NPPB and hydrops fetalis: Multivariable Cox regression analysis, including age, BNP levels, TRPG, and ACE‐I/ARB that were shown to be different between the FIB‐5 index ≥ −4.00 and FIB‐5 index < −4.00 groups demonstrated that the FIB‐5 index < −4.00 was an independent predictor for HF hospitalization (hazard ratio 1.893, 95% CI: 1.043–3.438, p = 0.036) but not for cardiac death (p = 0.228) or composite endpoint (p = 0.464).