NPPB and hydrops fetalis: Compared to baseline, the EF increased from 32% to 37%, the number of patients with EF >40% increased from 1 to 7 (p = 0.04), and B-type natriuretic peptide (BNP) decreased from 222 to 166 pg/ml (p = 0.04); notably, these improvements may be partially attributed to medication initiation during a HF exacerbation.