NPPB and heart failure: Comparing the two groups, we found significant differences in age (60 ± 10 years in Group A vs. 55 ± 11 years in Group B; p = 0.005), heart failure etiology (ischemic: 48% vs. 28%; p = 0.002), baseline LVEF (33% ± 7% vs. 27% ± 8%; p < 0.001) and baseline NT-proBNP 1612 (709, 3573) pg/mL vs. 1112 (513, 3027) pg/mL; p = 0.03).