of  Preferred
Stock, par value $.01 per share,  none of which are issued and outstanding.  All
of the issued and outstanding IHS Shares are duly and validly issued, fully paid
and nonassessable. Except as set forth on Exhibit 5.2 to the Disclosure Schedule
delivered  to RoTech by IHS at the time of the  execution  and  delivery of this
Plan of Merger (the "IHS Disclosure  Schedule"),  as of May 31, 1997, there were
no options,  warrants,  or similar rights granted by IHS or any other agreements
to  which  IHS is a  party  providing  for  the  issuance  or  sale by it of any
additional  securities.   There  is  no  liability  for  dividends  declared  or
accumulated  but unpaid with  respect to any IHS Shares.  Except as set forth on
Exhibit 5.2 to the IHS Disclosure Sched-


                                      A-15
<PAGE>

ule,  since the date of the "IHS  Balance  Sheet" (as  defined  in Section  5.9,
below),  except  pursuant  to  options,  warrants,  conversion  rights  or other
contractual  rights  existing on such date, IHS has not issued any shares of its
capital stock,  effected any stock split or otherwise changed its capitalization
as it existed on such date.

       5.3  SUBSIDIARIES.  Each  operating  subsidiary  of  IHS  (each  an  "IHS
Subsidiary"  and  collectively,   the  "IHS  Subsidiaries")  is  a  corporation,
partnership,  limited  partnership or limited  liability company duly organized,
validly  existing and in good  standing  under the laws of its  jurisdiction  of
incorporation.  Each IHS  Subsidiary has all necessary  corporate,  partnership,
limited  partnership or limited liability company,  as the case may be, power to
own its  properties  and  assets  and to  carry  on its  business  as  presently
conducted.  There are no  outstanding  options,  warrants,  or other  agreements
pursuant  to which any  person or entity has a right to acquire or be issued any
material  portion of the  capital  stock or other  material  interest in any IHS
Subsidiary  the  revenues  or assets of which are  material  to the  revenues or
assets of IHS and the IHS Subsidiaries taken as a whole.

       5.4  FOREIGN  QUALIFICATIONS.  Each of IHS and  the IHS  Subsidiaries  is
qualified  to do business as a foreign  corporation  and is in good  standing in
each jurisdiction where the nature or character of the property owned, leased or
operated  by it or the  nature  of the  business  transacted  by it  makes  such
qualification necessary.

       5.5 POWER AND AUTHORITY.  Subject to the  satisfaction  of the conditions
precedent set forth herein, IHS has the corporate power to execute,  deliver and
perform this Plan of Merger and all agreements and other documents  executed and
delivered or to be executed and delivered by it pursuant to this Plan of Merger,
and subject to the satisfaction of the conditions precedent set forth herein has
taken all  action  required  by its  Certificate  of  Incorporation,  by-laws or
otherwise, to authorize the execution,  delivery and performance of this Plan of
Merger and such related documents. Except as set forth on Exhibit 5.5 to the IHS
Disclosure Schedule,  the execution and delivery of this Plan of Merger does not
and, subject to the receipt of required stockholder approval the consummation of
the Merger and the consummation of the transaction contemplated hereby will not,
violate any provisions of the Certificate of  Incorporation or By-laws of IHS or
any provisions of, or result in the  acceleration of any obligation  under,  any
mortgage,  lien,  lease,  agreement,   instrument,   order,  arbitration  award,
judgment,  or decree, to which IHS or any IHS Subsidiary is a party, or by which
any of them is bound,  or violate any  restrictions  of any kind to which any of
them are  subject.  Execution  and  delivery  of this  Plan of  Merger  has been
approved by the Board of Directors of IHS.

       5.6  CONSENTS.  Except as set forth on Exhibit 5.6 to the IHS  Disclosure
Schedule, no authorization,  consent, approval, license, exemption by, filing or
registration  with any  court or  governmental  department,  commission,  board,
bureau, agency or instrumentality,  domestic or foreign, is or will be necessary
in connection with the execution,  delivery and performance of this Agreement or
any of the Transaction  Documents by IHS, other than as may be required by or on
behalf of RoTech or any  RoTech  Subsidiary  by reason of the  change of control
resulting from the Merger.

       5.7 REPORTS AND FINANCIAL STATEMENTS.

       (A) IHS has  timely  filed  all  reports  required  to be filed  with the
           Securities  and Exchange  Commission  (the "SEC")  pursuant to and in
           accordance  with the  Securities  Exchange  Act of 1934,  as  amended
           (together with the rules and regulations promulgated thereunder,  the
           "Exchange Act") and the applicable  rules of the NYSE,  since January
           1, 1995 (collectively, as heretofore amended, the "IHS SEC Reports"),
           and has  previously  furnished to RoTech true and complete  copies of
           all  such  IHS  SEC  Reports.  None  of  such  reports,  as of  their
           respective  dates,  contained any untrue statement of a material fact
           or omitted to state a material fact required to be stated  therein or
           necessary  to  make  the   statements   therein,   in  light  of  the
           circumstances  in which they were made, not  misleading.  Each of the
           balance sheets  (including the related notes) included in the IHS SEC
           Reports fairly presents the  consolidated  financial  position of IHS
           and the IHS Subsidiaries as of the respective dates thereof,  and the
           other  related  consolidated   financial  statements  (including  the
           related notes)


                                      A-16
<PAGE>

           included  therein  fairly  present the results of operations and cash
           flows of IHS and the IHS Subsidiaries  for the respective  periods or
           as of the respective dates set forth therein,  all in conformity with
           GAAP except as otherwise noted therein.

       (B) Each of the balance sheets  included in the "IHS Quarterly  Financial
           Statements"  (as  defined in Section  7.9)  fairly  presents  or will
           present,  as the case may be, the consolidated  financial position of
           IHS and the IHS Subsidiaries as of the respective dates thereof,  and
           the other related consolidated  financial statements included therein
           fairly present or will present,  as the case may be, the consolidated
           results of operations and cash flows of IHS and the IHS Subsidiaries,
           taken as a whole,  for the  periods  reflected  therein.  The balance
           sheets  and  statements  of  income  included  in the  IHS  Quarterly
           Financial  Statements  have been  prepared  in  accordance  with GAAP
           except for the notes thereto (if any).

       (C) There are no material  liabilities of IHS and the IHS Subsidiaries on
           a consolidated  basis which are not reserved  against or disclosed in
           the balance sheet dated as of March 31, 1997, included in the IHS SEC
           Reports (the "IHS Balance Sheet"),  as of the date thereof whether or
           not they are required to be so reserved or disclosed under GAAP.

       (D) The consolidated financial statements included in the IHS SEC Reports
           do not reflect any material non-recurring or extraordinary income not
           identified therein.

       5.8 MEDICARE AND MEDICAID PROGRAMS. IHS and the IHS Subsidiaries,  to the
extent  necessary to conduct  their  business in a manner  consistent  with past
practice, are qualified for participation in Medicare and Medicaid programs. IHS
and the IHS  Subsidiaries  have no liability with respect to recoupment from the
Medicare or Medicaid programs or any other third party reimbursement source that
would materially exceed the reserves or allowances made therefor as set forth on
the  financial  Statements  included  in the IHS Balance  Sheet,  and IHS has no
knowledge for the assertion of any such  recoupment  claim that arose out of any
transactions  completed  prior to the date hereof,  and no material  Medicare or
Medicaid investigation, survey, or audit is pending or, to the knowledge of IHS,
threatened  with  respect to the  operation of the business of IHS or any of the
IHS Subsidiaries, except to the extent that such investigation, survey, or audit
is routine and is not reasonably likely to have a material adverse effect on IHS
and the IHS Subsidiaries. None of IHS, the IHS Subsidiaries or, to the knowledge
of IHS, their  licensed  employees has been convicted of, or pled guilty or nolo
contendere to any criminal  offense related to any Medicare or Medicaid  program
while  such  person was an  employee  of IHS or an IHS  Subsidiary  or after the
termination  of such  person's  employment  by IHS or such  subsidiary  for acts
committed while employed by IHS or an IHS  Subsidiary,  and, to the knowledge of
IHS,  none of such  employees  has  committed any offense which may serve as the
basis for suspension or exclusion of IHS or any IHS Subsidiary from the Medicare
and Medicaid programs. Since January 1, 1996, neither IHS nor any IHS Subsidiary
has  received  any notice from the  Medicare  or Medicaid  programs or any other
third  party  reimbursement  source  to the  effect  that the  basis on which it
receives reimbursement for its services is to be changed.

       5.9  CONTRACTS,  ETC. All material  contracts,  leases,  agreements,  and
arrangements  to which IHS or any IHS  Subsidiary is a party are legally  valid,
binding,  and  enforceable in accordance  with their terms and in full force and
effect,  and IHS has provided RoTech with the opportunity to review and copy all
such documents.  IHS and the IHS Subsidiaries  and, to the knowledge of IHS, all
other  parties to such  contracts,  leases,  agreements  and  arrangements  have
complied in all material respects with the provisions of such contracts, leases,
agreements,  and arrangements,  and IHS and the IHS Subsidiaries are not and, to
the knowledge of IHS, no other party is, in default thereunder, and no event has
occurred  which,  but for the  passage  of time or the giving of notice or both,
would constitute a default thereunder, except, in each case, when the invalidity
of the lease,  contract,  agreement,  or  arrangement,  or the default or breach
thereunder, would not, individually or in the aggregate, have a material adverse
effect on IHS and the IHS Subsidiaries, taken as a whole.

       5.10  SUBSEQUENT  EVENTS.  Except as set forth on Exhibit 5.10 to the IHS
Disclosure  Schedule  or  as  contemplated  by this Plan of Merger, IHS has not,
since the date of the IHS Balance Sheet:


                                      A-17
<PAGE>

       (A) Incurred any material adverse change;

       (B) Through the date of this Plan of Merger,  and except for this Plan of
           Merger and any other  agreement  delivered  pursuant  to this Plan of
           Merger,  entered  into any  material  transaction  other  than in the
           ordinary course of business;

       (C) Through  the date of this  Plan of  Merger,  issued  in any  material
           amount any stock, bonds, or other securities or any options or rights
           to  purchase  any of its  securities  other than in  connection  with
           existing agreements;

       (D) Suffered any material casualty or loss not covered by insurance;

       (E) Made any material change in applicable accounting principles;

       (F) Closed any location  from which it operated any material  part of its
           business; or

       (G) Entered into any agreement or commitment to do any of the foregoing.

       5.11 LEGAL  PROCEEDINGS.  Other than as set forth on Exhibit  5.11 to the
IHS Disclosure Schedule,  there are no claims,  actions, suits or proceedings or
arbitrations,  either administrative or judicial,  pending, or, to the knowledge
of  IHS,  overtly  threatened  against  or  affecting  IHS or  any  of  the  IHS
Subsidiaries,  or IHS's  ability to  consummate  the  transactions  contemplated
herein, at law or in equity or otherwise, before or by any court or governmental
agency or body, domestic or foreign, or before an arbitrator of any kind.

       5.12 COMPLIANCE WITH LAWS IN GENERAL.  IHS is in material compliance with
all  Governmental  Requirements  (as  defined  herein).  Except  for  notices of
non-compliance  as to which IHS has taken  corrective  action  acceptable to the
applicable governmental agency, neither IHS nor any of the IHS Subsidiaries has,
within  the  period  of  twelve  months  preceding  the date of this  Agreement,
received any written notice that IHS or such  subsidiary  fails to comply in any
material respect with any applicable Federal, state, local or other governmental
laws or ordinances,  or any applicable order, rule or regulation of any Federal,
state,  local  or other  governmental  agency  having  jurisdiction  over  their
businesses  ("Governmental  Requirements").  IHS shall report to RoTech,  within
five (5) business days after receipt  thereof,  any written  notices that IHS or
any IHS Subsidiary is not in compliance in any material  respect with any of the
foregoing.

       5.13 COMMISSIONS AND FEES.  Except for fees payable to Donaldson Lufkin &
Jenrette Securities  Corporation pursuant to the engagement letter dated July 2,
1997, there are no valid claims for brokerage commissions or finder's or similar
fees in connection  with the  transactions  contemplated  by this Plan of Merger
which  may  be now or  hereafter  asserted  against  IHS or any  IHS  Subsidiary
resulting from any action taken by IHS or its officers, directors, or agents, or
any of them.

       5.14  FAIRNESS  OPINION.  The Board of Directors of IHS has received from
Donaldson Lufkin & Jenrette Securities Corporation an opinion (the "IHS Fairness
Opinion")  dated of even date  herewith  that the Exchange  Ratio is fair to the
stockholders of IHS from a financial point of view.

       5.15 VOTE REQUIRED.  The affirmative vote of the holders of a majority of
the  outstanding  IHS Shares  entitled  to vote  thereon is the only vote of the
holders of any class or series of IHS capital  stock  necessary  to approve this
Plan of Merger, the Merger and the transactions contemplated hereby.

       5.16 NO UNTRUE STATEMENT. None of the representations and warranties made
pursuant to this  Agreement  contains any untrue  statement of material  fact or
omits to state a material fact  necessary,  in light of the  circumstance  under
which it was made, in order to make any such  representation  not  misleading in
any material respect.

       5.17  BINDING  EFFECT.  This  Agreement  and  all  Transaction  Documents
executed by IHS  constitute  the legal,  valid and binding  obligations  of such
party, enforceable against IHS in accordance with their respective terms.


                                      A-18
<PAGE>

       5.18 QUESTIONABLE  PAYMENTS.  IHS and the IHS Subsidiaries have not made,
and no employee, agent, or other representative of any of them, and no affiliate
of IHS, (a) has used any corporate  funds of IHS to make any illegal or unlawful
payment to any officer, employee, representative, agent of any government, or to
any political party or official thereof,  including,  without limitation, any of
same that would violate the Foreign  Corrupt  Practices Act of 1977, as amended;
or (b) has made or received  any illegal  payment,  bribe,  kickback,  political
contribution  or  other  similar  questionable  payment  for  any  referrals  or
recommendations or otherwise in connection with the operation of IHS's business,
and no  director,  officer,  or  controlling  person  of IHS has done any of the
foregoing, whether or not in connection with the operation of IHS's business.

       5.19 COMPLIANCE WITH HEALTHCARE LAWS. IHS, the IHS Subsidiaries, and each
of their licensed employees is in compliance with all applicable statutes, laws,
ordinances,  rules,  orders, and regulations of any governmental  authority with
respect  to  regulatory   matters  primarily   relating  to  patient  healthcare
(including  without  limitation  Section 1128B(b) of the Social Security Act, as
amended,  42 U.S.C.  Section WP-7(b) (Criminal  Penalties  Involving Medicare or
State Health Care Programs)  commonly referred to as the "Federal  Anti-Kickback
Statute"  and The Social  Security  Act, as  amended,  Section  1877,  42 U.S.C.
Section WP (Prohibition  Against  Certain  Referrals),  commonly  referred to as
"Stark Statute") (collectively, "Healthcare Laws"). IHS and the IHS Subsidiaries
have  maintained  all  records  required to be  maintained  by the Food and Drug
Administration,  Drug  Enforcement  Agency and State  Boards of Pharmacy and the
Medicare and Medicaid  programs as required by applicable  Healthcare Laws, and,
to the knowledge of IHS,  there are no presently  existing  circumstances  which
would result or likely would result in violations of Healthcare laws which could
reasonably  be  expected  to have a material  adverse  effect on IHS and the IHS
Subsidiaries.  Exhibit 5.19 to the IHS Disclosure  Schedule sets forth a copy of
the RoTech healthcare law questionnaire  which has been accurately  completed by
IHS and does not contain any material misstatement of any fact and does not omit
any fact that  would have to be stated in order not to render  any  response  to
such questionnaire materially misleading.

       5.20 INSURANCE COVERAGE.  All insurance policies of IHS are in full force
and effect, contain coverage in amounts and against such losses and risks as are
generally maintained by comparable businesses, all premiums due on or before the
Closing  Date have been or will be paid,  financed  or  accrued on or before the
Closing Date,  IHS has not been advised by any of its  insurance  carriers of an
intention  to  terminate   or  modify  any  such   policies   other  than  under
circumstances  where IHS has received a commitment for a replacement policy, nor
has IHS failed to comply with any of the  material  conditions  contained in any
such policies.

       5.21 MERGER SUB COMMON STOCK. IHS owns,  beneficially and of record,  all
of the issued and outstanding  shares of Common Stock, par value $.01 per share,
of Merger Sub (the  "Merger  Sub Common  Stock")  which are  validly  issued and
outstanding,  fully  paid and  nonassessable,  free and  clear of all  liens and
encumbrances. IHS has the corporate power to endorse and surrender such hares of
Merger Sub Common Stock for conversion pursuant to this Plan of Merger. IHS has,
or will by the Effective Time have, taken all such actions as may be required in
its capacity as the sole stockholder of Merger Sub to approve the Merger.

       5.22  REGULATORY  APPROVALS.  IHS  and  each  IHS  Subsidiary  holds  all
licenses, permits, certificates of need, and other regulatory approvals required
or  necessary to be applied for or obtained in  connection  with its business as
presently conducted or as proposed to be conducted. All such licenses,  permits,
certificates of need, and other regulatory  approvals  relating to the business,
operations, and facilities of IHS and the IHS Subsidiaries are in full force and
effect.  Except  as may be  disclosed  on  Schedule  5.11 to the IHS  Disclosure
Schedule,  any  and all  past  litigation  concerning  such  licenses,  permits,
certificates  of need,  and regulatory  approvals,  and all claims and causes of
action raised therein have been finally  adjudicated.  No such license,  permit,
certificate  of need,  or  regulatory  approval  has been  revoked,  conditioned
(except  as  may be  customary)  or  restricted  in any  manner,  and no  action
(equitable, legal, or administrative),  arbitration or other process is pending,
or to the best  knowledge of IHS,  threatened,  which in any way  challenges the
validity  of, or seeks to  revoke,  condition,  or  restrict  any such  license,
permit,  certificate of need, or regulatory approval. Subject to compliance with
applicable securities laws and the Hart-Scott-Rodino  Antitrust Improvements Act
of 1976 (the "HSR  Act"),  the  consummation  of the Merger will not violate any
legal restriction to which IHS or an IHS Subsidiary is subject.


                                      A-19
<PAGE>

       5.23 ACCOUNTS  RECEIVABLE.  Since the date of the IHS Balance Sheet,  IHS
has not changed any  principle or practice  with respect to the  recordation  of
accounts  receivable,   calculation  of  reserves  therefor,   or  any  material
collection,  discount or write-off  policy or procedure.  IHS is in  substantial
compliance with the terms and conditions of all third-party  payer  arrangements
relating to its accounts receivable.

       5.24 RETIREMENT OR  RE-ACQUISITION  OF IHS COMMON STOCK.  None of IHS and
the IHS  Subsidiaries  has agreed directly or indirectly to retire or re-acquire
all or part of the shares of IHS Common  Stock  issued  pursuant  to Section 2.1
hereof.

       5.25  TRADEMARKS.  There are no claims or proceedings  pending or, to the
knowledge of IHS, overtly  threatened against IHS or any of the IHS Subsidiaries
asserting that the use of any of the trademarks,  service marks, or applications
for any of the same,  copyrights,  and other items of intellectual property that
are owned,  possessed  or used by and which are  material to IHS  infringes  the
rights of any other person,  and, to the knowledge of IHS, IHS is not infringing
in any material respect on the intellectual property rights of any other person.

       5.26 EMPLOYEE BENEFIT PLANS; EMPLOYMENT MATTERS.

       (A) Any (i) bonus or other type of incentive  compensation plan, program,
           or arrangement (whether or not set forth in a written document), (ii)
           pension,  profit-sharing,  retirement,  or other  plan,  program,  or
           arrangement,  and (iii)  stock  ownership,  stock  purchase,  phantom
           stock, retirement,  vacation,  severance,  disability, death benefit,
           hospitalization,  or  any  other  employee  benefit  plan,  fund,  or
           program,  including,  but not limited to, those  described in Section
           3(3) of  ERISA,  established  or  maintained  by IHS or which  IHS is
           obligated to make contributions to or under or otherwise  participate
           in (individually, a "IHS Plan" and collectively, the "IHS Plans") has
           been operated and administered in all material respects in accordance
           with, as applicable,  ERISA, the Age Discrimination in Employment Act
           of 1967, as amended, and the related rules and regulations adopted by
           those federal  agencies  responsible for the  administration  of such
           laws.  No act or  failure  to act by IHS or any  IHS  Subsidiary  has
           resulted  in a  "prohibited  transaction"  (as defined in ERISA) with
           respect  to the IHS  Plans  that is not  subject  to a  statutory  or
           regulatory exception. No "reportable event" (as defined in ERISA, but
           excluding  any  event for  which  notice  is  waived  under the ERISA
           regulations)  has occurred with respect to any of the IHS Plans which
           is  subject  to Title IV of  ERISA.  No IHS Plan has any  accumulated
           funding  deficiency  or  liability  to the Pension  Benefit  Guaranty
           Corporation.  Neither  IHS  nor  any  of  the  IHS  Subsidiaries  has
           previously made, is currently  making,  or is obligated in any way to
           make, any contributions to any multi-employer plan within the meaning
           of the Multi-Employer Pension Plan Amendments Act of 1980.

       (B) During the two years prior to the Closing Date,  except to the extent
           that any of the foregoing would not have a material adverse effect on
           IHS and the IHS  Subsidiaries  taken  as a whole,  there  has been no
           material  adverse  change  in the  relationship  between  IHS and its
           employees  nor any  strike  or  material  labor  disturbance  by such
           employees  affecting  IHS's  business  and, to the  knowledge of IHS,
           there  is  no  indication  that  such  a  change,  strike,  or  labor
           disturbance is likely.

       5.27  ENVIRONMENTAL   MATTERS.  IHS  and  the  IHS  Subsidiaries  are  in
compliance with all environmental laws applicable to them and their business and
assets,  including,  without limitation,  the Resource Conversation and Recovery
Act of 1976, the Comprehensive Environmental Response Compensation and Liability
Act of 1980,  the Federal Water  Pollution  Control Act (as amended by the Clean
Water Act),  the Federal  Toxic  Substances  Act and the Clean Air Act,  each as
amended to date,  except  where the failure to be in  compliance  with such laws
would not have a material adverse effect on IHS and the IHS  Subsidiaries  taken
as a whole.

       5.28 IHS COMMON STOCK.  On the Closing  Date,  IHS will have a sufficient
number of authorized  but unissued  andor  treasury  shares of its Common Stock
available for issuance to the holders of RoTech  Shares in  accordance  with the
provisions of this Plan of Merger. The IHS Common Stock to be issued


                                      A-20
<PAGE>

pursuant to this Plan of Merger will, when so delivered, be (i) duly and validly
issued,  fully paid and  nonassessable,  (ii) issued  pursuant  to an  effective
registration  statement under the Securities Act of 1933, as amended,  and (iii)
listed on the NYSE, upon official notice of issuance.



                ARTICLE VI: INFORMATION AND RECORDS CONCERNING
                          ROTECH AND ITS SUBSIDIARIES

       6.1 ACCESS TO ROTECH INFORMATION AND RECORDS BEFORE CLOSING. Prior to the
Closing Date, IHS may make, or cause to be made, such  investigation of RoTech's
(it being understood that, for the purpose of this Article VI, "RoTech" shall be
deemed to refer  collectively  to RoTech and the RoTech  Subsidiaries  listed on
Schedule 3.3) financial and legal  condition as IHS deems necessary or advisable
to  familiarize  itself with RoTech  and/or  matters  relating to its history or
operation. RoTech shall permit IHS and its authorized representatives (including
legal  counsel  and  accountants),  to have full  access to  RoTech's  books and
records upon reasonable notice and during normal business hours, and RoTech will
furnish, or cause to be furnished,  to IHS such financial and operating data and
other  information  and copies of documents  with respect to RoTech's  products,
services,  operations  and  assets  as IHS shall  from  time to time  reasonably
request.  Documents  to which IHS shall have access  shall  include,  but not be
limited to, RoTech's tax returns and related work papers since their  inception;
and RoTech  shall make,  or cause to be made,  extracts  thereof as IHS or their
representatives  may  request  from  time  to  time  to  enable  IHS  and  their
representatives  to  investigate  the affairs of RoTech and the  accuracy of the
representations and warranties made in this Agreement.  RoTech shall cause their
accountants to cooperate with IHS and to disclose the results of audits relating
to RoTech and to produce the working papers relating  thereto.  Without limiting
any of the foregoing, it is agreed that IHS will have full access to any and all
agreements  between and among the  previous and current  shareholders  regarding
their  ownership of shares or the  management or operation of RoTech.  Access of
IHS pursuant to the foregoing  shall be initiated and  coordinated  only through
William P. Kennedy,  Stephen P. Griggs,  Rebecca R. Irish,  Janet L. Ziomek,  or
such other  persons as RoTech may from time to time  designate.  All such access
shall be granted at a reasonable time and upon reasonable notice.

       6.2 ACCESS TO IHS INFORMATION  AND RECORDS BEFORE  CLOSING.  Prior to the
Closing Date, RoTech may make, or cause to be made, such  investigation of IHS's
(it being  understood  that,  for the purpose of this Article VI, "IHS" shall be
deemed to refer  collectively  to IHS and the IHS  Subsidiaries)  financial  and
legal  condition as RoTech deems  necessary or advisable to  familiarize  itself
with IHS and/or matters  relating to its history or operation.  IHS shall permit
RoTech  and  its  authorized   representatives   (including  legal  counsel  and
accountants),  to have full access to IHS's books and  records  upon  reasonable
notice and during normal  business hours,  and IHS will furnish,  or cause to be
furnished, to RoTech such financial and operating data and other information and
copies of documents  with respect to IHS's  products,  services,  operations and
assets as RoTech shall from time to time reasonably request.  Documents to which
RoTech shall have access shall include, but not be limited to, IHS's tax returns
and related work papers since their  inception;  and IHS shall make, or cause to
be made,  extracts thereof as RoTech or their  representatives  may request from
time to time to enable  RoTech  and their  representatives  to  investigate  the
affairs of IHS and the accuracy of the  representations  and warranties  made in
this Agreement.  IHS shall cause their  accountants to cooperate with RoTech and
to  disclose  the  results of audits  relating to IHS and to produce the working
papers relating  thereto.  Without  limiting any of the foregoing,  it is agreed
that RoTech will have full  access to any and all  agreements  between and among
the previous and current shareholders regarding their ownership of shares or the
management or operation of IHS. Access of RoTech pursuant to the foregoing shall
be initiated and  coordinated  only through Taylor  Pickett,  Brian K. Davidson,
Marshall A. Elkins,  Brad Bennett, or such other persons as IHS may from time to
time  designate.  All such access shall be granted at a reasonable time and upon
reasonable notice.

       6.3 RETURN OF RECORDS.  If the transactions  contemplated  hereby are not
consummated  and this Plan of Merger  terminates,  each party agrees promptly to
return upon request all  documents,  contracts,  records,  or  properties of the
other party and all copies thereof furnished pursuant to this Article VI or


                                      A-21
<PAGE>

otherwise.   All  information  disclosed  by  any  party  or  any  affiliate  or
representative  of any party shall be deemed to be "Evaluation  Material"  under
the terms of the  Confidentiality  Agreements,  dated June 12, 1997 and June 16,
1997, respectively, between RoTech and IHS (the "Confidentiality Agreements").

       6.4 EFFECT OF ACCESS.

       (A) Nothing  contained  in this  Article VI shall be deemed to create any
           duty or  responsibility on the part of either party to investigate or
           evaluate the value,  validity,  or  enforceability  of any  contract,
           lease or, other asset included in the assets of the other party.

       (B) With  respect  to  matters  as to which any  party  has made  express
           representations  or warranties  herein, the parties shall be entitled
           to rely upon such express representations and warranties irrespective
           of any investigations made by such parties.


                            ARTICLE VII: COVENANTS

       7.1  PRESERVATION  OF  BUSINESS.  Prior  to  the  Effective  Time  or the
termination of this Agreement,  RoTech will conduct its business in the ordinary
course. RoTech will use its commercially reasonable best efforts to preserve the
business  organization  of  RoTech  intact,  to  keep  available  to IHS and the
Surviving  Corporation the services of the present  employees of RoTech,  and to
preserve for IHS and the Surviving  Corporation  the goodwill of the  suppliers,
customers and others having business relations with RoTech.

       7.2 MATERIAL TRANSACTIONS BY ROTECH. Prior to the Effective Time, without
first obtaining the written consent of IHS, RoTech will not, and will not permit
any RoTech  Subsidiary  to (in each case other than (i) as  contemplated  by the
terms of the Plan of Merger and the other documents  contemplated  hereby,  (ii)
with respect to transactions  for which there is a binding  commitment  existing
prior to the date hereof and disclosed in the RoTech Disclosure Schedules, (iii)
transactions described on Exhibit 7.2 to the RoTech Disclosure Schedule which do
not vary materially from the terms set forth on such Exhibit 7.2 or as otherwise
disclosed herein):

       (A) Encumber any asset or enter into any transaction or make any contract
           or  commitment  relating to the  properties,  assets and  business of
           RoTech, other than in the ordinary course of business;

       (B) Acquired  any  assets,   securities,   or  businesses  in  excess  of
           $5,000,000 in any one transaction;

       (C) Enter  into any  employment  contract  which is not  terminable  upon
           notice of 90 days or less,  at will,  and without  penalty  except as
           provided  herein  and  except  in the  ordinary  course  of  RoTech's
           business;

       (D) Enter into any contract or agreement  which (i) cannot be  terminated
           or does not terminate  within 12 months or less without cause or (ii)
           obligates RoTech for amounts in excess of $250,000;

       (E) Make any  payment or  distribution  to the  trustee  under any bonus,
           pension,  profit-sharing or retirement plan or arrangement,  or incur
           any obligation to make any such payment or contribution  which is not
           in accordance with RoTech's usual past practice,  or make any payment
           or contributions or incur any obligation pursuant to or in respect of
           any other plan or  contract or  arrangement  providing  for  bonuses,
           options,   executive  incentive  compensation,   pensions,   deferred
           compensation,   retirement  payments,  profit-sharing  or  the  like,
           establish or enter into any such plan,  contract or  arrangement,  or
           terminate or modify any plan;

       (F) Guarantee the obligations of any person, firm or corporation,  except
           in the ordinary course of business consistent with prior practices;

       (G) Amend its Certificates of Incorporation or By-laws;

       (H) Except  pursuant to  options,  warrants,  conversion  rights or other
           contractual  rights disclosed on Exhibit 3.2 to the RoTech Disclosure
           Schedule,  issue any shares of its  capital  stock,  effect any stock
           split or otherwise  change its  capitalization,  provided that RoTech
           shall be


                                      A-22
<PAGE>

         permitted to issue additional  options to employees for the purchase of
         up to 100,000  shares at an exercise  price of not less than the market
         value of such stock as of the  respective  dates on which such  options
         are granted;

       (I) Take any  action of a  character  described  in  Section  3.14(b)  to
           3.14(n), inclusive, other than 3.14(h).

       7.3 MEETINGS OF STOCKHOLDERS.

       (A) RoTech  will  take  all  steps   necessary  in  accordance  with  its
           Certificate  of  Incorporation  and By-laws to call,  give notice of,
           convene  and  hold  a  meeting  of  its  stockholders   (the  "RoTech
           Stockholders Meeting") as soon as practicable after the effectiveness
           of the Registration Statement (as defined in Section 7.4 hereof), for
           the  purpose  of  approving  this Plan of Merger  and for such  other
           purposes as may be  necessary.  Unless this Plan of Merger shall have
           been validly terminated as provided herein, the Board of Directors of
           RoTech  (subject to the provisions of Section 8.1(d) hereof) will (i)
           recommend  to its  stockholders  the approval of this Plan of Merger,
           the  transactions  contemplated  hereby  and any other  matters to be
           submitted to the stockholders of RoTech in connection  therewith,  to
           the extent that such approval is required by applicable  law in order
           to consummate  the Merger,  and (ii) use its  reasonable,  good faith
           efforts to obtain the  approval by its  stockholders  of this Plan of
           Merger and the transactions contemplated hereby.

       (B) IHS will take all steps  necessary in accordance with its Certificate
           of  Incorporation  and By-laws to call,  give notice of , convene and
           hold a meeting of its stockholders (the "IHS  Stockholders  Meeting")
           as soon as practicable  after the  effectiveness  of the Registration
           Statement  (as defined in Section 7.4  hereof),  for the  purposes of
           approving  this Plan of Merger and for such other  purposes as may be
           necessary.  Unless  this  Plan of  Merger  shall  have  been  validly
           terminated as provided herein, the Board of Directors of IHS (subject
           to the provisions of Section 8.1(f) hereof) will (i) recommend to its
           stockholders  the approval of this plan or Merger,  the  transactions
           contemplated  hereby  and any other  matters to be  submitted  to the
           stockholders of IHS in connection therewith,  to the extent that such
           approval is required by  applicable  law in order to  consummate  the
           Merger, and (ii) use its reasonable, good faith efforts to obtain the
           approval  by  its  stockholders  of  this  Plan  of  Merger  and  the
           transactions contemplated hereby.

