The most accurate physiologic reason for respiratory distress in respiratory distress syndrome (RDS) is:
1. Altered surface tension causes fluid and protein leak, preventing atelectasis and ground glass appearance on CXR.
2. Infants with RDS are premature and incidence of RDS increases with increased gestational age.
3. Infants with RDS have a decreased number of alveoli, increased surface tension, and decreased AP diameter, limiting lung development.
4. Infants with RDS have altered surface tension, which produces hyaline membrane, atelectasis, and hypoventilation.
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1. The hypoventilation occurring in RDS causes an increased risk.
2. RDS can occur in any gestational age neonate.
3. The neonates have damage to the alveoli, not a decreased number.
4. Infants with RDS have altered surface tension, which produces, hyaline membrane, atelectasis and hypoventilation.
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