Kidney transplantation represents a renal replacement therapy for end-stage renal failure, with outcomes improving from year to year. With the improved survival prognosis, treatment of complications of chronic kidney disease after transplantation is becoming increasingly important. In particular, posttransplantation anemia (PTA) is often protracted, which could be related to a variety of factors, including the renal function status, graft rejection episodes, and infectious causes. PTA occurs in about 30-40% of transplant recipients, and is known to affect the function of the transplanted kidney as well as patient survival. Early PTA is associated with a risk of death and cardiovascular disorders, however, during this phase, priority is given to the appropriate maintenance of immunosuppression rather than to the treatment of anemia. Maintenance-phase PTA exerts a strong influence on the survival, prognosis of the transplanted kidney, quality of life, etc. Unlike the disease state and treatment of usual renal anemia, it has been suggested that PTA may possibly reflect the functional state of the transplanted kidney. Therefore, it has been suggested that proper renal function may be maintained by ensuring a normal hemoglobin level in kidney transplant recipients. Proper management of PTA could be expected to be associated with an improved prognosis of the transplanted kidney and improved patient survival in kidney transplant recipients. It is advisable to provide appropriate treatment by setting target levels in accordance with the dialysis vintage, primary disease, cardiovascular complications, and kidney transplant function and delineation of the transplant recipient characteristics.
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