NPPB and hydrops fetalis: As expected, plasma concentrations of NT-proBNP were higher in patients with HF, compared to patients without HF in both non-obese and obese patients (median: 202 vs. 1050 ng/L and 120 vs. 196 ng/L; mean ± SD: 479 ± 698 vs. 2334 ng/L ± 4060 and 259 ± 305 vs. 805 ng/L ± 1981, respectively, all P < 0.001 and P = 0.047).