NPPB and periventricular leukomalacia: At 30 days the following parameters showed no significant difference comparing BAV to TAV results: mean peak velocity (2.2 ± 0.4 m/s vs. 2.1 ± 0.4 m/s, P = 0.630), pressure gradient (10.8 ± 4.5 mmHg vs. 10.4 ± 4.4 mmHg, P = 0.648), EOA (1.7 ± 0.4 cm2 vs. 1.9 ± 0.5 cm2, P = 0.061), LVEF (64.6 ± 8.6% vs. 63.2 ± 9.0%, P = 0.382) and NT-proBNP (557.0 ± 589.4 ng/L vs. 771.6 ± 1,055.9 ng/L, P = 0.123), the proportion of  ≥mild central regurgitation (11.8% vs. 13.1%, P = 0.763),  ≥mild PVL (9.2% vs. 9.2%, P = 0.984) and NYHA Class ≤II (100.0% vs. 100.0%, P = 1.000) had no in BAV patients.