Abstract

Background: This study aimed to evaluate outcomes, prognosis, and safety associated with the timing of surgical ligation for patent ductus arteriosus (PDA) in extremely premature infants (EPI). Methods: We reviewed the clinical data of 44 EPI (gestational age at birth 26.8 ± 0.67 weeks; birth weight 997 ± 152 g) who received surgical ligation for hemodynamically significant PDA (hsPDA) in the Neonatal Intensive Care Unit (NICU) of the Seventh Medical Center of PLA General Hospital in China between January 2021 and December 2014. We compared the general characteristics, underlying diseases, postoperative surgical complications, and prognoses in two groups of patients who received early ligation (≤ 14 days after birth) and late ligation (> 14 days after birth). Results: The gender, gestational age at birth, birth weight, Apgar score, postoperative surgical complications, rates of bronchopulmonary dysplasia (BPD), retinopathy of prematurity, necrotic enterocolitis, periventricular leukomalacia, total hospitalization, and medical costs of both groups were compared. According to the results, the late ligation group had a higher rate of severe BPD (66.3% cf. 35%) and required significantly longer time to reach total enteral feeding and weaning of respiratory support compared with the early ligation group. Conclusions: In EPI with hsPDA, for whom medical treatment failed or is contraindicated, early surgical closure of the ductus arteriosus can promote earlier total enteral feeding, shorten the duration of mechanical ventilation, and reduce the rates of severe BPD.

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