Observational studyBMJ open2025
Prenatal particulate matter exposure and risk of bronchopulmonary dysplasia in very preterm infants: a retrospective cohort study.
Observational study in BMJ open, 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
15 authors.
Funding
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Abstract
objectivesTo investigate the associations between maternal fine particulate matter (PM
designRetrospective observational cohort study.
settingA tertiary neonatal intensive care unit in China, 2016-2022.
participants2223 VPIs hospitalised during the study were enrolled after excluding infants with severe congenital malformations, those who abandoned treatment and those who died before discharge. Of these, 59.8% were male. PRIMARY AND SECONDARY OUTCOME MEASURES: We evaluated the effect of maternal PM
resultsAmong 2223 VPIs included in this study, 684 (30.8%) were diagnosed with BPD. Strong correlations were observed between PM exposure and BPD, with each IQR increase during the entire gestational period associated with ORs of 1.254 (95% CI 1.062 to 1.484) for PM
conclusionsMaternal PM exposure, particularly during the second trimester, is significantly associated with BPD in VPIs, with heightened vulnerability in males and infants with lower GA and BW. These findings underscore the need for prenatal air quality interventions and targeted monitoring of high-risk subgroups. Future research should explore PM-induced mechanisms of fetal lung injury and validate these associations in multicentre cohorts.
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