Characteristics and outcomes of preterm neonates according to number of doses of surfactant received

ObjectivesTo identify characteristics and outcomes of infants who received multiple doses of surfactant vs those who received one dose or none.Study designIn this retrospective study, we included neonates of 22–28 weeks’ gestation admitted to NICUs in the Canadian Neonatal Network. Patients were divided into three groups: no surfactant, single dose, and multiple doses. The primary outcome was a composite of mortality or any of the major …