Efficacy of Surfactant and Perinatal Risk Factors in NRDS With Different Gestational Ages

Since exogenous surfactant replacement therapy was first used to prevent neonatal respiratory distress syndrome (NRDS)，it has become the main method of treatment of NRDS. However, in some infants, death is inevitable despite intensive care and surfactant replacement therapy, especially in near-term and term infants. The first goal of our study is to compare the therapeutic effect of pulmonary surfactant of infants at different gestational ages and to investigate whether exogenous surfactant replacement therapy is effective for all newborns with RDS. The second goal of our study is to further analyze the risk factors and causes of RDS in early preterm infants and near term/term infants.