NPPB and hydrops fetalis: Although all scores are designed with only the variables listed above, the addition of BNP or NT-proBNP as linear variables would significantly increase the predictive power of all scores.52,54 Based on the thresholds used in the studies PONTIAC43 and STOP-HF,42 we suggest reclassifying individuals with BNP ≥ 50 pg/mL or NT-proBNP ≥ 125 pg/mL into a higher risk category.