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. A client with hypertension is prescribed a thiazide diuretic. What dietary recommendation should the nurse make?

• A. Encourage a diet low in carbohydrates and fats.
• B. Avoid foods high in vitamin K, such as spinach and kale.
• C. Increase salt intake to prevent dehydration.
• D. Eat potassium-rich foods like bananas and oranges.

Correct answer: D

Rationale: The correct answer is D: 'Eat potassium-rich foods like bananas and oranges.' Thiazide diuretics can lead to potassium loss, so it is essential for clients to consume potassium-rich foods to maintain adequate levels. Choice A is incorrect because focusing solely on low carbohydrates and fats does not address the specific issue of potassium loss. Choice B is unrelated as vitamin K content is not a concern with thiazide diuretics. Choice C is incorrect as increasing salt intake would exacerbate hypertension and not prevent dehydration.

3. A client receiving chemotherapy for cancer treatment is experiencing nausea and vomiting. What is the nurse's best intervention to manage these symptoms?

• A. Offer frequent, small meals
• B. Administer antiemetics before meals
• C. Encourage the client to eat a high-fat diet
• D. Provide the client with cold, carbonated beverages

Correct answer: B

Rationale: Administering antiemetics before meals is the best intervention to manage nausea and vomiting in clients receiving chemotherapy. This proactive approach helps control symptoms by preventing nausea from occurring, rather than waiting to treat it once symptoms have already started. Offering frequent, small meals (choice A) may worsen symptoms in some cases due to increased stomach activity. Encouraging a high-fat diet (choice C) can be difficult for nauseated clients and may not alleviate symptoms. Providing cold, carbonated beverages (choice D) could exacerbate nausea further due to the temperature and carbonation.

4. The nurse is providing care for a client with a percutaneous endoscopic gastrostomy (PEG) tube. Which intervention should the nurse implement to prevent complications associated with the tube?

• A. Elevate the head of the bed to 15 degrees during feedings
• B. Aspirate gastric contents before administering medications
• C. Clamp the tube between feedings
• D. Flush the tube with water before and after feedings

Correct answer: D

Rationale: Flushing the PEG tube with water before and after feedings helps prevent clogging and maintains tube patency. Proper flushing is essential for avoiding complications related to tube blockages. Elevating the head of the bed is important for preventing aspiration during and after feedings, not specifically related to PEG tube complications. Aspirating gastric contents before administering medications is not routinely recommended for PEG tube care. Clamping the tube between feedings can lead to tube occlusion and is not a standard practice in PEG tube care.

5. 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.

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