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Single Versus Repetitive Courses of Corticosteroids: What Do We Know?

Preterm birth accounts for a major and disproportionate amount of infant morbidity and mortality. Today, approximately 7–10% of infants are born preterm. Despite advances in obstetric technology, the prevalence of preterm birth in some locations has actually increased. This appears to be secondary to an increase in multiple gestations, obstetric interventions, and improved ultrasound-based estimates of gestational age. Fortunately, antenatal and neonatal interventions such as the postbirth use of inhaled surfactant have improved the outlook for these infants.