ArticlePediatric pulmonology2025
Risk Factors for Severe Respiratory Morbidity at 2 Years of Life in Children Born Extremely Preterm With Bronchopulmonary Dysplasia.
Article in Pediatric pulmonology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundBronchopulmonary dysplasia (BPD), defined as need for oxygen/respiratory support at 36 weeks gestational age (GA) is associated with increased risk of post-prematurity respiratory disease (PRD). We hypothesize that BPD, higher pCO2, and pulmonary hypertension (PH) before NICU discharge will predict PRD.
objectives(1) Identify clinical factors before NICU discharge associated with PRD by 2 years of age; (2) Identify clinical factors associated with emergency room (ER) visits by 2 years of age; (3) Compare predictive performance for PRD of individual and multivariable clinical factors. METHODOLOGY: Children born < 29 weeks GA with ≥ 1 echocardiogram before NICU discharge at two tertiary centers were included. Retrospective chart review included clinical factors at NICU discharge, ER visits, and respiratory-related hospitalizations by 2 years. Analysis of predictors included logistic regression and ROC.
resultsWe included 125 premature infants, of whom 53 (42%) had BPD, and 24 (19%) experienced PRD. All who experienced PRD had BPD. More severe BPD (OR: 96.1, CI: 12.4, 12, 383), but not hypercapnia or PH, were associated with PRD. On ROC analysis, combination of BPD severity, pCO2 and PH demonstrated 70% chance of PRD (AUC: 0.68 (95% CI: 0.55, 0.81). Presence of ≥ 2 factors had sensitivity of 50% and specificity of 97% for prediction of PRD. Children with BPD had 2.6 times as many ER visits as those without.
conclusionCombination of BPD severity, pCO2, and PH best predicted PRD. Identifying extremely preterm infants at high risk of developing PRD can guide counseling of families and early intervention.
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