Iron deficiency involvement in the results of long-term replacement therapy of renal anemia with recormon, a preparation of recombinant human erythropoietin, has been studied in chronic renal failure patients on programmed hemodialysis. The effect of recormon subcutaneous administration to 51 patients was found reduced in 9 patients; in 5 of them the decreased sensitivity to recormon was attributed to iron deficiency. During a year of treatment the percentage of iron-deficient patients rose from 9.1% to 45% as a result of intensive uptake of iron in the course of erythropoiesis. Iron preparation as a corrective treatment contributed to hematocrit increment reducing effective doses of erythropoietin. In addition to routine control of ferritin and iron it is recommended to trace the degree of transferrin saturation in the course of recombinant erythropoietin therapy.
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