NPPB and hydrops fetalis: In a univariate Cox regression analysis, biomarkers of HF (TnT: 1.007; 95%-CI: 1.003–1.010; p < 0.001; NT-proBNP: 1.009; 95%-CI: 1.006–1.012; p < 0.001) as well as eGFR (HR: 0.963; 95%-CI: 0.949–0.977; p < 0.001) provided predictive utility.