NPPB and hydrops fetalis: The characterization of cardiac morphology and the HF phenotyping through echocardiography were beyond the scope of our study, which focused instead on the use of age- and comorbidities-adjusted NT-proBNP cut-offs to assess the prevalence of cardiac overload and stratify the HF risk, thus identifying those patients to timely address to cardiac ultrasound imaging and cardiologic evaluation, as endorsed by the ESC Consensus Statement [15], which served as the foundation guide for our analysis.