what is the therapeutic use of phenytoin
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Nursing Elites

ATI RN

ATI Pharmacology Test Bank

1. What is the therapeutic use of Phenytoin?

Correct answer: C

Rationale: Phenytoin is primarily used to diminish seizure activity and is effective in terminating ventricular arrhythmias. It works by stabilizing neuronal membranes, reducing repetitive neuronal firing, and limiting the spread of seizure activity in the brain. While phenytoin does not have a direct role in preventing thrombus formation or extending existing thrombi, it is crucial in managing seizures and certain arrhythmias.

2. A client has a prescription for Clindamycin. Which of the following instructions should the nurse include?

Correct answer: A

Rationale: The correct instruction for a client taking Clindamycin is to take the medication with a full glass of water. Clindamycin can cause esophageal irritation, so taking it with a full glass of water helps minimize this risk. Avoiding taking the medication with food is not necessary. If diarrhea occurs, clients should not discontinue the medication without consulting their healthcare provider. Clindamycin is not known to cause increased appetite.

3. What is a common side effect that typically occurs with the initial therapy of Nitroglycerine as a result of increased vasodilation?

Correct answer: C

Rationale: Headache is a common side effect associated with the initial therapy of Nitroglycerine due to its vasodilatory properties. The vasodilation caused by Nitroglycerine leads to relaxation of blood vessels, including those in the head, which can result in headaches. This side effect is considered normal and is often transient, diminishing with continued use of the medication.

4. Hydrochlorothiazide is classified as a

Correct answer: C

Rationale: Hydrochlorothiazide is classified as a diuretic. Diuretics are medications that help the body get rid of excess salt and water by increasing urine production, reducing fluid retention, and lowering blood pressure. Option A, Anti-inflammatory, is incorrect because hydrochlorothiazide does not primarily reduce inflammation. Option B, Antiarrhythmic, is incorrect because hydrochlorothiazide is not used to correct heart rhythm irregularities. Option D, Antifungal, is incorrect because hydrochlorothiazide is not used to treat fungal infections.

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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