Exhibit 1. A nurse understands which of the following assessment findings as a priority to indicate that a newborn may be experiencing cold stress and burning brown fat to produce heat? (Select all that apply.).
Respiratory distress.
Hyperglycemia.
Metabolic alkalosis.
Hypoglycemia.
Correct Answer : A,D
Choice A rationale:
Respiratory distress is a priority assessment finding that indicates a newborn may be experiencing cold stress. Cold stress can cause the baby's body to burn brown fat to generate heat, leading to increased oxygen demand and respiratory distress as a compensatory mechanism.
Choice B rationale:
Hyperglycemia is not associated with cold stress. Instead, hypoglycemia (low blood sugar) is a concern in newborns experiencing cold stress as they deplete their glucose stores to maintain body temperature.
Choice C rationale:
Metabolic alkalosis is not a priority assessment finding for cold stress. Metabolic acidosis (not listed in the options) can be associated with cold stress due to increased anaerobic metabolism, but it is not one of the provided choices.
Choice D rationale:
Hypoglycemia is a priority assessment finding associated with cold stress. As the baby's body uses glucose to produce heat from burning brown fat, it can lead to a drop in blood sugar levels, which is a significant concern in newborns.
Choice E rationale:
Metabolic acidosis is not listed among the provided choices, but it can be associated with cold stress due to the increased production of lactic acid from anaerobic metabolism when trying to generate heat.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
Providing a heat source for the newborn is not the purpose of surfactant. Surfactant is a substance produced in the lungs to reduce surface tension and prevent alveolar collapse during expiration. It helps with the exchange of gases, but it does not generate heat.
Choice B rationale:
This is the correct answer. Surfactant plays a crucial role in assisting the alveoli to remain open by reducing surface tension. This, in turn, allows for proper gas exchange, especially of oxygen and carbon dioxide.
Choice C rationale:
Assisting the ductus arteriosus to remain open is not the purpose of surfactant. The ductus arteriosus is a fetal blood vessel that connects the pulmonary artery to the aorta, bypassing the lungs. After birth, it should close on its own, and surfactant does not influence this process.
Choice D rationale:
Providing energy to the newborn is not the purpose of surfactant. Energy for the newborn comes from nutrition, particularly breast milk or formula, and not from surfactant
Correct Answer is ["A","B","D"]
Explanation
Choice A rationale:
The normal temperature range for a newborn measured axillary (armpit) is 97.7-99.3°F (36.5- 37.4°C). This is a crucial vital sign to monitor, as any significant deviation from this range could indicate an underlying issue requiring further evaluation.
Choice B rationale:
The newborn's heart rate varies with their activity level. While asleep, it is around 100 bpm, and when awake, it is 120-160 bpm. During crying or agitation, it can go up to 180 bpm.
Monitoring the heart rate is essential, as any abnormal values might indicate cardiac or other health problems.
Choice D rationale:
The normal respiratory rate for a newborn is 30-60 breaths per minute. Respiratory rate is a critical parameter to monitor as rapid or slow breathing could be a sign of respiratory distress or other respiratory conditions.
Choice C rationale:
Blood pressure is not routinely assessed in newborns, as it is challenging to obtain accurate readings due to their small size and physiology. Instead, other vital signs are relied upon for assessment.
Choice E rationale:
The head circumference is not included in the normal vital sign ranges. However, monitoring head circumference is crucial during infancy to track brain growth and development.
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