Parental Report of Indoor Air Pollution is Associated with Respiratory Morbidities In Bronchopulmonary Dysplasia.

To determine the association between indoor air pollution and respiratory morbidities in children with bronchopulmonary dysplasia recruited from the multicenter Bronchopulmonary Dysplasia (BPD) Collaborative. A cross-sectional study was performed among participants less than 3 years old in the BPD Collaborative Outpatient Registry. Indoor air pollution was defined as any reported exposure to tobacco or marijuana smoke, electronic cigarette emissions, gas stoves, and/or wood stoves. Clinical data included acute care use and chronic respiratory symptoms in the past 4 weeks. A total of 1,011 subjects born at a mean gestational age of 26.4 ± 2.2 weeks were included. Most (66.6%) had severe BPD. Over 40% of subjects were exposed to at least one source of indoor air pollution. The odds of reporting an emergency department visit (OR 1.7 [1.18, 2.45], antibiotic use (OR 1.9 [1.12, 3.21]), or a systemic steroid course (OR 2.18 [1.24, 3.84]) were significantly higher in subjects reporting exposure to secondhand smoke (SHS) compared with those without SHS exposure. Subjects reporting exposure to air pollution (not including SHS) also had a significantly greater odds (OR 1.48 [1.08, 2.03]) of antibiotic use as well. Indoor air pollution exposure (including SHS) was not associated with chronic respiratory symptoms or rescue medication use. Exposure to indoor air pollution, especially SHS, was associated with acute respiratory morbidities, including ED visits, antibiotics for respiratory illnesses, and systemic steroid use.

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