Abstract
Objective To assess the utility of clinical predictors of persistent respiratory morbidity in extremely low gestational age newborns (ELGANs). Study design We enrolled ELGANs (<29 weeks’ gestation) at ≤7 postnatal days and collected antenatal and neonatal clinical data through 36 weeks’ postmenstrual age. We surveyed caregivers at 3, 6, 9, and 12 months’ corrected age to identify postdischarge respiratory morbidity, defined as hospitalization, home support (oxygen, tracheostomy, ventilation), medications, or symptoms (cough/wheeze). Infants were classified as having postprematurity respiratory disease (PRD, the primary study outcome) if respiratory morbidity persisted over ≥2 questionnaires. Infants were classified with severe respiratory morbidity if there were multiple hospitalizations, exposure to systemic steroids or pulmonary vasodilators, home oxygen after 3 months or mechanical ventilation, or symptoms despite inhaled corticosteroids. Mixed-effects models generated with data available at 1 day (perinatal) and 36 weeks’ postmenstrual age were assessed for predictive accuracy. Results Of 724 infants (918 ± 234 g, 26.7 ± 1.4 weeks’ gestational age) classified for the primary outcome, 68.6% had PRD; 245 of 704 (34.8%) were classified as severe. Male sex, intrauterine growth restriction, maternal smoking, race/ethnicity, intubation at birth, and public insurance were retained in perinatal and 36-week models for both PRD and respiratory morbidity severity. The perinatal model accurately predicted PRD (c-statistic 0.858). Neither the 36-week model nor the addition of bronchopulmonary dysplasia to the perinatal model improved accuracy (0.856, 0.860); c-statistic for BPD alone was 0.907. Conclusion Both bronchopulmonary dysplasia and perinatal clinical data accurately identify ELGANs at risk for persistent and severe respiratory morbidity at 1 year. Trial registration ClinicalTrials.gov: NCT01435187.
Original language | English (US) |
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Pages (from-to) | 89-97.e3 |
Journal | journal of pediatrics |
Volume | 187 |
DOIs | |
State | Published - Aug 2017 |
Funding
Supported by National Heart, Lung, and Blood Institute (U01 HL101456) (PI: Aschner, Vanderbilt), (U01 HL101798) (PI: Keller, University of California, San Francisco), (U01 HL101813) (PI: Pryhuber, University of Rochester), (U01 HL101465) (PI: Hamvas, University of Washington), (U01 HL 101800) (PI: Jobe, Cincinnati Children's Hospital Medical Center), (R01 HL105702) (PI: Voynow, Duke), and (U01 HL101794) and the Eunice Kennedy Shriver National Institute of Child Health and Human Development Best Pharmaceuticals for Children Act (PI: B Schmidt). The authors declare no conflicts of interest.
Keywords
- prematurity
- pulmonary morbidity
- wheeze
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health