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 B
Explanation
Choice A rationale
Erythema toxicum is a common, benign rash in newborns but does not cause swelling that crosses suture lines.
Choice B rationale
A caput succedaneum is swelling of the scalp that crosses suture lines and is caused by prolonged pressure on the head during delivery.
Choice C rationale
Mongolian spots are benign, flat, congenital birthmarks with wavy borders and irregular shapes, typically found on the lower back and buttocks, not the head.
Choice D rationale
A cephalhematoma is a collection of blood between the skull bone and its periosteum that does not cross suture lines. .
Correct Answer is C
Explanation
Choice A rationale
Monitoring blood glucose levels frequently is important for newborns, especially those at risk for hypoglycemia. However, it does not directly prevent jaundice. Jaundice is caused by elevated bilirubin levels, which are not directly related to blood glucose levels.
Choice B rationale
Beginning phototherapy immediately is a treatment for jaundice, not a preventive measure. Phototherapy is used to reduce high bilirubin levels in newborns who already have jaundice.
Choice C rationale
Initiating early feeding is an effective way to prevent jaundice in newborns. Early feeding helps promote regular bowel movements, which aids in the excretion of bilirubin from the body, thereby reducing the risk of jaundice.
Choice D rationale
Preparing for a blood transfusion is a treatment for severe jaundice, not a preventive measure. Blood transfusions are used in cases of extreme hyperbilirubinemia that do not respond to other treatments.