Age, BUN, NT-proBNP, hemoglobin, β-blocker; age, previous hospitalization owing to HF, oedema, SBP, eGFR; age, previous hospitalization owing to HF, edema, NT-proBNP, SBP, hemoglobin, high-density lipoprotein, sodium, β-blocker. This evidence concerns the gene NPPB and hydrops fetalis.