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      Increasing the hematocrit has a beneficial effect on quality of life and is safe in selected hemodialysis patients. Spanish Cooperative Renal Patients Quality of Life Study Group of the Spanish Society of Nephrology.

      Journal of the American Society of Nephrology : JASN
      Adult, Erythropoietin, adverse effects, therapeutic use, Ferritins, blood, Health Status Indicators, Hematocrit, Hemoglobins, analysis, Hospitalization, Humans, Middle Aged, Nutritional Physiological Phenomena, Prospective Studies, Quality of Life, Renal Dialysis

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          Abstract

          Target hematocrit/hemoglobin values in dialysis patients are still controversial. The Spanish Cooperative Renal Patients Quality of Life Study Group (including 34 hemodialysis units) conducted a prospective, 6-mo study of the effect on patient functional status and quality of life of using epoetin to achieve normal hematocrit in hemodialysis patients with anemia. The possible adverse effects of increased hematocrit, patient hospitalization, and epoetin requirements were also studied. The study included 156 patients (age range, 18 to 65 yr). Given the minimal experience in the safety of increasing hematocrit in dialysis patients to normal levels with epoetin, stable patients on hemodialysis who had received epoetin treatment for at least 3 mo and had a stable hemoglobin level of > or = 9 g/dl were included in the study. Patients with antecedents of congestive cardiac failure, ischemic cardiopathy, diabetes mellitus, uncontrolled hypertension, cerebrovascular accident or seizures, malfunction of the vascular access or severe comorbidity (defined by a comorbidity index), and those over 65 yr of age were excluded from the study. Quality of life was measured with the Sickness Impact Profile (SIP) and Karnofsky scale. Patients completed questionnaires at home at onset and conclusion of the 6-mo study. Mean hematocrit increased from 30.9 to 38.4% and hemoglobin from 10.2 to 12.5 g/dl during the study. Health indicator scores improved significantly: mean Physical Dimension (SIP) from 5.38 to 4.1 (P < 0.005); mean Psychosocial Dimension from 9.2 to 7 (P < 0.001); mean global SIP from 8.9 to 7.25 (P < 0.001); mean Karnofsky scale score from 75.6 to 78.4 (P < 0.01). (SIP is scaled so that lower scores represent better functional status, and vice versa for the Karnofsky scale). Therefore, functional status and quality of life improved with increased hematocrit. No deaths occurred. Three patients (2%) were censored for hypertension and nine (5.7%) for thrombosis of the vascular access. The cumulative probability of thrombosis of the vascular access was 0.067. The average epoetin dose rose from 93 +/- 62 U/kg per wk at onset to 141 +/- 80 U/kg per wk at conclusion, a 51% increase. The number of patients hospitalized decreased and hospital lengths of stay were shorter during the study period than in the same patients in the 6-mo period preceding the study (P < 0.05). Nine patients (5.7%) had thrombosis of the vascular access. There were no changes in the prevalence of arterial hypertension, but three patients (2%) showed hypertension that was difficult to control. It is concluded that normalization of hematocrit in selected hemodialysis patients, i.e., nondiabetic patients without severe cardiovascular or cerebrovascular comorbidities, improves quality of life and decreases morbidity without significant adverse effects.

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