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
Explanation
The correct answer is Choice A.
Choice A rationale: Documenting the findings and continuing to monitor the client is appropriate because the nurse has already observed that the fundus is midline and firm, which indicates good uterine tone. The presence of lochia rubra and small clots is expected in the immediate postpartum period.
Choice B rationale: Encouraging the client to empty her bladder can help maintain uterine tone, but in this scenario, the fundus is already firm and midline, so this is not the priority action.
Choice C rationale: Notifying the client's provider is unnecessary at this time because the findings are within normal postpartum expectations and the uterus is firm.
Choice D rationale: Increasing the frequency of fundal massage is not needed because the uterus is already firm and midline, indicating that it is contracting properly.
Correct Answer is C
Explanation
Choice A rationale:
Perineal pad clots are not the greatest risk for this patient. While it’s important to monitor the amount and type of lochia, the nurse’s notes indicate that the patient has a moderate amount of lochia rubra, which is normal within the first few days postpartum. Large clots could indicate a problem such as a retained placental fragment, but this is not mentioned in
the scenario.
Choice B rationale:
Pelvic pain is a common complaint after childbirth due to uterine contractions, especially during breastfeeding, and usually resolves within a few days. The patient’s pain is rated as 4 on a scale of 0 to 10, which is considered moderate. While it’s important to manage the patient’s pain, it’s not the greatest risk in this scenario.
Choice C rationale:
A boggy uterus poses the greatest risk for this patient. A boggy or soft uterus indicates uterine atony, which is a lack of normal muscle tone that can lead to excessive bleeding. This is a serious condition that can lead to postpartum hemorrhage if not treated promptly. The nurse’s notes indicate that the patient’s fundus is boggy and located above the umbilicus, which is a concern. The fundus should be firm and gradually descend into the pelvis within the first few days postpartum.
Choice D rationale:
Breast engorgement is a common discomfort that occurs when the breasts are overly full with milk. It typically occurs within the first week postpartum as the milk supply increases. The nurse’s notes indicate that the patient’s breasts are soft, warm, and tender to touch, which is normal. While it’s important to manage the patient’s comfort, breast
engorgement is not the greatest risk in this scenario.
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