Oxygenated blood from lungs is carried to heart by

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Respiratory System NCLEX Questions Questions

Question 1 of 5

Oxygenated blood from lungs is carried to heart by

Correct Answer: B

Rationale: The correct answer is B: Pulmonary vein. Oxygenated blood from the lungs is carried to the heart by the pulmonary vein. After receiving oxygen in the lungs, blood returns to the heart via the pulmonary veins to be pumped to the rest of the body. The pulmonary artery (A) carries deoxygenated blood from the heart to the lungs. The coronary vein (C) drains deoxygenated blood from the heart muscle. Pre-cavals (D) is not a term used in the context of blood circulation.

Question 2 of 5

Mammalian lungs have numerous alveoli for

Correct Answer: D

Rationale: The correct answer is D because alveoli increase the surface area for gaseous diffusion, facilitating efficient exchange of oxygen and carbon dioxide in the lungs. Alveoli are tiny air sacs where gas exchange occurs. Option A is incorrect as alveoli do not affect the volume of inspired air. Option B is incorrect as alveoli do not play a role in maintaining lung shape. Option C is incorrect as alveoli do not increase muscles in the lungs for elasticity. Therefore, the primary function of alveoli is to increase surface area for gaseous diffusion, making option D the correct choice.

Question 3 of 5

A client is receiving oxygen at 4 L per nasal cannula. What comfort measure may the nurse delegate to assistive personnel (AP)?

Correct Answer: A

Rationale: The correct answer is A because applying water-soluble ointment to nares and lips helps prevent skin breakdown and discomfort caused by the oxygen flow. This task is within the scope of practice for assistive personnel (AP) as it does not require specialized medical knowledge or training. Choice B is incorrect because adjusting oxygen flow should only be done by licensed healthcare providers based on the client's prescribed oxygen therapy. Choice C is incorrect as replacing oxygen tubing requires knowledge of oxygen delivery systems and potential risks associated with incorrect tubing selection. Choice D is incorrect because turning the client every 2 hours is a nursing intervention related to preventing pressure ulcers, not specifically related to oxygen therapy comfort measures.

Question 4 of 5

The charge nurse on a medical unit is preparing to admit several "clients" who have possible pandemic flu during a preparedness drill. What action by the nurse is best?

Correct Answer: B

Rationale: The correct answer is B because in a pandemic flu scenario, it is crucial to inquire about recent travel history to identify potential exposure risks. This information can help determine if the "clients" have been in high-risk areas or in contact with infected individuals. This step is essential for implementing appropriate infection control measures and preventing the spread of the virus. Choice A is incorrect because Contact Precautions are not typically used for airborne infections like the flu. Choice C is incorrect as it discriminates against pregnant caregivers without any evidence-based rationale. Choice D is incorrect because enhanced Droplet Precautions are more suitable for diseases spread through respiratory droplets, not necessarily for pandemic flu with potential airborne transmission.

Question 5 of 5

Which of the following nursing activities is most important when a client comes back from a respiratory test if they have respiratory problems?

Correct Answer: B

Rationale: The correct answer is B. Assessing the airway is critical immediately after a respiratory test, especially if the client has pre-existing respiratory issues. A (rest) is secondary until stability is confirmed. C and D involve education, which is important but not urgent compared to ensuring airway patency.

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