Which factor could contribute to an SGA newborn's risk of respiratory distress?

• A. Full-term delivery only
• B. Overweight parents
• C. Intrauterine growth restriction
• D. Identification of macrosomia

Answer: (C)

An SGA (Small for Gestational Age) newborn is one whose birth weight is below the 10th percentile for their gestational age. One significant factor that contributes to an SGA newborn's risk of respiratory distress is intrauterine growth restriction (IUGR). IUGR occurs when the fetus does not grow at a normal rate inside the womb, which can be due to various maternal factors such as poor nutrition, high blood pressure, placental issues, or infections.

When IUGR is present, the newborn is often underdeveloped, which can lead to complications, including respiratory distress syndrome. This occurs because the lungs may not have matured properly due to inadequate space and resources for growth within the uterus. Proper lung development is critical for the newborn’s ability to breathe effectively after birth. Thus, IUGR directly increases the likelihood of respiratory complications, making it a crucial factor in assessing the health of an SGA infant.

Other factors such as the weight of the parents or the identification of macrosomia (a condition where the baby is larger than normal) do not have the same direct implications for respiratory distress in SGA newborns. Full-term delivery alone does not ensure healthy growth, as SGA infants can be delivered at