What is true regarding FAS and NAS?

Choice A reason:

Scant scalp hair is not an expected finding for a newborn who is post-term. Scant scalp hair is more common in preterm infants who have not developed fully.

Choice B reason:

Copious vernix is not an expected finding for a newborn who is post-term. Vernix is a white, cheesy substance that covers the skin of the fetus and protects it from the amniotic fluid. Vernix is usually abundant in preterm infants and decreases as gestation progresses.

Choice C reason:

Increased subcutaneous fat is not an expected finding for a newborn who is post-term. Increased subcutaneous fat is a sign of adequate nutrition and growth, which is more likely in term infants. Post-term infants may have reduced subcutaneous fat due to placental insufficiency and decreased nutrient supply.

Choice D reason:

Dry, cracked skin is an expected finding for a newborn who is post-term. Dry, cracked skin is a result of prolonged exposure to the amniotic fluid, which causes dehydration and desquamation of the skin. Post-term infants may also have meconium staining on their skin due to fetal distress.

Choice A reason:

Using illicit drugs is not a known cause of congenital hip dysplasia. Illicit drugs may have other harmful effects on the baby, but they do not affect the formation of the hip joint.

Choice B reason:

Unknown. The exact cause of congenital hip dysplasia is not clear. Both genetic and environmental factors seem to play a role in the development of the disorder. Some risk factors include being female, firstborn, breech position, family history, and tight swaddling.

Choice C reason:

Being in nursing school is not a cause of congenital hip dysplasia. This is an irrelevant and incorrect choice.

Choice D reason:

Drinking too much is not a cause of congenital hip dysplasia. Alcohol consumption during pregnancy may increase the risk of fetal alcohol syndrome and other complications, but it does not affect the formation of the hip joint.