This trial is planned to be conducted simultaneously in multiple domestic clinical research site, and a total of 140 subjects will be enrolled, including 70 subjects in the investigational drug group and 70 subjects in the placebo group.~Primary endpoint: LVESVI change from baseline on day 30 Secondary endpoints: LVEF Change from baseline on day 30 and day 90. LVESV, LVEDV, LVEDVI change from baseline on day 30. LVESV, LVESVI, LVEDV, LVEDVI change from baseline on day 90. NT-proBNP change from baseline on day 30 and day 90. NYHA class change from baseline on day 30 and day 90.
A multi-center, randomized, double-blind, placebo-controlled phase III clinical trial to evaluate the effect of injectable Neucardin on the heart function in male patients with NT-proBNP ≤ 1700 pg/ml and female patients with NT-proBNP ≤ 4000 pg/ml, NYHA II-III chronic systolic heart failure, and to confirm its efficacy and safety.