Data from large neonatal databases document that infants born around the limits of viability have high mortality and morbidity rates,
1-3 which have not improved during recent years.
4 Broad application of interventions proven to be effective at more advanced gestational ages, such as antenatal corticosteroids, may improve outcomes in these infants. A single course of antenatal corticosteroids given 24 hours to 7 days before birth to women in preterm labor at less than 34 weeks' gestation improves lung maturity and reduces neonatal problems, including respiratory distress syndrome, necrotizing enterocolitis, severe intraventricular hemorrhage, and death.
5