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First page of Association between Pneumothorax and Neonatal Outcomes among Very Preterm Infants: A Multicenter Cohort Study

Introduction: We aimed to evaluate whether the incidence of pneumothorax is associated with adverse neonatal outcomes in very preterm infants. Methods: This multicenter cohort study included all infants with a gestational age of 24 to 31 weeks, admitted to the tertiary neonatal intensive care units of the Chinese Neonatal Network, from 2019 to 2022. Pneumothorax was diagnosed via chest X-ray or lung computed tomography. The primary outcome was a composite measure of mortality and/or any severe neonatal morbidity. Multivariable logistic or linear regression analyses were performed to assess the association between pneumothorax and neonatal outcomes. Propensity score matching was used to ensure the robustness of the results. Results: Among the 37,917 infants in the study, 465 (1.2%) developed pneumothorax. pneumothorax was significantly associated with a higher risk of mortality and/or severe neonatal morbidity (adjusted odds ratio = 3.15, 95% confidence interval: 2.36, 4.20). Pneumothorax exposure was also independently associated with increased mortality, severe intraventricular haemorrhage, moderate or severe bronchopulmonary dysplasia, and the need for invasive ventilation and its duration. Additionally, pneumothorax was associated with an increased length of hospital stay among survivors (adjusted odds ratio = 7.62, 95% confidence interval: 4.33, 10.91). The usage of high-frequency invasive mechanical ventilation before pneumothorax and pneumothorax treated with an intercostal chest drain seemed to have the most significant harmful effect (adjusted odds ratios were 3.34 and 3.27 respectively). Conclusion: Our study underscores the significant impact of pneumothorax on increasing mortality and severe morbidities in very preterm infants.

S. Karger AG, Basel
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2025
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