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 child with Cystic Fibrosis has a new prescription for Acetylcysteine. Which of the following information should the nurse include in the instructions?

Correct answer: B

Rationale: The correct answer is B: 'Expect this medication to smell like rotten eggs.' Acetylcysteine contains sulfur, which gives it a characteristic rotten-egg odor. This smell is normal and expected when using this medication. Choices A, C, and D are incorrect. Acetylcysteine is not used to suppress cough, cause euphoria, or turn urine orange.

3. A client is receiving discharge instructions for a new prescription of Enoxaparin. Which of the following instructions should the provider include?

Correct answer: D

Rationale: The correct answer is to administer the medication in the abdomen. Enoxaparin is administered as a subcutaneous injection in the abdomen to prevent bleeding complications. Injecting into the muscle or massaging the site can increase the risk of bleeding. Rotating sites between the arms and thighs is not recommended for Enoxaparin administration due to variations in absorption rates. Therefore, the provider should instruct the client to administer Enoxaparin in the abdomen for optimal effectiveness and safety.

4. Which statement is true about food and drug precautions?

Correct answer: B

Rationale: The correct answer is B. Certain combinations of food and drugs can indeed lead to adverse reactions. It is important to be cautious with the simultaneous intake of food and drugs as interactions between them can affect their efficacy and safety. Choices A, C, and D are incorrect because they do not accurately reflect the potential risks associated with the combination of food and drugs.

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

Correct answer: C

Rationale: The correct instruction for a client prescribed Ranitidine is to take the medication at bedtime. Ranitidine is best taken at night to reduce nighttime stomach acid production, providing optimal relief for conditions like gastroesophageal reflux disease (GERD) and ulcers.

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