Which observation is expected when the nurse is assessing the gestational age of a neonate born at term?
No creases on the plantar surface of the foot.
Abundant lanugo covering most of the body.
Flexed position at rest.
Pinna of the ear that remains folded.
The Correct Answer is C
Choice A rationale
The absence of creases on the plantar surface is typical of a preterm infant, not a term infant. Term infants usually have some creases.
Choice B rationale
Abundant lanugo is more common in preterm infants, while term infants may have some but not extensive lanugo.
Choice C rationale
A flexed position at rest is expected in a term neonate, as it indicates good muscle tone and neuromuscular development.
Choice D rationale
The pinna of the ear remaining folded is more indicative of a preterm infant, as term infants typically have fully formed and firmer ear cartilage.
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Correct Answer is B
Explanation
Choice A rationale
Vitamin K has no role in stabilizing blood glucose levels; hypoglycemia in newborns is managed differently.
Choice B rationale
Vitamin K is essential for blood clotting, and newborns typically have low stores at birth, necessitating supplementation to prevent bleeding disorders.
Choice C rationale
There is no established link between maternal fever and the need for vitamin K; prophylaxis is standard for all newborns regardless of maternal health.
Choice D rationale
Newborns do not have sufficient prothrombin or other clotting factors, which is why vitamin K administration is critical.
Correct Answer is A
Explanation
Choice A rationale
Preterm newborns have underdeveloped mechanisms for thermoregulation, making it difficult for them to maintain stable body temperatures without external assistance.
Choice B rationale
Preterm newborns do not sweat significantly because their sweat glands are not fully developed; thus, this rationale is incorrect.
Choice C rationale
Preterm newborns actually have a larger body surface area relative to their weight, contributing to their difficulty in maintaining body temperature.
Choice D rationale
Preterm newborns have insufficient brown fat, not an excess, which impairs their ability to generate heat effectively.