       7.4 REGISTRATION STATEMENT.

       (A) IHS shall  prepare  and file  with the SEC and any  other  applicable
           regulatory  bodies, as soon as reasonably  practicable a Registration
           Statement  on Form S-4 with respect to the shares of IHS Common Stock
           to be issued in the Merger (the "Registration  Statement"),  and will
           otherwise  proceed  promptly  to  satisfy  the  requirements  of  the
           Securities  Act. Such  Registration  Statement  shall contain a joint
           proxy statement of IHS and RoTech (the "Proxy Statement")  containing
           the information  required by the Exchange Act. RoTech shall cooperate
           with IHS in the preparation and filing of the Registration  Statement
           and  Proxy  Statement,  and  promptly  will  provide  to IHS all such
           information,  including pro forma financial  information,  as IHS may
           reasonably request for inclusion in such filings.  IHS shall take all
           reasonable steps to cause the  Registration  Statement to be declared
           effective and to maintain such effectiveness  until all of the shares
           covered  thereby have been  distributed.  IHS shall promptly amend or
           supplement  the  Registration  Statement  to the extent  necessary in
           order to make the statements therein not misleading or to correct any
           misstatements which have become false or misleading; provided that if
           such  statements  or  misstatements  accurately  reflect  information
           supplied for inclusion in the Registration  Statement by RoTech, such
           obligation   shall  adhere  only  upon  RoTech's   supplying  to  IHS
           corrective  information,   which  RoTech  hereby  agrees  to  provide
           promptly. IHS and RoTech shall use their respective reasonable,  good
           faith efforts to have the Proxy  Statement  approved by the SEC under
           the  provisions of the Exchange  Act. IHS shall  provide  RoTech with
           copies of all filings  made  pursuant  to this  Section 7.4 and shall
           consult with RoTech on responses to any comments made by the Staff of
           the SEC with respect thereto.


                                      A-23
<PAGE>

       (B) RoTech  covenants  that  the  information   supplied  by  RoTech  for
           inclusion in the  Registration  Statement  shall not, at the time the
           Registration  Statement  is  declared  effective,  at  the  time  any
           amendment or supplement  thereto is declared  effective,  at the time
           the Proxy Statement is first mailed to holders of RoTech Common Stock
           and IHS Common Stock,  at the respective  times of the IHS and RoTech
           Stockholders  Meetings, and at the Effective Time, contain any untrue
           statement  of a  material  fact or omit to state  any  material  fact
           required  to be  stated  therein  or  necessary  in order to make the
           statements   therein  not  misleading.   RoTech  covenants  that  the
           information  supplied by RoTech for inclusion in the Proxy  Statement
           shall not, at the date the Proxy Statement (or any amendment  thereof
           or  supplement  thereto) is first mailed to holders of RoTech  Common
           Stock and IHS Common  Stock,  at the time any amendment or supplement
           thereto is declared effective, at the respective times of the IHS and
           RoTech  Stockholders  Meetings and at the Effective Time, contain any
           untrue  statement  of a material  fact or omit to state any  material
           fact required to be stated  therein or necessary in order to make the
           statements  therein,  in light of the circumstances  under which they
           are made, not misleading.  If at any time prior to the Effective Time
           any event or  circumstance  relating  to RoTech,  or its  officers or
           Directors,  should be  discovered by RoTech which should be set forth
           in an amendment to the Registration  Statement or a supplement to the
           Proxy  Statement,  RoTech shall promptly inform IHS. RoTech covenants
           that all  documents,  if any, that RoTech is  responsible  for filing
           with the SEC in connection with the transactions  contemplated herein
           will comply as to form and  substance in all material  respects  with
           the applicable  requirements  of the Securities Act and the rules and
           regulations  thereunder  and  the  Exchange  Act and  the  rules  and
           regulations thereunder.

       (C) IHS covenants that the  information  supplied by IHS for inclusion in
           the  Registration  Statement shall not, at the time the  Registration
           Statement  is  declared  effective,  at the  time  any  amendment  or
           supplement  thereto  is  declared  effective,  at the time the  Proxy
           Statement is first  mailed to holders of RoTech  Common Stock and IHS
           Common  Stock,  at  the  respective  times  of  the  IHS  and  RoTech
           Stockholders  Meetings and at the Effective Time,  contain any untrue
           statement  of a  material  fact or omit to state  any  material  fact
           required  to be  stated  therein  or  necessary  in order to make the
           statements  therein not misleading.  The information  supplied by IHS
           for  inclusion  in the Proxy  Statement  to be sent to the holders of
           RoTech Common Stock and IHS Common Stock in  connection  with the IHS
           and RoTech  Stockholders  Meetings  shall not,  at the date the Proxy
           Statement (or any amendment  thereof or supplement  thereto) is first
           mailed to holders of RoTech Common Stock and IHS Common Stock, at the
           respective times of the IHS and RoTech Stockholders Meeting or at the
           Effective  Time,  contain any untrue  statement of a material fact or
           omit to state any  material  fact  required  to be stated  therein or
           necessary  in order to make the  statement  therein,  in light of the
           circumstances  under which they were made, not misleading.  If at any
           time prior to the Effective Time, any event or circumstance  relating
           to IHS or its officers or directors should be discovered by IHS which
           should be set forth in an amendment to the Registration  Statement or
           a supplement to the Proxy Statement, IHS shall promptly inform RoTech
           and shall promptly file such amendment to the Registration Statement.
           All  documents  that IHS is  responsible  for filing  with the SEC in
           connection with the transactions  contemplated  herein will comply as
           to form and substance in all material  respects  with the  applicable
           requirements  of the  Securities  Act and the rules  and  regulations
           thereunder  and  the  Exchange  Act  and the  rules  and  regulations
           thereunder.

       (D) Prior to the Closing Date, IHS shall use its  reasonable,  good faith
           efforts to cause the shares of IHS Common Stock to be issued pursuant
           to the Merger to be  registered  or  qualified  under all  applicable
           securities or Blue Sky laws of each of the states and  territories of
           the  United  States,  and to take  any  other  actions  which  may be
           necessary to enable the IHS Common Stock to be issued pursuant to the
           Merger to be distributed in each such jurisdiction.

       (E) Prior to the  Closing  Date,  IHS  shall  file a  Subsequent  Listing
           Application  with the NYSE relating to the shares of IHS Common Stock
           to be issued in connection with the Merger,


                                      A-24
<PAGE>

           and shall use its best  efforts  to cause  such  shares of IHS Common
           Stock to be approved for listing on the NYSE, upon official notice of
           issuance, prior to the Closing Date.

       (F) RoTech shall furnish all information to IHS with respect to RoTech as
           IHS may reasonably request for inclusion in or in connection with the
           Registration  Statement  and  Proxy  Statement  and  shall  otherwise
           cooperate with IHS in the preparation and filing of such documents

       7.5 EXEMPTION FROM STATE TAKEOVER LAWS.  RoTech shall take all reasonable
steps necessary and within its power to exempt the Merger from the  requirements
of any state takeover  statute or other similar state law which would prevent or
impede the consummation of the transactions  contemplated  hereby,  by action of
RoTech's Board of Directors.

       7.6  HSR ACT  COMPLIANCE.  IHS  and  RoTech  shall  promptly  make  their
respective  filings,  and shall  thereafter  use their  reasonable,  good  faith
efforts to promptly make any required  submissions,  under the Hart-Scott-Rodino
Antitrust  Improvements  Act of 1976, as amended (the "HSR Act") with respect to
the Merger and the  transactions  contemplated  hereby.  IHS and RoTech will use
their  respective  reasonable,  good faith efforts to obtain all other  permits,
authorizations,  consents  and  approvals  from third  parties and  governmental
authorities necessary to consummate the Merger and the transactions contemplated
hereby.

       7.7 PUBLIC  DISCLOSURES.  IHS and  RoTech  will  consult  with each other
before issuing any press release or otherwise  making any public  statement with
respect to the transaction  contemplated  by this Plan of Merger,  and shall not
issue any such press  release or make any such  public  statement  prior to such
consultation  except as may be required by applicable law or requirements of the
NYSE and  NASDAQ.  The  parties  shall  issue a joint  press  release,  mutually
acceptable to IHS and RoTech,  promptly upon execution and delivery of this Plan
or Merger.

       7.8 RESIGNATION OF PROTECH DIRECTORS AND EXECUTIVE OFFICERS.  On or prior
to the Closing Date, RoTech shall deliver to IHS evidence satisfactory to IHS of
the  resignation  of the  Directors  and  executive  officers  of  RoTech,  such
resignations to be effective on the Closing Date.

       7.9 INTERIM FINANCIAL STATEMENTS; EXCHANGE ACT REPORTS.

       (A) RoTech  covenants  that  prior  to  the  Effective  Time  or  earlier
           termination  of this  Agreement,  it will  deliver  to IHS a  balance
           sheet,  income statement and statement of cash flow as of and for (i)
           the one-month  period ending the last day of each month subsequent to
           the date of this  Agreement  that is not the  last  month of a fiscal
           quarter that such consolidated financial statements will be delivered
           within 30 days  following  the end of each such  month,  and (ii) the
           three-month period ending on the last day of each fiscal quarter (the
           "RoTech Quarterly Financial  Statements"),  which quarterly statement
           will be  delivered  within  30 days  following  the end of each  such
           quarter.

       (B) IHS covenants that prior to the Effective Time or earlier termination
           of this Agreement,  it will deliver to RoTech a balance sheet, income
           statement  and  statement of cash flow as of and for the  three-month
           period  ending  on the  last day of each  fiscal  quarter  (the  "IHS
           Quarterly Financial  Statements"),  which quarterly statement will be
           delivered within 30 days following the end of each such quarter.

       (C) RoTech  covenants  that from and after the date hereof,  it will file
           all  periodic  reports  required to be filed by it under the Exchange
           Act and will  promptly  deliver to IHS copies of all such reports and
           supporting internal management reports relating thereto.

       (D) IHS covenants  that from and after the date hereof,  it will file all
           periodic  reports  required to be filed by it under the  Exchange Act
           and will promptly deliver to RoTech copies of all such reports.

       7.10  NO  SOLICITATIONS.  From  the  date  of this  Agreement  until  the
Effective Time or until this Agreement is terminated in accordance  with Article
VIII hereof,  RoTech shall not initiate,  solicit or encourage (including by way
of furnishing assistance or proprietary information), or take any other


                                      A-25
<PAGE>

action to facilitate,  any inquiries or the making of any proposal  relating to,
or that may reasonably be expected to lead to any RoTech  Competing  Transaction
(as defined  below),  or enter into any discussions or negotiate with any person
or entity  in  furtherance  of such  inquiries  or to obtain a RoTech  Competing
Transaction,  or  agree  to or  endorse  any  RoTech  Competing  Transaction  or
authorize or permit any of the officers, directors or employees of RoTech or the
RoTech  Subsidiaries  or any investment  banker,  financial  advisor,  attorney,
accountant or other  representative  retained by RoTech or any RoTech Subsidiary
to take any such action,  and RoTech shall  promptly  notify IHS of all relevant
terms (including the identity of the parties involved) of any such inquiries and
proposals  received  by RoTech or any  RoTech  Subsidiary  or any such  officer,
director,  investment banker, financial advisor,  attorney,  accountant or other
representative  relating to any of such matters, and if such inquiry or proposal
is in writing,  RoTech shall promptly  deliver or cause to be delivered to IHS a
copy of such inquiry or proposal;  provided,  however that, prior to the receipt
of  the  approval  of  the  Merger  of  RoTech's   stockholders  at  the  RoTech
Stockholders Meeting,  nothing contained in this Section 7.10 shall prohibit the
Board of Directors  of RoTech from (i)  furnishing  information  to, or entering
into  discussions or negotiations  with, any person or entity in connection with
an  unsolicited  bona fide  offer by such  person or  entity to  acquire  RoTech
pursuant to a merger,  consolidation,  share exchange,  business  combination or
other  similar  transaction  or to  acquire  greater  than 50% of the  assets or
capital stock of RoTech and the RoTech  Subsidiaries,  taken as a whole,  to the
extent and only to the extent that (A) the Board of Directors  of RoTech,  after
consultation with and based upon advice of independent legal counsel, determines
in good faith that such action is advisable  for RoTech's  Board of Directors to
comply  with  its  fiduciary  duties  under  applicable  law  and (B)  prior  to
furnishing  such  information  to, or entering into  discussions or negotiations
with, such person or entity,  RoTech (x) provides notice to IHS of the person or
entity and (y)  enters  into a  confidentiality  agreement  with such  person or
entity reasonably calculated under the circumstances, in the reasonable judgment
of RoTech, to protect the confidentiality of RoTech's  proprietary  information;
or (ii) complying with Rule 14e-2 promulgated under the Exchange Act with regard
to a RoTech Competing Transaction.  For the purposes of this Agreement,  "RoTech
Competing  Transaction"  shall  mean  any  of  the  following  (other  than  the
transactions  contemplated by this Agreement)  involving RoTech: (i) any merger,
consolidation, share exchange, business combination or similar transaction; (ii)
any sale, lease, exchange,  mortgage,  pledge,  transfer or other disposition of
20% or more of the  assets of RoTech  and the  RoTech  Subsidiaries,  taken as a
whole;  (iii)  any  tender  offer or  exchange  offer  for more  than 20% of the
outstanding  shares of the capital  stock of RoTech;  (iv) any person  acquiring
beneficial  ownership  of, or any group (as such term is defined  under  Section
13(d) of the Exchange Act) being formed which beneficially owns or has the right
to acquire beneficial ownership of, 15% or more of the outstanding shares of the
capital stock of RoTech; or (v) any public  announcement of a proposal,  plan or
intention to do any of the  foregoing  or any  agreement to engage in any of the
foregoing.

       7.11 OTHER  ACTIONS.  Subject to the  provisions  of Section 7.10 hereof,
none of RoTech,  IHS and Merger Sub shall  knowingly or  intentionally  take any
action,  or omit to take any  action,  if such  action  or  omission  would,  or
reasonably  might  be  expect  to,  result  in any of  its  representations  and
warranties set forth herein being or becoming untrue in any material respect, or
in any of the  conditions  to the  Merger  set forth in this Plan or Merger  not
being satisfied,  or delay the Effective Time or (unless such action is required
by applicable law) which would materially adversely affect the ability of RoTech
or IHS to obtain any consents or approvals  required for the consummation of the
Merger  without  imposition  of a condition  or  restriction  which would have a
material  adverse effect on the Surviving  Corporation or which would  otherwise
materially  impair  the  ability  of RoTech or IHS to  consummate  the Merger in
accordance  with  terms  of  this  Plan  of  Merger  or  materially  delay  such
consummation. Without limiting the generality of the foregoing, RoTech shall use
its reasonable best efforts to obtain all consents  required of third parties in
respect of the Merger under all material contracts to which RoTech or any RoTech
Subsidiary is a party, including lessor consents.

       7.12 Accounting Methods.  Prior to Closing,  neither IHS nor RoTech shall
change, in any material respect, its methods of accounting in effect at its most
recent  fiscal year end,  except as required  by changes in  generally  accepted
accounting principles as concurred by such parties' independent accountants.


                                      A-26
<PAGE>

     7.13 COOPERATION.

       (A) IHS and RoTech  shall  together,  or  pursuant  to an  allocation  of
           responsibility agreed to between them, (i) cooperate with one another
           in  determining  whether  any  filings  are  required  to be  made or
           consents  required to be obtained  in any  jurisdiction  prior to the
           Effective   Time  in  connection   with  the   consummation   of  the
           transactions  contemplated  hereby and  cooperate  in making any such
           filings  promptly and in seeking to obtain timely any such  consents,
           (ii) use their respective commercially reasonable efforts to cause to
           be lifted any injunction prohibiting the Merger, or any part thereof,
           or the other transactions  contemplated thereby, and (iii) furnish to
           one another and to one another's  counsel all such information as may
           be required to effect the foregoing actions.

       (B) Subject to the terms and conditions herein provided,  and unless this
           Plan of Merger shall have been validly terminated as provided herein,
           each of IHS and RoTech shall use all reasonable  efforts (i) to take,
           or cause to be taken,  all actions  necessary to comply promptly with
           all legal  requirements  which may be  imposed  on such party (or any
           subsidiaries or affiliates of such party) with respect to the Plan of
           Merger  and  to  consummate  the  transactions  contemplated  hereby,
           subject to the vote of its stockholders  described above, and (ii) to
           obtain (and to cooperate with the other party to obtain) any consent,
           authorization,  order  or  approval  of,  or any  exemption  by,  any
           governmental  entity  and/or any other public or private  third party
           which is  required to be obtained or made by such party or any of its
           subsidiaries or affiliates in connection with this Plan of Merger and
           the  transactions  contemplated  hereby.  Each of IHS and RoTech will
           promptly  cooperate  with and  furnish  information  to the  other in
           connection with any such burden  suffered by, or requirement  imposed
           upon,  either of them or any of their  subsidiaries  or affiliates in
           connection with the foregoing.

       7.14 STOCK OPTIONS; WARRANTS.

       (A) As of the  Effective  Time,  by virtue of the Merger and  without any
           action  on the  part of the  participants  therein,  each  option  to
           purchase   shares  of  RoTech   Common  Stock  that  is   outstanding
           immediately prior to the Effective Time ("RoTech  Options"),  whether
           or not  exercisable,  shall be replaced by a substitute  option (such
           new options being hereinafter  referred to as "IHS Exchange Options")
           to purchase  that  number of shares of IHS Common  Stock equal to the
           number of  shares  of RoTech  Common  Stock  subject  to such  option
           multiplied  by .5806 at an  exercise  price per  share of IHS  Common
           Stock  equal to the  option  price per share of RoTech  Common  Stock
           subject to such option in effect  immediately  prior to the Effective
           Time divided by .5806.  Each such IHS Exchange  Option will otherwise
           contain  substantially  the same terms and  conditions  as the RoTech
           Option it  replaces,  provided  that such IHS  Exchange  Option  will
           permit  "cashless  exercise"  of  such  options.  IHS  shall  use its
           reasonable best efforts to file with the SEC a registration statement
           on Form S-8 (or other appropriate form) or a post-effective amendment
           to the  Registration  Statement  within  thirty  (30) days  after the
           Effective  Time, for purposes of registering  all IHS Shares issuable
           after the Effective  Time upon exercise of the IHS Exchange  Options,
           and use all reasonable efforts to have such registration statement or
           post-effective  amendment  become  effective  and to  comply,  to the
           extent applicable, with state securities or blue sky law with respect
           hereto at the Effective  Time.  Unless  otherwise  prohibited by law,
           such  Form  S-8  shall  also  register  the  reoffer  and  resale  by
           affiliates of IHS of the IHS Shares  issuable to such affiliates upon
           exercise  of  the  IHS  Exchange  Options.  IHS  shall  maintain  the
           effectiveness  under the Securities Act of such Form S-8 registration
           statement as long as any such affiliates' options remain outstanding.

       (B) As of the Effective  Time,  each warrant to purchase RoTech Shares (a
           "RoTech Warrant") then outstanding shall remain outstanding and shall
           be deemed to be a warrant to purchase,  in place of the RoTech Shares
           previously  subject to such RoTech Warrant,  that number of shares of
           IHS Common Stock equal to the product of the number of RoTech  Shares
           subject to such RoTech Warrant, and not exercised prior the Effective
           Time, multiplied by .5806 (the "IHS Exchange Warrants"). The exercise
           price per share shall be equal to the exercise  price per share under
           the RoTech Warrant divided by .5806.


                                      A-27
<PAGE>

       (C) RoTech will take such reasonable steps as are necessary to effectuate
           the agreement of this Section 7.14.

       7.15 NOTICE OF SUBSEQUENT EVENTS. Each party hereto promptly shall notify
the other  parties  of any  changes,  additions  or events of which they have or
obtain  knowledge  as to which they have  concluded  or  reasonably  should have
concluded  would (i) cause any  material  change in or material  addition to any
Exhibit to its Disclosure  Schedule  delivered by the notifying party under this
Plan of  Merger,  (ii) toll the time  period for  consummation  of the Merger as
provided in Section 8.1(b)(iii) hereof, or (iii) otherwise would in such party's
reasonable  judgment  likely result in a breach of this  Agreement by such party
prior to the Closing Date, promptly after the occurrence of the same.

       7.16  COOPERATION  REGARDING SEC FILINGS.  Prior to the  Effective  Time,
RoTech shall cooperate and provide all information  reasonably  requested by IHS
and its underwriters, including, without limitation, copies of audit reports and
related  work  papers,   accountant's   comfort   letters,   and   responses  to
underwriters'  due diligence  requests,  in connection with any filing by IHS of
any registration statement or other document or report with the SEC.

       7.17 DISTRIBUTIONS.  Prior to the Effective Time, without first obtaining
the  written  consent  of  RoTech,  IHS will not pay any  dividend  or any other
distribution of cash or property in respect of its capital stock.

       7.18 TAX OPINIONS.  The parties  hereto shall use their  reasonable  best
efforts to cause counsel for each of IHS and RoTech to render opinions as to the
federal income tax consequences of the Merger,  which opinions shall be filed as
Exhibits to the  Registration  Statement.  Each of IHS and RoTech agrees that it
shall provide certificates containing reasonable representations to such counsel
in connection with the rendering of such opinions.

       7.19 MATERIAL  TRANSACTIONS BY IHS. Prior to the Effective Time,  without
first  obtaining  the  written  consent of RoTech,  which  consent  shall not be
unreasonably withheld, IHS will not enter into any transaction pursuant to which
IHS would be required to issue  shares of IHS Common Stock having a market value
at the time of issuance of more than Two Hundred  Fifty  Million  ($250,000,000)
Dollars,  provided  that  RoTech  shall  be  deemed  to have  consented  to such
transaction  if  RoTech  does not give  notice to IHS of its  objection  thereto
within  five (5)  business  days  after the date on which IHS shall  have  given
RoTech  notice of such  proposed  transaction  together  with  such  information
thereon as would  reasonably  be  necessary  to enable  RoTech to  evaluate  the
business merits of such transaction.

       7.20  COOPERATION  REGARDING  ROTECH  DEBENTURES.  Prior to the Effective
Time,  IHS shall  cooperate and provide such  information as shall be reasonably
requested by RoTech in connection  with RoTech's  obligations  arising under its
indenture pertaining to RoTech's 5 1/4% Convertible  Subordinated Debentures Due
2003 as a result of the Merger.  IHS  acknowledges  that the  debenture  holders
under  such  RoTech  indenture  have the  right  to  require  repurchase  of the
debentures held by them as a result of the Merger.


                                      A-28
<PAGE>

               ARTICLE VIII: TERMINATION, AMENDMENT, AND WAIVER

       8.1 TERMINATION.  This Plan of Merger may be terminated at any time prior
to the Effective Time,  either before or after approval of matters  presented in
connection  with the Merger by the holders of RoTech Common Stock and IHS Common
Stock:

       (A) by mutual written consent of IHS, Merger Sub and RoTech;

       (B) by either IHS or RoTech:

          (i)   if, upon a vote at a duly held  meeting of  stockholders  or any
                adjournment  thereof,  any  approval  of the  holders  of RoTech
                Common  Stock   necessary  to  consummate  the  Merger  and  the
                transactions contemplated hereby shall not have been obtained;

          (ii)  if, upon a vote at a duly held  meeting of  stockholders  or any
                adjournment  thereof,  any approval of the holders of IHS Common
                Stock  necessary to consummate  the Merger and the  transactions
                contemplated hereby shall not have been obtained;

          (iii) if the  Merger  shall  not have  been  consummated  on or before
                November 30, 1997,  unless the failure to consummate  the Merger
                is the result of a willful and  material  breach of this Plan of
                Merger by the party  seeking to  terminate  this Plan of Merger,
                provided,  however,  that the  passage of such  period  shall be
                tolled for any part  thereof  (but not  exceeding 60 days in the
                aggregate) during which any party shall be subject to a nonfinal
                order,  decree,  filing  or  action  restraining,  enjoining  or
                otherwise  prohibiting  the  consummation  of the  Merger or the
                calling or holding of a meeting of stockholders;

          (iv)  if any court of  competent  jurisdiction  or other  governmental
                entity shall have issued an order, decree or ruling or taken any
                other action  permanently  enjoining,  restraining  or otherwise
                prohibiting the Merger and such order,  decree,  ruling or other
                action shall have become final and nonappealable;

          (v)   in  the  event  of  a  breach   by  the   other   party  of  any
                representation,  warranty, covenant or other agreement contained
                in this Plan of Merger which exists on the Closing Date that (A)
                would  give  rise to the  failure  of a  condition  set forth in
                Section  9.2(a) or (b) or Section  9.3(a) or (b), as applicable,
                and (B) cannot be or has not been cured within 30 days after the
                giving of written  notice to the breaching  party of such breach
                (a "Material  Breach")  (provided that the terminating  party is
                not then in  Material  Breach of any  representation,  warranty,
                covenant or other agreement contained in this Plan of Merger);

          (vi)  in the event of (i) notice  pursuant to Section 7.15 of a breach
                by the other party of any representation,  warranty, covenant or
                other agreement  contained in this Plan of Merger or (ii) notice
                from such party to the other party of such other party's  breach
                of any  representation,  warranty,  covenant or other  agreement
                contained in this Plan of Merger, in either case which cannot be
                or has not been cured within 30 days after the giving of written
                notice of such  breach to or by the other party  (provided  that
                the  terminating  party is not then in  Material  Breach  of any
                representation,  warranty, covenant or other agreement contained
                in this Plan of Merger); or

          (vii) if the  average of the last per share sale  prices of IHS common
                stock,  as reported on the NYSE Composite Tape, for the ten (10)
                consecutive  trading  days  ending  on  the  fifth  trading  day
                immediately  preceding the date set for the RoTech  Stockholders
                Meeting is equal to or less than $33.00.

       (C) by either IHS or RoTech in the event  that (i) all of the  conditions
           to the  obligation  of such  party to effect  the Merger set forth in
           Section 9.1 shall have been  satisfied  and (ii) any condition to the
           obligation  of such  party to effect  the Merger set forth in Section
           9.2 (in the case of IHS) or  Section  9.3 (in the case of  RoTech) is
           not  capable  of  being  satisfied  prior  to the  end of the  period
           referred to in Section 8.1(b) (iii);


                                      A-29
<PAGE>

       (D) by RoTech,  if RoTech's Board of Directors shall have (i) determined,
           in the exercise of its fiduciary  duties under applicable law, not to
           recommend  the Merger to the  holders of RoTech  Shares or shall have
           withdrawn  such  recommendation  or  (ii)  approved,  recommended  or
           endorsed  any RoTech  Competing  Transaction  other than this Plan of
           Merger;

       (E) By IHS if (i) the  Board  of  Directors  of  RoTech  fails to make or
           withdraws its recommendation of the adoption of this Agreement or the
           Merger;  (ii) the Board of Directors of RoTech shall have recommended
           to RoTech's  stockholders any RoTech Competing Transaction or entered
           into an agreement with respect to a RoTech Competing Transaction;  or
           (iii)  a  tender  offer  or  exchange  offer  for  20% or more of the
           outstanding  shares of capital stock of RoTech is commenced,  and the
           Board of  Directors  of RoTech  recommends,  within  the time  period
           specified  under Rule 14e-2 under the  Exchange  Act,  that  RoTech's
           stockholders tender their shares into such tender or exchange offer;

       (F) by IHS,  if IHS's Board of  Directors  shall have  determined  in the
           exercise  of  its  fiduciary  duties  under  applicable  law,  not to
           recommend  the  Merger to the  holders  of IHS  Shares or shall  have
           withdrawn such recommendation;

       (G) by RoTech if the Board of Directors of IHS fails to make or withdraws
           its recommendation of the adoption of this Agreement or the Merger.

       8.2 EFFECT OF  TERMINATION.  In the event of  termination of this Plan of
Merger as provided in Section 8.1,  this Plan of Merger shall  forthwith  become
void and have no effect,  without any liability or obligation on the part of any
party,  other than to the extent provided in Sections 6.3 and 8.6, and except to
the extent that such termination  results from the material breach by a party of
any of its representations,  warranties, covenants or other agreements set forth
in this Plan of Merger.

       8.3  AMENDMENT.  This Plan of Merger may be amended by the parties at any
time before or after any required  approval of matters  presented in  connection
with the  Merger by the  holders  of  RoTech  Shares  or IHS  Shares;  provided,
however,  that after any such  approval,  there shall be made no amendment  that
pursuant to the FBCA requires further approval by such  stockholders.  This Plan
of Merger may not be amended except by an instrument in writing signed on behalf
of each of the parties.

       8.4  EXTENSION;  WAIVER.  At any time prior to the  Effective  Time,  the
parties may (a) extend the time for the performance of any of the obligations or
other  acts  of  the  other  parties,   (b)  waive  any   inaccuracies   in  the
representations  and  warranties  contained  in this  Plan of  Merger  or in any
document  delivered  pursuant  to this  Plan of  Merger  or (c)  subject  to the
provision  of  Section  8.3,  waive  compliance  with any of the  agreements  or
conditions  contained  in this Plan of Merger.  Any  agreement  on the part of a
party to any such  extension  or waiver  shall be valid  only if set forth in an
instrument  in writing  signed on behalf of such  party.  Without  limiting  the
generality of the  foregoing,  if the Merger is not  consummated  on or prior to
September  30, 1997, as a result of the  Registration  Statement not having been
declared  effective by the SEC by August 15, 1997, and the Registration has been
declared  effective  by September  30, 1997,  or RoTech and IHS are in bona fide
discussions  with the SEC regarding the  Registration  Statement and  diligently
pursuing the effectiveness of the Registration  Statement with the SEC, then the
date set forth in Section  8.1(b)  (iii)  shall be  extended  to the  earlier of
November 30, 1997,  and the date that is thirty (30) days  following the date on
which the Registration Statement is declared effective. The failure of any party
to this Plan of Merger to assert any of its rights  under this Plan of Merger or
otherwise shall not constitute a waiver of such rights.

       8.5  Procedure  for  Termination,   Amendment,  Extension  or  Waiver.  A
termination of this Plan of Merger pursuant to Section 8.1, an amendment of this
Plan of Merger  pursuant to Section 8.3, or an  extension or waiver  pursuant to
Section 8.4 shall, in order to be effective,  require in the case of IHS, Merger
Sub or RoTech,  action by its Board of Directors or the duly authorized designee
of the Board of Directors.

       8.6 EXPENSES; BREAKUP FEES.

       (A) All costs  and  expenses  incurred  in  connection  with this Plan of
           Merger and the transactions  contemplated hereby shall be paid by the
           party incurring such expense,  it being understood that if the Merger
           is  consummated,  by reason  thereof,  IHS will  indirectly  bear the
           expenses incurred by RoTech.


                                      A-30
<PAGE>

       (B) If the Merger is not  consummated  as a result of termination of this
           Agreement pursuant to Section  8.1(d)(ii),  8.1(e)(ii) or 8.1(e)(iii)
           hereof,  RoTech  shall  pay to IHS a  breakup  fee in the  amount  of
           Twenty-Five   Million   ($25,000,000)   Dollars   plus  all  expenses
           reasonably incurred by IHS in connection with this Plan of Merger and
           collection  of  such  fee.  Notwithstanding  the  foregoing,  if this
           Agreement  is  terminated  pursuant  to Section  8.1(e)(iii)  and the
           tender offer or exchange offer referred to in Section  8.1(e)(iii) is
           for at least  20% but  less  than 50% of the  outstanding  shares  of
           capital stock of RoTech, the breakup fee payable by RoTech under this
           Section   8.6(b)   shall  be  in  the  amount  of   Fifteen   Million
           ($15,000,000) Dollars,  rather than Twenty-Five Million ($25,000,000)
           Dollars plus the said  expenses of IHS. If any breakup fee is paid as
           set forth above,  such payment shall be the sole and exclusive remedy
           of IHS against RoTech hereunder.

       (C) If the Merger is not  consummated  as a result of the  termination of
           this Agreement  pursuant to Section 8.1(d)(i) or 8.1(e)(i) (except as
           a result of the  withdrawal  of the Smith Barney  Opinion for reasons
           other than the existence of a RoTech Competing  Transaction),  RoTech
           shall  pay  to  IHS a  breakup  fee in the  amount  of  Five  Million
           ($5,000,000)  Dollars,  and, in such event, such payment shall be the
           sole  and  exclusive   remedy  of  IHS  against   RoTech   hereunder.
           Notwithstanding  anything  contained  in this  Plan of  Merger to the
           contrary,  under no  circumstances  shall IHS be  entitled to receive
           both the breakup fee described in this Section 8.6(c) and the breakup
           fee described in Section 8.6(b).

       (D) If the Merger is not  consummated  as a result of the  termination of
           this Agreement pursuant to Section 8.1(f) or 8.1(g), IHS shall pay to
           RoTech a  breakup  fee in the  amount  of Ten  Million  ($10,000,000)
           Dollars,  and,  in such  event,  such  payment  shall be the sole and
           exclusive remedy of RoTech against IHS hereunder.


                       ARTICLE IX: CONDITIONS TO CLOSING

       9.1 MUTUAL CONDITIONS. The respective obligations of each party to effect
the  Merger  shall be subject to the  satisfaction,  at or prior to the  Closing
Date, of the following conditions (any of which may be waived in writing by IHS,
Merger Sub or RoTech):

       (A) None  of IHS,  Merger  Sub or  RoTech  nor  any of  their  respective
           subsidiaries shall be subject to any order, decree or injunction by a
           court of  competent  jurisdiction  which (i)  prevents or  materially
           delays  the  consummation  of the  Merger or (ii)  would  impose  any
           material  limitation  on the ability of IHS  effectively  to exercise
           full  rights  of  ownership  of the  common  stock  of the  Surviving
           Corporation  or any  material  portion of the assets of  business  of
           RoTech, taken as a whole.

       (B) No  statute,  rule or  regulation  shall  have  been  enacted  by the
           government (or any  governmental  agency) of the United States or any
           state, municipality or other Political subdivision thereof that makes
           the consummation of the Merger or any other  significant  transaction
           contemplated hereby illegal.

       (C) The holders of shares of RoTech  Common  Stock and the holders of the
           shares of IHS Common  Stock each shall have  approved the adoption of
           this Plan of Merger.

