NPPB and Patent ductus arteriosus: The predictive utility of TnECHO was further supported by Elsayed 2016 [33], who found that combining TnECHO with biomarkers such as brain-type natriuretic peptide (BNP) and scoring systems like the PDA score at 48–72 h of life could help anticipate the development of significant neonatal morbidities.