ATI N303 Pharmacology Exam | Nurselytic

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ATI N303 Pharmacology Exam Questions

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Question 1 of 5

A nurse is caring for a client who is on warfarin therapy for atrial fibrillation. The client's INR is 5.2. Which of the following medications should the nurse prepare to administer?

Correct Answer: D

Rationale: The correct answer is D: Vitamin K. Warfarin is an anticoagulant that works by inhibiting Vitamin K-dependent clotting factors. A high INR of 5.2 indicates the blood is too thin, putting the client at risk for bleeding. Administering Vitamin K helps reverse the effects of warfarin by promoting clot formation and lowering the INR.


Choice A: Epinephrine is not indicated for high INR and is used for severe allergic reactions or cardiac arrest.

Choice B: Atropine is used to treat bradycardia and has no relevance to high INR.

Choice C: Protamine is used to reverse the effects of heparin, not warfarin.
In summary, administration of Vitamin K is essential in this scenario to reverse the effects of warfarin and lower the INR to a safer range.

Question 2 of 5

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Question 3 of 5

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Question 4 of 5

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Question 5 of 5

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A nurse is caring for a client who is on warfarin therapy for atrial fibrillation. The client's INR is 5.2. Which of the following medications should the nurse prepare to administer?
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