Cardiac troponins T/I (cTnT/I) (Heil & Tang, 2015) and creatine kinase myocardial band isoenzyme (CK-MB) have been widely used as biomarkers for myocardial infarction (MI), while brain natriuretic peptide (BNP) has been used for heart failure (HF) for a long time (Calzetta et al., 2016). Here, NPPB is linked to hydrops fetalis.