NPPB and congestive heart failure: Natriuretic peptides are a group of similar peptides of atrial,ventricular, and endothelial origin, but the most studied, as CHF markers, areB-type natriuretic peptide (BNP) and its prohormone, namely, N-terminalpro-B-type natriuretic peptide (NT-proBNP) (Fig. 5).