Not only is the incidence of anemia high in patients with chronic kidney disease (CKD), but the incidence of anemia gradually increases with the decline of renal function. When CKD patients enter stage 5, anemia is very common[1]。 A domestic survey on the anemia status of outpatient and inpatient CKD patients in nephrology showed that the prevalence of anemia in CKD patients at stage 1 to 5 was 22.0%, 37.0%, 45.4%, 85.1% and 98.2%. The prevalence of anemia in dialysis and non-dialysis CKD patients was 98.2% and 52.0%, respectively[2]。 Anemia has important effects on long-term survival and quality of life of patients. The results of a controlled study of the relationship between renal anemia and quality of life in hemodialysis (HD) patients showed[3]HD patients showed low levels in physiological functions, physical pain, general health, mental health and other indicators related to quality of life, and decreased with the aggravation of anemia, resulting in a significant decrease in survival rate. For hemodialysis patients, timely correction of hemoglobin level can significantly improve the quality of life and physiological function of patients, and shorten the hospital stay and reduce complications[4]。 Therefore, it is of great clinical significance to correct anemia in patients with CKD. Many countries or regions and international organizations, including China, have issued expert consensus or clinical guidelines for the treatment of renal anemia, and put forward many useful suggestions for the evaluation and management of renal anemia.
