A newborn has respiratory distress syndrome. Which of the following is the most important predisposing factor for this condition?

Question

Quizplus · Accepted Answer

Premature birth is the most important predisposing factor for respiratory distress syndrome in newborns. This is because the lungs of premature infants may not be fully developed, particularly the alveoli, which are responsible for oxygen and carbon dioxide exchange. As a result, premature infants may not have enough surfactant, a substance that helps keep the alveoli open and prevents them from collapsing, leading to respiratory distress syndrome. Low birth weight, alcohol consumption by the mother during pregnancy, and smoking by the mother during pregnancy can also increase the risk of preterm birth and thus increase the risk of respiratory distress syndrome, but they are not the most important predisposing factor.

A Newborn Has Respiratory Distress Syndrome