1 EXHIBIT 21.1 RENEX CORP. SUBSIDIARIES STATE OF YEAR OF NAME INCORPORATION INCORPORATION - ----------------------------------------------------------- ------------------------ ------------------------ Renex Dialysis Clinic of University City, Inc. Missouri 1993 Renex Dialysis Clinic of Pittsburgh, Inc. Pennsylvania 1993 Renex Corp. Texas 1993 Renex Dialysis Clinic of Tampa, Inc. Florida 1994 Renex Dialysis Clinic of Creve Couer, Inc. Missouri 1994 Renex Dialysis Homecare of Greater St. Louis, Inc. Missouri 1994 Renex Dialysis Clinic of Amesbury, Inc. Massachusetts 1994 Renex Dialysis Clinic of Bridgeton, Inc. Missouri 1995 Renex Dialysis Clinic of Philadelphia, Inc. Pennsylvania 1995 Renex Dialysis Homecare of Tampa, Inc. Florida 1995 Renex Dialysis Clinic of Woodbury, Inc. New Jersey 1995 Renex Dialysis Facilities, Inc. Mississippi 1990 Renex Dialysis Clinic of Orange, Inc. New Jersey 1996 Renex Dialysis Clinic of Bloomfield, Inc. New Jersey 1996 Renex Dialysis Clinic of North Andover, Inc. Massachusetts 1996 Renex National Homecare, Inc. Florida 1997 Renex Dialysis Clinic of Union, Inc. Missouri 1997 Dialysis Services of Atlanta, Inc. Georgia 1997 Renex Management Services, Inc. Florida 1997 Renex Dialysis Clinic of Maplewood, Inc. Missouri 1997 Renex Dialysis Clinic of South Georgia, Inc. Georgia 1998