NPPB and hydrops fetalis: Compared to that trial, our cohort had less advanced HF, as indicated by the relatively higher baseline peakVO2 (16.2 mL/kg/min vs. 13.4 mL/kg/min), LVEF (34.6% vs. 33.7%), and lower NT-proBNP levels (774 vs. 1,085 pg/ml).