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.
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Correct Answer is C
Explanation
Choice A rationale
Applying a 1-2 cm ribbon from outer to inner canthus is incorrect because it increases the risk of contamination and infection by moving from a less clean area to a more clean area.
Choice B rationale
Applying a 2-3 inch ribbon from inner to outer canthus is incorrect because the length of the ribbon is too long and the direction is not recommended for preventing contamination.
Choice C rationale
Applying a 1-2 cm ribbon from inner to outer canthus is correct as it minimizes the risk of contamination by moving from a cleaner area to a less clean area, ensuring proper application of the ointment.
Choice D rationale
Applying a 1-2 inch ribbon to the upper eyelid is incorrect because the upper eyelid is not the recommended site for application, and the length of the ribbon is too long.
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.