Abstract
Objective: To test the clinical efficacy of exogenous surfactant for treatment of neonatal respiratory distress syndrome (RDS).Methods: In a retrospective multicenter observational study,data were collected on 987 infants of 23-30 weeks' gestation given surfactant for respiratory problems within 3 h of birth. Obstetric, neonatal and short-term outcome data were retrieved from recordingcharts and analyzed after subdivision of the sample into two treatment groups: prophylaxis (surfactant within 15 min) and early rescue (surfactant at 16-180 min).Results: A total of 965 infantswere eligible for the study: 244 receiving prophylaxis and 721 receiving early rescue. The prophylaxis group had lower gestational ages and birth weights than the early rescue group (p = 0.0001),but were otherwise comparable. Natural surfactants were used in > 90% of infants in both groups. The rates of retreatments and the mean total doses of surfactant were similar in both groups. Babies receivingprophylaxis presented less grade 3-4 RDS than those receiving early rescue (32.4% vs. 53.8%, p = 0.0001). Those requiring prophylaxis also needed lower peak inspiratory pressure and had a shorterduration of oxygen therapy. Mortality and complications were similar between the groups, but babies receiving prophylaxis had less pulmonary interstitial emphysema (p = 0.0006) and periventricularleukomalacia (p = 0.0113) than infants receiving early rescue.Conclusions: In clinical practice, prophylaxis was preferred in babies with lower birth weights and gestational ages compared toearly rescue treatment. Not surprisingly, infants treated with prophylactic surfactant had a lower rate of RDS than the infants treated by early rescue, even though they did not need less surfactant overall.
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