NPPB and hydrops fetalis: In the case of NT-proBNP, the lowest values (up to 63 ng/L = 1st tertile) had subjects with normal LVDF and LVDD grade 1, while the highest values (≥344 ng/L = 3rd tertile) were more often found in subjects with LVDD grades 2 and 3, very high SCORE2 (p < 0.001), HF (predominantly HFrEF (p < 0.001)), and NYHA class III-IV (p = 0.001).