NPPB and atrial fibrillation: In the propensity score-matched cohort, patients with prolonged LOH had worse cardiac function compared to those with standard LOH (NYHA IV: 6.6% vs. 17.1%; LVEDD: 68.01 ± 9.15 mm vs. 69.98 ± 10.30 mm; NT-proBNP: 1710.70 ± 1733.10 pg/mL vs. 2027.64 ± 2917.72 pg/mL) and higher incidence of VT/VF and AF (VT/VF: 19.2% vs. 30.2%; AF: 14% vs. 23.3%), with a standardized difference significantly higher than 10.0%.