NPPB and hydrops fetalis: Biochemical analysis showed that the Stage B HF group had higher levels of NT-proBNP (Figure 1A, 117.35 ± 114.93 vs. 78.30 ± 87.55, p = 0.040) and adiponectin (13.13 ± 10.32 vs. 8.74 ± 8.86, p = 0.011).