The data demonstrated a significant difference in LVEF (27.27 ± 8.25% vs. 44.50 ± 15.02, 26.95 ± 9.33% vs 36.55 ± 13.15%; p < 0.01), rHR (82.265 ± 18.250 vs 71.552 ± 13.991, 82.138 ± 16.239 vs 70.655 ± 11.899, p < 0.05) and BNP (2,123.000 ng/ml ±2,500.334 vs 379.075 ng/ml ±711.863, 2,269.167 ng/ml ± 2,392.024 vs 684.542 ng/ml ±1029.799, p < 0.01) in SR and AF before or after levosimendan infusion. Here, NPPB is linked to atrial fibrillation.