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 A
Explanation
Choice A rationale:
The correct guidance includes giving the newborn sponge baths until the cord stump falls off, which helps to keep the area dry. It is essential to keep the umbilical cord stump clean and dry to prevent infection. Submerging the cord stump in water could increase the risk of infection.
Choice B rationale:
Covering the cord with the diaper is not advisable. The diaper could trap moisture around the cord stump, leading to a higher risk of infection. The cord stump should be exposed to air as much as possible to aid in drying and healing.
Choice C rationale:
Washing the cord with mild soap and water is not necessary and could introduce moisture, which should be avoided. Instead, the stump should be cleaned gently with a soft, dry cloth if it gets dirty.
Choice D rationale:
Wrapping the cord in petroleum jelly gauze is not a recommended practice. Applying petroleum jelly or other substances to the cord stump can interfere with the drying process and increase the risk of bacterial growth, leading to infection.
Correct Answer is C
Explanation
Choice A rationale:
Wearing a supportive bra can actually help to manage engorgement, so it's not recommended to avoid wearing one during the day.
Choice B rationale:
Cold compresses are typically applied after feeding to reduce swelling, not before. Applying them before might hinder the milk let-down reflex.
Choice C rationale:
Frequent feeding can help to alleviate engorgement by ensuring that the breasts are being emptied regularly.
Choice D rationale:
Stopping breastfeeding until finishing antibiotics is not advisable, as it can lead to decreased milk supply and potential issues with engorgement. Antibiotics prescribed by a healthcare provider are usually safe to take while breastfeeding, and interrupting breastfeeding can exacerbate the engorgement problem. This choice is not appropriate for managing breast engorgement and is therefore incorrect.
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