       (D) The shares of IHS Common  Stock to be issued in  connection  with the
           Merger  shall  have been  approved  for  listing  on the  NYSE,  upon
           official   notice  of  issuance,   and  shall  have  been  issued  in
           transactions  qualified or exempt from registration  under applicable
           securities  or Blue Sky laws of such  states and  territories  of the
           United States as may be required.

       (E) The Registration  Statement shall have been declared effective and no
           stop order with  respect to the  Registration  Statement  shall be in
           effect.

       (F) IHS,  Merger  Sub  and  RoTech  shall  have  received  all  consents,
           approvals  and  authorizations  of third parties that are required of
           such third parties prior to the  consummation of the Merger,  in form
           and substance reasonably acceptable to IHS or RoTech, as the case may
           be, except where the failure to obtain any such consent, approval, or
           authorization  would  not  have  a  material  adverse  effect  on the
           business of the Surviving Corporation.


                                      A-31
<PAGE>

       (G) All  approvals  of the Merger  required  under the HSR Act shall have
           been obtained or the waiting periods thereunder shall have expired.

       (H) The  parties  shall have  obtained  consents  from their  senior bank
           lenders to the Merger and the  transactions  contemplated  hereby not
           later than four (4) weeks following the date of this Agreement.

       9.2 CONDITIONS TO  OBLIGATIONS OF IHS AND MERGER SUB. The  obligations of
IHS  and  Merger  Sub to  consummate  the  Merger  and  the  other  transactions
contemplated  hereby  shall be subject to the  satisfaction,  at or prior to the
Closing Date, of the following conditions (any of which may be waived by IHS and
Merger Sub):

       (A) Each of the  agreements  of RoTech to be performed at or prior to the
           Closing  Date  pursuant  to the  terms  hereof  shall  have been duly
           performed in all material respects,  and RoTech shall have performed,
           in all material  respects all of the acts required to be performed by
           it at or prior to the Closing Date by the terms hereof.

       (B) The representations and warranties of RoTech set forth in Article III
           hereof  shall be true  and  correct  as of the  date of this  Plan of
           Merger  and  as of the  Closing  Date,  except  to  the  extent  such
           representations  and warranties  expressly  relate to a specific date
           (in which case such  representations and warranties shall be true and
           correct as of such date); provided, however, that RoTech shall not be
           deemed to be in breach of any such  representations or warranties (i)
           where the  inaccuracies of all  representations  contained in Article
           III  hereof  would not,  in the  aggregate,  have a material  adverse
           effect on RoTech and the RoTech  Subsidiaries,  taken as a whole,  or
           (ii) as a result of the  consequences  that IHS knew or  should  have
           known would arise from the taking of any action permitted to be taken
           by  RoTech  (or  otherwise  approved  by IHS)  under  Section  7.2 or
           otherwise  permitted  herein.  IHS and  Merger  Sub  shall  have been
           furnished with a certificate,  executed by a duly authorized  officer
           of RoTech,  dated the Closing Date,  certifying in such detail as IHS
           and Merger Sub may  reasonably  request as to the  fulfillment of the
           foregoing conditions.

       (C) IHS and Merger Sub shall have obtained,  or obtained the transfer of,
           any licenses and other  regulatory  approvals  necessary prior to the
           Effective Time to allow the Surviving Corporation to operate RoTech's
           business,  unless the  failure to obtain  such  transfer  or approval
           would  not  have  a  material   adverse   effect  on  the   Surviving
           Corporation.

       (D) IHS shall have received an opinion from Winderweedle,  Haines, Ward &
           Woodman, P.A. substantially to the effect set forth in Exhibit 9.2(d)
           hereto.

       (E) All consents, authorizations,  orders and approvals of (or filings or
           registrations  with)  any  governmental  commission,  board  or other
           regulatory body required in connection  with the execution,  delivery
           and  performance  of this Plan of Merger shall have been  obtained or
           made,  except for filings in connection with the Merger and any other
           documents required to be filed after the Effective Time.

       (F) The opinion of  Donaldson  Lufkin & Jenrette  Securities  Corporation
           referred  in  Section  5.14  hereof  shall  not have  been  adversely
           modified  or  withdrawn  as of the Date of the  mailing  of the Proxy
           Statement.

       (G) William P.  Kennedy,  Stephen P.  Griggs,  and Rebecca R. Irish shall
           have  agreed in  writing to  terminate  their  respective  employment
           agreement with RoTech, and (i) William P. Kennedy shall have executed
           and delivered the Severance and Noncompetition  Agreement with RoTech
           in the form of Exhibit 9.2(g)(i) hereto, (ii) Stephen P. Griggs shall
           have executed and delivered an  Employment  Agreement  with RoTech in
           the form of Exhibit  9.2(g)(ii)  hereto,  and (iii)  Rebecca R. Irish
           shall have executed and  delivered  the Severance and  Noncompetition
           Agreement with RoTech in the form of Exhibit 9.2(g)(iii) hereto.

       (H) IHS shall  have  received a "cold  comfort"  letter  from  Deloitte &
           Touche LLP,  RoTech's  independent  accountants,  dated the Effective
           Time and addressed to IHS, as to such matters reasonably requested by
           IHS.


                                      A-32
<PAGE>

       (I) IHS shall have received an opinion from its tax counsel to the effect
         that the Merger will constitute a reorganization  within the meaning of
         Section 368(a) of the Internal Revenue Code of 1986, as amended,  which
         opinion may be based upon reasonable  representations  of fact provided
         by officers of IHS, RoTech, and Merger Sub.

       9.3  CONDITIONS TO OBLIGATIONS  OF ROTECH.  The  obligations of RoTech to
consummate the Merger and the other  transactions  contemplated  hereby shall be
subject to the  satisfaction,  at or prior to the Closing Date, of the following
conditions (any of which may be waived by RoTech):

       (A) Each of the  agreements  of IHS and Merger Sub to be  performed at or
           prior to the Closing  Date  pursuant to the terms  hereof  shall have
           been duly performed, in all material respects, and IHS and Merger Sub
           shall  have  performed,  in all  material  respects,  all of the acts
           required to be  performed  by them at or prior to the Closing Date by
           the terms hereof.

       (B) The representations and warranties of IHS and Merger Sub set forth in
           Articles IV and V hereof  shall be true and correct as of the date of
           this Plan of Merger, and as of the Closing Date, except to the extent
           such  representations  and warranties  expressly relate to a specific
           date (in which case such representations and warranties shall be true
           and as of such date); provided, however, that IHS shall not be deemed
           to be in breach of any such  representations  or warranties where the
           inaccuracies of such  representation and warranties would not, in the
           aggregate,  have a  material  adverse  effect  on  IHS  and  the  IHS
           Subsidiaries, taken as a whole. RoTech shall have been furnished with
           a certificate,  executed by a duly  authorized  officer of IHS, dated
           the Closing Date,  certifying in such detail as RoTech may reasonably
           request as to the fulfillment of the foregoing conditions.

       (C) RoTech   shall  have   received  an  opinion   from  Blass  &  Driggs
           substantially to the effect set forth in Exhibit 9.3(c) hereto.

       (D) The Smith Barney  Opinion shall not have been  adversely  modified or
           withdrawn as of the date of the joint proxy statement.

       (E) All consents, authorizations,  orders and approvals of (or filings or
           registrations  with)  any  governmental  commission,  board  or other
           regulatory body required in connection  with the execution,  delivery
           and  performance  of this Plan of Merger shall have been  obtained or
           made,  except for filing in connection  with the Merger and any other
           documents required to be filed after the Effective Time.

       (F) RoTech shall have received a letter from KMPG Peat Marwick LLP, IHS's
           independent  accountants,  dated the Effective  Time and addressed to
           RoTech, as to such matters reasonably requested by RoTech.

       (G) RoTech  shall have  received  an opinion  from its tax counsel to the
           effect that the Merger will  constitute a  reorganization  within the
           meaning of Section  368(a) of the Internal  Revenue Code of 1986,  as
           amended,  which opinion may be based upon reasonable  representations
           of fact provided by officers of IHS, RoTech, and Merger Sub.


                                      A-33
<PAGE>

                           ARTICLE X: MISCELLANEOUS

       10.1 NONSURVIVAL   OF   REPRESENTATIONS   AND  WARRANTIES.  None  of  the
representations  and  warranties  in  this  Plan  of Merger or in any instrument
delivered pursuant to this Plan of Merger shall survive the Effective Time.

       10.2  NOTICES.  Any  communications  required  or  desired  to  be  given
hereunder  shall be deemed to have been properly  given if sent by hand delivery
or by facsimile and overnight courier or overnight courier to the parties hereto
at the following addresses,  or at such other address as either party may advise
the other in writing from time to time:

If to IHS:


                           Integrated Health Services, Inc.
                           10065 Red Run Boulevard
                           Owings Mills, MD 21117
                           Attention: Taylor Pickett

With copies to:


                           Integrated Health Services, Inc.
                           10065 Red Run Boulevard
                           Owings Mills, MD 21117
                           Attention: Marshall A. Elkins, Esq.

                                        and

                           Integrated Health Services, Inc.
                           10065 Red Run Boulevard
                           Owings Mills, MD 21117
                           Attention: Brian K. Davidson

                                        and

                           Blass & Driggs, Esqs.
                           461 Fifth Avenue, 19th Floor
                           New York, NY 10017
                           Facsimile: (212) 447-5428
                           Attention: Michael S. Blass, Esq.

If to RoTech:


                           RoTech Medical Corporation
                           4506 L.B. McLeod Road, Suite F
                           Orlando, Florida 32811
                           Attention: Stephen P. Griggs


With a copy to:


                           Winderweedle, Haines, Ward & Woodman, P.A.
                           Barnett Bank Center
                           390 North Orange Avenue, 14th Floor
                           Post Office Box 1391
                           Orlando, Florida 32802-1391
                           Attention: Thomas A. Simser, Jr., Esq.


All such  communications  shall be deemed to have been  delivered on the date of
hand  delivery or facsimile or on the next business day following the deposit of
such communication with the overnight courier.


                                      A-34
<PAGE>

       10.3 FURTHER  ASSURANCES. Each party hereby agrees to perform any further
acts  and to execute and deliver any documents which may be reasonably necessary
to carry out the provisions of this Plan of Merger.

     10.4 INDEMNIFICATION.

     (A) IHS and Merger Sub shall  advance legal fees and expenses and indemnify
         current  or former  directors  or  officers  of RoTech  for all acts or
         omissions occurring prior to the Effective Time as provided in RoTech's
         Certificate of Incorporation of bylaws or indemnification agreements in
         effect as of the date hereof,  and such  obligations  shall survive the
         Merger and shall  continue in full force and effect in accordance  with
         their terms. The provisions of this Section 10.4 are intended to be for
         the benefit  of, and shall be  enforceable  by,  each such  indemnified
         party and each such indemnified party's heir and representatives.

     (B) IHS shall  cause to be  maintained  in effect  for a period  ending not
         sooner than the fifth  anniversary of the Effective Time directors' and
         officers' liability insurance providing at least the same coverage with
         respect to RoTech's  officers and directors as the policies  maintained
         on behalf of  directors  and  officers of RoTech as of the date hereof,
         and  containing  terms and conditions  which are no less  advantageous,
         with respect to matters occurring on or prior to the Effective Time (to
         the extent such  insurance is available  with respect to such matters);
         provided  that IHS  shall  not be  obligated  to  provide  any  greater
         officers'  and  directors'  liability  insurance  than  that  generally
         afforded to officers and directors of IHS under policies  maintained by
         IHS with respect to its directors and officers.

       10.5 GOVERNING LAW. This Plan of Merger shall be  interpreted,  construed
and  enforced  in  accordance  with the laws of the State of  Delaware,  applied
without giving effect to any conflicts-of-law principles.

       10.6  "INCLUDING".  The word  "including",  when  following  any  general
statement,  term or matter, shall not be construed to limit such statement, term
or matter to the specific terms or matters as provided immediately following the
word  "including"  or to similar items or matters,  whether or not  non-limiting
language  (such as  "without  limitation",  "but not  limited  to",  or words of
similar  import) is used with  reference to the word  "including" or the similar
items or  matters,  but  rather  shall be deemed to refer to all other  items or
matters that could  reasonably  fall within the broadest  possible  scope of the
general statement, term or matter.

       10.7 "KNOWLEDGE". "To the knowledge", "to the best knowledge, information
and belief",  or any similar phrase shall be deemed to refer to the knowledge of
the Chairman of the Board,  Chief Executive  Officer,  Chief Financial  Officer,
Chief Operating  Officer,  General  Counsel,  or any Executive Vice President or
Senior  Vice  President  of a party  and to  include  the  assurance  that  such
knowledge is based upon a reasonable  investigation,  unless otherwise expressly
provided.

       10.8 "MATERIAL  ADVERSE CHANGE" OR "MATERIAL  ADVERSE EFFECT".  "Material
Adverse Change" or "Material Adverse Effect" means, when used in connection with
RoTech  or IHS,  any  change,  effect,  event  or  occurrence  that  has,  or is
reasonably likely to have,  individually or in the aggregate, a material adverse
impact on the assets, business, financial position revenues, or earnings of such
party and its subsidiaries taken as a whole.

       10.9  CAPTIONS.  The captions or headings in this Plan of Merger are made
for  conveniences  and  general  reference  only and shall not be  construed  to
describe,  define or limit the scope or intent of the provisions of this Plan of
Merger.

       10.10 INTEGRATION  OF EXHIBITS. All Exhibits to the Schedules attached to
this  Plan  of  Merger are integral parts of this Plan of Merger as if fully set
forth herein.

       10.11 ENTIRE  AGREEMENT. This instrument, including all Exhibits attached
hereto  and  the  Confidentiality Agreements contain the entire agreement of the
parties  and  supersede  any and all prior or contemporaneous agreements between
the parties, written or oral, with respect to the transactions con-


                                      A-35
<PAGE>

templated hereby.  Such agreement may not be changed or terminated  orally,  but
may only be changed by an  agreement  in writing  signed by the party or parties
against  whom  enforcement  of  any  waiver,  change,  modification,  extension,
discharge or termination is sought.

       10.12  COUNTERPARTS.  This  Plan of Merger  may be  executed  in  several
counterparts,  each of  which,  when  so  executed,  shall  be  deemed  to be an
original, and such counterparts shall,  together,  constitute and be one and the
same instrument.

       10.13 BINDING EFFECT.  This Plan of Merger shall be binding on, and shall
inure to the benefit of, the parties hereto, and their respective successors and
assigns,  and no other person shall acquire or have any right under or by virtue
of this Plan of Merger.  No party may assign any right or  obligation  hereunder
without the prior written consent of the other parties.

       10.14 NO RULE OF  CONSTRUCTION.  The  parties  agree  that,  because  all
parties participated in negotiating and drafting this Plan of Merger, no rule of
construction  shall  apply to this  Plan of  Merger  which  construes  ambiguous
language  in favor of or  against  any party by reason of that  party's  role in
drafting this Plan of Merger.

                       [SIGNATURES ON THE FOLLOWING PAGE]

                                      A-36
<PAGE>

       IN  WITNESS  WHEREOF,  each of the  parties  hereto  and in the  capacity
indicated  below has executed this  Agreement as of the day and year first above
written.

                                        ROTECH MEDICAL CORPORATION

                                        By: /s/ Stephen P. Griggs
                                        ----------------------------------------

                                        Its: President

                                        INTEGRATED HEALTH SERVICES, INC.

                                        By: /s/ Brian Davidson
                                        ----------------------------------------

                                        Executive Vice President - Development

                                        IHS ACQUISITION XXIV, INC.

                                        By: /s/ Brian Davidson
                                        ----------------------------------------




                                      A-37
<PAGE>

                                                                      APPENDIX B


                                 [      ], 1997


Board of Directors
Integrated Health Services, Inc.
10065 Red Run Boulevard
Owings Mills, MD 21117


Dear Sirs:

     You have requested our opinion as to the fairness from a financial point of
view to the holders of common stock,  $.001 par value per share ("Company Common
Stock"),   of  Integrated   Health   Services,   Inc.  (the  "Company")  of  the
consideration  to be paid by the Company  pursuant to the terms of the Agreement
and Plan of Merger, dated as of July 6, 1997 (the "Agreement"), by and among the
Company, IHS Acquisition XXIV, Inc. ("Merger Sub"), a wholly owned subsidiary of
the Company, and RoTech Medical Corporation  ("RoTech") pursuant to which Merger
Sub will be merged (the "Merger") with and into RoTech.

     Pursuant to the  Agreement,  each  outstanding  share of common stock,  par
value $.0002 per share ("RoTech Common Stock"), of RoTech will be converted into
the right to receive  0.5806  shares (the  "Exchange  Ratio") of Company  Common
Stock.

     In arriving at our opinion,  we have reviewed the Agreement  (including the
Exhibits  thereto).  We also have reviewed  financial and other information that
was publicly  available  or furnished to us by the Company and RoTech  including
information  provided  during  discussions  with their  respective  managements.
Included in the  information  provided  during  discussions  with the respective
managements  were  certain  financial  projections  of  RoTech  for  the  period
beginning  January  1,  1997  and  ending  December  31,  2001  prepared  by the
management of the Company and certain  financial  projections of the Company for
the period  beginning  January 1, 1997 and ending  December 31, 2001 prepared by
the management of the Company.  In addition,  we have compared certain financial
and securities data of the Company and RoTech with various other companies whose
securities are traded in public  markets,  reviewed the historical  stock prices
and trading  volumes of RoTech Common Stock and Company  Common Stock,  reviewed
prices and premiums paid in certain other  business  combinations  and conducted
such  other  financial  studies,   analyses  and  investigations  as  we  deemed
appropriate for purposes of this opinion.

     In rendering our opinion,  we have relied upon and assumed the accuracy and
completeness of all of the financial and other information that was available to
us from  public  sources,  that was  provided to us by the Company and RoTech or
their  respective  representatives,  or that was  otherwise  reviewed  by us. In
particular,  we have relied upon the estimates of the  management of the Company
of the  operating  synergies  achievable  as a result of the Merger and upon our
discussion of such synergies with the management of the Company. With respect to
the  financial  projections  supplied to us, we have assumed that they have been
reasonably  prepared  on the  basis  reflecting  the  best  currently  available
estimates  and  judgments  of the  management  of the  Company  as to the future
operating  and  financial  performance  of the Company  and RoTech.  We have not
assumed any  responsibility  for making any  independent  evaluation of RoTech's
assets or liabilities or for making any  independent  verification of any of the
information reviewed by us.

     Our opinion is necessarily based on economic,  market,  financial and other
conditions as they exist on, and on the information  made available to us as of,
the date of this  letter.  It should be  understood  that,  although  subsequent
developments  may affect this opinion,  we do not have any obligation to update,
revise or reaffirm this opinion.  We are  expressing no opinion as to the prices
at which Company  Common Stock will actually trade at any time. Our opinion does
not constitute a  recommendation  to any shareholder as to how such  shareholder
should vote on the proposed transaction.


                                      B-1
<PAGE>


     Donaldson, Lufkin & Jenrette Securities Corporation ("DLJ"), as part of its
investment banking services, is regularly engaged in the valuation of businesses
and securities in connection with mergers,  acquisitions,  underwritings,  sales
and  distributions  of listed and unlisted  securities,  private  placements and
valuations  for  estate,   corporate  and  other  purposes.  DLJ  has  performed
investment  banking and other  services  for the Company in the past,  including
acting as co-manager  for the Company's  offering of  $450,000,000 9 1/2% Senior
Subordinated  Notes  due  2007  in  May  1997  and  the  Company's  offering  of
$500,000,000 9 1/4% Senior  Subordinated  Notes due 2008 in September  1997, for
which DLJ received usual and customary underwriters' compensation.


     Based upon the foregoing and such other factors as we deem relevant, we are
of the opinion that the Exchange  Ratio is fair to the holders of Company Common
Stock from a financial point of view.

                                        Very truly yours,

                                        DONALDSON, LUFKIN & JENRETTE
                                        SECURITIES CORPORATION



                                        By: ------------------------------------
                                           Vanessa Burgess
                                           Managing Director






                                      B-2
<PAGE>

                                                                      APPENDIX C



                         [SMITH BARNEY INC. LETTERHEAD]


July 6, 1997


The Board of Directors
RoTech Medical Corporation
4506 L.B. McLeod Road
Orlando, Florida 32811


Members of the Board:

You have  requested  our opinion as to the fairness,  from a financial  point of
view,  to  the  holders  of the  common  stock  of  RoTech  Medical  Corporation
("RoTech") of the  consideration  to be received by such holders pursuant to the
terms and  subject  to the  conditions  set forth in the  Agreement  and Plan of
Merger,  dated as of July 6, 1997 (the  "Merger  Agreement"),  among  Integrated
Health  Services,  Inc.  ("IHS"),  IHS  Acquisition  XXIV,  Inc., a wholly owned
subsidiary of IHS ("Merger  Sub"),  and RoTech.  As more fully  described in the
Merger  Agreement,  (i)  Merger  Sub will be merged  with and into  RoTech  (the
"Merger") and (ii) each outstanding share of the common stock, par value $0.0002
per share,  of RoTech (the "RoTech  Common  Stock")  will be converted  into the
right to receive 0.5806 (the  "Exchange  Ratio") of a share of the common stock,
par value $0.001 per share, of IHS (the "IHS Common Stock").

In  arriving  at  our  opinion,  we  reviewed  the  Merger  Agreement  and  held
discussions  with certain senior officers,  directors and other  representatives
and advisors of RoTech and certain senior officers and other representatives and
advisors of IHS  concerning the  businesses,  operations and prospects of RoTech
and  IHS.  We  examined  certain  publicly   available  business  and  financial
information  relating to RoTech and IHS as well as certain  financial  forecasts
and other  information  and data for RoTech and IHS which  were  provided  to or
otherwise  discussed  with us by the  respective  managements of RoTech and IHS,
including information relating to certain strategic implications and operational
benefits  anticipated to result from the Merger. We reviewed the financial terms
of the Merger as set forth in the Merger  Agreement  in relation to, among other
things:  current and  historical  market  prices and  trading  volumes of RoTech
Common Stock and IHS Common Stock;  the  historical  and projected  earnings and
other  operating  data of RoTech and IHS; and the  capitalization  and financial
condition of RoTech and IHS. We considered,  to the extent  publicly  available,
the  financial  terms of certain other similar  transactions  recently  effected
which we  considered  relevant in  evaluating  the Merger and  analyzed  certain
financial, stock market and other publicly available information relating to the
businesses  of other  companies  whose  operations  we  considered  relevant  in
evaluating  those of RoTech and IHS. We also  evaluated  the potential pro forma
financial  impact  of the  Merger  on IHS.  In  addition  to the  foregoing,  we
conducted  such  other  analyses  and  examinations  and  considered  such other
financial,  economic and market criteria as we deemed appropriate in arriving at
our opinion.

In  rendering  our  opinion,  we have  assumed and relied,  without  independent
verification,  upon the accuracy and  completeness  of all  financial  and other
information and data publicly available or furnished to or otherwise reviewed by
or discussed with us. With respect to financial  forecasts and other information
and data provided to or otherwise reviewed by or discussed with us, we have been
advised  by the  managements  of RoTech  and IHS that such  forecasts  and other
information  and data were  reasonably  prepared  on bases  reflecting  the best
currently available estimates and judgments of the managements of RoTech and IHS
as to the  future  financial  performance  of RoTech  and IHS and the  strategic
implications and operational benefits anticipated to result from the Merger.

We have  assumed,  with your  consent,  that the  Merger  will be  treated  as a
tax-free  reorganization  for federal income tax purposes.  Our opinion,  as set
forth  herein,  relates to the  relative  values of RoTech  and IHS.  We are not
expressing  any  opinion as to what the value of the IHS Common  Stock  actually
will


                                      C-1
<PAGE>
The Board of Directors
RoTech Medical Corporation
July 6, 1997
Page 2


be when  issued to RoTech  stockholders  pursuant  to the Merger or the price at
which the IHS Common Stock will trade subsequent to the Merger. We have not made
or been  provided with an  independent  evaluation or appraisal of the assets or
liabilities  (contingent  or  otherwise)  of  RoTech or IHS nor have we made any
physical  inspection of the properties or assets of RoTech or IHS. In connection
with our engagement,  we were requested to approach,  and held discussions with,
third parties to solicit  indications  of interest in a possible  acquisition of
RoTech.  Our opinion is necessarily based upon information  available to us, and
financial,  stock market and other  conditions  and  circumstances  existing and
disclosed to us, as of the date hereof.

Smith Barney has been engaged to render financial advisory services to RoTech in
connection with the proposed Merger and will receive a fee for such services,  a
significant  portion of which is contingent upon the consummation of the Merger.
We also will receive a fee in connection  with the delivery of this opinion.  In
the ordinary course of our business, we and our affiliates may actively trade or
hold the  securities of RoTech and IHS for our own account or for the account of
our customers and, accordingly, may at any time hold a long or short position in
such  securities.  We have in the past provided  investment  banking services to
RoTech and IHS  unrelated to the  proposed  Merger,  for which  services we have
received  compensation.  In addition, we and our affiliates (including Travelers
Group Inc. and its affiliates) may maintain relationships with RoTech and IHS.

Our  advisory  services  and the opinion  expressed  herein are provided for the
information  of the  Board of  Directors  of  RoTech  in its  evaluation  of the
proposed Merger, and our opinion is not intended to be and does not constitute a
recommendation to any stockholder as to how such stockholder  should vote on the
proposed Merger.  Our opinion may not be published or otherwise used or referred
to, nor shall any public  reference to Smith  Barney be made,  without our prior
written consent.

Based upon and subject to the foregoing,  our experience as investment  bankers,
our work as described above and other factors we deemed relevant,  we are of the
opinion  that,  as of the date  hereof,  the  Exchange  Ratio  is  fair,  from a
financial point of view, to the holders of RoTech Common Stock.


Very truly yours,


SMITH BARNEY INC.

                                       C-2

<PAGE>

                                    PART II
                    INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS

     Under the Delaware General  Corporation Law (the "DGCL"), a corporation may
include  provisions in its  certificate of  incorporation  that will relieve its
directors  of monetary  liability  for breaches of their  fiduciary  duty to the
corporation,  except  under  certain  circumstances,  including  a breach of the
director's duty of loyalty,  acts or omissions of the director not in good faith
or which  involve  intentional  misconduct  or a knowing  violation  of law, the
approval  of an improper  payment of a dividend  or an improper  purchase by the
corporation  of stock or any  transaction  from  which the  director  derived an
improper personal benefit. IHS' Third Restated Certificate of Incorporation,  as
amended,  provides that IHS' directors are not liable to IHS or its stockholders
for  monetary  damages  for  breach  of their  fiduciary  duty,  subject  to the
described exceptions specified by the DGCL.

     Section 145 of the DGCL grants to IHS the power to  indemnify  each officer
and director of IHS against  liabilities and expenses  incurred by reason of the
fact that he is or was an officer or  director  of IHS if he acted in good faith
and in a manner  he  reasonably  believed  to be in or not  opposed  to the best
interests of IHS and, with respect to any criminal action or proceeding,  had no
reasonable  cause to believe  his  conduct  was  unlawful.  IHS' Third  Restated
Certificate of Incorporation,  as amended, and By-laws, as amended,  provide for
indemnification  of each  officer  and  director  of IHS to the  fullest  extent
permitted by the DGCL. In addition,  IHS has entered into  indemnity  agreements
with its  directors  and  executive  officers,  a form of which is  included  as
Exhibit  10.72  to IHS'  Registration  Statement  on  Form  S-1,  No.  33-39339,
effective March 31, 1992.

     Section  145  of the  DGCL  also  empowers  IHS to  purchase  and  maintain
insurance  on behalf of any person who is or was an officer or  director  of IHS
against  liability  asserted  against or incurred  by him in any such  capacity,
whether or not IHS would have the power to  indemnify  such  officer or director
against such  liability  under the  provisions of Section 145. IHS has purchased
and maintains a directors' and officers' liability policy for such purposes.

ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.

     (a) Exhibits.   The   following   exhibits   are  filed  as  part  of  this
Registration Statement.




<TABLE>
<CAPTION>
 EXHIBIT
 NUMBER  DESCRIPTION
- -------- ------------------------------------------------------------------------------------------------------------
<S>      <C>
2        Agreement and Plan of Merger entered into as of July 19, 1997, among RoTech Medical Corporation, Inte-
         grated Health Services, Inc. and IHS Acquisition XXIV, Inc. (attached to this Registration Statement as Ap-
         pendix A to the Joint Proxy Statement/Prospectus) is hereby incorporated herein by reference.
5        Opinion of Fulbright & Jaworski L.L.P. re legality.
8.1      Opinion of Winderweedle, Haines, Ward & Woodman, P.A. re tax matters.
8.2      Opinion of Fulbright & Jaworski L.L.P. re tax matters.
10.1     Form of Employment Agreement between Stephen P. Griggs, RoTech Medical Corporation and Integrated
         Health Services, Inc.
10.2     Form of Severance and Non-competition Agreement between William P. Kennedy, RoTech Medical Corpo-
         ration and Integrated Health Services, Inc.
10.3     Form of Severance and Non-competition Agreement between Rebecca Irish, RoTech Medical Corporation
         and Integrated Health Services, Inc.
10.4     Form of Excise Tax Agreement between Stephen P. Griggs, RoTech Medical Corporation and Integrated
         Health Services, Inc.
10.5     Form of Excise Tax Agreement between William P. Kennedy, RoTech Medical Corporation and Integrated
         Health Services, Inc.
10.6     Form of Excise Tax Agreement between Rebecca Irish, RoTech Medical Corporation and Integrated Health
         Services, Inc.
23.1     Consent of KPMG Peat Marwick LLP.
23.2     Consent of Deloitte & Touche LLP.
23.3     Consents of Fulbright & Jaworski L.L.P. (included in Exhibits 5 and 8.2).
23.4     Consent of Winderweedle, Haines, Ward & Woodman, P.A. (included in Exhibit 8.1).
24       Power of Attorney (included in signature page).
99.1     Form of IHS Proxy.
99.2     Form of RoTech Proxy.
</TABLE>



                                      II-1
<PAGE>

     (b) Financial Statement Schedules.

     No financial statement schedules are required to be filed herewith.

     (c) The opinion of Donaldson,  Lufkin & Jenrette Securities  Corporation is
included as Appendix B to the Joint Proxy Statement Prospectus contained in Part
I of this Registration  Statement.  The opinion of Smith Barney Inc. is included
as Appendix C to the Joint  Proxy  Statement/Prospectus  contained  in Part I of
this Registration Statement.

ITEM 22. UNDERTAKINGS.

     (a) (i) The undersigned  registrant hereby undertakes that, for purposes of
determining  any liability  under the Securities Act of 1933, each filing of the
registrant's  annual  report  pursuant to Section  13(a) or Section 15(d) of the
Securities  Exchange  Act of 1934  (and,  where  applicable,  each  filing of an
employee  benefit  plan's  annual  report  pursuant  to  Section  15(d)  of  the
Securities  Exchange  Act of 1934)  that is  incorporated  by  reference  in the
registration  statement  shall  be  deemed  to be a new  registration  statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

     (ii) (1) The  undersigned  registrant  hereby  undertakes as follows:  that
prior to any public  reoffering of the securities  registered  hereunder through
use of a  prospectus  which  is a part of this  registration  statement,  by any
person or party who is deemed to be an  underwriter  within the  meaning of Rule
145(c),  the issuer undertakes that such reoffering  prospectus will contain the
information  called  for by the  applicable  registration  form with  respect to
reofferings  by  persons  who may be deemed  underwriters,  in  addition  to the
information called for by the other items of the applicable form.

     (2) The  registrant  undertakes  that  every  prospectus  (i) that is filed
pursuant to paragraph (1) immediately  preceding,  or (ii) that purports to meet
the  requirements of Section  10(a)(3) of the Act and is used in connection with
an offering  of  securities  subject to Rule 415,  will be filed as a part of an
amendment  to the  registration  statement  and  will  not be  used  until  such
amendment is  effective,  and that,  for purposes of  determining  any liability
under the Securities Act of 1933,  each such  post-effective  amendment shall be
deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

     (iii)  Insofar  as  indemnification   for  liabilities  arising  under  the
Securities Act of 1933 may be permitted to directors,  officers and  controlling
persons of the registrant  pursuant to the foregoing  provisions,  or otherwise,
the  registrant  has been  advised  that in the  opinion of the  Securities  and
Exchange  Commission such  indemnification is against public policy as expressed
in the Act and is,  therefore,  unenforceable.  In the  event  that a claim  for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
registrant of expenses  incurred or paid by a director,  officer or  controlling
person of the  registrant  in the  successful  defense  of any  action,  suit or
proceeding)  is  asserted by such  director,  officer or  controlling  person in
connection with the securities being registered,  the registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.

     (b) The undersigned registrant hereby undertakes to respond to requests for
information  that is incorporated  by reference into the prospectus  pursuant to
Items 4, 10(b),  11, or 13 of this form,  within one  business day of receipt of
such  request,  and to send the  incorporated  documents  by first class mail or
other equally  prompt means.  This includes  information  contained in documents
filed subsequent to the effective date of the registration statement through the
date of responding to the request.

     (c) The undersigned  registrant  hereby  undertakes to supply by means of a
post-effective  amendment  all  information  concerning a  transaction,  and the
company  being  acquired  involved  therein,  that  was not the  subject  of and
included in the registration statement when it became effective.


                                      II-2
<PAGE>

                                  SIGNATURES



     Pursuant to the  requirements of the Securities Act of 1933, the Registrant
has duly caused this  Registration  Statement  to be signed on its behalf by the
undersigned,  thereunto duly authorized,  in the City of Owings Mills,  State of
Maryland, on the 17th day of September, 1997.



