what is the therapeutic action of phenytoin
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Nursing Elites

ATI RN

ATI Pharmacology Proctored Exam 2024

1. What is the therapeutic action of Phenytoin?

Correct answer: B

Rationale: Phenytoin is primarily used as an anticonvulsant to prevent and control seizures. It works by stabilizing electrical activity in the brain, making it effective in managing conditions like epilepsy. Antidiabetic medications are used to regulate blood sugar levels, mood stabilizers help manage mood disorders, and antianxiety agents are used to reduce anxiety symptoms, none of which are the primary therapeutic action of Phenytoin.

2. A client has a new prescription for a Nitroglycerin transdermal patch. Which of the following instructions should the nurse include?

Correct answer: B

Rationale: The correct instruction for a Nitroglycerin transdermal patch is to remove it each day, usually at bedtime, to prevent tolerance. Keeping the patch on for 24 hours at a time can lead to tolerance development. Applying the patch to a different site each day is not necessary, as long as the area is rotated to prevent skin irritation. Applying the patch over an area with little or no hair is not a critical instruction for the Nitroglycerin patch.

3. A client has a new prescription for Lisinopril. Which of the following laboratory values should be monitored?

Correct answer: A

Rationale: Corrected Rationale: Lisinopril is an ACE inhibitor that can cause hyperkalemia by reducing potassium excretion through the kidneys. Monitoring serum potassium levels is crucial to detect hyperkalemia early and prevent adverse effects such as cardiac arrhythmias. Choices B, C, and D are incorrect because Lisinopril is not known to significantly impact sodium, calcium, or magnesium levels in the same way it affects potassium levels.

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

Correct answer: A

Rationale: The correct instruction for a client prescribed Nitrofurantoin is to take the medication with food. Taking Nitrofurantoin with food helps enhance absorption and reduces the risk of gastrointestinal side effects. It is important for the nurse to emphasize this instruction to ensure the client benefits optimally from the medication. Choices B, C, and D are incorrect. Avoiding dairy products is not specifically required with Nitrofurantoin. Taking the medication at bedtime is not a standard instruction. Increasing vitamin intake is not necessary in relation to Nitrofurantoin therapy.

5. A healthcare provider is preparing to administer Belimumab to a client with Systemic Lupus Erythematosus. Which of the following actions should the healthcare provider plan to take?

Correct answer: D

Rationale: Correct Answer: Monitoring the client for hypersensitivity reactions is crucial when administering Belimumab due to its known potential for severe infusion reactions and anaphylaxis. The healthcare provider should closely observe the client during the administration to promptly identify and manage any hypersensitivity reactions that may occur. Choice A is incorrect because warming Belimumab is not necessary before administration. Choice B is incorrect as Belimumab should not be administered as an IV bolus over 5 minutes; it should be given as an IV infusion over a longer duration. Choice C is incorrect as Belimumab should not be diluted in a 5% dextrose and water solution.

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