Journal Article

PDA management strategies and pulmonary hypertension in extreme preterm infants with bronchopulmonary dysplasia

Altit, Gabriel, Wutthigate, Punnanee, Carvalho Nunes, Gabriela De, Drolet, Christine, Simoneau, Jessica, Hébert, Audrey, McNamara, Patrick J., Maltais-Bilodeau, Camille, Leclerc, Marie-Ève

2025

Overview

Background Premature infants are at risk for developing pulmonary hypertension (PH) in the context of bronchopulmonary dysplasia (BPD). Studies suggest a potential link between prolonged patent ductus arteriosus (PDA) exposure and BPD-PH, though management strategies remain controversial. Methods Retrospective echocardiographic evaluation of newborns <29 weeks gestational age with BPD at two distinct centers. Primary objective was to evaluate the relationship between center-specific PDA management strategies (interventional or conservative) and the prevalence of BPD-PH. BPD was defined as oxygen or respiratory support at 36 weeks post-menstrual age (PMA). The presence of PH was defined as either an estimated sPAP of ≥40 mmHg or sEI ≥1.3. Center A has a conservative PDA policy. Center B has a targeted interventional policy. Results PH rates were similar between sites (21% vs 17%), while rates of PDA treatment was different (7% vs 81). Adjusted models did not demonstrate an association for center or PDA treatment exposure for PH and EI, although infants from Center A had echocardiography evidence of higher systolic eccentricity index (EI; 1.12 ± 0.19 vs 1.06 ± 0.15, p  = 0.04). Markers of RV function (TAPSE and RV-FAC) were similar between groups. Conclusion In preterm infants <29 weeks with BPD, conservative PDA treatment policy was not associated with higher rate of pulmonary hypertension diagnosis. Impact The association between PDA-management approaches and the occurrence of BPD-associated pulmonary vascular disease in premature infants has sparsely been described. We found that a conservative policy, regarding the PDA, was not associated with an increase in pulmonary hypertension diagnosis. We identified that, in patients with BPD, echocardiographic metrics of LV performance were lower.

• Publisher: Nature Publishing Group US,Nature Publishing Group
• Subject: Biomarkers / Bronchopulmonary Dysplasia - complications / Bronchopulmonary Dysplasia - therapy / Clinical Research Article / Ductus Arteriosus, Patent - complications / Ductus Arteriosus, Patent - diagnostic imaging / Ductus Arteriosus, Patent - therapy / Echocardiography / Female / Gestational Age / Humans / Hypertension, Pulmonary - complications / Hypertension, Pulmonary - epidemiology / Hypertension, Pulmonary - etiology / Hypertension, Pulmonary - therapy / Infant, Extremely Premature / Infant, Newborn / Infant, Premature / Intervention / Lung diseases / Male / Medicine / Medicine & Public Health / Newborn babies / Pediatric Surgery / Pediatrics / Premature babies / Premature birth / Prevalence / Pulmonary hypertension / Retrospective Studies / Risk Factors / Ultrasonic imaging