which lab value is critical for monitoring warfarin therapy
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Nursing Elites

ATI RN

ATI RN Comprehensive Exit Exam

1. Which lab value is critical for monitoring warfarin therapy?

Correct answer: A

Rationale: The correct answer is A: Monitor INR. INR (International Normalized Ratio) is crucial for monitoring warfarin therapy as it helps assess the therapeutic effectiveness and bleeding risks associated with the medication. INR measures the clotting tendency of blood, which is essential in determining the appropriate dosage of warfarin. Monitoring platelet count (B), sodium levels (C), or calcium levels (D) is not primarily used for assessing warfarin therapy. Platelet count is more relevant in assessing bleeding disorders, while sodium and calcium levels are typically monitored for different medical conditions unrelated to warfarin therapy.

2. A nurse is caring for a client who has a new prescription for nitroglycerin transdermal patches. Which of the following instructions should the nurse include?

Correct answer: C

Rationale: The correct answer is to apply the nitroglycerin transdermal patch in the morning and remove it at bedtime. This schedule helps prevent tolerance to the medication. Choice A is incorrect because the patch should be rotated to different sites to prevent skin irritation. Choice B is incorrect as daily rotation is recommended, not daily application to the same site. Choice D is incorrect as the patch should be removed during a bath as it may decrease the efficacy of the medication.

3. A client who has a new prescription for lithium is receiving discharge teaching from a nurse. Which of the following client statements indicates an understanding of the teaching?

Correct answer: A

Rationale: The correct answer is A. Clients prescribed lithium need regular monitoring of blood levels to ensure the medication's effectiveness and safety. This monitoring helps to keep the medication within the therapeutic range and prevent toxicity. Choice B is incorrect because lithium is usually taken with food to minimize gastrointestinal side effects. Choice C is not directly related to lithium therapy; however, excessive sodium intake can affect lithium levels. Choice D is incorrect as abruptly stopping lithium can lead to adverse effects and should only be done under healthcare provider guidance.

4. A nurse is caring for a client who has heart failure and is receiving furosemide. Which of the following findings should the nurse identify as a therapeutic effect of the medication?

Correct answer: C

Rationale: The correct answer is C: Clear lung sounds. Clear lung sounds indicate a therapeutic effect of furosemide, as the medication helps reduce fluid overload in heart failure. Choice A, increased shortness of breath, is incorrect as furosemide is used to relieve symptoms like shortness of breath. Choice B, weight gain of 2.3 kg (5 lb), is incorrect as furosemide is a diuretic that helps reduce fluid retention leading to weight loss. Choice D, bounding pulse, is incorrect as furosemide does not directly impact the pulse rate.

5. A nurse is reviewing the medical record of a client who has major depressive disorder and is taking tranylcypromine. Which of the following foods should the nurse instruct the client to avoid?

Correct answer: D

Rationale: The correct answer is D: Cured meats. Cured meats contain tyramine, which can lead to a hypertensive crisis in clients taking tranylcypromine. Bananas, milk, and yogurt do not contain significant amounts of tyramine and are safe for clients taking this medication. Therefore, the nurse should instruct the client to avoid cured meats to prevent adverse effects.

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