Similarly, Nguyen et al. in their prospective study correlated NT-pro-BNP values with the rate of 90-day post-discharge events in patients with HF displaying a reduced ejection fraction, demonstrating that NT-proBNP had the highest predictive value, both in terms of univariate Cox proportional hazard analysis [HR (95%CI) = 2.49 (1.41–4.40), p value 0.002] and multivariate analysis [HR (95%CI) = 2.36 (1.31–4.24) p value 0.004] [38]. Here, NPPB is linked to hydrops fetalis.