                                        INTEGRATED HEALTH SERVICES, INC.


                                        By: /s/ Robert N. Elkins

                                           ------------------------------------
                                           Robert N. Elkins
                                           Chairman of the Board and
                                           Chief Executive Officer

     KNOW ALL MEN BY THESE PRESENTS,  that each person whose  signature  appears
below  constitutes  and  appoints  Robert N.  Elkins,  Lawrence  P. Cirka and W.
Bradley Bennett,  jointly and severally,  his true and lawful  attorneys-in-fact
and agents, each with full power of substitution and resubstitution, for him and
in his name,  place and stead,  in any and all  capacities,  to sign any and all
amendments (including post-effective amendments) to this registration statement,
and to file the same, with exhibits  thereto,  and other documents in connection
therewith,  with the  Securities  and Exchange  Commission,  granting  unto said
attorneys-in-fact  and agents,  and each of them, full power and authority to do
and perform  each and every act and thing  requisite  or necessary to be done in
and about the  premises,  as fully to all  intents  and  purposes as he might or
could do in  person,  hereby  ratifying  and  confirming  all that  each of said
attorneys-in-fact and agents, or his substitute or substitutes,  may lawfully do
or cause to be done by virtue hereof.

     Pursuant  to  the   requirements  of  the  Securities  Act  of  1933,  this
Registration  Statement  has been signed below by the  following  persons in the
capacities and on the dates indicated:


<TABLE>
<CAPTION>
          SIGNATURE                               TITLE                           DATE
- -----------------------------     -------------------------------------     -----------------
<S>                               <C>                                       <C>
      /s/ Robert N. Elkins        Chairman of the Board and Chief           September 17, 1997
- -----------------------------     Executive Officer (Principal Executive
         (Robert N. Elkins)       Officer)


      /s/ Lawrence P. Cirka       President and Director                    September 17, 1997
- -----------------------------
       (Lawrence P. Cirka)


     /s/ Edwin M. Crawford        Director                                  September 17, 1997
- -----------------------------
      (Edwin M. Crawford)


                                  Director                                                    
- -----------------------------
       (Kenneth M. Mazik)


     /s/ Robert A. Mitchell       Director                                  September 17, 1997
- -----------------------------
      (Robert A. Mitchell)


                                  Director                                                    
- -----------------------------
   (Charles W. Newhall, III)
</TABLE>

                                      II-3

<PAGE>



<TABLE>
<CAPTION>
         SIGNATURE                            TITLE                               DATE
- -----------------------------   ------------------------------------        -------------------
<S>                             <C>                                         <C>
                                  Director                                                   
- -----------------------------
    (Timothy F. Nicholson)

     /s/ John L. Silverman        Director                                 September 17, 1997
- -----------------------------
      (John L. Silverman)

                                  Director                                                   
- -----------------------------
      (George H. Strong)

    /s/ W. Bradley Bennett        Executive Vice President - Chief         September 17, 1997
- -----------------------------     Accounting Officer (Principal
      (W. Bradley Bennett)        Accounting Officer)
                                  
    /s/ Eleanor C. Harding        Executive Vice President - Finance       September 17, 1997
- -------------------------         (Principal Financial Officer)
     (Eleanor C. Harding)



                                      II-4

</TABLE>


                              FULBRIGHT & JAWORSKI
                                     L.L.P.
                   A REGISTERED LIMITED LIABILITY PARTNERSHIP
                                666 FIFTH AVENUE
                         NEW YORK, NEW YORK 10103-3198

                                                                   HOUSTON
                                                               WASHINGTON, D.C.
                                                                   AUSTIN
                                                                 SAN ANTONIO
                                                                   DALLAS
  TELEPHONE: 212/318-3000                                         NEW YORK
  FACSIMILE: 212/752-5958                                        LOS ANGELES
                                                                   LONDON
                                                                  HONG KONG
WRITER'S DIRECT DIAL NUMBER:

                                 September 17, 1997



Integrated Health Services, Inc.
10065 Red Run Boulevard
Owings Mills, Maryland 21117

Dear Sirs:

         We refer to the Registration  Statement on Form S-4 (the  "Registration
Statement") to be filed by Integrated Health Services, Inc. (the "Company") with
the  Securities  and Exchange  Commission  under the  Securities Act of 1933, as
amended,  relating to up to  19,625,323  shares (the  "Shares") of Common Stock,
$.001 par value per share, of the Company  proposed to be issued pursuant to the
Agreement  and Plan of  Merger,  dated  as of July 6,  1997 by and  between  the
Company,  IHS Acquisition XXIV, Inc. and RoTech Medical Corporation (the "Merger
Agreement").

         We have examined such corporate  records,  documents and such questions
of law as we have  considered  necessary or appropriate for the purposes of this
opinion.  In our  examination  of the foregoing  documents,  we have assumed the
genuineness of all signatures and the authenticity of all documents submitted to
us as originals, the conformity to original documents of all documents submitted
to us as certified or photostatic  copies, and the authenticity of the originals
of such latter documents.

         Based on the  foregoing,  we advise you that in our  opinion the Shares
have been duly and validly  authorized  for issuance by the Company,  and,  when
issued in  accordance  with the terms of the Merger  Agreement,  will be legally
issued, fully paid and non-assessable.

         We  consent  to  the  filing  of  this  opinion  as an  exhibit  to the
Registration  Statement and the reference to this firm under the caption  "Legal
Matters" in the


<PAGE>


September 17, 1997
Page 2


Joint Proxy  Statement/Prospectus  contained therein.  This consent is not to be
construed as an admission  that we are a person whose  consent is required to be
filed with the Registration Statement under the provisions of the Securities Act
of 1933.


                                               Very truly yours,

                                               /s/ Fulbright & Jaworski L.L.P.

             [WINDERWEEDLE, HAINES, WARD & WOODMAN, P.A. LETTERHEAD]




                               September 17, 1997




RoTech Medical Corporation
4506 L.B. McLeod Road
Orlando, Florida  32811

Ladies and Gentlemen:

     This opinion is being  delivered in connection  with the Agreement and Plan
of  Merger  ("Merger  Agreement"),  dated  as of  July  6,  1997,  by and  among
Integrated  Health  Services,  Inc.  ("IHS"),  IHS Acquisition  XXIV, Inc. ("IHS
Sub"),  and  RoTech  Medical  Corporation  ("RoTech").  Pursuant  to the  Merger
Agreement,  IHS Sub will merge with and into RoTech (the  "Merger"),  and RoTech
will be the  surviving  corporation.  This  opinion  is issued  with  respect to
certain federal income tax consequences of the Merger. Reference to such opinion
is made in the Proxy  Statement/Prospectus of IHS and RoTech dated September 17,
1997.

     All  capitalized  terms  not  otherwise  defined  herein  have the  meaning
assigned to them in the Merger  Agreement or the Proxy  Statement/Prospectus  of
IHS and RoTech. All section references,  unless otherwise indicated,  are to the
Internal Revenue Code of 1986, as amended (the "Code").

     We have acted as legal counsel to RoTech in connection with the Merger.  As
such, and for the purpose of rendering  this opinion,  we have examined (or will
examine  on or  prior  to the  Effective  Time  of the  Merger)  and  with  your
permission   are  relying  (or  will  rely)  upon   (without   any   independent
investigation or review thereof) the truth and accuracy,  at all relevant times,
of the statements,  covenants,  representations and warranties  contained in the
following documents:

     1. The Merger Agreement;

     2. The Proxy  Statement/Prospectus  of IHS and RoTech dated  September  17,
1997;


<PAGE>


RoTech Medical Corporation
September 17, 1997
Page 2




     3.  Representations made to us by IHS and IHS Sub in a letter reproduced as
Attachment A hereto;

     4.  Representations  made  to  us  by  RoTech  in a  letter  reproduced  as
Attachment B hereto;

     5. Such other documents, records and matters of law as in our judgment were
necessary or appropriate.

     We have relied, with your permission, solely on the representations of IHS,
IHS Sub and RoTech  contained in the letters  referenced  at  paragraphs 3 and 4
above as to the matters set forth therein.

     In connection  with  rendering this opinion,  we have assumed  (without any
independent  investigation or review thereof) that original documents (including
signatures) are authentic,  that documents  submitted to us as copies conform to
the  original  documents,  and that there has been (or will be by the  Effective
Time of the Merger)  due  execution  and  delivery  of all  documents  where due
execution and delivery are prerequisites to the effectiveness thereof.

     Based  on our  examination  of  the  foregoing  items  and  subject  to the
assumptions, exceptions, limitations and qualifications set forth herein, we are
of the opinion that, for federal income tax purposes:

     1. The Merger will qualify as a  reorganization  pursuant to Section 368(a)
of the Code;

     2. No gain or loss  will be  recognized  by  RoTech  as the  result  of the
consummation of the Merger;

     3. No gain or loss  will be  recognized  by a RoTech  stockholder  upon the
exchange of the shares of RoTech Stock for shares of IHS Common  Stock  pursuant
to the  Merger,  except on the  receipt  of cash in lieu of a  fractional  share
interest in IHS Common Stock; and

     4. A RoTech stockholder who receives cash in lieu of a fractional  interest
in shares of IHS Common  Stock will be treated as if the  fractional  share were
distributed  as  part  of the  exchange  and  then  as  having  received  a cash
distribution  in redemption of such  fractional  share,  which would be taxed as
provided in Section 302 of the Code.



<PAGE>


RoTech Medical Corporation
September 17, 1997
Page 3



     In addition to the assumptions set forth above,  this opinion is subject to
the exceptions, limitations and qualifications set forth below.

     1. This opinion  represents  and is based upon our best judgment  regarding
the  application  of federal  income tax laws arising  under the Code,  existing
judicial  decisions,   administrative  regulations  and  published  rulings  and
procedures.  Our opinion is not binding upon the Internal Revenue Service or the
courts,  and we cannot provide  assurance that the Internal Revenue Service will
not assert a contrary  position.  Furthermore,  we cannot provide assurance that
future  legislative,  judicial or administrative  changes would not, on either a
prospective  or  retroactive  basis,   adversely  affect  the  accuracy  of  the
conclusions  stated herein.  Moveover,  we undertake no responsibility to advise
you of any new developments in the application or  interpretation of the federal
income tax laws as they might relate to this opinion.

     2. This  opinion  addresses  only  whether  the  Merger  will  qualify as a
reorganization  under Section 368(a) of the Code and the tax consequences listed
above. The opinion does not address any other federal,  state,  local or foreign
tax consequences that may result from the Merger or any other transaction.

     3. No opinion is expressed as to any  transaction  other than the Merger as
described  in the  Merger  Agreement.  Moreover,  we have  assumed  that all the
transactions  described in the Merger Agreement have been or will be consummated
in  accordance  with the terms of such Merger  Agreement  and without  waiver or
breach of any material  provision  thereof and that all of the  representations,
warranties, statements and assumptions upon which we have relied remain true and
accurate at all  relevant  times.  Any change after the date hereof in the facts
and   circumstances   surrounding   the  Merger,   or  any   inaccuracy  in  the
representations,  warranties,  statements  and  assumptions  upon  which we have
relied may affect the continuing  validity of the opinions set forth herein.  We
assume no responsibility to inform you of any such change or inaccuracy that may
occur or come to our attention.

     4. This opinion has been delivered to you for the purpose of satisfying the
conditions  set forth in Section  7.18 of the Merger  Agreement  and is intended
solely for your  benefit.  It may not be relied upon for any other purpose or by
any other person or entity, and may not be made available to any other person or
entity,  without  our  prior  written  consent   Notwithstanding  the  preceding
sentence,  we hereby  consent to the filing of this opinion with the  Securities
and Exchange Commission as an exhibit to the registration  statement on Form S-4
of IHS, of which the Proxy


<PAGE>


RoTech Medical Corporation
September 17, 1997
Page 4


Statement/Prospectus  is also a part, and further consent to the use of our name
whenever appearing in such registration statement, and any amendments thereto.


                                                  Very truly yours,

                                                  WINDERWEEDLE, HAINES, WARD
                                                    & WOODMAN, P.A.


                                                  By:/s/ W. Graham White
                                                     ---------------------------
                                                     W. Graham White

<PAGE>

                                                                    ATTACHMENT A


                        INTEGRATED HEALTH SERVICES, INC.
                             10065 RED RUN BOULEVARD
                             OWINGS MILLS, MD 21117


                               September 17, 1997


Fulbright & Jaworski L.L.P.
666 Fifth Avenue
New York, New York 10103

Winderweedle, Haines, Ward
         & Woodman, P.A.
Post Office Box 880
Winter Park, Florida 32790-0880


     Re:  Merger of IHS  Acquisition  XXIV,  Inc., a wholly-owned  subsidiary of
          Integrated Health Services, Inc., into Rotech Medical Corporation

Gentlemen:

     You have requested that we represent  certain  matters to you in connection
with the opinion that you are rendering  with respect to certain  federal income
tax  consequences  of the merger (the "Merger") of IHS  Acquisition  XXIV,  Inc.
("IHS Sub"),  a  wholly-owned  subsidiary of Integrated  Health  Services,  Inc.
("IHS") with and into Rotech Medical Corporation  ("Rotech").  We recognize that
you will rely on this  certificate in rendering your opinion pursuant to section
7.18 of the Agreement and Plan of Merger,  dated as of July 6, 1997 by and among
IHS, IHS Sub, and Rotech (the "Merger  Agreement")  and in connection  with your
description  of certain  federal  income tax  consequences  of the Merger in the
Proxy  Statement/Prospectus  of IHS and Rotech. Unless otherwise specified,  the
capitalized  terms used herein are defined in the Merger  Agreement or the Proxy
Statement/Prospectus of IHS and Rotech.

             In accordance  with your request,  we hereby  represent to you that
the  following  facts  are  now  true  and  will  continue  to be true as of the
Effective Time of the Merger:

             1. The Merger is being  undertaken  to enhance the  business of the
IHS and the IHS Sub and for other good business purposes of the IHS.

             2. At the  Effective  Time of the Merger,  the fair market value of
the IHS stock plus cash in lieu of  fractional  shares  received  by each Rotech
stockholder will be  approximately  equal to the fair market value of the Rotech
stock surrendered in exchange therefor.



<PAGE>




             3. Prior to the  Merger,  IHS will be in  "Control"  of IHS Sub. As
used in this letter, "Control" means the direct ownership of stock possessing at
least eighty percent (80%) of the total combined  voting power of all classes of
stock  entitled to vote and at least eighty percent (80%) of the total number of
shares  of each  other  class of  stock  of the  corporation.  For  purposes  of
determining  Control,  a person or entity shall not be  considered to own voting
stock if rights to vote such stock (or to  restrict  or  otherwise  control  the
voting of such stock) are held by a third party (including a voting trust) other
than an agent of such person or entity.

             4. IHS has no plan or intention  to redeem or  otherwise  reacquire
any of its stock issued pursuant to the Merger.

             5.  Following the Merger,  Rotech will hold at least ninety percent
(90%) of the fair  market  value of IHS Sub's net  assets  and at least  seventy
percent  (70%)  of  the  fair  market  value  of IHS  Sub's  gross  assets  held
immediately  prior to the Merger  (other  than stock of IHS  distributed  in the
Merger).  For the purpose of  determining  the  percentages of the net and gross
assets held immediately  before the Merger,  assets  transferred from IHS to IHS
Sub in pursuance of the plan of reorganization are not taken into account. Thus,
the money transferred from IHS to IHS Sub to be used for the following  purposes
is  not  taken  into  account:  (i)  to  pay  additional  consideration  to  the
stockholders  of  Rotech;  (ii)  to  pay  creditors  of  Rotech;  (iii)  to  pay
reorganization  expenses;  or (iv) to enable  IHS Sub to satisfy  state  minimum
capitalization  requirements  (where the money is  returned  to the  controlling
corporation as part of the transaction).

             6. Except for transfers  described in Section  368(a)(2)(C)  of the
Code, IHS has no plan or intention to liquidate  Rotech; to merge Rotech with or
into  another  corporation  including  IHS or any of its  affiliates;  to  sell,
distribute  or  otherwise  dispose of the capital  stock of Rotech;  or to cause
Rotech to sell or otherwise dispose of any of its assets or of any of the assets
acquired from IHS Sub,  except for  dispositions  made in the ordinary course of
business or transfers of assets to a corporation Controlled by Rotech.

             7. IHS Sub will have no liabilities  assumed by Rotech and will not
transfer to Rotech any assets subject to liabilities in the Merger.

             8.  Following  the Merger,  IHS will cause  Rotech to continue  the
historic business Rotech was conducting  immediately  before the Merger or cause
Rotech to use a significant portion of the historic business assets of Rotech in
a business, within the meaning of Treasury Regulation Section 1.368-1(d).

             9. IHS and IHS Sub will pay their  expenses,  if any,  incurred  in
connection  with the Merger,  and neither IHS nor IHS Sub will pay the expenses,
if any,  incurred in connection with the Merger by Rotech or the stockholders of
Rotech.



                                       -2-


<PAGE>



             10.  IHS  has no  plan  or  intention  to  cause  Rotech  to  issue
additional  shares of Rotech  stock  after the Merger  that would  result in IHS
losing Control of Rotech.

             11.  Neither IHS, IHS Sub nor any affiliate of IHS or IHS Sub owns,
or has owned during the past five (5) years, directly or indirectly,  any shares
of Rotech stock or the right to acquire or vote any such stock.

             12.  Neither  IHS nor IHS Sub is, and will not be at the  Effective
Time of the  Merger,  an  "investment  company"  within  the  meaning of Section
368(a)(2)(F)(iii) and (iv) of the Code.

             13. No  stockholder of Rotech is acting (or has acted) as agent for
IHS or IHS Sub in  connection  with the  Merger  or the  approval  thereof;  and
neither  IHS  nor  IHS  Sub  will  reimburse  (or  has  reimbursed)  any  Rotech
stockholder  for Rotech stock such  stockholder  may have purchased or for other
obligations such stockholder may have incurred as agent for IHS or IHS Sub.

             14. In the Merger,  shares of Rotech stock representing  Control of
Rotech  will be  exchanged  for  voting  stock  of  IHS.  For  purposes  of this
representation,  shares of Rotech  stock  exchanged  for cash or other  property
originating  with IHS or a direct or indirect  subsidiary of IHS will be treated
as outstanding Rotech stock on the Effective Date of the Merger.

             15. No shares of IHS Sub have been or will be used as consideration
for or issued to stockholders of Rotech pursuant to the Merger.

             16. There is no  intercorporate  indebtedness  existing between IHS
and Rotech or between IHS Sub and Rotech that was issued,  acquired,  or will be
settled at a discount as a result of the Merger.

             17. The payment of cash in lieu of  fractional  shares of IHS stock
is solely for the purpose of avoiding  the expense and  inconvenience  to IHS of
issuing  fractional  shares  and does  not  represent  separately  bargained-for
consideration.

             18.  The terms of the  Merger  Agreement  and all other  agreements
entered  into  in  connection   therewith  were  the  product  of   arm's-length
negotiations.

             19. None of the shares of IHS stock received by any  shareholder of
Rotech  who  is  (or  was)  a  service  provider  to  Rotech  will  be  separate
consideration  for, or  allocable  to, past or future  services  (including  any
employment agreement or any covenants not to compete).

             20. The Merger Agreement represents the full and complete agreement
between IHS,  IHS Sub and Rotech  regarding  the Merger,  and there are no other
agreements regarding the Merger.


                                       -3-


<PAGE>



             21. The Merger will be consummated in accordance  with the material
terms of the Merger  Agreement  and none of the  material  terms and  conditions
therein have been waived or modified and neither IHS nor IHS Sub has any plan or
intention to waive or modify any such material condition.

             22.  Each  of the  representations  made  by IHS and IHS Sub in the
Merger  Agreement,  the  Proxy  Statement/Prospectus,  and any  other  documents
associated therewith is true and accurate, and the facts relating to the Merger,
as such facts are described in the Proxy  Statement/Prospectus,  are, insofar as
such  facts  pertain  to IHS and IHS Sub,  true,  correct  and  complete  in all
material respects.

             23.   IHS  and  IHS  Sub  are   authorized   to  make  all  of  the
representations set forth herein.

             24. IHS is,  and at the  Effective  Time of the  Merger  will be, a
corporation duly organized under the laws of the State of Delaware.  IHS Sub is,
and at the Effective  Time of the Merger will be, a corporation  duly  organized
under the laws of the State of Florida.

             IHS and  IHS Sub  will  promptly  and  timely  notify  Fulbright  &
Jaworski  L.L.P.  and Rotech if, after  signing this letter,  IHS or IHS Sub has
reason to  believe  that (i) any of the facts  described  herein or in the Proxy
Statement/Prospectus  or (ii) any of the representations made in this letter are
untrue, incorrect or incomplete in any respect.

             In rendering your opinion, you have our permission to attach a copy
of this letter to your written opinion.

                                               Very truly yours,

                                               INTEGRATED HEALTH SERVICES, INC.,
                                               a Delaware corporation


                                               By:/s/ Mark Fulchino
                                                  ------------------------------
                                               Title:Vice President - Tax
                                                     ---------------------------

                                               IHS ACQUISITION XXIV, INC.,
                                               a Florida corporation


                                               By:/s/ Mark Fulchino
                                                  ------------------------------
                                               Title:Vice President - Tax
                                                     ---------------------------

                                       -4-

<PAGE>

                                                                    ATTACHMENT B

                           RoTech Medical Corporation
                         4506 LB. Macleod Road, Suite F
                                Orlando, FL 32811


                               September 17, 1997


Winderweedle, Haines, Ward
   & Woodman, P.A.
Post Office Box 880
Winter Park, Florida  32790-0880

Fulbright & Jaworski, L.L.P.
666 Fifth Avenue
New York, New York   10103

         Re:      Agreement and Plan of Merger by and among Integrated
                  Health Services, Inc., IHS Acquisition XXIV, Inc., and
                  RoTech Medical Corporation

Gentlemen:

     You have requested that we represent  certain  matters to you in connection
with the opinion that you are rendering  with respect to certain  federal income
tax  consequences  of the merger (the "Merger") of IHS  Acquisition  XXIV,  Inc.
("IHS Sub"),  a  wholly-owned  subsidiary of Integrated  Health  Services,  Inc.
("IHS") with and into RoTech Medical Corporation  ("RoTech").  We recognize that
you will rely on this  certificate in rendering your opinion pursuant to Section
7.18 of the Agreement and Plan of Merger, dated as of July 6, 1997, by and among
IHS, IHS Sub, and RoTech (the "Merger  Agreement")  and in connection  with your
description  of certain  federal  income tax  consequences  of the Merger in the
Proxy  Statement/Prospectus  of IHS and RoTech. Unless otherwise specified,  the
capitalized  terms used herein are defined in the Merger  Agreement or the Proxy
Statement/Prospectus of IHS and RoTech.

     In  accordance  with  your  request,  we hereby  represent  to you that the
following  facts are now true and will  continue to be true as of the  Effective
Time of the Merger:

     1. The Merger is being undertaken to enhance the business of RoTech and for
other good business purposes of RoTech.

     2.  After due  inquiry  (except  that no inquiry  was made with  respect to
Putnam  Investments,  Inc.),  there is no plan or  intention  on the part of the
stockholders of RoTech who own five percent (5%)


<PAGE>



September 17, 1997
Page -2-


or more of the RoTech stock,  and to the best of the knowledge of the management
of  RoTech,  there  is no  plan  or  intention  on the  part  of  the  remaining
stockholders of RoTech to sell,  exchange,  or otherwise  dispose of a number of
shares  of IHS stock  received  in the  Merger  that  would  reduce  the  RoTech
stockholders'  ownership of the IHS stock to a number of shares  having a value,
as of the Effective Time of the Merger,  of less than fifty percent (50%) of the
aggregate fair market value, immediately prior to the Merger, of all outstanding
shares of RoTech stock.  For purposes of this  paragraph,  fractional  shares of
RoTech  stock that are deemed to be received in the Merger in exchange  for cash
will be treated  as  outstanding  RoTech  stock  exchanged  for IHS stock in the
Merger and then  disposed of pursuant to a plan.  Additionally,  for purposes of
this  paragraph,  shares of RoTech  stock and shares of IHS stock held by RoTech
stockholders  and  otherwise  sold,  redeemed  or  disposed  of  prior to and in
contemplation  of the Merger or  subsequent  to the Merger  shall be  considered
shares of RoTech stock exchange for IHS stock in the Merger and then disposed of
pursuant to a plan.

     3. The Merger will be consummated in compliance  with the material terms of
the Merger Agreement and none of the material terms and conditions  therein have
been waived or modified  and RoTech has no plan or  intention to waive or modify
further any such material condition.

     4. At the  Effective  Time of the Merger,  the fair market value of the IHS
common stock and other  consideration  to be received by RoTech  stockholders in
the Merger will be  approximately  equal to the fair market  value of the RoTech
stock surrendered by such stockholders in exchange therefor.

     5. Immediately  after the Merger,  RoTech will hold at least ninety percent
(90%) of the fair market  value of its net assets and at least  seventy  percent
(70%) of the fair market value of its gross assets held immediately prior to the
Merger.  For the purpose of  determining  the  percentages  of the net and gross
assets held immediately  before the Merger, the following assets will be treated
as  property  held  immediately  prior  to the  Merger  but not  held by  RoTech
following  the  Merger:  (i)  assets  disposed  of  prior to the  Merger  and in
contemplation thereof (including without limitation any asset disposed of, other
than in the ordinary  course of business,  pursuant to a plan or intent existing
during the period ending on the Effective  Time of the Merger and beginning with
the commencement of negotiations (whether formal or informal) with IHS regarding
the Merger (the  "Pre-Merger  Period")),  (ii)  assets  used to pay  expenses or
liabilities incurred by RoTech or its shareholders in connection with the Merger
and (iii) assets used to


<PAGE>



September 17, 1997
Page -3-


make distributions,  redemptions or other payments in respect to stock or rights
to acquire such stock (including payments treated as such for tax purposes) that
are made in contemplation of the Merger or during the Pre-Merger  Period or that
are related thereto (other than regular, normal dividends).

     6. The business conducted by RoTech immediately prior to the Merger will be
its historic business.

     7. In the Merger,  shares of RoTech  common stock  representing  Control of
RoTech will be exchanged  solely for voting common stock of IHS. As used in this
letter, "Control" means the direct ownership of stock possessing at least eighty
percent  (80%)  of the  total  combined  voting  power of all  classes  of stock
entitled to vote and at least eighty percent (80%) of the total number of shares
of each other class of stock of the  corporation.  For  purposes of  determining
Control,  a person or entity  shall not be  considered  to own  voting  stock if
rights to vote such stock (or to  restrict  or  otherwise  control the voting of
such stock) are held by a third party  (including a voting  trust) other than an
agent of such person or entity. For purposes of this  representation,  shares of
RoTech common stock  exchanged for cash or other property  originating  with IHS
will be treated as outstanding RoTech stock on the Effective Date of the Merger.

     8. RoTech has no plan or intention to issue additional  shares of its stock
that would result in IHS losing Control of RoTech.

     9.  RoTech  and the  stockholders  of  RoTech  will  pay  their  respective
expenses,  if any,  incurred in connection with the Merger.  RoTech will not pay
any of the  expenses,  if any,  of IHS,  IHS Sub or the  stockholders  of RoTech
incurred in connection with the Merger.

     10. There is no intercorporate indebtedness existing between IHS and RoTech
or between IHS Sub and RoTech that was issued, acquired, or will be settled at a
discount as a result of the Merger.

     11. At the  Effective  Time of the  Merger,  the fair  market  value of the
assets  of  RoTech  will  exceed  the  sum of  its  liabilities  (including  any
liabilities to which its assets are subject).

     12. No stock of IHS Sub will be issued in the Merger.




<PAGE>



September 17, 1997
Page -4-


     13. RoTech is not and will not be at the Effective  Time of the Merger,  an
"investment  company"  as defined in Section  368(a)(2)(F)(iii)  and (iv) of the
Code.

     14.  RoTech is not,  and will not be at the  Effective  Time of the Merger,
under the  jurisdiction  of a court in a Title 11 or  similar  case  within  the
meaning of Section 368(a)(3)(A) of the Code.

     15. RoTech is a corporation  duly organized,  validly  existing and in good
standing under the laws of the State of Florida.

     16. The payment of cash in lieu of fractional shares of stock of RoTech was
not separately  bargained for consideration and is being made for the purpose of
saving IHS the expense and inconvenience of issuing fractional shares.

     17. At the Effective Time of the Merger,  RoTech will not have  outstanding
any  warrants,  options,  convertible  securities,  or any  other  type of right
pursuant to which any person could acquire stock in RoTech that, if exercised or
converted, would affect IHS's acquisition or retention of Control of RoTech.

     18. None of the  compensation  received by any stockholder of RoTech who is
(or was) a service  provider to RoTech will be  separate  consideration  for, or
allocable  to, any of his or her shares of RoTech  stock,  and the  compensation
paid to any such  person  will be for  services  actually  rendered  and will be
commensurate  with amounts paid to third parties  bargaining at arms-length  for
similar services. None of the shares of IHS stock received by any shareholder of
RoTech  who  is  (or  was)  a  service  provider  to  RoTech  will  be  separate
consideration  for, or  allocable  to, past or future  services  (including  any
employment agreement or any covenants not to compete).

     19. The terms of the Merger Agreement and all other agreements entered into
in connection therewith were the product of arms-length negotiations.

     20. No  issuance  of RoTech  stock or rights to acquire  RoTech  stock have
occurred  or will occur  during the  Pre-Merger  Period  other than  pursuant to
options, warrants, or agreements outstanding prior to the Pre-Merger Period.

     21.  Attached  hereto as Schedule A is a list  containing  the names of all
persons  that,  to the  knowledge  of  RoTech,  owned  at any  time  during  the
Pre-Merger  Period five percent (5%) or more of the total number of  outstanding
shares of RoTech stock.



<PAGE>




September 17, 1997
Page -5-


     22. The Merger Agreement represents the full and complete agreement between
IHS, IHS Sub and RoTech regarding the Merger,  and there are no other agreements
regarding the Merger.

     23. Each of the representations made by RoTech in the Merger Agreement, the
Proxy  Statement/Prospectus and any other documents associated therewith is true
and accurate,  and the facts relating to the Merger, as such facts are described
in the Proxy  Statement/  Prospectus,  are,  insofar  as such  facts  pertain to
RoTech, true, correct and complete in all material respects.

     24.  RoTech  is  authorized  to make all of the  representations  set forth
herein.

     RoTech will  promptly and timely  notify IHS if, after signing this letter,
RoTech has reason to believe  that (i) any of the facts  described  herein or in
the Proxy  Statement/Prospectus  or (ii) any of the representations made in this
letter are untrue, incorrect or incomplete in any respect.

     You have our  permission  to attach a copy of this  letter to your  written
opinion.


                                                  Very truly yours,

                                                  RoTech Medical Corporation, a
                                                  Florida corporation



                                                  By:/s/ Stephen P. Griggs
                                                     --------------------------
                                                     Stephen P. Griggs,President












<PAGE>


                                   SCHEDULE A

                       Owners of five percent (5%) or more
                       of the total number of outstanding
                      shares of RoTech stock as of 7/31/97



Putnam Investments, Inc.                                               7.6%
One Post Office Square
Boston, Massachusetts 02109

Thayers Colonial Pharmacy, Inc.                                        5.7%
220 Trismen Terrace
Winter Park, Florida  32789











                              FULBRIGHT & JAWORSKI
                                     L.L.P.
                   A REGISTERED LIMITED LIABILITY PARTNERSHIP
                                666 FIFTH AVENUE
                         NEW YORK, NEW YORK 10103-3198

                                                                   HOUSTON
                                                               WASHINGTON, D.C.
                                                                   AUSTIN
                                                                 SAN ANTONIO
                                                                   DALLAS
  TELEPHONE: 212/318-3000                                         NEW YORK
  FACSIMILE: 212/752-5958                                        LOS ANGELES
                                                                   LONDON
                                                                  HONG KONG
September 17, 1997



Integrated Health Services, Inc.
10065 Red Run Boulevard
Owings Mills, MD 21117


Ladies and Gentlemen:

     This opinion is being  delivered in connection  with the Agreement and Plan
of  Merger  ("Merger  Agreement"),  dated  as of  July  6,  1997,  by and  among
Integrated  Health  Services,  Inc.  ("IHS"),  IHS Acquisition  XXIV, Inc. ("IHS
Sub"),  and  RoTech  Medical  Corporation  ("RoTech").  Pursuant  to the  Merger
Agreement,  IHS Sub will merge with and into RoTech (the  "Merger"),  and RoTech
will be the  survivor.  This opinion is issued with  respect to certain  federal
income tax  consequences  of the Merger. 

     All  capitalized  terms  not  otherwise  defined  herein  have the  meaning
assigned to them in the Merger Agreement or the Joint Proxy Statement/Prospectus
of IHS and RoTech (the "Joint Proxy Statement/Prospectus") which forms a part of
the  Registration  Statement to which this  opinion is filed as an exhibit.  All
section references, unless otherwise indicated, are to the Internal Revenue Code
of 1986, as amended (the "Code").

