[Etiology and prevention of neonatal pneumothorax].

ABSTRACT

OBJECTIVE: To investigate the risk factors and preventative measures for neonatal pneumothorax. METHODS: Retrospective analysis was performed on the clinical data of 2286 neonates who were hospitalized in the neonatal intensive care unit between October 2010 and November 2011, and a case-control study was conducted to analyze the risk factors and preventative measures for neonatal pneumothorax. RESULTS: The incidence of pneumothorax among the neonates was 1.57% (36/2286), and it was significantly higher in full-term infants than in preterm infants (23/1033 vs 13/1253, P=0.023). Logistic regression analysis indicated that cesarean section, neonatal respiratory distress syndrome (NRDS), wet lung, pneumonia and mechanical ventilation were the independent risk factors for neonatal pneumothorax (odds ratios=7.951, 6.090, 7.898, 6.272 and 4.389; P<0.05 for all). The higher the peak inspiratory pressure (PIP) during mechanical ventilation, the higher the incidence of neonatal pneumothorax (P<0.001). Pulmonary surfactant reduced the incidence of pneumothorax among neonates with NRDS (2.9% vs 10.1%; P=0.006). CONCLUSIONS: Neonatal pneumothorax occurs mostly in full-term infants. Cesarean section, NRDS, wet lung, pneumonia and mechanical ventilation are closely associated with neonatal pneumothorax. Strict management of indications for cesarean section, keeping PIP at a low level during mechanical ventilation, and use of pulmonary surfactant are helpful in preventing neonatal pneumothorax.