what is the therapeutic action of phenytoin
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Nursing Elites

ATI RN

ATI Pharmacology Proctored Exam 2024

1. What is the therapeutic action of Phenytoin?

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 a new prescription for Folic Acid. Which of the following client statements indicates an understanding of the teaching?

Correct answer: C

Rationale: The correct answer is C. Folic acid is naturally found in green, leafy vegetables such as spinach and broccoli. Increasing the intake of these vegetables can supplement the prescribed folic acid and help maintain adequate levels in the body. It is essential to understand that dietary sources of folic acid can complement the medication and support overall health. Choices A, B, and D are incorrect because taking folic acid with food, monitoring for skin rash, or stopping the medication if feeling nauseous do not directly relate to enhancing the therapeutic effects of folic acid through dietary intake.

3. A client has a new prescription for Captopril. Which of the following instructions should the nurse include?

Correct answer: C

Rationale: The correct answer is to instruct the client to notify the provider if they develop a persistent cough. A persistent cough is a common adverse effect of Captopril and other ACE inhibitors. It is essential for the client to inform their healthcare provider promptly if this side effect occurs, as it may indicate a potentially serious issue that needs medical attention.

4. A patient with hypertension is taking an ACE inhibitor to lower blood pressure. What should the nurse advise the patient to avoid in their diet?

Correct answer: C

Rationale: Patients taking ACE inhibitors should avoid salt substitutes as they often contain potassium, which can lead to hyperkalemia. Hyperkalemia is an elevated level of potassium in the blood that can be dangerous, especially for patients on ACE inhibitors. Vinegar, apples, and tomatoes do not pose a risk for patients taking ACE inhibitors. Therefore, the nurse should advise the patient to avoid salt substitutes to prevent potential complications.

5. A client has a prescription for hydrochlorothiazide to treat hypertension. The nurse should monitor the client for which of the following adverse effects?

Correct answer: A

Rationale: Hydrochlorothiazide is a diuretic that can cause potassium loss, leading to hypokalemia. Monitoring potassium levels is crucial to prevent potential adverse effects such as cardiac arrhythmias and muscle weakness.

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