Early or late surgical ligation of medical refractory patent ductus arteriosus in premature infants.

Optimal time to surgical ligation of patent ductus arteriosus (PDA) in very-low-birth-weight (< 1500 g) premature infants remains an area of controversy. We compared the outcomes of early or late ligation of medical refractory PDA in very-low-birth-weight premature infants. Fifty-six infants underwent surgical closure of PDA after failure of or having contraindications to medical treatment. Thirteen infants were in the early ligation (< or = 14 days) and 43 in the late ligation (> 14 days) groups. Basic clinical features, major morbidity of prematurity and mortality were compared. Clinical features and major outcomes were similar. The early ligation group had earlier onset of symptomatic PDA (5.7 +/- 1.6 days vs. 8.1 +/- 3.6 days, p = 0.024), and fewer days of total parenteral nutrition (TPN) (39.6 +/- 13.9 days vs. 60.4 +/- 31.4 days, p = 0.025) and ventilator use (11.1 +/- 6.7 days vs. 18.6 +/- 10.5 days, p = 0.019). Early ligation of medical refractory PDA in very-low-birth-weight premature infants improves enteral feeding tolerance and reduces TPN and ventilator use, but long-term benefits need further investigation.