A nurse is providing teaching to the guardians of a preterm newborn about temperature instability. Which of the following statements should the nurse make?
Preterm newborns might have a thick layer of brown fat that can cause them to quickly become overheated.
Preterm newborns might shiver to warm up when they get too cool.
Preterm newborns might sweat to cool off when they get too warm.
Preterm newborns might have less muscle tone which exposes more body surfaces to heat loss.
The Correct Answer is D
Choice A rationale
Preterm newborns do not have a thick layer of brown fat. Brown fat is a type of fat that generates heat and is typically found in full-term newborns. It helps them maintain their body temperature. Preterm newborns have less brown fat, which makes them more susceptible to hypothermia.
Choice B rationale
Shivering is a mechanism used by the body to generate heat when it’s cold. However, preterm newborns cannot shiver. Their nervous systems are not fully developed, and they lack the muscle coordination necessary to shiver.
Choice C rationale
Sweating is another mechanism the body uses to regulate temperature. When the body is too warm, it produces sweat to cool down. However, preterm newborns do not sweat to cool off when they get too warm. Their sweat glands are not fully developed, and they may not be able to sweat effectively.
Choice D rationale
Preterm newborns have less muscle tone, which exposes more body surfaces to heat loss. Muscle tone provides insulation and generates heat. Because preterm newborns have less muscle mass, they have less insulation and generate less heat, making them more susceptible to hypothermia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Providing the newborn with 15 mL glucose water after each feeding is not a recommended action for a newborn undergoing phototherapy for jaundice. While maintaining adequate hydration is important, feedings should consist of breast milk or formula, unless otherwise directed by a healthcare provider.
Choice B rationale
Before starting phototherapy, it’s important to protect the newborn’s eyes from the light by applying eye patches. This can help prevent potential damage to the retinas.
Choice C rationale
Applying hydrating lotion to the newborn’s skin prior to treatment is not a recommended action for a newborn undergoing phototherapy for jaundice. The light needs to be able to penetrate the skin in order to break down the bilirubin, and applying lotion could potentially interfere with this process.
Choice D rationale
Turning the newborn every hour is not a recommended action for a newborn undergoing phototherapy for jaundice. While it’s important to change the newborn’s position regularly to ensure that all areas of the skin are exposed to the light, this does not need to be done on an hourly basis.
Correct Answer is A
Explanation
Choice A rationale
Placenta previa is a condition where the placenta partially or completely covers the cervix. Vaginal bleeding, often without pain, is a key symptom and requires immediate medical attention.
Choice B rationale
While a fetal heart rate of 174 bpm is slightly above the normal range (110-160 bpm), it is not the most critical finding in a patient with complete placenta previa.
Choice C rationale
A fundal height of 33 cm at 32 weeks of gestation is within the expected range and does not require immediate follow-up.
Choice D rationale
An abdomen that is soft and non-tender is a normal finding and does not require immediate follow-up.
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