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著者: J D Horbar, E C Wright, L Onstad
雑誌名: Pediatrics. 1993 Aug;92(2):191-6.
Abstract/Text
OBJECTIVE: To determine whether the introduction of surfactant therapy was associated with decreased mortality for high-risk preterm neonates weighing 601 to 1300 g at birth.
DESIGN: Before-after observational study.
SETTING: Eight tertiary care neonatal intensive care units participating in the National Institute of Child Health and Human Development Neonatal Research Network.
PATIENTS: The outcomes for neonates with birth weight 601 to 1300 g admitted in the 2 years before surfactants became available (n = 2780) were compared with those of neonates admitted in the year beginning 2 months after surfactants became available (n = 1413).
MAIN OUTCOME MEASURES: The primary outcome measure was in-hospital mortality; secondary outcome measures included durations of assisted ventilation, length of hospitalization, and neonatal morbidity.
RESULTS: Forty percent of neonates in the postsurfactant group received surfactant (range 28% to 69% at the centers). Mortality decreased from 27.8% before to 19.9% after surfactant therapy was introduced (Mantel-Haenszel chi 2 = 31.4, P = .001). The adjusted odds ratio for mortality after surfactants became available was 0.73 (95% confidence interval 0.55 to 0.95). The duration of assisted ventilation and length of hospitalization increased after surfactants were introduced (P = .0001 for both outcomes).
CONCLUSION: Mortality for neonates weighing 601 to 1300 g decreased after surfactant therapy was introduced, suggesting that the efficacy of surfactants demonstrated in randomized controlled trials will translate into effectiveness in routine clinical care.
PMID 7710456 Pediatrics. 1993 Aug;92(2):191-6.
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