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 lack the ability to regulate their own temperatures.
The heat in the incubator rapidly dries the sweat of preterm newborns.
Preterm newborns have a smaller body surface area than normal newborns.
The added brown fat layer in a preterm newborn reduces his ability to generate heat.
The Correct Answer is A
Choice A rationale
Preterm newborns have underdeveloped mechanisms for thermoregulation, making it difficult for them to maintain stable body temperatures without external assistance.
Choice B rationale
Preterm newborns do not sweat significantly because their sweat glands are not fully developed; thus, this rationale is incorrect.
Choice C rationale
Preterm newborns actually have a larger body surface area relative to their weight, contributing to their difficulty in maintaining body temperature.
Choice D rationale
Preterm newborns have insufficient brown fat, not an excess, which impairs their ability to generate heat effectively.
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Correct Answer is A
Explanation
Choice A rationale
Giving the toddler a choice between two cups helps to decrease negativism by providing options that still achieve the desired outcome, thereby reducing the likelihood of refusal.
Choice B rationale
Asking the child to take medicine now offers no real choice and is likely to be met with resistance, which is characteristic of negativism in toddlers.
Choice C rationale
This question is too open-ended and can easily be refused, as it does not provide a sense of control or choice for the toddler.
Choice D rationale
Telling the child they "need" to take medicine is directive and authoritarian, which often triggers negativism and a refusal.
Correct Answer is ["A","B","C","D"]
Explanation
Step 1 is to convert the child's weight from pounds to kilograms: 28 lb ÷ 2.2 lb/kg = 12.727 kg.
Step 2 is to calculate the dose: 10 mg/kg × 12.727 kg = 127.27 mg.
Step 3 is to determine how many mL is needed: 127.27 mg ÷ (120 mg/5 mL) = 5.3029 mL.
Step 4 is to round to the nearest tenth: 5.3 mL. Final answer: 5.3 mL