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?
Basal metabolic rate reduction.
Brown fat production.
Shivering.
Cold stress.
The Correct Answer is D
Choice A reason:
Basal metabolic rate reduction. This is incorrect because a newborn under a radiant heat warmer will have an increased basal metabolic rate, not a reduced one. The basal metabolic rate is the amount of energy the body uses at rest, and it is influenced by temperature. A warmer environment will stimulate the newborn's metabolism and increase the energy expenditure. • Choice B reason:
Brown fat production. This is incorrect because a newborn under a radiant heat warmer will have less need for brown fat production, not more. Brown fat is a type of fat tissue that generates heat by burning calories. It is found in newborns and helps them maintain their body temperature in cold environments. A warmer environment will reduce the need for brown fat activation. • Choice C reason:
Shivering. This is incorrect because a newborn under a radiant heat warmer will not shiver, but shivering is not the main mechanism of heat production in newborns. Shivering is an involuntary contraction of muscles that generates heat by increasing metabolism. Newborns have limited ability to shiver because of their immature nervous system and low muscle mass. They rely more on brown fat and increased metabolic rate to produce heat. • Choice D reason:
Cold stress. This is correct because a newborn under a radiant heat warmer will prevent cold stress, which is a condition where the newborn's body temperature drops below normal and causes adverse effects. Cold stress can impair oxygen delivery, increase acidosis, decrease blood glucose, and increase the risk of infection and bleeding. A radiant heat warmer provides a neutral thermal environment for the newborn and prevents heat loss by radiation.
: 1 : 2 : 3 : 4.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason:
Assisting the client on a bedpan to urinate is important for assessing urinary output and preventing bladder distension. However, in this situation, the priority is to assess and manage postpartum hemorrhage, which is indicated by the excessive bleeding.
Choice B reason:
Increasing the client's fluid intake is generally a good measure for promoting hydration and maintaining blood volume. However, it is not the priority in this scenario of excessive postpartum bleeding.
Choice C reason:
Palpating the client's uterine fundus is the priority nursing intervention at this time. The excessive bleeding indicated by saturating two perineal pads in a 30-minute period suggests postpartum hemorrhage, which can result from uterine atony (failure of the uterus to contract adequately after childbirth). Palpating the fundus allows the nurse to assess if the uterus is firm or boggy, and if it is not contracting properly, immediate interventions can be initiated to control the bleeding.
Choice D reason:
Preparing to administer oxytocic medication (such as oxytocin) can help stimulate uterine contractions and prevent or manage postpartum hemorrhage. However, the priority is to first assess the uterine fundus and confirm the cause of the excessive bleeding before administering any medication.
Correct Answer is B
Explanation
Choice A reason:
Changing the patient's gown may be necessary for comfort and hygiene, but it is not the priority after an amniotomy. The main concern is the well-being of the fetus and the mother.
Choice B reason:
Assessing the fetal heart rate is the priority after an amniotomy. This procedure involves rupturing the amniotic sac, which may lead to changes in the fetal environment. Monitoring the fetal heart rate helps determine if the baby is tolerating the procedure well and if there are any signs of distress.
Choice C reason:
Estimating the amount of amniotic fluid is essential during an amniotomy, but it is not the top priority. The focus should be on evaluating the fetal well-being first.
Choice D reason:
Assessing the color of the amniotic fluid is significant, but it is not the primary concern immediately after an amniotomy. While changes in fluid color may indicate certain conditions, the fetal heart rate assessment takes precedence in this situation.
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