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?

A. Epinephrine is used in emergencies like anaphylaxis or cardiac arrest, not for reversing warfarin. B. Protamine is the antidote for heparin, not warfarin. C. Atropine is used to treat bradycardia, not anticoagulant overdose. D. Vitamin K is the antidote for warfarin toxicity. An INR of 5.2 indicates a high risk of bleeding, so vitamin K should be administered to reverse the effects of warfarin.