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 Captopril. Which of the following instructions should the nurse include?

Correct answer: C

Rationale: Clients prescribed with Captopril, an ACE inhibitor, are at risk of developing a persistent cough as a common adverse effect. It is essential for the client to inform their healthcare provider promptly if this side effect occurs to evaluate the need for a medication change or adjustment.

3. A healthcare provider plans to administer Morphine IV to a postoperative client. Which of the following actions should the provider take?

Correct answer: C

Rationale: The correct action for the provider is to withhold morphine if the client's respiratory rate is 12/min or less. Respiratory depression is a serious side effect of morphine and other opioids. Withholding the medication and informing the healthcare provider is essential to prevent further respiratory compromise in the client. Choices A, B, and D are incorrect because monitoring for seizures and confusion, protecting the client's skin from severe diarrhea, and administering morphine via IV bolus over 30 seconds or less are not the primary actions to ensure client safety when administering morphine IV. Respiratory status is crucial due to the risk of respiratory depression associated with opioid administration.

4. A client has a new prescription for Furosemide. Which of the following instructions should be included?

Correct answer: C

Rationale: Furosemide is a diuretic that can lead to orthostatic hypotension, causing dizziness and falls. Instructing the client to change positions slowly helps prevent these adverse effects by allowing the body to adjust to postural changes gradually, reducing the risk of significant blood pressure drops upon standing up quickly.

5. A client is receiving discharge instructions for a new prescription of Prednisone. Which of the following dietary instructions should be included?

Correct answer: A

Rationale: When a client is prescribed Prednisone, there is a risk of potassium depletion due to the medication. Therefore, it is essential to increase the intake of potassium-rich foods such as bananas, oranges, and spinach to help maintain adequate potassium levels in the body and prevent complications associated with low potassium levels. Choice B and D are incorrect as there is no specific need to increase dairy products or decrease protein intake with Prednisone. Choice C is also incorrect as avoiding foods high in vitamin K is more relevant for clients taking anticoagulants like warfarin.

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