Anemia after renal transplantation: an underestimated problem.
In end-stage renal disease patients anemia is known to be an independent risk factor for cardiovascular disease and death. In a monocenter retrospective analysis, we investigated 207 stable patients (68 women/139 men) who underwent a first renal transplantation. Immunosuppressive therapy was performed with either cyclosporine plus mycophenolate mofetil, tacrolimus plus mycophenolate mofetil, or rapamycin plus mycophenolate mofetil; 43.5% of the patients were treated with steroids. Seventy-eight patients (37.7%) displayed anemia, including 8.7% with a severe disorder displaying an average hemoglobin (Hb) level of <6.8 mmo/L in men and <6.2 mmol/L in women. In 8.2% of the cases, we observed moderate anemia (Hb 6.8-7.4 mmol/L in men and 6.2-6.8 mmol/L in women), and in 20.8% (29 men and 14 women), mild anemia (Hb <8.06 mmol/L in men and <7.45 mmol/L in women). Erythropoietin was administered in 55.5% of patients with severe anemia, 53% with moderate anemia, and 11.6% with mild anemia. Serum creatinine level was a significant predictor of anemia (B -0.004; SE 0.001; P < .01). Among patients with creatinine >200 micromol/L, 63% were anemic compared with 22% of those with a serum creatinine level <200 micromol/L (P < .05). No correlation was observed with immunosuppressive medication or treatment with angiotensin-converting enzyme inhibitors/angiotensin-II receptor antagonists. During a 3-year follow-up, both mortality and graft failure rates were significantly greater among anemic patients nonanemic patients (mortality 3.3% vs 0.5%, P < .001; graft failure 4.3% vs 0%, P < .001). We found an unexpectedly high incidence of anemia in patients with well-functioning grafts. Anemia as a risk factor for mortality and graft failure should be treated more intensively among renal transplant patients.
Ott
U
U
Department of Internal Medicine III, Friedrich-Schiller-University, Jena, Germany.
Busch
M
M
Steiner
T
T
Wolf
G
G
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000740:Anemia / Q000145:classification / Q000453:epidemiology*; D003404:Creatinine / Q000097:blood; D004359:Drug Therapy, Combination; D005260:Female; D005500:Follow-Up Studies; D006400:Hematocrit; D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D015994:Incidence; D007676:Kidney Failure, Chronic / Q000150:complications; D016030:Kidney Transplantation / Q000009:adverse effects* / Q000276:immunology; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012727:Sex Characteristics
D007166:Immunosuppressive Agents; D003404:Creatinine