NPPB and hydrops fetalis: Multivariate analysis was conducted to evaluate the effect of the following baseline variables on rehospitalisation for HF: anti-M2-R (positive vs. negative), dosages of metoprolol, LVEDD, LVEF (≤ 35% vs. > 35%), NT-proBNP (> 4500 pg/mL vs. ≤ 4500 pg/mL).