Nursing Elites

1. What is the therapeutic action of Phenytoin?

• A. Antidiabetic
• B. Anticonvulsant
• C. Mood stabilizer
• D. Antianxiety agent

Correct answer: B

Rationale: Phenytoin is primarily used as an anticonvulsant to prevent and control seizures. It works by stabilizing electrical activity in the brain, making it effective in managing conditions like epilepsy. Antidiabetic medications are used to regulate blood sugar levels, mood stabilizers help manage mood disorders, and antianxiety agents are used to reduce anxiety symptoms, none of which are the primary therapeutic action of Phenytoin.

2. A client has been prescribed Prednisone for asthma. Which of the following instructions should the nurse include in the teaching?

• A. Take this medication with food to prevent nausea.
• B. Take this medication at bedtime to reduce drowsiness.
• C. Take this medication in the morning to reduce insomnia.
• D. Avoid sudden changes in position.

Correct answer: C

Rationale: Prednisone is best taken in the morning to reduce the risk of insomnia, a common side effect of corticosteroids. Instructing the client to take the medication in the morning aligns with the goal of minimizing the impact of insomnia, which can disrupt sleep patterns and affect overall well-being. Choices A, B, and D are incorrect. Taking Prednisone with food does not primarily focus on preventing nausea; taking it at bedtime does not primarily reduce drowsiness, and avoiding sudden changes in position is not a specific instruction related to Prednisone use for asthma.

3. When teaching a client with a new prescription for Warfarin, which herbal supplement should the nurse instruct the client to avoid?

• A. St. John's wort
• B. Echinacea
• C. Garlic
• D. Ginseng

Correct answer: A

Rationale: The correct answer is St. John's wort. St. John's wort can reduce the effectiveness of Warfarin by interacting with its metabolism, potentially leading to decreased anticoagulant effects. Therefore, the nurse should instruct the client to avoid using St. John's wort while taking Warfarin to prevent adverse drug interactions. Echinacea, garlic, and ginseng are not the correct answers in this case. While these herbal supplements may also interact with Warfarin and affect its efficacy, St. John's wort has a well-known interaction with Warfarin that can significantly impact its anticoagulant effects. Educating the client about the specific interaction between St. John's wort and Warfarin is crucial to ensure patient safety and the medication's therapeutic benefit.

4. A client has a new prescription for Losartan. Which of the following laboratory values should the nurse monitor?

• A. Serum potassium
• B. Serum sodium
• C. Serum calcium
• D. Serum magnesium

Correct answer: A

Rationale: Corrected Rationale: Losartan, an angiotensin II receptor blocker (ARB), can cause hyperkalemia. The nurse should monitor the client's serum potassium levels closely because Losartan can increase potassium levels, potentially leading to serious complications such as arrhythmias. Monitoring serum sodium, calcium, or magnesium levels is not typically necessary when a patient is prescribed Losartan, as these values are not directly affected by this medication.

5. A client has a new prescription for Verapamil to control hypertension. Which of the following instructions should the nurse include?

• A. Increase the amount of dietary fiber in the diet.
• B. Drink grapefruit juice daily to increase vitamin C intake.
• C. Decrease the amount of calcium in the diet.
• D. Withhold food for 1 hr after taking the medication.

Correct answer: A

Rationale: Increasing dietary fiber intake is essential when taking Verapamil to prevent constipation, a common adverse effect of this medication. Verapamil is a calcium channel blocker used to treat hypertension, and dietary fiber helps maintain bowel regularity and prevent constipation that may occur as a side effect of the medication.

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