     We have acted as legal  counsel to IHS and IHS Sub in  connection  with the
Merger. As such, and for the purpose of rendering this opinion, we have examined
and are relying upon (without any independent  investigation  or review thereof)
the truth and accuracy,  at all relevant times,  of the  statements,  covenants,
representations and warranties contained in the following documents:

          1. The Merger Agreement;

          2. The  Joint  Proxy  Statement/Prospectus;

          3.  Representations  made  to  us by  IHS  and  IHS  Sub  in a  letter
     reproduced as Attachment A hereto;




<PAGE>


September 17, 1997
Page 2



          4.  Representations  made to us by  RoTech in a letter  reproduced  as
     Attachment B hereto; and

          5. Such other documents, records and matters of law as in our judgment
     were necessary or appropriate.

     In connection  with  rendering this opinion,  we have assumed  (without any
independent  investigation or review thereof) that original documents (including
signatures) are authentic,  that documents  submitted to us as copies conform to
the  original  documents,  and that there has been (or will be by the  Effective
Time of the Merger)  due  execution  and  delivery  of all  documents  where due
execution and delivery are prerequisites to the effectiveness thereof.

     Based  on our  examination  of  the  foregoing  items  and  subject  to the
assumptions, exceptions, limitations and qualifications set forth herein, we are
of the opinion that, for federal income tax purposes:

          1. The Merger  will  qualify as a  reorganization  pursuant to Section
     368(a) of the Code; and

          2. No gain or loss will be recognized by either IHS, IHS Sub or RoTech
     as a result of the consummation of the Merger.

     In addition to the assumptions set forth above,  this opinion is subject to
the exceptions, limitations and qualifications set forth below.

          1.  This  opinion  represents  and is based  upon  our  best  judgment
     regarding  the  application  of federal  income tax laws arising  under the
     Code, existing judicial decisions, administrative regulations and published
     rulings  and  procedures.  Our  opinion is not  binding  upon the  Internal
     Revenue  Service or the courts,  and we cannot  provide  assurance that the
     Internal Revenue Service will not assert a contrary position.  Furthermore,
     we  cannot  provide   assurance  that  future   legislative,   judicial  or
     administrative  changes would not, on either a prospective  or  retroactive
     basis,  adversely  affect the accuracy of the  conclusions  stated  herein.
     Moreover,  we  undertake  no  responsibility  to  advise  you  of  any  new
     developments in the application or interpretation of the federal income tax
     laws as they might relate to this opinion.

          2. This  opinion  addresses  only whether the Merger will qualify as a
     reorganization  under Section  368(a) of the Code and the tax  consequences
     listed above. The opinion does not address any other federal,  state, local
     or foreign  tax  consequences  that may result from the Merger or any other
     transaction.



                                       -2-


<PAGE>


September 17, 1997
Page 3


          3. No opinion is expressed as to any transaction other than the Merger
     as described in the Merger  Agreement.  Moreover,  we have assumed that all
     the  transactions  described in the Merger  Agreement  have been or will be
     consummated  in  accordance  with the terms of such  Merger  Agreement  and
     without waiver or breach of any material  provision thereof and that all of
     the representations,  warranties,  statements and assumptions upon which we
     have relied  remain true and  accurate at all  relevant  times.  Any change
     after  the date  hereof  in the facts  and  circumstances  surrounding  the
     Merger, or any inaccuracy in the  representations,  warranties,  statements
     and  assumptions  upon  which we have  relied  may  affect  the  continuing
     validity of the opinion set forth herein.  We assume no  responsibility  to
     inform you of any such change or  inaccuracy  that may occur or come to our
     attention.

          4.  This  opinion  has  been  delivered  to you  for  the  purpose  of
     satisfying the condition set forth in Section 7.18 of the Merger  Agreement
     and is intended  solely for your benefit.  We hereby consent to your filing
     this opinion as an exhibit to the Registration Statement of which the Joint
     Proxy Statement/Prospectus forms a part and to the reference therein to our
     firm under the  captions  "Certain  Federal  Income Tax  Consequences"  and
     "Legal  Matters." This opinion may not be relied upon for any other purpose
     or by any other  person or  entity,  and may not be made  available  to any
     other person or entity, without our prior written consent.

                                             Very truly yours,



                                             /s/ Fulbright & Jaworski L.L.P.





                                       -3-

<PAGE>

                                                                    ATTACHMENT A


                        INTEGRATED HEALTH SERVICES, INC.
                             10065 RED RUN BOULEVARD
                             OWINGS MILLS, MD 21117


                               September 17, 1997


Fulbright & Jaworski L.L.P.
666 Fifth Avenue
New York, New York 10103

Winderweedle, Haines, Ward
         & Woodman, P.A.
Post Office Box 880
Winter Park, Florida 32790-0880


     Re:  Merger of IHS  Acquisition  XXIV,  Inc., a wholly-owned  subsidiary of
          Integrated Health Services, Inc., into Rotech Medical Corporation

Gentlemen:

     You have requested that we represent  certain  matters to you in connection
with the opinion that you are rendering  with respect to certain  federal income
tax  consequences  of the merger (the "Merger") of IHS  Acquisition  XXIV,  Inc.
("IHS Sub"),  a  wholly-owned  subsidiary of Integrated  Health  Services,  Inc.
("IHS") with and into Rotech Medical Corporation  ("Rotech").  We recognize that
you will rely on this  certificate in rendering your opinion pursuant to section
7.18 of the Agreement and Plan of Merger,  dated as of July 6, 1997 by and among
IHS, IHS Sub, and Rotech (the "Merger  Agreement")  and in connection  with your
description  of certain  federal  income tax  consequences  of the Merger in the
Proxy  Statement/Prospectus  of IHS and Rotech. Unless otherwise specified,  the
capitalized  terms used herein are defined in the Merger  Agreement or the Proxy
Statement/Prospectus of IHS and Rotech.

             In accordance  with your request,  we hereby  represent to you that
the  following  facts  are  now  true  and  will  continue  to be true as of the
Effective Time of the Merger:

             1. The Merger is being  undertaken  to enhance the  business of the
IHS and the IHS Sub and for other good business purposes of the IHS.

             2. At the  Effective  Time of the Merger,  the fair market value of
the IHS stock plus cash in lieu of  fractional  shares  received  by each Rotech
stockholder will be  approximately  equal to the fair market value of the Rotech
stock surrendered in exchange therefor.



<PAGE>




             3. Prior to the  Merger,  IHS will be in  "Control"  of IHS Sub. As
used in this letter, "Control" means the direct ownership of stock possessing at
least eighty percent (80%) of the total combined  voting power of all classes of
stock  entitled to vote and at least eighty percent (80%) of the total number of
shares  of each  other  class of  stock  of the  corporation.  For  purposes  of
determining  Control,  a person or entity shall not be  considered to own voting
stock if rights to vote such stock (or to  restrict  or  otherwise  control  the
voting of such stock) are held by a third party (including a voting trust) other
than an agent of such person or entity.

             4. IHS has no plan or intention  to redeem or  otherwise  reacquire
any of its stock issued pursuant to the Merger.

             5.  Following the Merger,  Rotech will hold at least ninety percent
(90%) of the fair  market  value of IHS Sub's net  assets  and at least  seventy
percent  (70%)  of  the  fair  market  value  of IHS  Sub's  gross  assets  held
immediately  prior to the Merger  (other  than stock of IHS  distributed  in the
Merger).  For the purpose of  determining  the  percentages of the net and gross
assets held immediately  before the Merger,  assets  transferred from IHS to IHS
Sub in pursuance of the plan of reorganization are not taken into account. Thus,
the money transferred from IHS to IHS Sub to be used for the following  purposes
is  not  taken  into  account:  (i)  to  pay  additional  consideration  to  the
stockholders  of  Rotech;  (ii)  to  pay  creditors  of  Rotech;  (iii)  to  pay
reorganization  expenses;  or (iv) to enable  IHS Sub to satisfy  state  minimum
capitalization  requirements  (where the money is  returned  to the  controlling
corporation as part of the transaction).

             6. Except for transfers  described in Section  368(a)(2)(C)  of the
Code, IHS has no plan or intention to liquidate  Rotech; to merge Rotech with or
into  another  corporation  including  IHS or any of its  affiliates;  to  sell,
distribute  or  otherwise  dispose of the capital  stock of Rotech;  or to cause
Rotech to sell or otherwise dispose of any of its assets or of any of the assets
acquired from IHS Sub,  except for  dispositions  made in the ordinary course of
business or transfers of assets to a corporation Controlled by Rotech.

             7. IHS Sub will have no liabilities  assumed by Rotech and will not
transfer to Rotech any assets subject to liabilities in the Merger.

             8.  Following  the Merger,  IHS will cause  Rotech to continue  the
historic business Rotech was conducting  immediately  before the Merger or cause
Rotech to use a significant portion of the historic business assets of Rotech in
a business, within the meaning of Treasury Regulation Section 1.368-1(d).

             9. IHS and IHS Sub will pay their  expenses,  if any,  incurred  in
connection  with the Merger,  and neither IHS nor IHS Sub will pay the expenses,
if any,  incurred in connection with the Merger by Rotech or the stockholders of
Rotech.



                                       -2-


<PAGE>



             10.  IHS  has no  plan  or  intention  to  cause  Rotech  to  issue
additional  shares of Rotech  stock  after the Merger  that would  result in IHS
losing Control of Rotech.

             11.  Neither IHS, IHS Sub nor any affiliate of IHS or IHS Sub owns,
or has owned during the past five (5) years, directly or indirectly,  any shares
of Rotech stock or the right to acquire or vote any such stock.

             12.  Neither  IHS nor IHS Sub is, and will not be at the  Effective
Time of the  Merger,  an  "investment  company"  within  the  meaning of Section
368(a)(2)(F)(iii) and (iv) of the Code.

             13. No  stockholder of Rotech is acting (or has acted) as agent for
IHS or IHS Sub in  connection  with the  Merger  or the  approval  thereof;  and
neither  IHS  nor  IHS  Sub  will  reimburse  (or  has  reimbursed)  any  Rotech
stockholder  for Rotech stock such  stockholder  may have purchased or for other
obligations such stockholder may have incurred as agent for IHS or IHS Sub.

             14. In the Merger,  shares of Rotech stock representing  Control of
Rotech  will be  exchanged  for  voting  stock  of  IHS.  For  purposes  of this
representation,  shares of Rotech  stock  exchanged  for cash or other  property
originating  with IHS or a direct or indirect  subsidiary of IHS will be treated
as outstanding Rotech stock on the Effective Date of the Merger.

             15. No shares of IHS Sub have been or will be used as consideration
for or issued to stockholders of Rotech pursuant to the Merger.

             16. There is no  intercorporate  indebtedness  existing between IHS
and Rotech or between IHS Sub and Rotech that was issued,  acquired,  or will be
settled at a discount as a result of the Merger.

             17. The payment of cash in lieu of  fractional  shares of IHS stock
is solely for the purpose of avoiding  the expense and  inconvenience  to IHS of
issuing  fractional  shares  and does  not  represent  separately  bargained-for
consideration.

             18.  The terms of the  Merger  Agreement  and all other  agreements
entered  into  in  connection   therewith  were  the  product  of   arm's-length
negotiations.

             19. None of the shares of IHS stock received by any  shareholder of
Rotech  who  is  (or  was)  a  service  provider  to  Rotech  will  be  separate
consideration  for, or  allocable  to, past or future  services  (including  any
employment agreement or any covenants not to compete).

             20. The Merger Agreement represents the full and complete agreement
between IHS,  IHS Sub and Rotech  regarding  the Merger,  and there are no other
agreements regarding the Merger.


                                       -3-


<PAGE>



             21. The Merger will be consummated in accordance  with the material
terms of the Merger  Agreement  and none of the  material  terms and  conditions
therein have been waived or modified and neither IHS nor IHS Sub has any plan or
intention to waive or modify any such material condition.

             22.  Each  of the  representations  made  by IHS and IHS Sub in the
Merger  Agreement,  the  Proxy  Statement/Prospectus,  and any  other  documents
associated therewith is true and accurate, and the facts relating to the Merger,
as such facts are described in the Proxy  Statement/Prospectus,  are, insofar as
such  facts  pertain  to IHS and IHS Sub,  true,  correct  and  complete  in all
material respects.

             23.   IHS  and  IHS  Sub  are   authorized   to  make  all  of  the
representations set forth herein.

             24. IHS is,  and at the  Effective  Time of the  Merger  will be, a
corporation duly organized under the laws of the State of Delaware.  IHS Sub is,
and at the Effective  Time of the Merger will be, a corporation  duly  organized
under the laws of the State of Florida.

             IHS and  IHS Sub  will  promptly  and  timely  notify  Fulbright  &
Jaworski  L.L.P.  and Rotech if, after  signing this letter,  IHS or IHS Sub has
reason to  believe  that (i) any of the facts  described  herein or in the Proxy
Statement/Prospectus  or (ii) any of the representations made in this letter are
untrue, incorrect or incomplete in any respect.

             In rendering your opinion, you have our permission to attach a copy
of this letter to your written opinion.

                                               Very truly yours,

                                               INTEGRATED HEALTH SERVICES, INC.,
                                               a Delaware corporation


                                               By:/s/ Mark Fulchino
                                                  ------------------------------
                                               Title:Vice President - Tax
                                                     ---------------------------

                                               IHS ACQUISITION XXIV, INC.,
                                               a Florida corporation


                                               By:/s/ Mark Fulchino
                                                  ------------------------------
                                               Title:Vice President - Tax
                                                     ---------------------------

                                       -4-

<PAGE>

                                                                    ATTACHMENT B

                           RoTech Medical Corporation
                         4506 LB. Macleod Road, Suite F
                                Orlando, FL 32811


                               September 17, 1997


Winderweedle, Haines, Ward
   & Woodman, P.A.
Post Office Box 880
Winter Park, Florida  32790-0880

Fulbright & Jaworski, L.L.P.
666 Fifth Avenue
New York, New York   10103

         Re:      Agreement and Plan of Merger by and among Integrated
                  Health Services, Inc., IHS Acquisition XXIV, Inc., and
                  RoTech Medical Corporation

Gentlemen:

     You have requested that we represent  certain  matters to you in connection
with the opinion that you are rendering  with respect to certain  federal income
tax  consequences  of the merger (the "Merger") of IHS  Acquisition  XXIV,  Inc.
("IHS Sub"),  a  wholly-owned  subsidiary of Integrated  Health  Services,  Inc.
("IHS") with and into RoTech Medical Corporation  ("RoTech").  We recognize that
you will rely on this  certificate in rendering your opinion pursuant to Section
7.18 of the Agreement and Plan of Merger, dated as of July 6, 1997, by and among
IHS, IHS Sub, and RoTech (the "Merger  Agreement")  and in connection  with your
description  of certain  federal  income tax  consequences  of the Merger in the
Proxy  Statement/Prospectus  of IHS and RoTech. Unless otherwise specified,  the
capitalized  terms used herein are defined in the Merger  Agreement or the Proxy
Statement/Prospectus of IHS and RoTech.

     In  accordance  with  your  request,  we hereby  represent  to you that the
following  facts are now true and will  continue to be true as of the  Effective
Time of the Merger:

     1. The Merger is being undertaken to enhance the business of RoTech and for
other good business purposes of RoTech.

     2.  After due  inquiry  (except  that no inquiry  was made with  respect to
Putnam  Investments,  Inc.),  there is no plan or  intention  on the part of the
stockholders of RoTech who own five percent (5%)


<PAGE>



September 17, 1997
Page -2-


or more of the RoTech stock,  and to the best of the knowledge of the management
of  RoTech,  there  is no  plan  or  intention  on the  part  of  the  remaining
stockholders of RoTech to sell,  exchange,  or otherwise  dispose of a number of
shares  of IHS stock  received  in the  Merger  that  would  reduce  the  RoTech
stockholders'  ownership of the IHS stock to a number of shares  having a value,
as of the Effective Time of the Merger,  of less than fifty percent (50%) of the
aggregate fair market value, immediately prior to the Merger, of all outstanding
shares of RoTech stock.  For purposes of this  paragraph,  fractional  shares of
RoTech  stock that are deemed to be received in the Merger in exchange  for cash
will be treated  as  outstanding  RoTech  stock  exchanged  for IHS stock in the
Merger and then  disposed of pursuant to a plan.  Additionally,  for purposes of
this  paragraph,  shares of RoTech  stock and shares of IHS stock held by RoTech
stockholders  and  otherwise  sold,  redeemed  or  disposed  of  prior to and in
contemplation  of the Merger or  subsequent  to the Merger  shall be  considered
shares of RoTech stock exchange for IHS stock in the Merger and then disposed of
pursuant to a plan.

     3. The Merger will be consummated in compliance  with the material terms of
the Merger Agreement and none of the material terms and conditions  therein have
been waived or modified  and RoTech has no plan or  intention to waive or modify
further any such material condition.

     4. At the  Effective  Time of the Merger,  the fair market value of the IHS
common stock and other  consideration  to be received by RoTech  stockholders in
the Merger will be  approximately  equal to the fair market  value of the RoTech
stock surrendered by such stockholders in exchange therefor.

     5. Immediately  after the Merger,  RoTech will hold at least ninety percent
(90%) of the fair market  value of its net assets and at least  seventy  percent
(70%) of the fair market value of its gross assets held immediately prior to the
Merger.  For the purpose of  determining  the  percentages  of the net and gross
assets held immediately  before the Merger, the following assets will be treated
as  property  held  immediately  prior  to the  Merger  but not  held by  RoTech
following  the  Merger:  (i)  assets  disposed  of  prior to the  Merger  and in
contemplation thereof (including without limitation any asset disposed of, other
than in the ordinary  course of business,  pursuant to a plan or intent existing
during the period ending on the Effective  Time of the Merger and beginning with
the commencement of negotiations (whether formal or informal) with IHS regarding
the Merger (the  "Pre-Merger  Period")),  (ii)  assets  used to pay  expenses or
liabilities incurred by RoTech or its shareholders in connection with the Merger
and (iii) assets used to


<PAGE>



September 17, 1997
Page -3-


make distributions,  redemptions or other payments in respect to stock or rights
to acquire such stock (including payments treated as such for tax purposes) that
are made in contemplation of the Merger or during the Pre-Merger  Period or that
are related thereto (other than regular, normal dividends).

     6. The business conducted by RoTech immediately prior to the Merger will be
its historic business.

     7. In the Merger,  shares of RoTech  common stock  representing  Control of
RoTech will be exchanged  solely for voting common stock of IHS. As used in this
letter, "Control" means the direct ownership of stock possessing at least eighty
percent  (80%)  of the  total  combined  voting  power of all  classes  of stock
entitled to vote and at least eighty percent (80%) of the total number of shares
of each other class of stock of the  corporation.  For  purposes of  determining
Control,  a person or entity  shall not be  considered  to own  voting  stock if
rights to vote such stock (or to  restrict  or  otherwise  control the voting of
such stock) are held by a third party  (including a voting  trust) other than an
agent of such person or entity. For purposes of this  representation,  shares of
RoTech common stock  exchanged for cash or other property  originating  with IHS
will be treated as outstanding RoTech stock on the Effective Date of the Merger.

     8. RoTech has no plan or intention to issue additional  shares of its stock
that would result in IHS losing Control of RoTech.

     9.  RoTech  and the  stockholders  of  RoTech  will  pay  their  respective
expenses,  if any,  incurred in connection with the Merger.  RoTech will not pay
any of the  expenses,  if any,  of IHS,  IHS Sub or the  stockholders  of RoTech
incurred in connection with the Merger.

     10. There is no intercorporate indebtedness existing between IHS and RoTech
or between IHS Sub and RoTech that was issued, acquired, or will be settled at a
discount as a result of the Merger.

     11. At the  Effective  Time of the  Merger,  the fair  market  value of the
assets  of  RoTech  will  exceed  the  sum of  its  liabilities  (including  any
liabilities to which its assets are subject).

     12. No stock of IHS Sub will be issued in the Merger.




<PAGE>



September 17, 1997
Page -4-


     13. RoTech is not and will not be at the Effective  Time of the Merger,  an
"investment  company"  as defined in Section  368(a)(2)(F)(iii)  and (iv) of the
Code.

     14.  RoTech is not,  and will not be at the  Effective  Time of the Merger,
under the  jurisdiction  of a court in a Title 11 or  similar  case  within  the
meaning of Section 368(a)(3)(A) of the Code.

     15. RoTech is a corporation  duly organized,  validly  existing and in good
standing under the laws of the State of Florida.

     16. The payment of cash in lieu of fractional shares of stock of RoTech was
not separately  bargained for consideration and is being made for the purpose of
saving IHS the expense and inconvenience of issuing fractional shares.

     17. At the Effective Time of the Merger,  RoTech will not have  outstanding
any  warrants,  options,  convertible  securities,  or any  other  type of right
pursuant to which any person could acquire stock in RoTech that, if exercised or
converted, would affect IHS's acquisition or retention of Control of RoTech.

     18. None of the  compensation  received by any stockholder of RoTech who is
(or was) a service  provider to RoTech will be  separate  consideration  for, or
allocable  to, any of his or her shares of RoTech  stock,  and the  compensation
paid to any such  person  will be for  services  actually  rendered  and will be
commensurate  with amounts paid to third parties  bargaining at arms-length  for
similar services. None of the shares of IHS stock received by any shareholder of
RoTech  who  is  (or  was)  a  service  provider  to  RoTech  will  be  separate
consideration  for, or  allocable  to, past or future  services  (including  any
employment agreement or any covenants not to compete).

     19. The terms of the Merger Agreement and all other agreements entered into
in connection therewith were the product of arms-length negotiations.

     20. No  issuance  of RoTech  stock or rights to acquire  RoTech  stock have
occurred  or will occur  during the  Pre-Merger  Period  other than  pursuant to
options, warrants, or agreements outstanding prior to the Pre-Merger Period.

     21.  Attached  hereto as Schedule A is a list  containing  the names of all
persons  that,  to the  knowledge  of  RoTech,  owned  at any  time  during  the
Pre-Merger  Period five percent (5%) or more of the total number of  outstanding
shares of RoTech stock.



<PAGE>




September 17, 1997
Page -5-


     22. The Merger Agreement represents the full and complete agreement between
IHS, IHS Sub and RoTech regarding the Merger,  and there are no other agreements
regarding the Merger.

     23. Each of the representations made by RoTech in the Merger Agreement, the
Proxy  Statement/Prospectus and any other documents associated therewith is true
and accurate,  and the facts relating to the Merger, as such facts are described
in the Proxy  Statement/  Prospectus,  are,  insofar  as such  facts  pertain to
RoTech, true, correct and complete in all material respects.

     24.  RoTech  is  authorized  to make all of the  representations  set forth
herein.

     RoTech will  promptly and timely  notify IHS if, after signing this letter,
RoTech has reason to believe  that (i) any of the facts  described  herein or in
the Proxy  Statement/Prospectus  or (ii) any of the representations made in this
letter are untrue, incorrect or incomplete in any respect.

     You have our  permission  to attach a copy of this  letter to your  written
opinion.


                                                  Very truly yours,

                                                  RoTech Medical Corporation, a
                                                  Florida corporation



                                                  By:/s/ Stephen P. Griggs
                                                     --------------------------
                                                     Stephen P. Griggs,President










<PAGE>


                                   SCHEDULE A

                       Owners of five percent (5%) or more
                       of the total number of outstanding
                      shares of RoTech stock as of 7/31/97



Putnam Investments, Inc.                                               7.6%
One Post Office Square
Boston, Massachusetts 02109

Thayers Colonial Pharmacy, Inc.                                        5.7%
220 Trismen Terrace
Winter Park, Florida  32789







                                                              


                              EMPLOYMENT AGREEMENT


     THIS  AGREEMENT  made  and  entered  into as of the day of ,  1997,  by and
between ROTECH MEDICAL  CORPORATION,  a Florida  corporation (the "Company") and
wholly  owned  subsidiary  of  INTEGRATED  HEALTH  SERVICES,  INC.,  a  Delaware
corporation  ("IHS"),  and  STEPHEN P.  GRIGGS  (hereinafter  referred to as the
"Employee").



                              W I T N E S S E T H:

     WHEREAS,  pursuant to an Agreement and Plan of Merger,  dated as of , 1997,
among the Company, IHS, and IHS Acquisition XXIV, Inc. (the "Merger Agreement"),
the Company and IHS have agreed to a merger; and

     WHEREAS,  as a condition to the Merger  Agreement,  IHS  requires  that the
Employee  terminate  his  existing  employment  arrangement  and enter into this
Employment Agreement with the Company; and

     WHEREAS, through his past association with the Company and in the course of
his employment by the Company, and as a necessary consequence thereof,  Employee
has  received  and will  receive  information  and has acquired and will acquire
knowledge of special procedures, processes, business conduct, and knowledge that
is private,  proprietary,  and secret to the Company and IHS in their respective
businesses; and

     WHEREAS,  the  business,  as well as the success and profits of the Company
and IHS,  depend  in large  part  upon the  maintenance  of  secrecy  as to such
information,  processes,  procedures  and  knowledge  as to the  conduct  of the
Company's and IHS's businesses generally.

     NOW,  THEREFORE,  in  consideration of the foregoing  premises,  the mutual
agreements herein contained,  as well as the agreement to employ the Employee or
to  continue to employ the  Employee  under the terms and  conditions  contained
herein,  and  intending to be legally  bound  hereby,  it is agreed  between the
parties hereto as follows:


                                      - 1 -

<PAGE>



                                    ARTICLE I

                             EMPLOYMENT RELATIONSHIP


     1.1 TERMINATION OF PRIOR EMPLOYMENT  ARRANGEMENT.  The existing  employment
arrangement  between the Company  and  Employee  (whether  written,  verbal,  or
otherwise),  is hereby terminated in all respects (including with respect to any
provisions  which otherwise by their terms would survive any termination of such
agreement), effective as of the date hereof.

     1.2 EMPLOYMENT.  The Company hereby employs the Employee in the position of
President  of the  Company,  with  such  responsibilities,  consistent  with his
position as  President,  as may be assigned to Employee from time to time by the
President or Chief  Operating  Officer of IHS.  Employee  shall report to and be
responsible  to said  President  or  Chief  Operating  Officer  for  the  period
hereinafter set forth, and the Employee hereby accepts such employment.

     1.3  EXCLUSIVE  EMPLOYMENT.  During  the  continuation  of  the  Employee's
employment by the Company hereunder, the Employee will faithfully and diligently
carry out his duties, and will, unless the Employee has first received the prior
written consent of the Company,  devote the Employee's reasonable full time, and
his best efforts,  energy,  attention,  and skill to the services of the Company
and to the promotion of its  interests,  and,  without  limiting the  foregoing,
Employee  covenants that during such time the Employee will neither:  (a) engage
in, be employed  by, be a director  of or be  otherwise  directly or  indirectly
interested in (i) any business or activity competing with or of a nature similar
to any of the businesses of the Company or IHS, or (ii) any business or activity
engaged in the  owning,  operation  or  management  of any  business or activity
competing with or of a nature similar to any of the businesses of the Company or
IHS, nor (b) take any part in any  activities  detrimental to the best interests
of the Company or IHS.  Notwithstanding the foregoing,  Employee has represented
to the Company,  and the Company  acknowledges,  that  Employee is the principal
owner of the companies listed on Exhibit A to this Agreement


                                      - 2 -

<PAGE>



and that Employee  presently  devotes an  insubstantial  portion of his business
time and energy to these  businesses.  Company agrees that Employee may continue
to serve the companies listed on Exhibit A in the same capacity as he has in the
past, provided that said companies,  and the Employee's rendition of services in
connection therewith,  are not competitive with or of a similar nature to any of
the  businesses of the Company or IHS and  otherwise do not  interfere  with the
performance by Employee of his obligations under this Agreement.

                                   ARTICLE II

                              PERIOD OF EMPLOYMENT

     2.1 TERM.  The term of employment  under this  Agreement (the "Term") shall
begin as of the date  hereof,  and shall end five (5) years  following  the date
hereof, unless sooner terminated pursuant to the terms of this Agreement.

     2.2  TERMINATION  FOR CAUSE BY COMPANY.  Company may  terminate  Employee's
employment  under this  Agreement  with cause and without any  obligation to pay
Employee further  compensation (except through the date of any such termination)
upon the occurrence of any one or more of the following events:

          (A) Employee  fails to perform any of his duties of  employment in any
     material respect or ceases to perform his professional  responsibilities or
     assignments  in any material  respect or breaches any material term of this
     Agreement, which failure, non-performance or breach is not corrected within
     thirty (30) days after  notice is  delivered by the Company to the Employee
     specifying said failure,  non-performance  or breach,  or Employee breaches
     any of his  representations  or  warranties  under  this  Agreement  in any
     material respect;

          (B) Employee dies;

          (C)  Employee  becomes  disabled  or is unable to  perform  his normal
     duties,  which condition persists for a period of ninety (90) days or more,
     and Company has provided  Employee with  disability  insurance  which shall
     begin to pay after said ninety (90) day period expires;

          (D)  Employee is  convicted  of a felony,  or commits an act of theft,
     embezzlement, obtaining funds or property under false pretenses, or similar
     act of material misconduct with respect to the property of the Company, IHS
     or their subsidiaries or any of their respective employees; or


                                      - 3 -

<PAGE>



          (E) Employee  commits a material  act of  malfeasance,  dishonesty  or
     breach  of  trust  with  respect  to the  Company,  IHS  or  any  of  their
     subsidiaries.  Upon any such  termination as set forth in this  Subsection,
     the Company shall have no obligation to pay Employee  further  compensation
     or to provide further benefits to Employee (except through the date of such
     termination), and the Company shall be entitled to pursue any remedies that
     it may have against Employee.

     2.3 TERMINATION  WITHOUT CAUSE BY COMPANY.  If this Agreement is terminated
by Company without cause,  the balance of Employee's  unpaid base salary and the
pro-rated portion of the  performance-based  bonus, if any, earned under Section
3.2(b) will become  payable in a lump sum and all  unvested  stock  options will
become fully vested upon Employee's termination.

     2.4. TERMINATION FOR CAUSE BY EMPLOYEE. This Agreement may be terminated by
Employee  if (i)  Company  fails to perform  any of its duties set forth in this
Agreement in any material respect, (ii) Company fails to provide Employee with a
work  environment  (i.e.,  office  space,  secretarial  support,  etc.)  that is
reasonably  similar to Employee's  past work  environment  with the Company,  or
(iii) Company substantially  changes Employee's job responsibilities,  and, with
respect to each of the  foregoing,  such  failure or action is not  corrected by
Company  within  fifteen  (15) days  after  notice is  delivered  to  Company by
Employee  specifying  said failure or action.  In the event of a termination for
cause under this Section 2.4, the balance of  Employee's  unpaid base salary and
the  pro-rated  portion of the  performance-based  bonus,  if any,  earned under
Section 3.2(b) will become  payable in a lump sum and all unvested  options will
become fully vested upon such termination.

                                   ARTICLE III

                                  COMPENSATION

     3.1  BASE  SALARY.  For  all  services  rendered  by  Employee  under  this
Agreement,  during the Term,  the  Employee  shall  receive a base  salary at an
annual  rate of $500,000  per year,  payable in  accordance  with the pay period
policy established by the Company from time to time.



                                      - 4 -

<PAGE>



     3.2 BONUSES.

          (A)  Employee   shall   receive  a  one-time  cash  sign-on  bonus  of
     $3,500,000, payable upon execution of this Agreement; and

          (B) Within  ninety (90) days of the close of each calendar year during
     which this Agreement is or was in effect, the Company shall pay to Employee
     a cash bonus in the amount of  $500,000,  provided  that the Company  shall
     have  achieved  the  performance  goals  specified on Exhibit B hereto with
     respect to such year, and provided  further that said bonus will be reduced
     pro rata for any year during  which this  Agreement  was in effect for less
     than the entire year.

     3.3 STOCK  OPTIONS.  Employee will be granted an option under the Company's
1996 Stock  Incentive Plan to purchase  750,000 shares of IHS common stock at an
exercise price equal to the average  closing sales price per share of IHS Common
Stock  quoted  on the  NYSE  for the  fifteen  (15)  business  days  immediately
preceding the effective date of the Merger of a  wholly-owned  subsidiary of IHS
with and into the  Company,  which  option will  become  vested at a rate of 20%
annually  commencing on the first anniversary of the closing of the Merger.  The
agreement pursuant to which such option is granted shall provide that the option
will become fully vested if Employee  shall die during the Term or upon a change
of control of the Company (as defined in said option agreement).

     3.4  ADDITIONAL  BENEFITS.  Separate  and apart  from the  Employee's  cash
compensation as set forth above, during the Term the Company shall provide for:

          (A) Employee's  coverage under the Company's standard life, health and
     long-term disability insurance package;

          (B) an automobile allowance, at the rate of $800 per month;

          (C)  participation  in the  Company's  standard  HR (Human  Resources)
     package;

          (D) four (4) weeks of  non-cumulative  paid  vacation  (in addition to
     normal paid holidays and sick leave); and

          (E)  participation  in any  other  employee  benefits  made  available
     generally  from and after the date hereof to  executives of the Company and
     IHS, on the same basis as shall be available to such other executives.

                                   ARTICLE IV

                            COVENANTS OF THE EMPLOYEE


                                      - 5 -

<PAGE>



     4.1  OWNERSHIP  AND  RETURN OF  DOCUMENTS.  The  Employee  agrees  that all
memoranda,  notes,  records,  papers or other  documents and all copies  thereof
relating  to the  Company's  operations  or  businesses,  regardless  of whether
prepared  by the  Employee,  and all  objects  associated  therewith  in any way
obtained by the Employee shall be the Company's property.  Except as required to
satisfy his  obligations  under this  Agreement,  the Employee shall not copy or
duplicate any of the aforementioned  documents or objects,  nor remove them from
the Company's  facilities nor use any information  concerning them either during
the Employee's  employment or thereafter.  The Employee agrees that the Employee
will deliver all of the aforementioned  documents and objects that may be in his
possession to the Company on termination of the Employee's employment, or at any
other  time on the  Company's  request,  together  with the  Employee's  written
certification of compliance with the provision of this paragraph.

