NPPB and hydrops fetalis: Similar to the differential features of MACE, all six clinical biomarkers were higher in HF than in event-free patients as expected: NT-proBNP demonstrated the highest AUC of 0.79 (95% CI: 0.74–0.84), followed by BNP with AUC of 0.78 (95% CI: 0.73–0.83).