Nursing Elites

1. Prolonged exposure to high concentrations of supplemental oxygen over several days can cause which pathophysiological effect?

• A. Reduced cardiac output
• B. Disrupted surfactant production
• C. Hyperactivity of alveoli
• D. Increased oxygen carrying capacity

Correct answer: B

Rationale: Corrected Rationale: Prolonged exposure to high oxygen concentrations can disrupt the production of surfactant in the lungs, leading to atelectasis and other lung complications. Surfactant is essential for maintaining lung compliance and preventing alveolar collapse. Reduced cardiac output (Choice A) is not directly associated with prolonged oxygen exposure. Hyperactivity of alveoli (Choice C) is not a recognized consequence of high oxygen levels. Increased oxygen carrying capacity (Choice D) is not a pathophysiological effect of prolonged high oxygen exposure.

2. The nurse is teaching a client about postoperative care following a total knee arthroplasty. What instruction should the nurse prioritize?

• A. Begin ambulation as soon as possible.
• B. Use continuous passive motion therapy to maintain joint mobility.
• C. Avoid putting weight on the affected leg.
• D. Apply ice packs to reduce pain and swelling.

Correct answer: B

Rationale: The correct answer is B: 'Use continuous passive motion therapy to maintain joint mobility.' Continuous passive motion therapy is crucial in postoperative care following a total knee arthroplasty as it helps prevent stiffness and maintain joint mobility. Ambulation is important but should be guided and not immediate. Avoiding putting weight on the affected leg is also essential initially to prevent complications. Applying ice packs can help reduce pain and swelling, but it is not the priority instruction for maintaining joint mobility and preventing stiffness.

3. To auscultate for a carotid bruit, where should the nurse place the stethoscope?

• A. Base of the neck on the right side
• B. Above the clavicle
• C. Over the sternum
• D. Over the trachea

Correct answer: A

Rationale: To auscultate for a carotid bruit, the nurse should place the stethoscope at the base of the neck, near the carotid artery. A carotid bruit is an abnormal sound that indicates turbulent blood flow in the carotid artery, potentially due to arterial narrowing or atherosclerosis. Placing the stethoscope above the clavicle, over the sternum, or over the trachea would not provide the nurse with the optimal location to assess for carotid artery abnormalities.

4. A client with atrial fibrillation is prescribed warfarin. What is the most important instruction the nurse should give?

• A. Take the medication with aspirin to improve effectiveness.
• B. Increase intake of green leafy vegetables to support the medication.
• C. Avoid foods high in potassium to reduce bleeding risk.
• D. Avoid alcohol and over-the-counter medications without consulting the provider.

Correct answer: D

Rationale: The correct answer is D. Clients taking warfarin should avoid alcohol and over-the-counter medications without consulting their healthcare provider, as these can interact with warfarin and increase the risk of bleeding. Aspirin, in particular, can exacerbate this risk. Choice A is incorrect because taking warfarin with aspirin can increase the risk of bleeding. Choice B is incorrect as while green leafy vegetables contain vitamin K which can interact with warfarin, it is more important to maintain a consistent intake rather than increase it. Choice C is incorrect because foods high in potassium do not directly impact the bleeding risk associated with warfarin.

5. A client with type 1 diabetes is found unconscious with a blood glucose of 40 mg/dL. What is the nurse's priority intervention?

• A. Administer a 50% dextrose bolus intravenously.
• B. Administer glucagon intramuscularly.
• C. Provide oral glucose gel.
• D. Recheck the blood glucose level in 15 minutes.

Correct answer: A

Rationale: The correct answer is to administer a 50% dextrose bolus intravenously. In unconscious clients with hypoglycemia, IV dextrose rapidly raises the blood glucose level. Glucagon would be a slower option and is typically used if IV access is unavailable. Oral glucose gel is not appropriate for an unconscious client as it requires swallowing and may cause aspiration. Rechecking the blood glucose level in 15 minutes delays immediate treatment and could lead to further deterioration.

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