     4.2 CONFIDENTIAL  INFORMATION.  In connection with his association with the
Company and in connection with his employment at the Company,  Employee has had,
and will have, access to confidential information ("Trade Secrets"),  including,
without limitation,  with respect to some or all of the following  categories of
information:

          (A) FINANCIAL  INFORMATION,  including but not limited to  information
     relating  to  the  Company's  earnings,   assets,  debts,  prices,  pricing
     structure,  reimbursement  matters,  volume of  purchases or sales or other
     financial data whether related to the Company  generally,  or to particular
     products, services, geographic areas, or time periods;

          (B) SUPPLY  AND  SERVICE  INFORMATION,  including  but not  limited to
     information relating to goods and services,  suppliers' names or addresses,
     terms of supply or service  contracts  or of  particular  transactions,  or
     related  information  about  potential  suppliers  to the extent  that such
     information  is not generally  known to the public,  and to the extent that
     the  combination  of  suppliers  or use of a  particular  supplier,  though
     generally known or available,  yields  advantages to the Company details of
     which are not generally known;

          (C) MARKETING  INFORMATION,  including but not limited to  information
     relating  to  details  about  ongoing or  proposed  marketing  programs  or
     agreements  by or on behalf of the Company,  sales  forecasts,  advertising
     formats and methods or results of marketing  efforts or  information  about
     impending transactions;

          (D) PERSONNEL  INFORMATION,  including but not limited to  information
     relating to employees' personal or medical histories, compensation or other
     terms of employment, actual or


                                      - 6 -

<PAGE>



     proposed   promotions,   hirings,   resignations,   disciplinary   actions,
     terminations or reasons therefor,  training methods,  performance, or other
     employee information;

          (E) CUSTOMER  AND PATIENT  INFORMATION,  including  but not limited to
     information  relating  to  past,  existing  or  prospective  customers'  or
     patients' names,  addresses or backgrounds,  patients'  medical  histories,
     records of agreements and prices, proposals or agreements between customers
     and the  Company,  status of  customers'  accounts  or  credit,  or related
     information  about  actual or  prospective  customers  as well as  customer
     lists; and

          (F)  INVENTIONS  AND  TECHNOLOGICAL  INFORMATION,  including  but  not
     limited to information  related to proprietary  technology,  trade secrets,
     research and  development  data,  processes,  formulae,  data and know-how,
     improvements,   inventions,  techniques,  and  information  that  has  been
     created,  discovered  or developed,  or has  otherwise  become known to the
     Company   (including,   without   limitation,   any  information   created,
     discovered, developed or made known by or to the Employee during the period
     of or arising out of Employee's employment by the Company), and/or in which
     property  rights have been  assigned or otherwise  conveyed to the Company,
     which information has commercial value in the business in which the Company
     is engaged.

     Company and Employee consider their relation one of confidence with respect
to Trade  Secrets.  During  and  after  Employee's  employment  by the  Company,
regardless of the reasons that such employment ends, Employee agrees:

          (AA) To hold all  Trade  Secrets  in  confidence  and to not  discuss,
     communicate or transmit to others,  or make any unauthorized copy of or use
     the Trade  Secrets  in any  capacity,  position  or  business  except as it
     directly relates to Employee's employment by the Company;

          (BB) To use the Trade Secrets only in furtherance of proper employment
     related reasons of the Company to further the interests of the Company;

          (CC) To take all actions that Company  reasonably  requests to prevent
     unauthorized  use or disclosure of or to protect the Company's  interest in
     the Trade Secrets; and

          (DD)  That  any of the  Trade  Secrets,  whether  or not  prepared  by
     Employee  and  whether  or not coming  into  Employee's  possession  during
     Employee's  employment hereunder or by reason of his prior association with
     the Company, are and shall remain the property of the Company, and all such
     Trade Secrets,  including copies thereof,  together with all other property
     belonging  to the  Company,  or used  in any of its  businesses,  shall  be
     delivered  to or left  with the  Company  upon  termination  of  Employee's
     employment with the Company.

     This  Agreement does not apply to  information  that (i) becomes  generally
known to the public other than as a result of a disclosure by Employee, (ii) was
known to Employee on a  non-confidential  basis prior to the  disclosure of such
information  to  Employee  by the  Company,  provided  that the  source  of such
information  was not  believed  by  Employee  to be bound  by a  confidentiality
agreement with or other


                                      - 7 -

<PAGE>



contractual,  legal or fiduciary  obligation of  confidentiality  to the Company
with  respect  to  such   material,   (iii)  becomes  known  to  Employee  on  a
non-confidential  basis  from a source  other than the  Company  or its  agents,
advisors or representatives provided that the source of such information was not
believed by Employee to be bound by a  confidentiality  agreement  with or other
contractual,  legal or fiduciary  obligation of  confidentiality  to the Company
with respect to such  material,  or (iv) is required to be disclosed by judicial
or  administrative  proceedings  after Employee notifies the Company of any such
required  disclosure  so as to afford  the  Company  the  opportunity  to obtain
assurance that compelled disclosures will receive confidential treatment.

     To  the  maximum   extent   permitted  by  applicable   law,  the  Employee
specifically waives any rights to customer names, customer lists, customer files
or parts thereof as well as test results or information Employee might otherwise
be entitled to by virtue of any applicable state or federal law or regulation.

     4.3 NON-SOLICITATION AND NON-PIRATING. Employee hereby agrees that, without
the express written  consent of the Company,  the Employee will not, at any time
during the Term, or for a period of three (3) years following the termination or
natural expiration of this Agreement,  directly or indirectly,  for the Employee
or on behalf of any other person, firm, entity or other enterprise:

          (A) solicit  any client or customer of the Company  with the intent of
     diverting such client or customer away from Company or in any way divert or
     take  away any  client  or  customer  of the  Company  who was a client  or
     customer of the Company  while the  Employee was an employee of the Company
     under this  Agreement  (such  period being  hereinafter  referred to as the
     "Employment Period"); and

          (B) hire,  entice away or in any other manner persuade any employee of
     the  Company  who was an  employee  of the  Company  during the  Employment
     Period, to alter,  modify or terminate its relationship with the Company as
     an employee as the case may be.

     4.4  NON-COMPETITION.   In  consideration  of  the  Employee's   employment
hereunder,  and as an inducement to the execution and  performance of the Merger
Agreement  by IHS, the Employee  hereby  agrees that,  for a period of three (3)
years following the termination or the natural  expiration of this Agreement the
Employee will not, without the express written consent of the Company,  directly
or


                                      - 8 -

<PAGE>



indirectly,  for the Employee or on behalf of any other person,  firm, entity or
other  enterprise,  own, be  employed  by, be a director or manager of, act as a
consultant for, be a partner in, have a proprietary interest in, give advice to,
loan  money  to or  otherwise  associate  with,  any  person,  enterprise,  sole
proprietorship  partnership,  association,  corporation,  joint venture or other
entity which is directly or indirectly  in the business of owning,  operating or
managing any entity of any type, licensed or unlicensed,  which is engaged in or
provides home health services or home medical equipment,  or in any way competes
with Company or its subsidiaries  anywhere within the Continental United States.
This  provision  shall not be construed to prohibit the Employee (i) from owning
up to 2% of the issued  shares of any company  whose  common stock is listed for
trading on any national  securities  exchange or on the NASDAQ  National  Market
System,  or (ii)  from  engaging  in  conduct  which  would,  as the  result  of
Employee's association with a particular company, otherwise violate this Section
4.4, if (x) such company's  competitive  activity  represents only an incidental
and immaterial part of such company's  overall  business  enterprise (but in any
event does not account for more than  $2,000,000 in aggregate  gross  revenues),
and (y)  Employee's  association  with  such  company  does not  relate  to such
company's competitive business segment.

     4.5 NECESSARY  RESTRICTIONS.  The parties acknowledge that the restrictions
contained  in this  Article IV are  reasonable  and  necessary  to  protect  the
legitimate  business  interests of the Company and that any violation thereof by
Employee  could  result in  irreparable  harm to the Company;  and further,  the
Employee represents and warrants that the restrictions set forth in this Article
IV are enforceable against him in accordance with their terms. Accordingly,  the
Employee  agrees  that  upon  the  violation  by him of any of the  restrictions
contained in  Paragraphs  4.3 and 4.4, the Company shall be entitled to apply to
any court of competent  jurisdiction for a preliminary and permanent  injunction
as well as any other relief  provided at law,  equity,  under this  Agreement or
otherwise,  without the necessity of posting any bond or providing any security.
In the event any of the foregoing  restrictions are adjudged unreasonable in any
proceeding,  then the parties agree that the period of time or the scope of such
restrictions (or both) shall be adjusted to such a manner or for such a time (or
both) as is adjudged to be reasonable.


                                      - 9 -

<PAGE>



     4.6 PRIOR COMPANIES. The Employee agrees to indemnify and hold harmless the
Company, its officers, directors, and employees from and against any liabilities
and expenses, including attorney's fees and amounts paid in settlement, incurred
by any of  them in  connection  with  any  claim  that  the  termination  of his
employment with any prior employer, his employment with the Company, or that the
use of any skills or knowledge by the Company is a violation of contract or law.
Employee  shall be entitled to  participate in the defense of any claim pursuant
to which  indemnity is sought  under this  Section 4.6. If at any time  Employee
acknowledges  in  writing  that  the  claim is fully  indemnifiable  under  this
Agreement,  Employee  shall have the right to assume total control of such claim
at his own expense.  Employee hereby represents,  warrants, and covenants to the
Company  that (a) he is not bound by any  agreement  with any prior  employer or
other party to refrain from using or disclosing any confidential  information or
from  competing  with the  business  of such  employer or other  party,  (b) his
performance under this Agreement will not breach any other agreement by which he
is bound, and (c) he has not brought with him to the Company,  nor will he bring
or use in the performance of his  responsibilities at the Company, any materials
or  documents  of a former  employer  which are not  generally  available to the
public.

     4.7  REMEDIES  FOR BREACH.  The Employee  acknowledges  that the  covenants
contained in Article IV of this Agreement are independent covenants and that any
failure by the Company to perform its  obligations  under this Agreement  (other
than the act of nonpayment  which is not cured by the Company within thirty (30)
days of the receipt of written notice of said condition from the Employee) shall
not be a defense to  enforcement  of the  covenants  contained  in  Article  IV,
including  but not  limited to a temporary  or  permanent  injunction.  Employee
agrees to reimburse  Company for all costs and  expenses,  including  reasonable
attorney's fees, incurred by Company because of any breach of this Article.

     4.8  AFFILIATES.  For purposes of this Article IV, the term "Company" shall
be deemed to include IHS and all of the  Company's  and IHS's  subsidiaries  and
affiliates now existing or hereafter becoming subsidiaries or affiliates.


                                     - 10 -

<PAGE>



                                    ARTICLE V

                                   ASSIGNMENT

     5.1  PROHIBITION OF EMPLOYEE  ASSIGNMENT.  The Employee agrees on behalf of
the Employee and the Employee's heirs and executors,  personal  representatives,
and any other  person or persons  claiming  any  benefit  under the  Employee by
virtue of this  Agreement,  that this Agreement and the rights,  interests,  and
benefits hereunder shall not be assigned,  transferred,  pledged or hypothecated
in any way by the  Employee or the  Employee's  heirs,  executors  and  personal
representatives.  Any  attempt  to  assign,  transfer,  pledge,  hypothecate  or
otherwise  dispose of this Agreement or any such rights,  interests and benefits
thereunder  contrary  to the  foregoing  provision,  shall  be null and void and
without effect and shall relieve the Company of any and all liability hereunder,
except for Company's obligation to pay earned salary and bonus.

     5.2 RIGHT OF COMPANY TO ASSIGN.  This  Agreement  shall be  assignable  and
transferable   by  the  Company  to  Company's   transferee,   assignee  or  any
successor-in-interest, parent, subsidiary or affiliate of Company (provided that
no  such  assignment  shall  relieve  Company  of its  obligations  to  Employee
hereunder  absent a written release signed by Employee),  and shall inure to the
benefit of and be binding upon the Employee,  the Employee's  heirs and personal
representatives, and the Company and its successors and assigns. Employee agrees
to execute all documents necessary to ratify and effectuate such assignment.

     5.3  BINDING  EFFECT  IF  TRANSFERRED.  In  the  event  this  Agreement  is
transferred  by Company,  the term  "Company"  used herein shall refer to and be
binding upon the Company's transferee or assignee.


                                   ARTICLE VI

                                     GENERAL

     6.1 PRIOR EMPLOYMENT AGREEMENTS.  Employee represents and warrants that any
employment agreement or arrangement with the Company or any other party has been
terminated as of the date hereof.


                                     - 11 -

<PAGE>



     6.2 GOVERNING LAW. This  Agreement  shall be subject to and governed by the
laws of the State of Maryland.

     6.3 BINDING  EFFECT.  This Agreement shall be binding upon and inure to the
benefit of the  Company  and the  Employee  and their  respective  heirs,  legal
representatives, executors, administrators, successors and permitted assigns.

     6.4 ENTIRE  AGREEMENT.  This  Agreement  constitutes  the entire  Agreement
between the parties and contains all of the agreements  between the parties with
respect to the subject matter hereof, and this Agreement  supersedes any and all
other  agreements,  either oral or in writing,  between the parties  hereto with
respect to the subject hereof. No change or modification of this Agreement shall
be valid  unless the same be in writing and signed by both  parties  hereto.  No
waiver of any provisions of this Agreement  shall be valid unless in writing and
signed by the person or party to be charged.

     6.5 SEVERABILITY. If any portion of this Agreement shall be for any reason,
invalid or unenforceable,  the remaining portion or portions shall  nevertheless
be valid,  enforceable  and carried into effect,  unless to do so would  clearly
violate the present legal and valid intention of the parties hereto.

     6.6 NOTICES. All notices, demands, requests,  consents,  approvals or other
communications  required or permitted hereunder shall be in writing and shall be
delivered by hand, registered or certified mail with return receipt requested or
by a nationally  recognized  overnight  delivery service,  in each case with all
postage or other delivery  charges  prepaid,  and to the address of the party to
whom it is directed as indicated  below,  or to such other address as such party
may specify by giving notice to the other in  accordance  with the terms hereof.
Any such notice shall be deemed to be received (i) when  delivered,  if by hand,
(ii) on the  next  business  day  following  timely  deposit  with a  nationally
recognized  overnight delivery service, or (iii) on the date shown on the return
receipt as received or refused or on the date the postal  authorities state that
delivery cannot be accomplished, if sent by registered or certified mail, return
receipt requested.


                                     - 12 -

<PAGE>



IF TO THE COMPANY:            Rotech Medical Corporation
                              c/o Integrated Health Services, Inc.
                              10065 Red Run Boulevard
                              Owings Mills, MD 21117
                              Attention: General Counsel

IF TO THE EMPLOYEE:           Stephen P. Griggs

                              ____________________________________
                              ____________________________________


     6.7 INDEPENDENT LEGAL COUNSEL. Employee represents and warrants that he has
had the  opportunity  to seek the advice of  independent  legal counsel prior to
signing  this  Agreement,  and that the Company has  recommended  to him that he
obtain such counsel.

     6.8 COUNTERPARTS.  This Agreement may be executed in several  counterparts,
each of which  shall be  deemed an  original,  and all of which  shall  together
constitute one and the same instrument.



                                     - 13 -

<PAGE>



     IN WITNESS  WHEREOF,  the Company has caused this Agreement to be signed by
its duly authorized officers,  and the Employee has hereunto set Employee's hand
on the day and year first above written.

ROTECH MEDICAL CORPORATION                                    EMPLOYEE


By:                          
   -------------------------------               -------------------------------
Title:                                                 Stephen P. Griggs
      ---------------------------




                                     - 14 -

<PAGE>





                                    EXHIBIT A
                              PERMITTED BUSINESSES







                                     - 15 -

<PAGE>


                                    EXHIBIT B


BONUS:                           $500,000  or a pro  rata  portion  thereof  for
                                 partial  years.  Bonus  to be  paid  if the net
                                 income target  (indicated below) is achieved or
                                 exceeded.

TARGET:                          Rotech and its subsidiaries  shall be deemed to
                                 generate a net income contribution to IHS equal
                                 to 15,800,000 (the "Share  Factor")  multiplied
                                 by  IHS's  budgeted  GAAP  earnings  per  share
                                 ("EPS") for the bonus  period.  IHS's  budgeted
                                 EPS shall be as follows:

                                 Fiscal period ending:

                                 December 31, 1997:   0.68
                                 December 31, 1998:   3.00
                                 December 31, 1999:   3.51
                                 December 31, 2000:   4.11
                                 December 31, 2001:   4.81
                                 December 31, 2002:   5.63

                                 The Share Factor will be subject to increase if
                                 additional  shares  of  IHS  common  stock  are
                                 issued   in   connection    with    post-merger
                                 acquisitions by Rotech.

                                 Example:  IHS 1998  budgeted  EPS is $3.00  per
                                 share;  therefore,  Rotech's net income  target
                                 for 1998 is  $47,400,000  (i.e.,  15,800,000  x
                                 $3.00).  Net income is calculated in accordance
                                 with  GAAP  based  on IHS  lives  for  goodwill
                                 amortization and depreciation.  Rotech goodwill
                                 includes  all  purchase  accounting   goodwill.
                                 Income taxes will be  calculated  on the income
                                 generated by Rotech and its subsidiaries.

ADDITIONAL BONUS:                An additional  bonus,  to be determined by IHS,
                                 will be paid if Rotech  exceeds  the net income
                                 target.



                                     - 16 -



        AGREEMENT (the "Agreement"), executed on July __, 1997, effective as of
the closing date of the merger  between RoTech  Medical  Corporation,  a Florida
corporation,  (the "Company") and Integrated  Health Services, Inc. ("IHS") (the
"Effective Date") among William P. Kennedy ("Kennedy"), the Company and IHS.

        WHEREAS,  the  Company   simultaneously  with  the  execution  of  this
Agreement has entered into a merger  agreement with IHS whereby the Company will
become a wholly owned subsidiary of IHS (the "Merger Agreement");

         WHEREAS,  Kennedy is Chairman of the Board of  Directors of the Company
(the "Board"), a member of the Board, Chief Executive Officer, an employee and a
stockholder of the Company;

         WHEREAS,  Kennedy,  the Company and IHS  mutually  desire to  terminate
Kennedy's  employment  with the Company on the Effective  Date and to enter into
certain other  arrangements  between Kennedy and the Company,  and Kennedy,  the
Company and IHS  mutually  desire to take  certain  other  actions  contemplated
herein, upon the terms and conditions contained herein;

         NOW,  THEREFORE,  in  consideration  of the  mutual  agreements  of the
parties hereto contained herein and other good and valuable  consideration,  the
receipt and  sufficiency of which is hereby  acknowledged,  and in reliance upon
the  representations  of the other parties hereto contained herein,  each of the
parties hereto agrees as follows:


<PAGE>

         1. RESIGNATIONS OF KENNEDY.  Effective  immediately after the effective
time of the merger  contemplated  by the  Merger  Agreement  ("Effective  Time")
Kennedy shall resign all appointments he holds as a director,  officer, employee
or agent of the  Company.  On the  Effective  Date,  Kennedy  shall  execute and
deliver to the Company a letter of resignation  from all  appointments  he holds
with the Company  substantially in the form of Exhibit A hereto.  From and after
the Effective Date, Kennedy shall not be and not hold himself out as a director,
officer,  employee,  agent or consultant of the Company  (except as permitted by
paragraph 2 hereto) and shall  relinquish,  except as otherwise  provided herein
all rights to any additional  payments from the Company under any plan,  program
or policy maintained by the Company (other than any accrued  entitlements  under
the  provisions  of the  Company's  401(k) plan and group  medical plan) for the
benefit of Company employees.

         2. CONSULTING ARRANGEMENT. (a) From the Effective Date, until the third
anniversary thereof (the "Consulting Term"), the Company shall engage Kennedy to
serve  as  a  consultant  to  the  Company,  and  Kennedy  hereby  accepts  such
engagement.

         (b) During the Consulting  Term,  Kennedy shall furnish such consulting
and advisory services to the Company as the Company may reasonably  request (and
only such consulting and advisory  services as the Company shall so request) and
shall report directly to the Board, (unless the Board shall decide otherwise) or
a designee of the Board.  During the Consulting Term Kennedy's services shall be
available to the Company as follows:

         First through twelfth month                 3 days/week
         Thirteenth through twenty-fourth            2 days/week
         Twenty-fifth through thirty-sixth           1 day/week


                                        2

<PAGE>

         (c) As compensation for the consulting services rendered hereunder, the
Company  shall pay to  Kennedy a  consulting  fee in a single sum  payable  upon
execution  of this  Agreement  in the amount of  $1,000,000.  In  addition,  the
Company shall reimburse  Kennedy for all reasonable and necessary  out-of-pocket
expenses incurred by him in connection with the consulting and advisory services
he  performs  at the  request of the  Company  pursuant  to the  Agreement  upon
presentation  of proper  vouchers  evidencing such expenses and the purposes for
which they were incurred.

         (d) In  performing  his duties as a  consultant,  Kennedy shall be, and
only hold himself out as, an independent contractor. The Company shall not treat
Kennedy as an employee of the Company or withhold  any  federal,  state or local
taxes of any  nature on  behalf  of  Kennedy  from the  compensation  to be paid
hereunder.  Nothing  contained  herein shall make  Kennedy the agent,  employee,
joint  venturer or partner of the Company or provide  Kennedy  with the power or
authority to bind the Company to any contract, agreement or arrangement with any
person or entity.

         3.       NONCOMPETITION.

         (a) Disclosure. Kennedy has disclosed to the Board and IHS, in writing,
all healthcare-related interests,  investments, or business activities,  whether
as proprietor,  stockholder, partner, co-venturer,  director, officer, employee,
independent contractor,  agent,  consultant,  or in any other capacity or manner
whatsoever,  including but not limited to Thayers Pharmacy,  Inc., Nephron Corp.
or Select Health of South Carolina, Inc.

         (b) Prohibited  Activity  Without the written  consent of a majority of
the Board of the Company, Kennedy may not for a period of fifteen years from the
date hereof, engage in

                                        3

<PAGE>

any of the following  actions  following the  termination of his employment with
the Company:  (i) own,  participate  or serve,  either  directly or  indirectly,
whether as a proprietor,  stockholder, partner, co-venturer,  director, officer,
employee, independent contractor, agent, consultant, or in any other capacity or
manner  whatsoever  in any  business  or service  activity  that  engages in the
"Primary  Business"  in  which  IHS,  the  Company  or any of  their  respective
subsidiaries  or  affiliates  is engaged,  within a radius of 100 miles from any
site, facility, or location which is owned, managed or operated by or affiliated
with IHS or the Company or any of their  respective  subsidiaries and affiliates
currently  or within  60 months of the  Effective  Date.  For  purposes  of this
Agreement,  "Primary  Business"  shall  mean  the  business  of  providing  home
respiratory  therapy,  home infusion  therapy,  and other  medical  services and
equipment to patients  referred by physicians or other services  related to home
respiratory therapy and home infusion therapy.

         (ii) directly or indirectly, solicit or recruit any individual employed
by the Company, its subsidiaries or affiliates for the purpose of being employed
directly  or  indirectly  by him or by any  competitor  of the  Company on whose
behalf he is  acting as an agent,  representative  or  employee,  or convey  any
confidential  information  or trade  secrets  regarding  other  employees of the
Company, its subsidiaries or affiliates to any other person; or

         (iii)  directly  or  indirectly,  influence  or  attempt  to  influence
customers  of the Company or any of its  subsidiaries  or  affiliates  to direct
their business to any competitor of the Company; provided, however, that neither
(i) the "beneficial ownership" by Kennedy, either individually or as a member of
a "group," as such terms are used in Rule 13d under

                                        4

<PAGE>

the Exchange Act, as a passive investment, of not more than five percent (5%) of
the voting  stock of any  publicly  held  corporation,  nor (ii) the  beneficial
ownership by Kennedy of any interest  described in the first sentence of Section
3(a) and properly and timely disclosed in accordance with the terms therewith so
long  as  the  entity  in  which  he  holds  such  beneficial  interest  is  not
participating  in the Primary  Business,  shall alone  constitute a violation of
this Agreement.

         (c) Post Employment  Services.  Notwithstanding  anything  contained in
Section 3(a) and (b) above to the contrary,  following the fifth  anniversary of
the Effective  Date and for the remainder of the term of this Section 3, Kennedy
may provide consulting  services to any business whether or not it competes with
the Primary Business.

         (d)  Noncompete  Compensation.  As  compensation  for entering into the
noncompete  provided  hereunder,  the  Company  shall pay to  Kennedy a fee in a
single sum payable upon execution of this Agreement in the amount of $4,000,000.

         (c) Injunctive  Relief. It is expressly agreed that the Company will or
would suffer  irreparable  injury if Kennedy were to compete with the Company or
any subsidiary or affiliate in violation of this Agreement or violate  Section 4
below and that the Company would by reason of such  competition  or violation be
entitled  to  preliminary  or  injunctive  relief  in  a  court  of  appropriate
jurisdiction,  and Kennedy further  consents and stipulates to the entry of such
preliminary  or  injunctive  relief  in such a court  prohibiting  Kennedy  from
competing  with the Company or any  subsidiary  or  affiliate  of the Company or
otherwise  acting in violation of this Agreement upon an appropriate  finding by
such court that Kennedy has violated this Section 3 or 4.

                                        5

<PAGE>

         4.  CONFIDENTIALITY.  (a) Except as otherwise  required by law, each of
the  parties  hereto  shall keep the terms of this  Agreement  confidential.  In
addition,  Kennedy shall keep  confidential  all information of a proprietary or
confidential  nature  belonging  to the  Company or any of its  subsidiaries  or
affiliates, including, but not limited to, business plans, files, records, data,
documents,  plans, research,  development,  policies,  customer or client lists,
price lists, the name and address of suppliers, customers or representatives, or
any other matters of any kind or description, relating to the products, devices,
suppliers,  customers, clientele, sales or business of the Company or any of its
subsidiaries or affiliates, and shall promptly return to the Company all written
material  and  information  that is, or comes into his  possession  or dominion,
concerning  the Company or the  business of the Company or its  subsidiaries  or
affiliates.

         5. PUBLIC  STATEMENTS.  Neither IHS nor the Company or their respective
subsidiaries  or  affiliates  shall  disparage  Kennedy,  and Kennedy  shall not
disparage the Company, IHS or any of their respective subsidiaries or affiliates
or their respective officers, directors, employees, partners or stockholders, at
any time, in any manner or in any respect;  provided,  that nothing contained in
this  Agreement  shall restrict the parties hereto from making any statements or
disclosures  believed necessary to enforce in any judicial or similar proceeding
the  provisions  of this  Agreement  or as a party  believes  may be required by
applicable law.

         6. FULL  SETTLEMENT;  LEGAL FEES. The Company's  obligation to make the
payments provided for in this Agreement and otherwise to perform its obligations
hereunder  shall  not be  affected  by any  set-off,  counterclaim,  recoupment,
defense or other claim, right

                                        6

<PAGE>

or action  which the Company  may have  against  Kennedy or others.  In no event
shall Kennedy be obligated to seek other  employment or take any other action by
way of mitigation of the amounts payable to  Kennedy under any of the provisions
of this  Agreement and such amounts shall not be reduced  whether or not Kennedy
obtains other  employment.  The Company  agrees to pay as incurred,  to the full
extent  permitted  by law,  all  legal  fees  and  expenses  which  Kennedy  may
reasonably incur as a result of any contest  (regardless of the outcome thereof)
of the validity or  enforceability  of, or liability  or  entitlement  under any
provision of this Agreement or any guarantee of performance thereof, unless such
contest is against IHS, the Company or any of their  respective  subsidiaries or
affiliates,  in which case, each party shall pay their respective costs incurred
in  connection  with such  contest,  provided,  however,  that to the extent any
arbitrator  or court  shall  determine  that  Kennedy  has  prevailed  as to the
material  issues raised in  determination  of the dispute,  the Company shall as
soon as  practicable,  but in no  event  later  than 30 days  from  the  date of
determination  of such  arbitrator  or court,  reimburse  Kennedy  for his costs
incurred in connection with such contest.

         7.  CERTAIN  EFFECTS.   The  invalidity  or   unenforceability  of  any
paragraph,  term or  provision  of this  Agreement  shall in no way  affect  the
validity or enforceability of the remaining paragraphs,  terms and provisions of
this Agreement.  In the event of any such invalidity or unenforceability,  it is
the parties'  hereto  intention and agreement that any such  paragraph,  term or
provision  which  is held or  determined  to be  invalid  or  unenforceable,  as
written,  shall  nonetheless  be in force  and  binding  to the  fullest  extent
permitted by law as though such paragraph, term or provision had been written in
such  a  manner  and  to  such  an  extent  as  to  be  enforceable   under  the
circumstances. Without limiting the foregoing, with

                                        7

<PAGE>

respect to any  confidentiality  requirement or restrictive  covenant  contained
herein,  if it is determined that any such provision is excessive as to duration
or scope,  it is intended  that it  nevertheless  be enforced  for such  shorter
duration or with such narrower scope as will render it enforceable.

         8.  EXPENSES.  The  Company  shall pay all legal  expenses  incurred by
Kennedy with respect to this Agreement up to a maximum amount of $7,500.00.

         9. SPLIT-DOLLAR LIFE INSURANCE.  The Company shall continue to maintain
and fund two split dollar life  insurance  policies,  each with a face amount of
Ten Million  Dollars  ($10,000,000)  ($20,000,000 in the aggregate) on the joint
lives of the Executive and the  Executive's  spouse in accordance with the terms
of the Split  Dollar  Agreements,  each dated as of December 8, 1995 between the
Company and Steven G. Bissinger,  as Trustee of the W.P.K.  Irrevocable  Trust I
and as Trustee of W.P.K. Irrevocable Trust II, each dated November 24, 1995 (the
"Split-Dollar  Agreements") and the respective  funding schedules  applicable to
each agreement  (copies of the Agreements and respective  funding  schedules are
attached hereto as Exhibit A). Notwithstanding  anything in the Agreement to the
contrary,  the  obligation of the Company and any successor  thereto to maintain
and fund the obligations  under the split Dollar Agreements shall be independent
of any  obligations  of Kennedy under this Agreement and shall be binding on the
Company and any successors  (including,  but not limited to, IHS and any and all
its successors)  thereto for the entire period set forth in the funding schedule
attached hereto.

         10. NOTICES. All notices,  consents and other communications under this
Agreement  shall be in writing  and shall be deemed to have been duly given when

                                        8

<PAGE>



(a)  delivered  by  hand,  (b)  sent  by  telecopier  or  mailed,  certified  or
registered, return receipt requested, or (c) when received by addressee, if sent
by Express Mail,  Federal  Express or other express  delivery  service  (receipt
requested),  in each case to the appropriate addresses or telecopier numbers set
forth below (or to such other  addresses and  telecopier  numbers as a party may
designate  as to  himself  or itself or by notice to the other  parties):

                     If to Kennedy:

                               William P. Kennedy
                               220 Prismen Terrace
                               Winter Park, Florida 32789


                               If to any other party hereto:

                               Integrated Health Services, Inc.
                               10065 Red Run Boulevard
                               Owings Mills, Maryland  21117

                               Attention: Taylor Pickett
                                          Executive Vice President

                                          Marshall Elkins
                                          General Counsel


                               with a copy to:

                                          Blass & Driggs
                                          461 5th Avenue
                                          New York, N.Y. 10017

                                          Attention: Michael F. Blass



         11.  ENTIRE  AGREEMENT.  This  Agreement  is  intended  to express  the
complete agreement and understanding among the parties hereto on the matters set
forth

                                        9

<PAGE>

herein and to supersede any and all other agreements and understandings, whether
oral or written,  between or among the  parties  hereto on the matters set forth
herein.

         12.  BINDING  EFFECT.  The rights and  obligations of the parties under
this  Agreement  shall inure to the  benefit of and shall be binding  upon their
respective heirs, successors and legal representatives.

         13.  AMENDMENTS.  This Agreement shall be amended or modified only by a
written  instrument  signed by the parties  hereto.  Nothing in this  Agreement,
expressed or implied,  is intended to confer upon any third person any rights or
remedies under or by reason of this Agreement.

         14. SUCCESSORS.

         (a) This Agreement is personal to Kennedy and without the prior written
consent of the Company shall not be assignable by Kennedy otherwise than by will
or the laws of descent  and  distribution.  This  Agreement  shall  inure to the
benefit of and be enforceable by Kennedy's legal representatives.

         (b) This  Agreement  shall inure to the benefit of and be binding  upon
the Company and IHS and its successors and assigns.

         (c) The Company and IHS will require any successor  (whether  direct or
indirect,   by  purchase,   merger,   consolidation  or  otherwise)  to  all  or
substantially all of the business and/or assets of the Company and IHS to assume
expressly and agree to perform this Agreement in the same manner and to the same
extent  that the  Company  and IHS would be  required  to  perform it if no such
succession had taken place.

                                       10

<PAGE>

         15.  GOVERNING LAW. This Agreement shall be construed under the laws of
the State of Florida  applicable  to agreements  made and to be performed  fully
therein, without regard to its conflicts of laws rules.

         16.  COUNTERPARTS.  This  Agreement  may be  executed  in  one or  more
counterparts, all of which shall be considered one and the same agreement.

         17. SPECIFIC  PERFORMANCE.  The parties hereto  acknowledge  that money
damages may be an inadequate remedy for breach of this Agreement. Therefore, the
parties  agree  that  any  party  may,  in its  sole  discretion,  apply  to any
applicable  court of competent  jurisdiction to obtain  specific  performance of
this Agreement and injunctive  relief against any breach hereof,  in either case
without the posting of any bond or other security.

