NPPB and hydrops fetalis: LogFGF23 levels on day 1 also showed a robust correlation with echocardiographic functional parameters of HF, including LVEDD, LVESD, and LA area, both in an unadjusted analysis and when adjusted for age, NT-proBNP, eGFR, and LVEF, while we did not observe correlations between logFGF23 levels and septum thickness, deceleration time (DT), E/A, E/E’, RVSP, and TAPSE (Table 1).