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. During the repair of a skin laceration, a client receives a local anesthetic of Lidocaine. For which of the following adverse reactions should the nurse monitor the client?

Correct answer: A

Rationale: Seizures are a potential adverse reaction following the administration of local anesthetics like Lidocaine. This adverse effect is important to monitor as it can be life-threatening and requires immediate intervention. It is crucial for the nurse to be vigilant in recognizing any signs of seizure activity to ensure the client's safety and well-being.

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

Correct answer: B

Rationale: The correct answer is B. Loperamide can cause drowsiness and dizziness, so clients should avoid activities that require alertness until they know how the medication affects them. Taking the medication with a full glass of water can help with absorption. Increasing intake of high-fiber foods is not directly related to Loperamide. Black, tarry stools are not expected side effects of this medication, so informing the client to expect this is incorrect.

4. A client has anemia and a new prescription for ferrous sulfate liquid. Which of the following instructions should the nurse provide?

Correct answer: B

Rationale: Taking ferrous sulfate with orange juice can help increase the absorption of iron. Orange juice contains vitamin C, which aids in the absorption of iron from the medication. This combination can enhance the effectiveness of the iron supplement for a client with anemia. Option A is incorrect because taking iron on an empty stomach can cause gastrointestinal upset. Option C is incorrect because calcium in milk can inhibit iron absorption. Option D is irrelevant to enhancing iron absorption.

5. A healthcare provider is educating a client who has a new prescription for Simvastatin. Which of the following instructions should the healthcare provider include?

Correct answer: B

Rationale: The correct instruction that the healthcare provider should include is to 'Avoid drinking grapefruit juice.' Grapefruit juice can increase the blood levels of Simvastatin, leading to potential side effects like muscle pain and liver damage. Instructing the client to avoid grapefruit juice helps prevent these adverse effects and ensures the medication's efficacy. Choices A, C, and D are incorrect because taking Simvastatin with food, at a specific time, or increasing potassium-rich foods intake are not essential instructions for this medication.

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