Low dose iron supplementation and efficacy of erythropoiesis in renal anemia treatment for hemodialysis patients: a randomized controlled study

INTERVENTION: Low dose iron supplementation (Fesin 6A/ 3months) Routine iron supplementation (Fesin 12A/ 3months) CONDITION: Renal anemia PRIMARY OUTCOME: (1) Hemoglobin and erythropoiesis‐related indexes ; (2)Blood chemical examination including iron‐related, inflammation, nutrition indexes ; (3)Required dose of epoetin beta pegol; (4)Hemodynamic parameters ; ; (After 3 months of iron supplementation) INCLUSION CRITERIA: (1) Patients with maintenance hemodialysis (2) Patients with renal anemia, who are treated with rHuEPO and iron