A nurse places a newborn under a radiant heat warmer after birth.
The purpose of this action is to prevent which of the following in the newborn?
Shivering.
Cold stress.
Brown fat production.
Basal metabolic rate reduction.
The Correct Answer is B
Choice A rationale
Shivering is not a primary concern for newborns as they have limited ability to shiver. Instead, they rely on non-shivering thermogenesis to maintain body temperature.
Choice B rationale
Cold stress is a significant concern for newborns as it can lead to hypothermia, increased oxygen consumption, and metabolic acidosis. Placing a newborn under a radiant heat warmer helps maintain their body temperature and prevent cold stress.
Choice C rationale
Brown fat production is a natural process in newborns that helps generate heat. However, the primary purpose of using a radiant heat warmer is to prevent cold stress, not to stimulate brown fat production.
Choice D rationale
Basal metabolic rate reduction is not the primary concern. The focus is on preventing cold stress and maintaining the newborn’s body temperature.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
The Babinski reflex is elicited by stroking the outer edge of the sole of the newborn’s foot, moving up toward the toes. This causes the big toe to move upward and the other toes to fan out.
Choice B rationale
Turning the newborn’s head quickly to one side is used to elicit the tonic neck reflex, not the Babinski reflex.
Choice C rationale
Holding the newborn vertically and allowing one foot to touch the table surface is used to elicit the stepping reflex, not the Babinski reflex.
Choice D rationale
Clapping near the crib and making a loud noise is used to elicit the startle (Moro) reflex, not the Babinski reflex.
Correct Answer is C
Explanation
Choice A rationale
Faint red marks on the plantar surface are more common in preterm infants and are not typically seen in post-term infants.
Choice B rationale
Copious vernix is usually seen in preterm infants. Post-term infants often have little to no vernix.
Choice C rationale
Dry, cracked skin is a common finding in post-term infants due to prolonged exposure to the amniotic fluid.
Choice D rationale
Scant scalp hair is more common in preterm infants. Post-term infants usually have more developed hair.
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