         18.  COOPERATION.  Kennedy  shall  cooperate  with the  Company  (at no
expense to the Company) in  connection  with his  transition  from  Chairman and
Chief Executive  Officer to a consultant.  Additionally,  each of the parties to
this  Agreement  shall  execute and deliver any and all other  documents  deemed
necessary by counsel to the Company or IHS to effectuate  the terms,  conditions
or intent hereof.

         19.   TERMINATION  OF  THE  MERGER  AGREEMENT.   This  Agreement  shall
automatically terminate if and when the Merger Agreement is terminated.

                                       11

<PAGE>

         IN WITNESS WHEREOF,  the parties have executed this Agreement as of the
date first written above.



                                        ----------------------------------------
                                        William P. Kennedy

WITNESS:



- -----------------------------
Name:

                                        RoTech Medical Corporation


                                        By:
                                               ---------------------------------
                                        Title:


WITNESS:



- -----------------------------
Name:

                                        Integrated Health Services, Inc.





                                        By:
                                                --------------------------------
                                        Title:



WITNESS:



- -----------------------------
Name:

                                       12

<PAGE>

                                    EXHIBIT A


                                                             As of July __, 1997


To the Board of Directors of RoTech:

                  Effective  immediately,  I hereby  resign as  chairman  of the
board, as a member of the board of directors,  as chief executive officer and as
an employee of the Company and its subsidiaries.







                                        ----------------------------------------
                                        William P. Kennedy



                                       13



         AGREEMENT (the "Agreement"), executed on July __, 1997, effective as of
the closing date of the merger  between RoTech  Medical  Corporation,  a Florida
corporation,  (the "Company") and Integrated  Health Service,  Inc. ("IHS") (the
"Effective Date") among Rebecca R. Irish ("Irish"), the Company and IHS.

         WHEREAS,  the  Company   simultaneously  with  the  execution  of  this
Agreement has entered into a merger  agreement with IHS whereby the Company will
become a wholly owned subsidiary of IHS;

         WHEREAS,  Irish is Chief Financial Officer of the Company,  an employee
and a stockholder of the Company;

         WHEREAS,  Irish,  the  Company  and IHS  mutually  desire to  terminate
Irish's  employment  with the  Company on the  Effective  Date and to enter into
certain other arrangements between Irish and the Company, and Irish, the Company
and IHS mutually desire to take certain other actions  contemplated herein, upon
the terms and conditions contained herein;

         NOW,  THEREFORE,  in  consideration  of the  mutual  agreements  of the
parties hereto contained herein and other good and valuable  consideration,  the
receipt and  sufficiency of which is hereby  acknowledged,  and in reliance upon
the  representations  of the other parties hereto contained herein,  each of the
parties hereto agrees as follows:

         1. RESIGNATIONS OF IRISH.  Effectively  immediately after the effective
time of the merger  contemplated  by the Merger  Agreement  ("Effective  Time"),
Irish shall resign all


<PAGE>

appointments  she holds as a officer,  employee or agent of the Company.  On the
Effective  Date,  Irish  shall  execute  and  deliver to the Company a letter of
resignation from all  appointments  she holds with the Company  substantially in
the form of Exhibit A hereto. From and after the Effective Date, Irish shall not
be and not hold herself out as a officer,  employee,  agent or consultant of the
Company (except as permitted by paragraph 2 hereto) and shall relinquish, except
as otherwise  provided  herein all rights to any  additional  payments  from the
Company under any plan,  program or policy maintained by the Company (other than
any accrued  entitlements  under the provisions of the Company's 401(k) plan and
group medical plan) for the benefit of Company employees.

         2.  CONSULTING  ARRANGEMENT.  (a) From the  Effective  Date,  until the
second  anniversary  thereof (the "Consulting  Term"),  the Company shall engage
Irish to serve as a  consultant  to the Company,  and Irish hereby  accepts such
engagement.

         (b) During the Consulting Term, Irish shall furnish such consulting and
advisory services to the Company as the Company may reasonably request (and only
such consulting and advisory services as the Company shall so request) and shall
report directly to the Board of Directors of the Company (the "Board"),  (unless
the Board  shall  decide  otherwise)  or a  designee  of the  Board.  During the
Consulting Term Irish's services shall be available to the Company as follows:

         First through twelfth month                   24 hours/week
         Thirteenth through twenty-fourth month        16 hours/week

         (c) As compensation for the consulting services rendered hereunder, the
Company  shall  pay to Irish a  consulting  fee in a  single  sum  payable  upon
execution of this Agreement in the amount of $250,000. In addition,  the Company
shall reimburse Irish for all

                                        2

<PAGE>

reasonable and necessary  out-of-pocket  expenses  incurred by her in connection
with the  consulting  and  advisory  services she performs at the request of the
Company  pursuant  to  the  Agreement  upon   presentation  of  proper  vouchers
evidencing such expenses and the purposes for which they were incurred.

         (d) In performing her duties as a consultant,  Irish shall be, and only
hold  herself out as, an  independent  contractor.  The Company  shall not treat
Irish as an  employee of the Company or  withhold  any  federal,  state or local
taxes of any  nature  on  behalf  of  Irish  from  the  compensation  to be paid
hereunder.  Nothing contained herein shall make Irish the agent, employee, joint
venturer or partner of the Company or provide  Irish with the power or authority
to bind the Company to any contract, agreement or arrangement with any person or
entity.

         3.       NONCOMPETITION.

        (a)  Disclosure.  Irish has disclosed to the Board and IHS, in writing,
all healthcare-related interests,  investments, or business activities,  whether
as proprietor,  stockholder, partner, co-venturer,  director, officer, employee,
independent contractor,  agent,  consultant,  or in any other capacity or manner
whatsoever.

       (b) Prohibited  Activity  Without the written  consent of a majority of
the Board of the Company,  Irish may not for a period of fifteen  years from the
date hereof, engage in any of the following actions following the termination of
her employment with the Company:

         (i) own,  participate or serve, either directly or indirectly,  whether
as an officer,  employee,  independent contractor,  agent, consultant, or in any
other  capacity or manner  whatsoever  in any business or service  activity that
engages in the "Primary Business" in

                                        3

<PAGE>

which IHS, the Company or any of their respective  subsidiaries or affiliates is
engaged, within a radius of 100 miles from any site, facility, or location which
is owned, managed or operated by or affiliated with IHS or the Company or any of
their respective  subsidiaries  and affiliates  currently or within 60 months of
the Effective  Date. For purposes of this  Agreement,  "Primary  Business" shall
mean the business of providing home respiratory therapy,  home infusion therapy,
and other medical  services and equipment to patients  referred by physicians or
other services related to home respiratory therapy and home infusion therapy.

         (ii) directly or indirectly, solicit or recruit any individual employed
by the Company, its subsidiaries or affiliates for the purpose of being employed
directly  or  indirectly  by her or by any  competitor  of the  Company on whose
behalf  she is acting as an agent,  representative  or  employee,  or convey any
confidential  information  or trade  secrets  regarding  other  employees of the
Company, its subsidiaries or affiliates to any other person; or

        (iii)  directly  or  indirectly,  influence  or  attempt  to  influence
customers  of the Company or any of its  subsidiaries  or  affiliates  to direct
their business to any competitor of the Company; provided, however, that neither
(i) the "beneficial ownership" by Irish, either individually or as a member of a
"group," as such terms are used in Rule 13d under the Exchange Act, as a passive
investment,  of not more  than  five  percent  (5%) of the  voting  stock of any
publicly held  corporation,  nor (ii) the  beneficial  ownership by Irish of any
interest described in the first sentence of Section 3(a) and properly and timely
disclosed in accordance  with the terms therewith so long as the entity in which
he holds such beneficial

                                        4

<PAGE>

interest is not participating in the Primary Business,  shall alone constitute a
violation of this Agreement.

         (c) Post Employment  Services.  Notwithstanding  anything  contained in
Section 3(a) and (b) above to the contrary,  following the fifth  anniversary of
the  Effective  Date and for the  remainder of the term of this Section 3, Irish
may provide  services to any  business as an employee,  consultant,  independent
contractor or otherwise, whether or not it competes with the Primary Business.

         (d)  Noncompete  Compensation.  As  compensation  for entering into the
noncompete provided hereunder,  the Company shall pay to Irish a fee in a single
sum payable upon execution of this Agreement in the amount of $1,000,000.

         (e) Injunctive  Relief. It is expressly agreed that the Company will or
would suffer irreparable injury if Irish were to compete with the Company or any
subsidiary  or affiliate in  violation  of this  Agreement or violate  Section 4
below and that the Company would by reason of such  competition  or violation be
entitled  to  preliminary  or  injunctive  relief  in  a  court  of  appropriate
jurisdiction,  and Irish  further  consents and  stipulates to the entry of such
preliminary  or  injunctive  relief  in  such a  court  prohibiting  Irish  from
competing  with the Company or any  subsidiary  or  affiliate  of the Company or
otherwise  acting in violation of this Agreement upon an appropriate  finding by
such court that Irish has violated this Section 3 or 4.

         4.  CONFIDENTIALITY.  (a) Except as otherwise  required by law, each of
the  parties  hereto  shall keep the terms of this  Agreement  confidential.  In
addition,  Irish shall keep  confidential  all  information  of a proprietary or
confidential nature belonging to the Company

                                       5

<PAGE>

or any of its  subsidiaries  or  affiliates,  including,  but  not  limited  to,
business plans, files, records, data, documents,  plans, research,  development,
policies,  customer  or client  lists,  price  lists,  the name and  address  of
suppliers,  customers or  representatives,  or any other  matters of any kind or
description, relating to the products, devices, suppliers, customers, clientele,
sales or business of the Company, or any of its subsidiaries or affiliates,  and
shall promptly return to the Company all written  material and information  that
is, or comes into her  possession  or  dominion,  concerning  the Company or the
business of the Company or its subsidiaries or affiliates.

         5. PUBLIC  STATEMENTS.  Neither IHS nor the Company or their respective
subsidiaries or affiliates  shall disparage Irish, and Irish shall not disparage
the Company, IHS or any of their respective  subsidiaries or affiliates or their
respective  officers,  directors,  employees,  partners or stockholders,  at any
time, in any manner or in any respect;  provided, that nothing contained in this
Agreement  shall  restrict  the parties  hereto from  making any  statements  or
disclosures  believed necessary to enforce in any judicial or similar proceeding
the  provisions  of this  Agreement  or as a party  believes  may be required by
applicable law.

         6. FULL  SETTLEMENT;  LEGAL FEES. The Company's  obligation to make the
payments provided for in this Agreement and otherwise to perform its obligations
hereunder  shall  not be  affected  by any  set-off,  counterclaim,  recoupment,
defense or other claim, right or action which the Company may have against Irish
or others. In no event shall Irish be obligated to seek other employment or take
any other action by way of mitigation of the amounts playable to Irish under any
of the  provisions  of this  Agreement  and such  amounts  shall not be  reduced
whether or not Irish obtains other employment. The Company agrees to

                                        6

<PAGE>

pay as  incurred,  to the full  extent  permitted  by law,  all  legal  fees and
expenses which Irish may reasonably incur as a result of any contest (regardless
of the outcome  thereof) of the validity or  enforceability  of, or liability or
entitlement   under  any  provision  of  this  Agreement  or  any  guarantee  of
performance  thereof,  unless such contest is against IHS, the Company or any of
their respective subsidiaries or affiliates, in which case, each party shall pay
their  respective  costs  incurred in connection  with such  contest,  provided,
however,  that to the extent any arbitrator or court shall  determine that Irish
has prevailed as to the material issues raised in  determination of the dispute,
the  Company  shall as soon as  practicable,  but in no event later than 30 days
from the date of determination of such arbitrator or court,  reimburse Irish for
his costs incurred in connection with such contest.

         7. MEDICAL INSURANCE COVERAGE. On the Effective Date through the end of
the Consulting Term, the Company shall provide Irish and her eligible dependents
with medical,  dental,  health life  insurance and  long-term  disability  plans
applicable to Irish  immediately  prior to the Effective Date, on the same terms
and  conditions as in effect for Irish and her dependents  immediately  prior to
the Effective  Date;  provided that such  obligation  shall terminate upon Irish
obtaining  employment  which provides  welfare benefits which are not materially
less favorable in scope to what is provided to Irish pursuant to this Section 8.
Nothing  contained  in this  Section  8  shall  limit  Irish's  right  to  elect
continuation  coverage under the Consolidated Omnibus Budget  Reconciliation Act
of 1985 ("COBRA") upon her no longer being eligible for benefits pursuant to the
terms of this Section 8.

         8.  CERTAIN  EFFECTS.   The  invalidity  or   unenforceability  of  any
paragraph,  term or  provision  of this  Agreement  shall in no way  affect  the
validity or enforceability of the

                                        7

<PAGE>

remaining  paragraphs,  terms and provisions of this Agreement.  In the event of
any such invalidity or unenforceability, it is the parties' hereto intention and
agreement that any such paragraph, term or provision which is held or determined
to be invalid or  unenforceable,  as written,  shall nonetheless be in force and
binding to the fullest extent permitted by law as though such paragraph, term or
provision  had been  written  in such a manner  and to such an  extent  as to be
enforceable  under the  circumstances.  Without  limiting  the  foregoing,  with
respect to any  confidentiality  requirement or restrictive  covenant  contained
herein,  if it is determined that any such provision is excessive as to duration
or scope,  it is intended  that it  nevertheless  be enforced  for such  shorter
duration or with such narrower scope as will render it enforceable.

         9. NOTICES.  All notices,  consents and other communications under this
Agreement  shall be in writing  and shall be deemed to have been duly given when
(a)  delivered  by  hand,  (b)  sent  by  telecopier  or  mailed,  certified  or
registered, return receipt requested, or (c) when received by addressee, if sent
by Express Mail,  Federal  Express or other express  delivery  service  (receipt
requested),  in each case to the appropriate addresses or telecopier numbers set
forth below (or to such other  addresses and  telecopier  numbers as a party may
designate  as to  herself  or itself or by notice to the other  parties):  If to
Irish:

                              Rebecca R.Irish
                              530 East Central Boulevard
                              #1203
                              Orlando, Florida  32801




                                        8

<PAGE>



                   If to any other party hereto:

                              Integrated Health Services, Inc.
                              10065 Red Run Boulevard
                              Owings Mills, Maryland  21117

                              Attention: Taylor Pickett
                              Executive Vice President

                              Marshall Elkins
                              General Counsel

                    with a copy to:

                              Blass & Driggs
                              461 Fifth Avenue
                              New York, NY  10017

                              Attention:  Michael F. Blass

         10.  ENTIRE  AGREEMENT.  This  Agreement  is  intended  to express  the
complete agreement and understanding among the parties hereto on the matters set
forth herein and to supersede any and all other  agreements and  understandings,
whether oral or written,  between or among the parties hereto on the matters set
forth herein.

         11.  BINDING  EFFECT.  In the event of Irish's  death,  all amounts and
benefits payable hereunder shall be payable to her designated  beneficiary Casey
B. Irish.

         12.  AMENDMENTS.  This Agreement shall be amended or modified only by a
written  instrument  signed by the parties  hereto.  Nothing in this  Agreement,
expressed or implied,  is intended to confer upon any third person any rights or
remedies under or by reason of this Agreement.

                                        9

<PAGE>

         13. SUCCESSORS.

         (a) This  Agreement is personal to Irish and without the prior  written
consent of the Company shall not be assignable by Irish  otherwise  than by will
or the laws of descent  and  distribution.  This  Agreement  shall  inure to the
benefit of and be enforceable by Irish's legal representatives.

         (b) This  Agreement  shall inure to the benefit of and be binding  upon
the Company and IHS and its successors and assigns.

         (c) The Company and IHS will require any successor  (whether  direct or
indirect,   by  purchase,   merger,   consolidation  or  otherwise)  to  all  or
substantially all of the business and/or assets of the Company and IHS to assume
expressly and agree to perform this Agreement in the same manner and to the same
extent  that the  Company  and IHS would be  required  to  perform it if no such
succession had taken place.

         14.  GOVERNING LAW. This Agreement shall be construed under the laws of
the State of Florida  applicable  to agreements  made and to be performed  fully
therein, without regard to its conflicts of laws rules.

         15.  COUNTERPARTS.  This  Agreement  may be  executed  in  one or  more
counterparts, all of which shall be considered one and the same agreement.

         16. SPECIFIC  PERFORMANCE.  The parties hereto  acknowledge  that money
damages may be an inadequate remedy for breach of this Agreement. Therefore, the
parties  agree  that  any  party  may,  in its  sole  discretion,  apply  to any
applicable  court of competent  jurisdiction to obtain  specific  performance of
this Agreement and injunctive  relief against any breach hereof,  in either case
without the posting of any bond or other security.

                                       10

<PAGE>

         17. COOPERATION.  Irish shall cooperate with the Company (at no expense
to the Company) in connection with her transition  from Chief Financial  Officer
to a  consultant.  Additionally,  each of the  parties to this  Agreement  shall
execute and deliver any and all other documents  deemed  necessary by counsel to
the Company or IHS to effectuate the terms, conditions or intent hereof.

         18.   TERMINATION  OF  THE  MERGER  AGREEMENT.   This  Agreement  shall
automatically terminate if and when the Merger Agreement is terminated.

                                       11

<PAGE>

         IN WITNESS WHEREOF,  the parties have executed this Agreement as of the
date first written above.



                                 -----------------------------------------------
                                 Rebecca R.Irish

WITNESS:



- -----------------------------
Name:

                                 RoTech Medical Corporation


                                 By:
                                      ------------------------------------------
                                 Title:


WITNESS:



- -----------------------------
Name:

                                 Integrated Health Services Inc.





                                 By:
                                        ----------------------------------------
                                 Title:


WITNESS:



- -----------------------------
Name:


                                       12

<PAGE>

                                    EXHIBIT A


                                                            As of July __, 1997


To the Board of Directors of RoTech:

                  Effective  immediately,  I hereby  resign  as an  officer  and
director of the Company and its subsidiaries and as an employee of the Company.







                                 -----------------------------------------------
                                 Rebecca R.Irish


                                       13



     AGREEMENT (the "Agreement"),  executed and effective as of the closing date
of the merger between RoTech Medical Corporation,  a Florida  corporation,  (the
"Company") and Integrated  Health Service,  Inc. ("IHS") (the "Effective  Date")
among Stephen P. Griggs ("Griggs"), the Company and IHS.

     WHEREAS,  the Company has entered into a merger  agreement with IHS whereby
the  Company  will  become  a  wholly  owned  subsidiary  of  IHS  (the  "Merger
Agreement");

     WHEREAS,  Griggs is  President  of the Company and a member of the Board of
Directors of the Company (the "Board");

     WHEREAS,  Griggs,  the Company and IHS mutually  desire to enter into a new
employment agreement with Griggs (the "Employment Agreement");

     NOW,  THEREFORE,  in consideration of the mutual  agreements of the parties
hereto contained herein and other good and valuable  consideration,  the receipt
and  sufficiency  of which is  hereby  acknowledged,  and in  reliance  upon the
representations  of the  other  parties  hereto  contained  herein,  each of the
parties hereto agrees as follows:

     1. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

     (a) In the event it shall be determined that any payment or distribution by
the  Company  to or for the  benefit  of  Griggs  (whether  paid or  payable  or
distributed  or  distributable  pursuant to the terms of this  Agreement  or the
Employment  Agreement or any other  agreement  executed in  connection  with the
Merger Agreement, or otherwise,  but determined without regard to any additional
payments required under this Section 1) (a


<PAGE>

"Payment")  would be subject to the  excise tax  imposed by Section  4999 of the
Code or any corresponding provisions of state or local tax laws, or any interest
or penalties are incurred by Griggs with respect to such excise tax (such excise
tax, together with any such interest and penalties, are hereinafter collectively
referred to as the "Excise  Tax"),  then Griggs  shall be entitled to receive an
additional  payment (a "Gross-Up  Payment") in an amount such that after payment
by Griggs of all taxes (including any interest or penalties imposed with respect
to such  taxes),  including,  without  limitation,  any  income  taxes  (and any
interest and penalties imposed with respect thereto) and Excise Tax imposed upon
the Gross-Up Payment,  Griggs retains an amount of the Gross-Up Payment equal to
the Excise Tax imposed upon the Payments.

     (b) Subject to the provisions of Section 1(c), all determinations  required
to be made under this Section 1, including  whether and when a Gross-Up  Payment
is required and the amount of such Gross-Up  Payment and the  assumptions  to be
utilized in arriving at such  determination,  shall be made by Ernst & Young LLP
or such other  certified  public  accounting firm as may be designated by Griggs
(the "Accounting Firm"),  which shall provide detailed  supporting  calculations
both to the Company and Griggs  within 15 business days of the receipt of notice
from Griggs that there has been a Payment,  or such earlier time as is requested
by the Company.  In the event that the Accounting  Firm is serving as accountant
or  auditor  for the  individual,  entity or group  effecting  the merger of the
Company at IHS, Griggs shall appoint another  nationally  recognized  accounting
firm to make the determinations  required hereunder (which accounting firm shall
then be referred to as the Accounting Firm  hereunder).  All reasonable fees and
expenses of the Accounting Firm shall

                                        2

<PAGE>

be borne solely by the Company.  Any Gross-Up Payment, as determined pursuant to
this  Section 1, shall be paid by the Company to Griggs  within five days of the
receipt  of  the  Accounting  Firm's  determination.  Any  determination  by the
Accounting Firm shall be binding upon the Company and Griggs. As a result of the
uncertainty  in the  application  of Section 4999 of the Code at the time of the
initial  determination  by the Accounting  Firm  hereunder,  it is possible that
Gross-Up  Payments which will not have been made by the Company should have been
made  ("Underpayment"),  consistent  with the  calculations  required to be made
hereunder.  In the event that the  Company  exhausts  its  remedies  pursuant to
Section 1(c) and Griggs  thereafter  is required to make a payment of any Excise
Tax, the Accounting firm shall determine the amount of the Underpayment that has
occurred and any such  Underpayment  shall be promptly paid by the Company to or
for the benefit of Griggs.

     (c) Griggs shall notify the Company in writing of any claim by the Internal
Revenue Service that, if successful, would require the payment by the Company of
the Gross-Up Payment.  Such  notification  shall be given as soon as practicable
but no later than ten business  days after Griggs is informed in writing of such
claim and shall  apprise the Company of the nature of such claim and the date on
which such claim is requested to be paid.  Griggs shall not pay such claim prior
to the expiration of the 30-day period  following the date on which Griggs gives
such notice to the Company (or such shorter  period  ending on the date that any
payment of taxes with  respect to such claim is due).  If the  Company  notifies
Griggs in writing  prior to the  expiration  of such  period  that it desires to
contest such claim, Griggs shall:

                                        3

<PAGE>



              (i) give the Company any information  reasonably  requested by the
         Company relating to such claim,

              (ii) take such action in connection  with contesting such claim as
         the  Company  shall  reasonably  request in writing  from time to time,
         including,  without  limitation,  accepting legal  representation  with
         respect  to  such  claim  by an  attorney  reasonably  selected  by the
         Company.

              (iii)   cooperate   with  the  Company  in  good  faith  in  order
         effectively to contest such claim, and

              (iv) permit the Company to participate in any proceedings relating
         to such claim;

provided,  however,  that the Company  shall bear and pay directly all costs and
expenses  (including  additional  interest and penalties) incurred in connection
with such contest and shall indemnify and hold Griggs harmless,  on an after-tax
basis,  for any Excise Tax or income tax (including  interest and penalties with
respect thereto) imposed as a result of such representation and payment of costs
and expenses.  Without  limitation  on the foregoing  provisions of this Section
1(c), the Company shall control all  proceedings  taken in connection  with such
contest and, at its sole option,  may pursue or forgo any and all administrative
appeals,  proceedings,  hearings and  conferences  with the taxing  authority in
respect of such claim and may, at its sole option,  either  direct Griggs to pay
the tax  claimed  and sue for a refund or contest  the claim in any  permissible
manner,  and Griggs agrees to prosecute such contest to a  determination  before
any administrative  tribunal,  in a court of initial  jurisdiction and in one or
more appellate courts, as the Company shall determine; provided, however,

                                        4

<PAGE>

that if the Company  directs Griggs to pay such claim and sue for a refund,  the
Company shall advance the amount of such payment to Griggs,  on an interest-free
basis and shall indemnify and hold Griggs harmless,  in an after-tax basis, from
any Excise Tax or income tax  (including  interest  or  penalties  with  respect
thereto)  imposed  with  respect to such  advance or with respect to any imputed
income with respect to such advance;  and further provided that any extension of
the statute of limitations  relating to payment of taxes for the taxable year of
Griggs  with  respect  to which  such  contested  amount is claimed to be due is
limited solely to such contested amount.  Furthermore,  the Company's control of
the contest shall be limited to issues with respect to which a Gross-Up  Payment
would be payable hereunder and Griggs shall be entitled to settle or contest, as
the case may be, any other issue raised by the Internal  Revenue  Service or any
other taxing authority.

     (d) If,  after the  receipt by Griggs of an amount  advanced by the Company
pursuant to Section  1(c),  Griggs  becomes  entitled to receive any refund with
respect to such claim, Griggs shall (subject to the Company's complying with the
requirements  of Section  1(c)  promptly  pay to the  Company the amount of such
refund  (together  with  any  interest  paid or  credited  thereon  after  taxes
applicable  thereto).  If, after the receipt by Griggs of an amount  advanced by
the Company  pursuant to Section 1(c), a determination is made that Griggs shall
not be entitled to any refund  with  respect to such claim and the Company  does
not notify  Griggs in writing  of its  intent to contest  such  denial of refund
prior to the expiration of 30 days after such  determination,  then such advance
shall be forgiven  and shall not be required to be repaid and the amount of such
advance  shall offset,  to the extent  thereof,  the amount of Gross-Up  Payment
required to be paid.

                                        5

<PAGE>

     2.  CONFIDENTIALITY.  (a) Except as otherwise  required by law, each of the
parties hereto shall keep the terms of this Agreement confidential.

     3. FULL  SETTLEMENT;  LEGAL  FEES.  The  Company's  obligation  to make the
payments provided for in this Agreement and otherwise to perform its obligations
hereunder  shall  not be  affected  by any  set-off,  counterclaim,  recoupment,
defense or other  claim,  right or action  which the  Company  may have  against
Griggs or others. In no event shall Griggs be obligated to seek other employment
or take any other action by way of mitigation of the amounts  playable to Griggs
under any of the  provisions  of this  Agreement  and such amounts  shall not be
reduced  whether or not Griggs obtains other  employment.  The Company agrees to
pay as  incurred,  to the full  extent  permitted  by law,  all  legal  fees and
expenses  which  Griggs  may  reasonably  incur  as  a  result  of  any  contest
(regardless  of the outcome  thereof) of the validity or  enforceability  of, or
liability or entitlement  under any provision of this Agreement or any guarantee
of performance  thereof,  unless such contest is against IHS, the Company or any
of their respective subsidiaries or affiliates,  in which case, each party shall
pay their respective  costs incurred in connection with such contest,  provided,
however,  that to the extent any arbitrator or court shall determine that Griggs
has prevailed as to the material issues raised in  determination of the dispute,
the  Company  shall as soon as  practicable,  but in no event later than 30 days
from the date of determination of such arbitrator or court, reimburse Griggs for
his costs incurred in connection with such contest.

     4. CERTAIN EFFECTS.  The invalidity or  unenforceability  of any paragraph,
term or  provision  of this  Agreement  shall in no way affect the  validity  or
enforceability  of the  remaining  paragraphs,  terms  and  provisions  of  this
Agreement. In the event of any such

                                        6

<PAGE>

invalidity  or  unenforceability,  it  is  the  parties'  hereto  intention  and
agreement that any such paragraph, term or provision which is held or determined
to be invalid or  unenforceable,  as written,  shall nonetheless be in force and
binding to the fullest extent permitted by law as though such paragraph, term or
provision  had been  written  in such a manner  and to such an  extent  as to be
enforceable under the circumstances.

     5. EXPENSES.  The Company shall pay all legal  expenses  incurred by Griggs
with respect to this Agreement up to a maximum amount of $2,500.

     6. NOTICES.   All  notices,  consents and other  communications  under this
Agreement  shall be in writing  and shall be deemed to have been duly given when
(a)  delivered  by  hand,  (b)  sent  by  telecopier  or  mailed,  certified  or
registered, return receipt requested, or (c) when received by addressee, if sent
by Express Mail,  Federal  Express or other express  delivery  service  (receipt
requested),  in each case to the appropriate addresses or telecopier numbers set
forth below (or to such other  addresses and  telecopier  numbers as a party may
designate  as to  himself  or itself or by notice to the other  parties):

                If to Griggs:

                         Stephen P. Griggs





                         If to any other party hereto:

                         Integrated Health Services, Inc.
                         10065 Red Run Boulevard
                         Owings Mills, Maryland 21117

                                   Attention: Taylor Pickett
                                   Executive Vice President

                                        7

<PAGE>

                         Marshall Elkins
                         General Counsel


                with a copy to:

                         Blass & Driggs
                         461 5th Avenue
                         New York, N.Y. 10017

                         Attention: Michael F. Blass



     7. ENTIRE  AGREEMENT.  This  Agreement  is intended to express the complete
agreement and  understanding  among the parties  hereto on the matters set forth
herein and to supersede any and all other agreements and understandings, whether
oral or written,  between or among the  parties  hereto on the matters set forth
herein.

     8. BINDING  EFFECT.  The rights and  obligations  of the parties under this
Agreement  shall  inure to the  benefit  of and  shall  be  binding  upon  their
respective heirs, successors and legal representatives.

     9.  AMENDMENTS.  This  Agreement  shall be  amended or  modified  only by a
written  instrument  signed by the parties  hereto.  Nothing in this  Agreement,
expressed or implied,  is intended to confer upon any third person any rights or
remedies under or by reason of this Agreement.

     10. SUCCESSORS.

     (a) This  Agreement  is personal  to Griggs and  without the prior  written
consent of the Company shall not be assignable by Griggs  otherwise than by will
or the laws

                                        8

<PAGE>

of descent and distribution. This Agreement shall inure to the benefit of and be
enforceable by Griggs's legal representatives.

     (b) This  Agreement  shall inure to the benefit of and be binding  upon the
Company and IHS and its successors and assigns.

     (c) The  Company  and IHS will  require any  successor  (whether  direct or
indirect,   by  purchase,   merger,   consolidation  or  otherwise)  to  all  or
substantially all of the business and/or assets of the Company and IHS to assume
expressly and agree to perform this Agreement in the same manner and to the same
extent  that the  Company  and IHS would be  required  to  perform it if no such
succession had taken place.

     11.  GOVERNING LAW. This Agreement shall be construed under the laws of the
State  of  Florida  applicable  to  agreements  made and to be  performed  fully
therein, without regard to its conflicts of laws rules.

     12.   COUNTERPARTS.   This  Agreement  may  be  executed  in  one  or  more
counterparts, all of which shall be considered one and the same agreement.

     13. TERMINATION OF THE MERGER AGREEMENT. This Agreement shall automatically
terminate if and when the Merger Agreement is terminated.


                                        9

<PAGE>

     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date
first written above.


                                       -----------------------------------------
                                       Stephen P. Griggs

WITNESS:



- -----------------------------
Name:

                                       RoTech Medical Corporation


                                       By:
                                             -----------------------------------
                                       Title:


WITNESS:



- -----------------------------
Name:

                                       Integrated Health Services, Inc.





                                        By:
                                             -----------------------------------
                                        Title:


WITNESS:





                                       10



         AGREEMENT (the "Agreement"), executed on July __, 1997, effective as of
the closing date of the merger  between RoTech  Medical  Corporation,  a Florida
corporation,  (the "Company") and Integrated  Health Service,  Inc. ("IHS") (the
"Effective Date") among William P. Kennedy ("Kennedy"), the Company and IHS.

         WHEREAS,  the  Company   simultaneously  with  the  execution  of  this
Agreement has entered into a merger  agreement with IHS whereby the Company will
become a wholly owned subsidiary of IHS (the "Merger Agreement");

         WHEREAS,  Kennedy is Chairman of the Board of  Directors of the Company
(the "Board"), a member of the Board, Chief Executive Officer, an employee and a
stockholder of the Company;

         WHEREAS,  Kennedy,  the Company and IHS  mutually  desire to  terminate
Kennedy's  employment  with the Company on the Effective  Date and to enter into
certain other arrangements between Kennedy and the Company.

         NOW,  THEREFORE,  in  consideration  of the  mutual  agreements  of the
parties hereto contained herein and other good and valuable  consideration,  the
receipt and  sufficiency of which is hereby  acknowledged,  and in reliance upon
the  representations  of the other parties hereto contained herein,  each of the
parties hereto agrees as follows:

         1.  CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

         (a) In the event it shall be determined that any payment, investment or
distribution  by the  Company  to or for the  benefit  of  Kennedy or any entity
controlled by Kennedy

<PAGE>



(whether paid or payable or distributed or  distributable  pursuant to the terms
of this Agreement,  the Consulting  Agreement,  any other agreement  executed in
connection  with the Merger  Agreement,  or otherwise,  but  determined  without
regard to any additional  payments  required under this Section 1) (a "Payment")
would be subject to the  excise tax  imposed by Section  4999 of the Code or any
corresponding  provisions  of  state or  local  tax  laws,  or any  interest  or
penalties  are  incurred by Kennedy with respect to such excise tax (such excise
tax, together with any such interest and penalties, are hereinafter collectively
referred to as the "Excise  Tax"),  then Kennedy shall be entitled to receive an
additional  payment (a "Gross-Up  Payment") in an amount such that after payment
by Kennedy of all taxes  (including  any  interest  or  penalties  imposed  with
respect to such taxes), including, without limitation, any income taxes (and any
interest and penalties imposed with respect thereto) and Excise Tax imposed upon
the Gross-Up Payment, Kennedy retains an amount of the Gross-Up Payment equal to
the Excise Tax imposed upon the Payments.

