The purpose of surfactant is to?
Provide a heat source for the newborn.
Assist the alveoli to remain open.
Assist the ductus arteriosus to remain open.
Provide energy to the newborn.
The Correct Answer is B
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
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Placing the newborn in a radiant warmer may provide warmth, but it does not address the observed signs of respiratory distress, jitteriness, and lethargy. These signs indicate potential respiratory and neurological issues, which need to be assessed and managed promptly.
Choice B rationale:
Initiating phototherapy is not appropriate for the observed signs of respiratory distress, jitteriness, and lethargy. Phototherapy is used to treat neonatal jaundice caused by elevated bilirubin levels, which is not evident from the given information.
Choice C rationale:
The nurse should obtain blood glucose by heel stick to assess the newborn's blood sugar levels. The signs of jitteriness and lethargy may be indicative of hypoglycemia (low blood sugar), which is common in newborns. Early detection and intervention are crucial to prevent complications and ensure the baby's well-being.
Choice D rationale:
Measuring the newborn's blood pressure is not the priority at this moment. The observed signs suggest respiratory distress and potential hypoglycemia, which need immediate attention. Blood pressure assessment may be important later on, but it is not the first action the nurse should take based on the given information.
Correct Answer is B
Explanation
Choice A rationale:
This response would not be appropriate because it provides incorrect information. Breast milk is already present in the mother's breasts during pregnancy, and the newborn's disinterest in eating is likely due to other factors.
Choice B rationale:
This is the best response because it acknowledges the mother's concern and offers a practical solution to help the newborn latch onto the breast properly. Correct latching is crucial for successful breastfeeding, and once the baby latches on correctly, they are more likely to breastfeed effectively.
Choice C rationale:
While it is true that newborns often experience deep sleep phases, attributing the disinterest in eating solely to deep sleep is not accurate. Offering support and guidance for breastfeeding would be more beneficial.
Choice D rationale:
This response oversimplifies the situation and may not address the actual reason for the newborn's disinterest in feeding. It is essential to help the mother with proper techniques rather than just waking up the baby.
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