NPPB and hydrops fetalis: There were considerable differences in NTproBNP between groups (p < 0.001), as well as in the echocardiographic variables of left ventricular mass index, left atrial volume, and right ventricular (all p < 0.001), but not in left ventricular function (p = 0.084), or valvular disease (HF n = 2, CA: n = 5, p = 0.224).