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. When caring for a school-age child with a new prescription for Atomoxetine, the nurse should monitor the client for which of the following adverse effects of this medication?

Correct answer: B

Rationale: The correct answer is B: Liver damage. Atomoxetine can lead to liver damage as an adverse effect. Symptoms of liver damage include jaundice, upper abdominal tenderness, dark urine, and elevated liver enzymes. Monitoring for these signs is crucial when a child is on this medication. Choices A, C, and D are incorrect because Atomoxetine is not known to cause kidney toxicity, seizure activity, or adrenal insufficiency as primary adverse effects.

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

Correct answer: B

Rationale: The correct instruction for a client taking Acyclovir is to increase fluid intake during therapy. Acyclovir can cause nephrotoxicity, potentially leading to kidney damage. Increasing fluid intake helps prevent this adverse effect by promoting adequate renal function and drug elimination. Choices A, C, and D are incorrect. Acyclovir is usually prescribed for short-term use, there is no need to avoid sexual contact while on the medication, and nausea is not a common side effect that necessitates immediate consultation with a healthcare provider.

4. A client has a new prescription for Ranitidine to treat peptic ulcer disease. Which of the following instructions should the nurse include?

Correct answer: B

Rationale: The correct instruction that the nurse should include for a client prescribed Ranitidine to treat peptic ulcer disease is to avoid smoking while taking the medication. Smoking can interfere with the effectiveness of ranitidine and worsen ulcer symptoms. Therefore, it is crucial for clients to abstain from smoking to ensure optimal therapeutic outcomes. Choices A, C, and D are incorrect. Taking Ranitidine with or without food does not significantly affect its effectiveness, there is no specific need to increase intake of dairy products, and expecting a yellow tinge to the skin is not a common side effect associated with Ranitidine.

5. When administering an Antiulcer Agent, you should be more cautious when administering it to:

Correct answer: D

Rationale: When administering an antiulcer agent, caution is warranted in patients with renal failure due to the potential impact on drug metabolism and excretion. Additionally, elderly patients may be more susceptible to adverse effects from antiulcer agents due to age-related physiological changes. Therefore, it is important to be more cautious when administering antiulcer agents to patients with renal failure and elderly patients. Choice A, a healthy 27-year-old patient, would typically not require as much caution compared to patients with renal failure or elderly patients when administering antiulcer agents. Therefore, choices B & C are the correct options for increased caution.

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