Plasma NT-proBNP quartiles postnatal day three in relation to PDA status and morbidity in neonates born before 32 gestational weeks, Aarhus University Hospital, Denmark.

NT-proBNP N-Terminal pro-Brain Natriuretic peptide maximum detection limit of 70,000 ng/l. PDA patent ductus arteriosus day three. GA gestational age. Clinically significant PDA if diameter ≥1.5 mm. Sepsis defined as seven days of antibiotics initiated before day three. Inotropes used within the first three days of life. Mechanical ventilation postnatal day three. BPD bronchopulmonary dysplasia.Plasma NT-proBNP quartiles postnatal day three in relation to PDA status and morbidity in neonates born before 32 gestational weeks, Aarhus University Hospital, Denmark.