NPPB and congestive heart failure: After 4 weeks of treatment, the study group serum cTnI (0.36 ± 0.12 μg/L) and NT-proBNP (276.91 ± 30.12 pg/ml) of patients with chronic heart failure are lower than those in the control group (0.87 ± 0.25 μg/L) and (367.48 ± 48.57 pg/ml) (P<0.05).