A nurse is caring for a preterm newborn who is in an incubator to maintain a neutral thermal environment. The father of the newborn asks the nurse why this is necessary.
Which of the following responses should the nurse make?
“Preterm newborns have a smaller body surface area than normal newborns”
“Preterm newborns lack adequate temperature control mechanisms”
“The heat in the incubator rapidly dries the sweat of preterm newborns”
“The added brown fat layer in preterm newborn reduces his ability to generate heat” .
The Correct Answer is B
Choice A rationale
While it is true that preterm newborns have a smaller body surface area than full-term newborns, this is not the primary reason for using an incubator. A smaller body surface area can contribute to heat loss, but the main issue is the lack of adequate temperature control mechanisms.
Choice B rationale
Preterm newborns lack the adequate temperature control mechanisms that full-term newborns have. They have less subcutaneous fat to insulate them and a higher surface area to volume ratio, which increases heat loss. They also lack the ability to shiver to generate heat.
Therefore, an incubator is used to maintain a neutral thermal environment.
Choice C rationale
The heat in the incubator does not rapidly dry the sweat of preterm newborns. In fact, preterm newborns do not sweat as efficiently as full-term newborns or adults, so they are less likely to lose heat through sweating.
Choice D rationale
The statement that the added brown fat layer in preterm newborn reduces his ability to generate heat is incorrect. In fact, preterm newborns have less brown fat than full-term newborns. Brown fat is a type of fat that generates heat when metabolized, and it is an important source of heat for newborns.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C"]
Explanation
The correct answers are A. Start breastfeeding with the nipple that is less sore, B. Change the infant’s position on the nipples, and C. Apply breast milk to the nipples before each feeding.
Choice A rationale:
Starting breastfeeding with the nipple that is less sore can help reduce discomfort. The baby tends to suck more vigorously at the beginning of a feeding, so starting with the less sore nipple can minimize pain.
Choice B rationale:
Changing the infant’s position on the nipples can help distribute the pressure more evenly and prevent further irritation of sore areas. Different positions can also help ensure a better latch.
Choice C rationale:
Applying breast milk to the nipples before each feeding can soothe and promote healing of sore nipples. Breast milk has natural antibacterial properties and can help keep the nipples moisturized.
Choice D rationale:
Massaging the breasts and nipples prior to feeding is not typically recommended for reducing nipple soreness. It can potentially cause more irritation and discomfort.
Choice E rationale:
Placing breast pads inside the nursing bra can help absorb leakage and keep the nipples dry, but it does not directly reduce soreness during breastfeeding. It is more of a preventive measure to maintain hygiene.
Correct Answer is A
Explanation
Choice A rationale
Applying lotion to the newborn’s skin during phototherapy is not recommended. Lotion can block the light from reaching the skin and reduce the effectiveness of the treatment.
Choice B rationale
Covering the newborn’s eyes with a mask during phototherapy is a standard practice. This is done to protect the newborn’s eyes from the intense light used in phototherapy.
Choice C rationale
An increase in stool frequency is expected during phototherapy. This is because phototherapy helps to break down bilirubin, which is then excreted in the stool.
Choice D rationale
A pink rash on the newborn’s trunk does not require intervention during phototherapy. It could be a common newborn rash that will resolve on its own.
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