NPPB and hydrops fetalis: Atrial natriuretic peptides (ANPs) and brain natriuretic peptides (BNPs), also known as B-type peptides, stand out as the most pertinent natriuretic peptide (NP) biomarkers for both the diagnosis and prognosis of heart failure (HF), as well as the assessment of underlying CVD often linked to heightened ventricular stress and congestive disorders [19].