NPPB and hydrops fetalis: Another aspect is the determination of non-HF mortality in HFimpHF after discharge from the hospital because non-cardiac causes accounted for more than 60% of deaths, which are not completely predicted by biomarkers of mechanical stress (NT-proBNP), myocardial damage (high-sensitivity troponin T/I), inflammation (galectin-3, interleukin-6, high-sensitivity C-reactive protein, growth differential factor-15), and fibrosis (soluble suppression of tumorigenicity 2 [sST2]) [14,15,16,17,18].