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 is receiving combination chemotherapy. Which of the following findings should the nurse identify as an indication of an oncologic emergency?

Correct answer: C

Rationale: A temperature of 38.1°C (100.6°F) can indicate an infection, which is considered an oncologic emergency in clients receiving chemotherapy due to the increased risk of sepsis in immunocompromised individuals. Dry oral mucous membranes (Choice A), nausea and vomiting (Choice B), and anorexia (Choice D) are common side effects of chemotherapy but do not typically indicate an oncologic emergency requiring immediate intervention.

3. A client has a new prescription for Metoclopramide to treat nausea. Which of the following client statements indicates an understanding of the teaching?

Correct answer: C

Rationale: The correct answer is C. Reporting restlessness or involuntary movements is crucial as they can be signs of extrapyramidal symptoms, a potential side effect of Metoclopramide. These symptoms should be reported promptly to the healthcare provider for appropriate management. Choices A, B, and D are incorrect because taking the medication before bedtime, discontinuing it due to drowsiness, or expecting urine color changes are not relevant teaching points for Metoclopramide use.

4. A client is starting therapy with Atenolol. Which of the following adverse effects should the nurse instruct the client to monitor?

Correct answer: C

Rationale: Atenolol is a beta-blocker that can cause bradycardia as an adverse effect due to its mechanism of action in slowing down the heart rate. The nurse should instruct the client to monitor their pulse regularly and report any significant decreases to prevent complications related to bradycardia.

5. A client has a new prescription for methotrexate to treat Rheumatoid Arthritis. The nurse should expect to monitor the client for which of the following adverse effects?

Correct answer: C

Rationale: The correct answer is bone marrow suppression. Methotrexate can lead to bone marrow suppression, resulting in anemia, leukopenia, and thrombocytopenia. Monitoring for signs of decreased blood cell counts is crucial to prevent complications. Insomnia (choice A), hypertension (choice B), and constipation (choice D) are not typically associated with methotrexate use for Rheumatoid Arthritis.

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