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 preparing to administer a blood transfusion to a client. Which of the following actions should the nurse take?

Correct answer: B

Rationale: The correct answer is B: Start the transfusion with 0.9% sodium chloride. 0.9% sodium chloride is the only IV solution that is compatible with blood products and should be used to prime the tubing before a transfusion. Choice A is incorrect because vital signs should be monitored more frequently, typically every 15 minutes at the beginning of the transfusion. Choice C is incorrect as blood transfusions are usually administered over 2-4 hours, not 6 hours. Choice D is incorrect as the first 500 mL of blood should be infused slowly over 1-2 hours to monitor for any adverse reactions.

3. A patient refused a newly open fentanyl patch. Which of the following actions should the nurse take?

Correct answer: A

Rationale: The correct action for the nurse to take when a patient refuses a newly open fentanyl patch is to ask another nurse to witness the disposal of the new patch. This is essential for accountability and ensuring proper disposal procedures are followed. Choice B is incorrect because disposing of the patch in a sharps container without a witness does not ensure proper accountability. Choice C is incorrect as sending the patch back to the pharmacy is not the appropriate action for disposal. Choice D is incorrect because although documenting the refusal is important, it is also crucial to ensure proper disposal of the unused patch by having another nurse witness it.

4. What is the most important nursing action when a patient has a central line?

Correct answer: A

Rationale: The most important nursing action when a patient has a central line is to monitor for infection. Central line-associated bloodstream infections are a serious complication that can lead to severe outcomes. Monitoring for infection involves assessing the patient for signs and symptoms such as fever, chills, and hypotension. While monitoring the central line dressing, redness, and swelling are also important aspects of care, they are secondary to monitoring for infection as the primary focus should be on preventing serious complications.

5. A client who has a positive stool culture for Clostridium difficile should be placed in which type of room for infection control purposes?

Correct answer: B

Rationale: Placing the client in a private room is the appropriate infection control measure for C. difficile to prevent the spread of infection. While wearing a face shield may be necessary for procedures that generate splashes or sprays, it is not the primary precaution for C. difficile. Negative pressure rooms are typically used for airborne infections, not for C. difficile. Using an alcohol-based hand rub is important for hand hygiene but is not specific to managing C. difficile infection.

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