what is the therapeutic use of phenytoin
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Nursing Elites

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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 is prescribed Propranolol for dysrhythmia. Which action should the nurse plan to take?

Correct answer: C

Rationale: The correct action the nurse should plan to take when administering Propranolol to a client with dysrhythmia is to assist the client when transitioning to a sitting or standing position. Propranolol can cause orthostatic hypotension, leading to dizziness during position changes, so it is essential to help the client move slowly to prevent falls or injuries. Choices A, B, and D are incorrect because holding Propranolol based on pulse rate, monitoring blood pressure after administration, and monitoring potassium levels are not directly related to the common side effect of orthostatic hypotension associated with Propranolol.

3. While caring for a client taking Propylthiouracil, for which of the following adverse effects should the nurse monitor?

Correct answer: A

Rationale: When a client is taking Propylthiouracil, the nurse should monitor for bradycardia as it is an adverse effect of this medication. Propylthiouracil can lead to a decrease in heart rate, which is known as bradycardia. Monitoring for this adverse effect is crucial to ensure the client's safety and well-being while on this medication. The other options, such as insomnia, heat intolerance, and weight loss, are not commonly associated adverse effects of Propylthiouracil. Therefore, they are incorrect choices for monitoring while the client is on this medication.

4. A client who is withdrawing from alcohol has been prescribed Propranolol. Which information should the nurse include in the teaching?

Correct answer: C

Rationale: The correct information the nurse should include in the teaching is that Propranolol decreases cravings for alcohol. Propranolol is used as an adjunct medication during alcohol withdrawal to help reduce the desire for alcohol. Choice A is incorrect as Propranolol does not increase the risk for seizure activity; it can actually be used to prevent alcohol withdrawal seizures. Choice B is also incorrect as Propranolol does not provide aversion therapy. Choice D is incorrect as Propranolol is not known to result in mild hypertension.

5. A healthcare provider is assessing a client who takes Desmopressin for Diabetes Insipidus. For which of the following adverse effects should the healthcare provider monitor?

Correct answer: D

Rationale: The correct answer is D: Headache. Headache during desmopressin therapy can indicate water intoxication, which is a potential adverse effect. Desmopressin is a medication used to treat Diabetes Insipidus by reducing excessive urination and thirst. Monitoring for headaches is crucial as it can signal decreased sodium levels due to water retention, leading to water intoxication, which is a serious concern. Hypovolemia, hypercalcemia, and agitation are not typically associated with desmopressin therapy for Diabetes Insipidus.

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