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 a Nitroglycerin transdermal patch. Which of the following instructions should be included by the healthcare provider?

Correct answer: D

Rationale: The correct instruction for a Nitroglycerin transdermal patch is to place it over a hairless area of the body. This is essential to ensure proper adhesion and consistent absorption of the medication. Hair can impede the patch's ability to stick to the skin and deliver the medication effectively. Therefore, choices A, B, and C are incorrect. Applying the patch to the same site every day (Choice A) may lead to skin irritation, removing the patch every 12 hours (Choice B) is not typically recommended for Nitroglycerin patches, and massaging the patch after applying it (Choice C) could alter its integrity and affect drug delivery.

3. When providing teaching to a client starting therapy with trastuzumab, which finding should the nurse instruct the client to report?

Correct answer: A

Rationale: The correct answer is A: Dyspnea. The nurse should instruct the client to report dyspnea because it can indicate pulmonary toxicity, a serious adverse effect of trastuzumab. Monitoring and early reporting of respiratory symptoms like dyspnea are essential to prevent further complications and ensure timely intervention. Choices B, C, and D are incorrect because constipation, tinnitus, and dry mouth are not typically associated with trastuzumab therapy and are not priority symptoms that require immediate reporting for this specific medication.

4. A nurse is providing teaching to a client who has asthma and is beginning to take montelukast. Which of the following statements by the client indicates an understanding of the teaching?

Correct answer: B

Rationale: Montelukast is typically taken once daily in the evening for long-term control of asthma symptoms. It helps prevent asthma attacks by reducing inflammation in the airways. While montelukast can also be used for exercise-induced bronchospasm in some cases, it is generally not a rescue medication and should be taken regularly, not on an as-needed basis.

5. When a client is starting long-term oral prednisone for chronic asthma, what adverse effect should the nurse instruct the client to monitor for?

Correct answer: A

Rationale: Weight gain is a common adverse effect of oral prednisone due to sodium and water retention, which can lead to fluid retention. Monitoring weight changes is important as it helps in early identification of this adverse effect, enabling timely interventions to manage it. Choice B, nervousness, is not typically associated with oral prednisone use. Bradycardia (Choice C) is unlikely as prednisone usually causes tachycardia or increased heart rate. Constipation (Choice D) is not a common adverse effect of prednisone compared to weight gain.

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