On the one hand, the final MACE predictive models including age, HF, FT3, FIB, and proBNP showed a C index of 0.621 (95% CI = 0.596–0.646), which was significantly higher than the traditional model consisting of common clinical variables (C index of 0.586, 95% CI = 0.554–0.618) (Table 4). Here, NPPB is linked to hydrops fetalis.