A nurse is caring for a newborn who is placed in a neutral thermal environment.What is the desired outcome of this measure?
To minimize the patient’s oxygen needs.
To facilitate the conversion of glucose to lactic acid.
To decrease the absorption of surfactant from the alveoli.
To increase the patient’s ability to metabolize brown fat stores.
The Correct Answer is A
The correct answer is choice A: To minimize the patient’s oxygen needs.
A neutral thermal environment is an environment in which a neonate maintains a normal body temperature while minimizing energy expenditure and oxygen consumption. This is important for the wellbeing of neonates, especially those who are preterm or have respiratory insufficiency.
Choice B is wrong because the conversion of glucose to lactic acid is not a desired outcome of a neutral thermal environment. This conversion occurs when there is inadequate oxygen supply to the tissues, resulting in anaerobic metabolism and metabolic acidosis.
Choice C is wrong because the absorption of surfactant from the alveoli is not affected by a neutral thermal environment.
Surfactant is a substance that reduces surface tension and prevents alveolar collapse. It is produced by type II alveolar cells and secreted into the alveoli.
Choice D is wrong because the metabolism of brown fat stores is not a desired outcome of a neutral thermal environment.
Brown fat is a specialized tissue that generates heat by nonshivering thermogenesis in response to cold stress.
It is located in the nape of the neck, between the scapulae, and around the kidneys and adrenals. It increases the metabolic rate and oxygen consumption of neonates.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is choice A. Maintaining the infants’ airways is the nurse’s priority when caring for a set of twins delivered by cesarean delivery.This is because twins are more likely to be born early and need special care after birth than single babies.They may have breathing difficulties or low oxygen levels and require oxygen therapy or ventilation.
The nurse should assess the infants’ respiratory status and intervene as needed.
Choice B is wrong because keeping the infants in a warm, draft-free environment is important but not as urgent as ensuring their airways are clear and they are breathing well.Premature twins may have trouble regulating their body temperature and need to be kept warm, but this can be done after their airways are secured.
Choice C is wrong because placing identification bands on the infants is a standard procedure but not a priority.
The nurse should make sure the infants are correctly identified and matched with their mother, but this can be done after their vital signs are stable.
Choice D is wrong because monitoring the infants’ vital signs is also important but not as urgent as maintaining their airways.
The nurse should check the infants’ heart rate, blood pressure, temperature and blood sugar levels regularly, but this can be done after their respiratory status is assessed and managed.
Normal ranges for vital signs in newborns are:
• Heart rate: 100 to 160 beats per minute
• Blood pressure: 50 to 75 mm Hg systolic and 30 to 45 mm Hg diastolic
• Temperature: 36.5 to 37.5°C (97.7 to 99.5°F)
• Blood sugar: 40 to 80 mg/dL
Correct Answer is D
Explanation
This is because epidural anesthesia can cause hypotension (low blood pressure) which can affect the placental blood flow and fetal oxygenation.
The nurse should monitor the patient’s blood pressure frequently and intervene if it drops below the baseline.
Choice A is wrong because assessing the patient’s urine for acetone is not relevant to the side effects of epidural anesthesia.Acetone in urine can indicate diabetic ketoacidosis, a complication of diabetes that occurs when the body breaks down fat for energy due to lack of insulin.
However, this is not related to epidural anesthesia.
Choice B is wrong because monitoring the patient’s deep tendon reflexes is not relevant to the side effects of epidural anesthesia.Deep tendon reflexes can be affected by magnesium sulfate, a medication used to prevent seizures in patients with preeclampsia (a condition characterized by high blood pressure and proteinuria in pregnancy).
However, this is not related to epidural anesthesia.
Choice C is wrong because assessing the patient’s pupillary accommodation is not relevant to the side effects of epidural anesthesia.
Pupillary accommodation is the ability of the eye to adjust its focus from distant to near objects.It can be impaired by drugs that affect the nervous system, such as opioids or anticholinergics.
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