ATI RN Custom Exams Set 1 Related

Review ATI RN Custom Exams Set 1 related questions and content

Warfarin (Coumadin) is an anticoagulant and interferes with the action of:

  • A. Platelets
  • B. Vitamin K
  • C. Calcium
  • D. Vitamin B12
Correct Answer: B

Rationale: The correct answer is B: Vitamin K. Warfarin works by inhibiting the action of vitamin K, which is crucial for the synthesis of clotting factors in the blood. By interfering with vitamin K, warfarin decreases the production of these clotting factors, thereby prolonging the time it takes for blood to clot. This is why individuals on warfarin therapy need to monitor their vitamin K intake. Choices A, C, and D are incorrect because warfarin does not directly interfere with platelets, calcium, or vitamin B12.