The Effects of Normal as Compared with Low Hematocrit Values in Patients with Cardiac Disease Who Are Receiving Hemodialysis and Epoetin
Anatole Besarab, M.D., W. Kline Bolton, M.D., Jeffrey K. Browne, Ph.D., Joan C. Egrie, Ph.D., Allen R. Nissenson, M.D., Douglas M. Okamoto, Ph.D., Steve J. Schwab, M.D., and David A. Goodkin, M.D.
Background In patients with end-stage renal disease, anemiadevelops as a result of erythropoietin deficiency, and recombinanthuman erythropoietin (epoetin) is prescribed to correct theanemia partially. We examined the risks and benefits of normalizingthe hematocrit in patients with cardiac disease who were undergoinghemodialysis.
Methods We studied 1233 patients with clinical evidence of congestiveheart failure or ischemic heart disease who were undergoinghemodialysis: 618 patients were assigned to receive increasingdoses of epoetin to achieve and maintain a hematocrit of 42percent, and 615 were assigned to receive doses of epoetin sufficientto maintain a hematocrit of 30 percent throughout the study.The median duration of treatment was 14 months. The primaryend point was the length of time to death or a first nonfatalmyocardial infarction.
Results After 29 months, there were 183 deaths and 19 firstnonfatal myocardial infarctions among the patients in the normal-hematocritgroup and 150 deaths and 14 nonfatal myocardial infarctionsamong those in the low-hematocrit group (risk ratio for thenormal-hematocrit group as compared with the low-hematocritgroup, 1.3; 95 percent confidence interval, 0.9 to 1.9). Althoughthe difference in event-free survival between the two groupsdid not reach the prespecified statistical stopping boundary,the study was halted. The causes of death in the two groupswere similar. The mortality rates decreased with increasinghematocrit values in both groups. The patients in the normal-hematocritgroup had a decline in the adequacy of dialysis and receivedintravenous iron dextran more often than those in the low-hematocritgroup.
Conclusions In patients with clinically evident congestive heartfailure or ischemic heart disease who are receiving hemodialysis,administration of epoetin to raise their hematocrit to 42 percentis not recommended.
Source Information
From the Division of Nephrology and Hypertension, Henry Ford Hospital, Detroit (A.B.); the Department of Internal Medicine, Division of Nephrology, University of Virginia Health Sciences Center, Charlottesville (W.K.B.); Amgen, Thousand Oaks, Calif. (J.K.B., J.C.E., D.M.O., D.A.G.); the Department of Medicine, Division of Nephrology, University of California at Los Angeles, Los Angeles (A.R.N.); and the Department of Medicine, Nephrology Division, Duke University Medical Center, Durham, N.C. (S.J.S.).
Address reprint requests to Dr. Goodkin at Clinical Research, Amgen, 1 Amgen Center Dr., Thousand Oaks, CA 91320.
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