ATI RN
ATI N211 Pharmacology Exam I Questions
Extract:
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: B
Rationale: The correct answer is B: Vitamin K. Warfarin is an anticoagulant that works by inhibiting Vitamin K-dependent clotting factors. When a patient's INR is high (like in this case with an INR of 5.2), it indicates that the blood is too thin and there is an increased risk of bleeding. Administering Vitamin K helps to reverse the effects of warfarin by replenishing Vitamin K levels and promoting the clotting process to bring the INR back to the therapeutic range.
Atropine (
A) is a medication used to treat bradycardia, not related to warfarin therapy. Epinephrine (
C) is a medication used for severe allergic reactions or cardiac arrest, not related to warfarin therapy. Protamine (
D) is used to reverse the effects of heparin, not warfarin.
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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