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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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Stretching arms out and then back in is a common reflex in newborns known as the Moro reflex. It is not a sign of feeding readiness but rather a response to a sudden loss of support or a loud noise.
Choice B rationale
Turning the head toward a parent’s voice is a sign of auditory recognition and bonding, not necessarily feeding readiness. It indicates the infant’s ability to recognize familiar sounds.
Choice C rationale
Grasping a parent’s finger when placed in the infant’s palm is a primitive reflex known as the palmar grasp reflex. It is not related to feeding readiness but is a normal reflexive action in newborns.
Choice D rationale
Bringing their hand to their mouth is a sign of feeding readiness. This action indicates that the infant is hungry and ready to feed. It is an early cue that the baby is ready to eat.
Correct Answer is B
Explanation
Choice A rationale
Administering only the Hepatitis B vaccine within 1 hour of birth is not sufficient for a newborn born to a Hepatitis B positive mother. The newborn also needs Hepatitis B immunoglobulin (HBIG) to provide immediate passive immunity.
Choice B rationale
Administering both the Hepatitis B vaccine and Hepatitis B immunoglobulin (HBIG) within 12 hours of delivery is the recommended practice for newborns born to Hepatitis B positive mothers. This provides both active and passive immunity.
Choice C rationale
Administering only Hepatitis B immunoglobulin (HBIG) within 12 hours of birth is not sufficient. The newborn also needs the Hepatitis B vaccine to develop long-term immunity.
Choice D rationale
Administering Hepatitis B immunoglobulin (HBIG) within 12 hours, followed by monthly Hepatitis B vaccines for 12 months, is not the standard practice. The newborn should receive the Hepatitis B vaccine series according to the recommended schedule. .
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