Primary outcome: 90-day all-cause mortality or HF readmission Secondary outcomes: 180-day all-cause mortality or HF readmission rate, length of hospital stay, 90-day cardiac-specific death, MACE, dyspnoea via VAS score, dyspnoea via Likert 7-point scale, NYHA functional class, WHF, MLHFQ scale, intravenous diuretics, NT-proBNP. This evidence concerns the gene NPPB and hydrops fetalis.