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:
Applying crushed cabbage leaves to the breasts can be a traditional remedy to help reduce swelling and discomfort associated with engorgement.
Choice B rationale:
Wearing a snug-fitting bra can help provide support to the breasts and reduce discomfort from breast engorgement. It can also help to avoid stimulation of the breasts, which can decrease milk production in a client who is not breastfeeding. This is an appropriate comfort measure for the client.
Choice C rationale:
Stimulating the nipples by squeezing softly can lead to increased milk production and exacerbate breast engorgement. For a client who is not breastfeeding, this action is not recommended and may worsen the engorgement.
Choice D rationale:
Applying ice packs to the breasts can help reduce inflammation and alleviate discomfort from breast engorgement. This is an appropriate comfort measure for the client who is not breastfeeding.
Correct Answer is D
Explanation
Choice A rationale:
One ounce is equivalent to 29.57 ml (30 mls when rounded off to the nearest whole number). This conversion is essential in pediatric care, especially when administering medications to infants, as doses are often prescribed in milliliters.
Choice B rationale:
One ounce is equivalent to 29.57 ml (30 mls when rounded off to the nearest whole number). This conversion is essential in pediatric care, especially when administering medications to infants, as doses are often prescribed in milliliters.
Choice C rationale:
One ounce is equivalent to 29.57 ml (30 mls when rounded off to the nearest whole number). This conversion is essential in pediatric care, especially when administering medications to infants, as doses are often prescribed in milliliters.
Choice D rationale:
One ounce is equivalent to 29.57 ml (30 mls when rounded off to the nearest whole number). This conversion is essential in pediatric care, especially when administering medications to infants, as doses are often prescribed in milliliters.
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