         (b)  Subject to the  provisions  of Section  1(c),  all  determinations
required to be made under this Section 1, including  whether and when a Gross-Up
Payment is required and the amount of such Gross-Up  Payment and the assumptions
to be utilized in arriving at such determination, shall be made by Ernst & Young
LLP or such other  certified  public  accounting  firm as may be  designated  by
Kennedy  (the  "Accounting  Firm"),  which  shall  provide  detailed  supporting
calculations  both to the  Company and  Kennedy  within 15 business  days of the
receipt of notice from  Kennedy  that there has been a Payment,  or such earlier
time as is requested by the Company.  In the event that the  Accounting  Firm is
serving as accountant or auditor for the  individual,  entity or group effecting
the merger of

                                        2

<PAGE>

the  Company  at  IHS,  Kennedy  shall  appoint  another  nationally  recognized
accounting firm to make the determinations  required hereunder (which accounting
firm shall then be referred to as the Accounting Firm hereunder). All reasonable
fees and expenses of the  Accounting  Firm shall be borne solely by the Company.
Any Gross-Up Payment, as determined pursuant to this Section 1, shall be paid by
the Company to Kennedy within five days of the receipt of the Accounting  Firm's
determination.  Any  determination  by the Accounting Firm shall be binding upon
the Company and Kennedy.  As a result of the  uncertainty in the  application of
Section  4999  of the  Code  at the  time of the  initial  determination  by the
Accounting Firm hereunder,  it is possible that Gross-Up Payments which will not
have been made by the Company should have been made ("Underpayment"), consistent
with the  calculations  required  to be made  hereunder.  In the event  that the
Company exhausts its remedies pursuant to Section 1(c) and Kennedy thereafter is
required  to make a  payment  of any  Excise  Tax,  the  Accounting  firm  shall
determine  the  amount  of the  Underpayment  that  has  occurred  and any  such
Underpayment  shall be  promptly  paid by the  Company to or for the  benefit of
Kennedy.

         (c)  Kennedy  shall  notify the  Company in writing of any claim by the
Internal  Revenue Service that, if successful,  would require the payment by the
Company of the Gross-Up  Payment.  Such  notification  shall be given as soon as
practicable  but no later than ten  business  days after  Kennedy is informed in
writing of such claim and shall  apprise the Company of the nature of such claim
and the date on which such claim is requested to be paid.  Kennedy shall not pay
such claim prior to the  expiration of the 30-day  period  following the date on
which Kennedy gives such notice to the Company (or such shorter

                                        3

<PAGE>

period  ending on the date that any payment of taxes with  respect to such claim
is due). If the Company  notifies  Kennedy in writing prior to the expiration of
such period that it desires to contest such claim, Kennedy shall:

                   (i) give the Company any information  reasonably requested by
         the Company relating to such claim,

                  (ii) take such action in connection with contesting such claim
         as the Company shall  reasonably  request in writing from time to time,
         including,  without  limitation,  accepting legal  representation  with
         respect  to  such  claim  by an  attorney  reasonably  selected  by the
         Company.

                   (iii)  cooperate  with  the  Company  in good  faith in order
         effectively to contest such claim, and

                   (iv) permit the  Company to  participate  in any  proceedings
         relating to such claim;

provided,  however,  that the Company  shall bear and pay directly all costs and
expenses  (including  additional  interest and penalties) incurred in connection
with such contest and shall indemnify and hold Kennedy harmless, on an after-tax
basis,  for any Excise Tax or income tax (including  interest and penalties with
respect thereto) imposed as a result of such representation and payment of costs
and expenses.  Without  limitation  on the foregoing  provisions of this Section
1(c), the Company shall control all  proceedings  taken in connection  with such
contest and, at its sole option,  may pursue or forgo any and all administrative
appeals,  proceedings,  hearings and  conferences  with the taxing  authority in
respect of such claim and may, at its sole option,  either direct Kennedy to pay
the tax claimed and sue for a

                                        4

<PAGE>

refund or contest the claim in any  permissible  manner,  and Kennedy  agrees to
prosecute such contest to a determination before any administrative tribunal, in
a court of initial  jurisdiction  and in one or more  appellate  courts,  as the
Company shall determine;  provided, however, that if the Company directs Kennedy
to pay such claim and sue for a refund,  the Company shall advance the amount of
such payment to Kennedy,  on an interest-free basis and shall indemnify and hold
Kennedy  harmless,  in an  after-tax  basis,  from any  Excise Tax or income tax
(including  interest or penalties with respect  thereto) imposed with respect to
such advance or with respect to any imputed income with respect to such advance;
and further  provided that any extension of the statute of limitations  relating
to payment of taxes for the taxable  year of Kennedy  with respect to which such
contested  amount is  claimed  to be due is  limited  solely  to such  contested
amount.  Furthermore,  the Company's  control of the contest shall be limited to
issues with respect to which a Gross-Up  Payment would be payable  hereunder and
Kennedy  shall be entitled  to settle or contest,  as the case may be, any other
issue raised by the Internal Revenue Service or any other taxing authority.

         (d) If,  after the  receipt  by Kennedy  of an amount  advanced  by the
Company pursuant to Section 1(c), Kennedy becomes entitled to receive any refund
with respect to such claim,  Kennedy shall  (subject to the Company's  complying
with the  requirements of Section 1(c) promptly pay to the Company the amount of
such refund  (together  with any interest  paid or credited  thereon after taxes
applicable  thereto).  If, after the receipt by Kennedy of an amount advanced by
the Company pursuant to Section 1(c), a determination is made that Kennedy shall
not be entitled to any refund  with  respect to such claim and the Company  does
not notify Kennedy in writing of its intent to contest such denial of refund

                                        5

<PAGE>



prior to the expiration of 30 days after such  determination,  then such advance
shall be forgiven  and shall not be required to be repaid and the amount of such
advance  shall offset,  to the extent  thereof,  the amount of Gross-Up  Payment
required to be paid.

         2.  CONFIDENTIALITY.  (a) Except as otherwise  required by law, each of
the parties hereto shall keep the terms of this Agreement confidential.

         3. FULL  SETTLEMENT;  LEGAL FEES. The Company's  obligation to make the
payments provided for in this Agreement and otherwise to perform its obligations
hereunder  shall  not be  affected  by any  set-off,  counterclaim,  recoupment,
defense or other  claim,  right or action  which the  Company  may have  against
Kennedy  or  others.  In no event  shall  Kennedy  be  obligated  to seek  other
employment or take any other action by way of mitigation of the amounts playable
to Kennedy under any of the  provisions of this Agreement and such amounts shall
not be reduced  whether or not Kennedy  obtains  other  employment.  The Company
agrees to pay as incurred,  to the full extent  permitted by law, all legal fees
and  expenses  which  Kennedy  may  reasonably  incur as a result of any contest
(regardless  of the outcome  thereof) of the validity or  enforceability  of, or
liability or entitlement  under any provision of this Agreement or any guarantee
of performance  thereof,  unless such contest is against IHS, the Company or any
of their respective subsidiaries or affiliates,  in which case, each party shall
pay their respective  costs incurred in connection with such contest,  provided,
however, that to the extent any arbitrator or court shall determine that Kennedy
has prevailed as to the material issues raised in  determination of the dispute,
the  Company  shall as soon as  practicable,  but in no event later than 30 days
from the date of  determination of such arbitrator or court,  reimburse  Kennedy
for his costs incurred in connection with such contest.

                                        6

<PAGE>

         4.  CERTAIN  EFFECTS.   The  invalidity  or   unenforceability  of  any
paragraph,  term or  provision  of this  Agreement  shall in no way  affect  the
validity or enforceability of the remaining paragraphs,  terms and provisions of
this Agreement.  In the event of any such invalidity or unenforceability,  it is
the parties'  hereto  intention and agreement that any such  paragraph,  term or
provision  which  is held or  determined  to be  invalid  or  unenforceable,  as
written,  shall  nonetheless  be in force  and  binding  to the  fullest  extent
permitted by law as though such paragraph, term or provision had been written in
such  a  manner  and  to  such  an  extent  as  to  be  enforceable   under  the
circumstances.

         5.  EXPENSES.  The  Company  shall pay all legal  expenses  incurred by
Kennedy with  respect to this  Agreement  up to a maximum  amount of $2,500.

         6. NOTICES.  All notices,  consents and other communications under this
Agreement  shall be in writing  and shall be deemed to have been duly given when
(a)  delivered  by  hand,  (b)  sent  by  telecopier  or  mailed,  certified  or
registered, return receipt requested, or (c) when received by addressee, if sent
by Express Mail,  Federal  Express or other express  delivery  service  (receipt
requested),  in each case to the appropriate addresses or telecopier numbers set
forth below (or to such other  addresses and  telecopier  numbers as a party may
designate  as to  himself  or itself or by notice to the other  parties):

                            If to Kennedy:

                            William P. Kennedy
                            220 Prismen Terrace
                            Winter Park, Florida 32789



                                       7

<PAGE>



                            If to any other party hereto:

                            Integrated Health Services, Inc.
                            10065 Red Run Boulevard
                            Owings Mills, Maryland 21117

                            Attention: Taylor Pickett
                                       Executive Vice President

                                       Marshall Elkins
                                       General Counsel


                            with a copy to:

                                       Blass & Driggs
                                       461 5th Avenue
                                       New York, N.Y. 10017

                                       Attention: Michael F. Blass



         7. ENTIRE AGREEMENT. This Agreement is intended to express the complete
agreement and  understanding  among the parties  hereto on the matters set forth
herein and to supersede any and all other agreements and understandings, whether
oral or written,  between or among the  parties  hereto on the matters set forth
herein.

         8. BINDING EFFECT. The rights and obligations of the parties under this
Agreement  shall  inure to the  benefit  of and  shall  be  binding  upon  their
respective heirs, successors and legal representatives.

         9.  AMENDMENTS.  This Agreement  shall be amended or modified only by a
written  instrument  signed by the parties  hereto.  Nothing in this  Agreement,
expressed or implied,  is intended to confer upon any third person any rights or
remedies under or by reason of this Agreement.

                                        8

<PAGE>

         10. SUCCESSORS.

         (a) This Agreement is personal to Kennedy and without the prior written
consent of the Company shall not be assignable by Kennedy otherwise than by will
or the laws of descent  and  distribution.  This  Agreement  shall  inure to the
benefit of and be enforceable by Kennedy's legal representatives.

         (b) This  Agreement  shall inure to the benefit of and be binding  upon
the Company and IHS and its successors and assigns.

         (c) The Company and IHS will require any successor  (whether  direct or
indirect,   by  purchase,   merger,   consolidation  or  otherwise)  to  all  or
substantially all of the business and/or assets of the Company and IHS to assume
expressly and agree to perform this Agreement in the same manner and to the same
extent  that the  Company  and IHS would be  required  to  perform it if no such
succession had taken place.

         11.  GOVERNING LAW. This Agreement shall be construed under the laws of
the State of Florida  applicable  to agreements  made and to be performed  fully
therein, without regard to its conflicts of laws rules.

         12.  COUNTERPARTS.  This  Agreement  may be  executed  in  one or  more
counterparts, all of which shall be considered one and the same agreement.

         13.   TERMINATION  OF  THE  MERGER  AGREEMENT.   This  Agreement  shall
automatically terminate if and when the Merger Agreement is terminated.


                                        9

<PAGE>


         IN WITNESS WHEREOF,  the parties have executed this Agreement as of the
date first written above.


                                                --------------------------------
                                                William P. Kennedy

WITNESS:



- ------------------------
Name:

                                                RoTech Medical Corporation


                                                By:
                                                       -------------------------
                                                Title:


WITNESS:



- ------------------------
Name:

                                                Integrated Health Services, Inc.




                                                By:
                                                       -------------------------
                                                Title:


WITNESS:


- --------------------------


                                       10



         AGREEMENT (the "Agreement"), executed on July __, 1997, effective as of
the closing date of the merger  between RoTech  Medical  Corporation,  a Florida
corporation,  (the "Company") and Integrated  Health Service,  Inc. ("IHS") (the
"Effective Date") among Rebecca R. Irish ("Irish"), the Company and IHS.

         WHEREAS,  the  Company   simultaneously  with  the  execution  of  this
Agreement has entered into a merger  agreement with IHS whereby the Company will
become a wholly owned subsidiary of IHS (the "Merger Agreement");

         WHEREAS,  Irish is Chief Financial Officer of the Company,  an employee
and a stockholder of the Company;

         WHEREAS,  Irish,  the  Company  and IHS  mutually  desire to  terminate
Irish's  employment  with the  Company on the  Effective  Date and to enter into
certain other arrangements between Irish and the Company, and Irish, the Company
and IHS mutually desire to take certain other actions  contemplated herein, upon
the terms and conditions contained herein;

         NOW,  THEREFORE,  in  consideration  of the  mutual  agreements  of the
parties hereto contained herein and other good and valuable  consideration,  the
receipt and  sufficiency of which is hereby  acknowledged,  and in reliance upon
the  representations  of the other parties hereto contained herein,  each of the
parties hereto agrees as follows:



<PAGE>

     1. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

     (a) In the event it shall be  determined  that any payment,  investment  or
distribution  by the  Company  to or for the  benefit  of  Irish  or any  entity
controlled by Irish  (whether paid or payable or  distributed  or  distributable
pursuant to the terms of this  Agreement,  the Consulting  Agreement,  any other
agreement  executed in connection with the Merger Agreement,  or otherwise,  but
determined without regard to any additional payments required under this Section
1) (a  "Payment")  would be subject to the excise tax imposed by Section 4999 of
the Code or any  corresponding  provisions  of state or local tax  laws,  or any
interest or  penalties  are  incurred  by Irish with  respect to such excise tax
(such excise tax, together with any such interest and penalties, are hereinafter
collectively  referred to as the "Excise Tax"),  then Irish shall be entitled to
receive an  additional  payment (a  "Gross-Up  Payment")  in an amount such that
after payment by Irish of all taxes (including any interest or penalties imposed
with respect to such taxes),  including,  without  limitation,  any income taxes
(and any interest  and  penalties  imposed with respect  thereto) and Excise Tax
imposed  upon the Gross- Up  Payment,  Irish  retains an amount of the  Gross-Up
Payment equal to the Excise Tax imposed upon the Payments.

     (b) Subject to the provisions of Section 1(c), all determinations  required
to be made under this Section 1, including  whether and when a Gross-Up  Payment
is required and the amount of such Gross-Up  Payment and the  assumptions  to be
utilized in arriving at such  determination,  shall be made by Ernst & Young LLP
or such other  certified  public  accounting  firm as may be designated by Irish
(the "Accounting Firm"),  which shall provide detailed  supporting  calculations
both to the Company and Irish within 15 business days of the

                                        2

<PAGE>

receipt of notice from Irish that there has been a Payment, or such earlier time
as is requested by the Company. In the event that the Accounting Firm is serving
as  accountant  or auditor for the  individual,  entity or group  effecting  the
merger of the Company at IHS, Irish shall appoint another nationally  recognized
accounting firm to make the determinations  required hereunder (which accounting
firm shall then be referred to as the Accounting Firm hereunder). All reasonable
fees and expenses of the  Accounting  Firm shall be borne solely by the Company.
Any Gross-Up Payment, as determined pursuant to this Section 1, shall be paid by
the Company to Irish  within five days of the receipt of the  Accounting  Firm's
determination.  Any  determination  by the Accounting Firm shall be binding upon
the Company and Irish.  As a result of the  uncertainty  in the  application  of
Section  4999  of the  Code  at the  time of the  initial  determination  by the
Accounting Firm hereunder,  it is possible that Gross-Up Payments which will not
have been made by the Company should have been made ("Underpayment"), consistent
with the  calculations  required  to be made  hereunder.  In the event  that the
Company  exhausts its remedies  pursuant to Section 1(c) and Irish thereafter is
required  to make a  payment  of any  Excise  Tax,  the  Accounting  firm  shall
determine  the  amount  of the  Underpayment  that  has  occurred  and any  such
Underpayment  shall be  promptly  paid by the  Company to or for the  benefit of
Irish.

     (c) Irish shall  notify the Company in writing of any claim by the Internal
Revenue Service that, if successful, would require the payment by the Company of
the Gross-Up Payment.  Such  notification  shall be given as soon as practicable
but no later than ten  business  days after Irish is informed in writing of such
claim and shall  apprise the Company of the nature of such claim and the date on
which such claim is requested to be paid. Irish

                                        3

<PAGE>

shall not pay such claim prior to the expiration of the 30-day period  following
the date on which Irish gives such notice to the Company (or such shorter period
ending on the date that any payment of taxes with respect to such claim is due).
If the Company  notifies Irish in writing prior to the expiration of such period
that it desires to contest such claim, Irish shall:

              (i) give the Company any information  reasonably  requested by the
         Company relating to such claim,

              (ii) take such action in connection  with contesting such claim as
         the  Company  shall  reasonably  request in writing  from time to time,
         including,  without  limitation,  accepting legal  representation  with
         respect  to  such  claim  by an  attorney  reasonably  selected  by the
         Company.

              (iii)   cooperate   with  the  Company  in  good  faith  in  order
         effectively to contest such claim, and

              (iv) permit the Company to participate in any proceedings relating
         to such claim;

provided,  however,  that the Company  shall bear and pay directly all costs and
expenses  (including  additional  interest and penalties) incurred in connection
with such contest and shall indemnify and hold Irish  harmless,  on an after-tax
basis,  for any Excise Tax or income tax (including  interest and penalties with
respect thereto) imposed as a result of such representation and payment of costs
and expenses.  Without  limitation  on the foregoing  provisions of this Section
1(c), the Company shall control all  proceedings  taken in connection  with such
contest and, at its sole option,  may pursue or forgo any and all administrative
appeals,  proceedings,  hearings and  conferences  with the taxing  authority in
respect of such

                                        4

<PAGE>

claim and may, at its sole  option,  either  direct Irish to pay the tax claimed
and sue for a refund or contest the claim in any permissible  manner,  and Irish
agrees to prosecute such contest to a  determination  before any  administrative
tribunal,  in a court  of  initial  jurisdiction  and in one or  more  appellate
courts, as the Company shall determine;  provided,  however, that if the Company
directs Irish to pay such claim and sue for a refund,  the Company shall advance
the  amount  of such  payment  to  Irish,  on an  interest-free  basis and shall
indemnify and hold Irish harmless, in an after-tax basis, from any Excise Tax or
income tax (including  interest or penalties with respect  thereto) imposed with
respect to such  advance or with  respect to any imputed  income with respect to
such  advance;  and  further  provided  that any  extension  of the  statute  of
limitations  relating  to  payment of taxes for the  taxable  year of Irish with
respect to which such contested amount is claimed to be due is limited solely to
such contested amount.  Furthermore,  the Company's control of the contest shall
be limited to issues with respect to which a Gross-Up  Payment  would be payable
hereunder and Irish shall be entitled to settle or contest,  as the case may be,
any other  issue  raised by the  Internal  Revenue  Service or any other  taxing
authority.

     (d) If,  after the  receipt by Irish of an amount  advanced  by the Company
pursuant  to Section  1(c),  Irish  becomes  entitled to receive any refund with
respect to such claim, Irish shall (subject to the Company's  complying with the
requirements  of Section  1(c)  promptly  pay to the  Company the amount of such
refund  (together  with  any  interest  paid or  credited  thereon  after  taxes
applicable thereto). If, after the receipt by Irish of an amount advanced by the
Company  pursuant to Section 1(c), a determination  is made that Irish shall not
be entitled to any refund  with  respect to such claim and the Company  does not
notify Irish in writing of

                                        5

<PAGE>

its intent to contest such denial of refund prior to the  expiration  of 30 days
after such  determination,  then such advance shall be forgiven and shall not be
required to be repaid and the amount of such advance shall offset, to the extent
thereof, the amount of Gross-Up Payment required to be paid.

     2.  CONFIDENTIALITY.  (a) Except as otherwise  required by law, each of the
parties hereto shall keep the terms of this Agreement confidential.

     3. FULL  SETTLEMENT;  LEGAL  FEES.  The  Company's  obligation  to make the
payments provided for in this Agreement and otherwise to perform its obligations
hereunder  shall  not be  affected  by any  set-off,  counterclaim,  recoupment,
defense or other claim, right or action which the Company may have against Irish
or others. In no event shall Irish be obligated to seek other employment or take
any other action by way of mitigation of the amounts playable to Irish under any
of the  provisions  of this  Agreement  and such  amounts  shall not be  reduced
whether or not Irish  obtains  other  employment.  The Company  agrees to pay as
incurred, to the full extent permitted by law, all legal fees and expenses which
Irish may reasonably incur as a result of any contest (regardless of the outcome
thereof) of the validity or enforceability of, or liability or entitlement under
any provision of this Agreement or any guarantee of performance thereof,  unless
such contest is against IHS, the Company or any of their respective subsidiaries
or  affiliates,  in which  case,  each party  shall pay their  respective  costs
incurred in connection with such contest, provided,  however, that to the extent
any  arbitrator  or court shall  determine  that Irish has  prevailed  as to the
material  issues raised in  determination  of the dispute,  the Company shall as
soon as practicable, but in no

                                        6

<PAGE>

event later than 30 days from the date of  determination  of such  arbitrator or
court, reimburse Irish for his costs incurred in connection with such contest.

     4. CERTAIN EFFECTS.  The invalidity or  unenforceability  of any paragraph,
term or  provision  of this  Agreement  shall in no way affect the  validity  or
enforceability  of the  remaining  paragraphs,  terms  and  provisions  of  this
Agreement.  In the event of any such invalidity or  unenforceability,  it is the
parties'  hereto  intention  and  agreement  that  any such  paragraph,  term or
provision  which  is held or  determined  to be  invalid  or  unenforceable,  as
written,  shall  nonetheless  be in force  and  binding  to the  fullest  extent
permitted by law as though such paragraph, term or provision had been written in
such  a  manner  and  to  such  an  extent  as  to  be  enforceable   under  the
circumstances.

     5.  NOTICES.  All  notices,  consents and other  communications  under this
Agreement  shall be in writing  and shall be deemed to have been duly given when
(a)  delivered  by  hand,  (b)  sent  by  telecopier  or  mailed,  certified  or
registered, return receipt requested, or (c) when received by addressee, if sent
by Express Mail,  Federal  Express or other express  delivery  service  (receipt
requested),  in each case to the appropriate addresses or telecopier numbers set
forth below (or to such other  addresses and  telecopier  numbers as a party may
designate as to himself or itself or by notice to the other parties):

                  If to Irish:

                           Rebecca R. Irish
                           530 East Central Boulevard
                           #1203
                           Orlando, Florida 32801



                                        7

<PAGE>



                  If to any other party hereto:

                  Integrated Health Services, Inc.
                  10065 Red Run Boulevard
                  Owings Mills, Maryland 21117

                  Attention: Taylor Pickett
                             Executive Vice President

                             Marshall Elkins
                             General Counsel


                  with a copy to:

                              Blass & Driggs
                              461 5th Avenue
                              New York, N.Y. 10017

                              Attention: Michael F. Blass



     6. ENTIRE  AGREEMENT.  This  Agreement  is intended to express the complete
agreement and  understanding  among the parties  hereto on the matters set forth
herein and to supersede any and all other agreements and understandings, whether
oral or written,  between or among the  parties  hereto on the matters set forth
herein.

     7. BINDING  EFFECT.  The rights and  obligations  of the parties under this
Agreement  shall  inure to the  benefit  of and  shall  be  binding  upon  their
respective heirs, successors and legal representatives.

     8.  AMENDMENTS.  This  Agreement  shall be  amended or  modified  only by a
written  instrument  signed by the parties  hereto.  Nothing in this  Agreement,
expressed or implied,  is intended to confer upon any third person any rights or
remedies under or by reason of this Agreement.

                                        8

<PAGE>

     9. SUCCESSORS.

     (a) This  Agreement  is personal  to Irish and  without  the prior  written
consent of the Company shall not be assignable by Irish  otherwise  than by will
or the laws of descent  and  distribution.  This  Agreement  shall  inure to the
benefit of and be enforceable by Irish's legal representatives.

     (b) This  Agreement  shall inure to the benefit of and be binding  upon the
Company and IHS and its successors and assigns.

     (c) The  Company  and IHS will  require any  successor  (whether  direct or
indirect,   by  purchase,   merger,   consolidation  or  otherwise)  to  all  or
substantially all of the business and/or assets of the Company and IHS to assume
expressly and agree to perform this Agreement in the same manner and to the same
extent  that the  Company  and IHS would be  required  to  perform it if no such
succession had taken place.

     10.  GOVERNING LAW. This Agreement shall be construed under the laws of the
State  of  Florida  applicable  to  agreements  made and to be  performed  fully
therein, without regard to its conflicts of laws rules.

     11.   COUNTERPARTS.   This  Agreement  may  be  executed  in  one  or  more
counterparts, all of which shall be considered one and the same agreement.

     12. TERMINATION OF THE MERGER AGREEMENT. This Agreement shall automatically
terminate if and when the Merger Agreement is terminated.


                                        9

<PAGE>


     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date
first written above.



                                       -----------------------------------------
                                       Rebecca R. Irish

WITNESS:



- -----------------------------
Name:

                                       RoTech Medical Corporation


                                       By:
                                             -----------------------------------
                                       Title:


WITNESS:



- -----------------------------
Name:

                                       Integrated Health Services, Inc.




                                       By:
                                             -----------------------------------
                                       Title:


WITNESS:





                                       10



              CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS


The Board of Directors and Stockholders
Integrated Health Services, Inc.:


     We consent to the use of our  reports  dated March 24, 1997 and October 17,
1996,  incorporated by reference herein,  and to the reference to our firm under
the heading "Experts" in the registration statement.

     Our report dated March 24, 1997 refers to changes in accounting methods, in
1995, to adopt Statement of Financial  Accounting  Standards No. 121 relating to
impairment  of long-lived  assets and, in 1996,  from  deferring and  amortizing
pre-opening  costs of medical specialty units to recording them as expenses when
incurred.  Our report dated October 17, 1996 contains an  explanatory  paragraph
regarding the uncertainty with respect to certain contingent  payments which may
be  payable  under  a  settlement  agreement  with  the  Health  Care  Financing
Administration.



                                        /s/ KPMG Peat Marwick LLP


Baltimore, Maryland
September 17, 1997










INDEPENDENT AUDITORS' CONSENT


We consent to the incorporation by reference in this  Registration  Statement of
Integrated  Health  Services,  Inc. on Form S-4 of our report dated  October 28,
1996,  appearing in the Annual Report on Form 10-K of RoTech Medical Corporation
for the year ended July 31,  1996 and to the  reference  to us under the heading
"Experts" in the Prospectus, which is part of this Registration Statement.



/s/Deloitte & Touche LLP

Orlando, Florida
September 17, 1997



                       INTEGRATED HEALTH SERVICES, INC.
               THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS
                    FOR THE SPECIAL MEETING OF STOCKHOLDERS
                         TO BE HELD ON OCTOBER __, 1997

     Robert N. Elkins and Lawrence P. Cirka,  and each of them,  as the true and
lawful  attorneys,  agents and  proxies of the  undersigned,  with full power of
substitution,  are  hereby  authorized  to  represent  and to vote all shares of
Common  Stock  of  Integrated  Health  Services,  Inc.  held  of  record  by the
undersigned  on September 1, 1997, at the Annual Meeting of  Stockholders  to be
held at 10:00 A.M. on ________,  October __, 1997, at the  executive  offices of
IHS, 10065 Red Run Boulevard,  Owings Mills,  Maryland,  and at any  adjournment
thereof. Any and all proxies heretofore given are hereby revoked.


  WHEN  PROPERLY  EXECUTED,  THIS  PROXY  WILL  BE  VOTED  AS  DESIGNATED BY THE
  UNDERSIGNED.  IF  NO CHOICE IS SPECIFIED, THE PROXY WILL BE VOTED FOR PROPOSAL
  NO. 1.

  Proposal  No. 1 -  Proposal  to  approve  and adopt an  Agreement  and Plan of
  Merger,  dated as of July 6,  1997  (the  "Merger  Agreement"),  among  RoTech
  Medical Corporation, a Florida corporation ("RoTech"), IHS and IHS Acquisition
  XXIV,  Inc.,  a  Florida  corporation  and a  wholly-owned  subsidiary  of IHS
  ("Merger  Sub"),  pursuant to which,  among other things,  (a) Merger Sub will
  merge  with  and  into  RoTech  (the   "Merger")  and  RoTech  will  become  a
  wholly-owned subsidiary of IHS and (b) each outstanding share of common stock,
  $.0002  par value  per  share,  of  RoTech  ("RoTech  Common  Stock")  will be
  converted  into the right to  receive,  and each  right to  acquire a share of
  RoTech Common Stock will be converted into the right to purchase,  0.5806 of a
  share of common  stock,  $.001 par value per share,  of IHS, with cash paid in
  lieu of any fractional shares.
                             FOR  AGAINST  ABSTAIN
                             [ ]    [ ]      [ ]

Discretionary  authority is hereby granted with respect to such other matters as
may properly come before the meeting.

IMPORTANT:  PLEASE  SIGN  EXACTLY  AS NAME APPEARS BELOW. EACH JOINT OWNER SHALL
SIGN.  EXECUTORS, ADMINISTRATORS, TRUSTEES, ETC. SHOULD GIVE FULL TITLE AS SUCH.
IF  SIGNOR  IS A CORPORATION, PLEASE GIVE FULL CORPORATE NAME BY DULY AUTHORIZED
OFFICER.  IF  A  PARTNERSHIP,  PLEASE  SIGN  IN  PARTNERSHIP  NAME BY AUTHORIZED
PERSON.


                                       Dated ---------------------------- , 1997



                                       -----------------------------------------
                                       Signature



                                       ----------------------------------------
                                       Signature if held jointly


                                       The  submission of this proxy if properly
                                       executed  revokes all prior proxies given
                                       by the undersigned.

                                       The above-signed  acknowledges receipt of
                                       the   Notice  of   Special   Meeting   of
                                       Stockholders    and   the   Joint   Proxy
                                       Statement/Prospectus furnished therewith.

                                       PLEASE MARK,  SIGN,  DATE AND RETURN THIS
                                       PROXY CARD  PROMPTLY  USING THE  ENCLOSED
                                       ENVELOPE.



                          ROTECH MEDICAL CORPORATION 
             PROXY SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS 

     The undersigned  hereby appoints William P. Kennedy,  William A. Walker II,
Leonard E. Williams,  Stephen P. Griggs,  and Jack T. Weaver or any of them, the
proxies  and  attorneys-in-fact   for  the  undersigned,   with  full  power  of
substitution and revocation, to represent and vote on behalf of the undersigned,
at a  special  meeting  of  stockholders  of  RoTech  Medical  Corporation  (the
"Company"),  to be held at SunTrust  Bank,  200 South  Orange  Avenue,  Orlando,
Florida on October __, 1997 at 10:00 a.m.,  local time, and any  adjournments or
postponements  thereof,  all  shares of the common  stock,  $.0002 par value per
share,  of the  Company  standing  in the name of the  undersigned  or which the
undersigned may be entitled to vote as follows on the reverse side.

            THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR ITEM 1

            TO BE COMPLETED AND SIGNED ON THE REVERSE SIDE    [SEE REVERSE SIDE]


[X]  Please mark 
     votes as in 
     this example


This proxy when properly executed will be voted in the manner directed herein by
the  undersigned.  If no  direction  is made,  this  proxy will be voted FOR the
proposal set forth below.

1.   Proposal to adopt and approve an Agreement and Plan of Merger,  dated as of
     July 6, 1997 (the "Merger Agreement"), among the Company, Integrated Health
     Services,   Inc.  ("IHS")  and  IHS  Acquisition   XXIV,  Inc.,  a  Florida
     corporation and a wholly-owned  subsidiary of IHS ("Merger Sub"),  pursuant
     to which,  among other things,  (a) Merger Sub will merge with and into the
     Company  (the   "Merger")  and  the  Company  will  become  a  wholly-owned
     subsidiary of IHS and (b) each  outstanding  share of common stock,  $.0002
     par value  per  share,  of the  Company  ("RoTech  Common  Stock")  will be
     converted  into the right to receive,  and each right to acquire a share of
     RoTech Common Stock will be converted into the right to purchase, 0.5806 of
     a share of common stock,  $.001 par value per share, of IHS, with cash paid
     in lieu of any fractional shares.

                    The  submission of this proxy if properly  executed  revokes
                    all prior proxies given by the  undersigned.  Receipt of the
                    Notice of Special Meeting of Stockholders  and  accompanying
                    Joint  Proxy  Statement/Prospectus  is hereby  acknowledged.
                    Note:  Please sign, date and mail this proxy promptly in the
                    enclosed postage-paid envelope.  Please sign exactly as name
                    appears on this card. When shares are held by joint tenants,
                    both  should  sign.  When  signing  as  attorney,  executor,
                    administrator  or guardian,  please give full title as such.
                    If a  corporation,  please  sign in full  corporate  name by
                    president or other  authorized  officer.  If a  partnership,
                    please sign in partnership name by authorized person.

     FOR       AGAINST        ABSTAIN
    [   ]       [   ]          [   ]

Signature:                Date:       Signature:                 Date:          
          --------------     --------           ----------------      ----------


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