a provider prescribes phenobarbital for a client who has a seizure disorder the medication has a long half life of 4 days how many times per day shoul
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Nursing Elites

ATI RN

ATI Pharmacology Proctored Exam

1. A provider prescribes phenobarbital for a client who has a seizure disorder. The medication has a long half-life of 4 days. How many times per day should the nurse expect to administer this medication?

Correct answer: A

Rationale: Phenobarbital has a long half-life of 4 days, meaning it remains at therapeutic levels in the body for an extended period. Due to this prolonged duration of action, the nurse should expect to administer phenobarbital once a day to maintain therapeutic levels and effectiveness. Administering it more than once a day would lead to unnecessary dosing and potential adverse effects as the medication remains active in the body for an extended period.

2. A client prescribed Warfarin is receiving discharge instructions from a nurse. Which of the following herbal supplements should the nurse instruct the client to avoid?

Correct answer: A

Rationale: St. John's wort can reduce the effectiveness of Warfarin by interacting with its metabolism pathways, potentially leading to decreased anticoagulant effects. Therefore, clients on Warfarin therapy should avoid St. John's wort. While echinacea, garlic, and ginseng are also herbal supplements that can interact with Warfarin, St. John's wort is particularly known for its significant impact on Warfarin metabolism. Echinacea may increase the risk of bleeding when taken with Warfarin, garlic may potentiate the anticoagulant effects of Warfarin, and ginseng may also increase the risk of bleeding. However, St. John's wort is the most crucial to avoid due to its significant impact on Warfarin metabolism.

3. A client has a prescription for a Nicotine transdermal patch. Which of the following instructions should the nurse include?

Correct answer: A

Rationale: The correct instruction for a client using a Nicotine transdermal patch is to apply the patch at the same time each day. This helps maintain consistent blood levels of nicotine throughout the treatment period, which can aid in reducing cravings for smoking. Consistency in the application time is essential for the effectiveness of the patch. Choices B, C, and D are incorrect. Removing the patch at bedtime may disrupt the continuous delivery of nicotine, applying the patch to the same location daily can cause skin irritation, and placing the patch over an area with hair may affect its adhesion and absorption.

4. The client makes which statement about lifestyle changes to reduce the development and progression of coronary artery disease that indicates the need for further teaching?

Correct answer: D

Rationale: The client stating, 'As long as I exercise, stress at my job will not bother me,' indicates a misunderstanding of the relationship between exercise and stress management. It is important to clarify that while exercise can help reduce stress, it may not eliminate all stressors, especially those related to work. Further teaching is needed to ensure the client understands the multifactorial approach required to address stress and its impact on coronary artery disease.

5. A client with heart failure is prescribed digoxin. Which of the following findings should the nurse identify as an adverse effect of digoxin?

Correct answer: B

Rationale: Blurred vision is a common adverse effect of digoxin and can indicate toxicity. Monitoring for visual changes is essential to prevent serious complications in clients taking digoxin.

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