Yasuyuki et al. (33) found that GWTG-HF risk score can show good discrimination and calibration in Japanese AHF patients (c-statistic, 0.763; 95% CI, 0.700–0.826), and the discriminative ability of the model was significantly improved with the addition of BNP levels (c statistic, 0.818; 95% CI, 0.771–0.865).Although the GWTG-HF score was originally developed for in-hospital patients, it also demonstrates good discrimination for 1-year mortality in a heterogeneous cohort of CICU patients (34). Here, NPPB is linked to hydrops fetalis.