Roxadustat(FibroGen, China), 100mg (45-60kg) or 120mg (≥ 60kg) each time, three times a week, orally on an empty stomach in the morning. The initial dose of Sacubitril Valsartan Sodium Tablets(Novartis, China) is 50mg, once a day, taken on an empty stomach in the morning, and gradually titrated from the minimum dose to the maximum tolerated dose.

Recombinant human erythropoietin (SEBOR, 10000 units / Branch) was injected subcutaneously once a week; Perindopril tablets (Servier, China), taken on an empty stomach, gradually titrated from the minimum dose to the maximum tolerated dose.

Select the appropriate dose according to the patient's situation

By detecting blood routine,calculate the changes of hemoglobin.Change value of hemoglobin level(g/L) = baseline hemoglobin level(g/L) - hemoglobin level after treatment(g/L)

Cardiac ejection fraction was measured by cardiac ultrasound before and after treatment，and change of cardiac ejection fraction(%) = baseline cardiac ejection fraction level(%) - post-treatment cardiac ejection fraction level(%)

Incidence rate = number of patients with the events/ total number of patients included in the study in this group.