NPPB and hydrops fetalis: For the prediction of death, the strongest and most consistently reported predictors were the total pulmonary vascular resistance (TPR), cardiac index (CI), renal function, brain natriuretic peptide (BNP) or N-terminal pro–B-type natriuretic peptide (NT-proBNP) levels, history of HF, patient age, and blood pressure [48,49].