Which of the following statements about pulmonary surfactant are true?
A. Endogenous surfactant deficiency is the key physiologic problem in preterm infants with the infant respiratory distress syndrome
B. Surfactant function can be restored to normal using aerosolized phosphatidylcholine administration
C. Exogenous surfactant replacement has been shown to reduce mortality in preterm infants with the infant respiratory distress syndrome
D. Surfactant is produced by Type I alveolar epithelial cells
Answer:A
Which of the following statements about pulmonary surfactant are true?
A. Endogenous surfactant deficiency is the key physiologic problem in preterm infants with the infant respiratory distress syndrome B. Surfactant function can be restored to normal using aerosolized phosphatidylcholine administration C. Exogenous surfactant replacement has been shown to reduce mortality in preterm infants with the infant respiratory distress syndrome D. Surfactant is produced by Type I alveolar epithelial cells