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 new prescription for Nevirapine, an NNRTI. Which of the following statements should the nurse include in discharge teaching?

Correct answer: B

Rationale: The correct statement to include in discharge teaching about Nevirapine, an NNRTI, is to advise the client to avoid alcohol while taking this medication. Alcohol can interact with Nevirapine and lead to potential adverse effects or decreased effectiveness. Choice A is incorrect because Nevirapine should be taken without food or on an empty stomach for optimal absorption. Choice C is a general recommendation for most medications but not specifically for Nevirapine. Choice D is incorrect as Nevirapine should not be taken on an empty stomach.

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

Correct answer: B

Rationale: Allopurinol can cause kidney stones due to the formation of uric acid crystals, so it is crucial for the client to increase their fluid intake. Adequate hydration helps to prevent the formation of kidney stones by diluting the urine and promoting the excretion of uric acid. Therefore, advising the client to increase their fluid intake is essential in preventing this adverse effect while taking Allopurinol.

4. When administering a Serotonin Antagonist, what is important to monitor for?

Correct answer: B

Rationale: When administering a Serotonin Antagonist, monitoring mental status changes is crucial. Serotonin Antagonists can affect neurological function, potentially leading to alterations in mental status. It is essential to assess for any changes in behavior, mood, or cognition to ensure patient safety and prompt intervention if needed.

5. A client has a prescription for gentamicin for the treatment of an infection. Which finding indicates a potential adverse reaction to the medication?

Correct answer: B

Rationale: The presence of red blood cells in the urine can indicate nephrotoxicity, which is a potential adverse effect of gentamicin. Gentamicin can cause damage to the kidneys, leading to the presence of red blood cells in the urine as a sign of renal impairment. Monitoring for this finding is crucial to detect and manage adverse reactions promptly. High blood pressure (Choice A) is not typically associated with gentamicin use. Low urine output (Choice C) is more suggestive of kidney injury rather than nephrotoxicity specifically related to gentamicin. Respiratory rate (Choice D) is not a common indicator of adverse reactions to gentamicin.

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