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 assessing a client who has Guillain-Barré syndrome. Which of the following findings should the nurse expect?

Correct answer: D

Rationale: Facial weakness is a common finding in clients with Guillain-Barré syndrome due to muscle weakness. While increased urine output is not typically associated with Guillain-Barré syndrome, hyperactive reflexes are more indicative of conditions like hyperthyroidism or spinal cord injury. Hypoactive bowel sounds are not a classic finding in Guillain-Barré syndrome, making it an incorrect choice.

3. A nurse is caring for a client who has heart failure and a prescription for digoxin. Which of the following findings should the nurse identify as a manifestation of digoxin toxicity?

Correct answer: C

Rationale: Visual disturbances, such as blurred or yellow vision, are common signs of digoxin toxicity. While constipation (Choice A) is not typically associated with digoxin toxicity, tachycardia (Choice B) and hypertension (Choice D) are not characteristic manifestations of digoxin toxicity. Therefore, the correct answer is visual disturbances (Choice C).

4. A client has a new prescription for nitroglycerin sublingual tablets. Which of the following instructions should the nurse include?

Correct answer: A

Rationale: The correct answer is A: 'Take a tablet every 5 minutes for pain relief, up to three doses.' Nitroglycerin sublingual tablets are used to relieve chest pain or to prevent chest pain before activities known to cause angina. The tablets should be taken every 5 minutes for pain relief, up to three doses, as prescribed. Choice B is incorrect because nitroglycerin sublingual tablets should be placed under the tongue until they dissolve, not taken with water. Choice C is incorrect because nitroglycerin sublingual tablets should not be chewed but placed under the tongue for absorption. Choice D is incorrect because nitroglycerin tablets should be stored in their original container at room temperature away from light and moisture.

5. What is the priority nursing action for a patient with shortness of breath?

Correct answer: A

Rationale: Administering oxygen is the priority nursing action for a patient experiencing shortness of breath. Oxygen therapy aims to improve oxygenation levels quickly, addressing the underlying cause of the symptom. Repositioning the patient, checking oxygen saturation, and elevating the head of the bed are important interventions but administering oxygen takes precedence in this scenario to ensure adequate oxygen supply to the body.

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