ATI RN
ATI Pharmacology Quiz 25E Questions
Extract:
Question 1 of 5
Unlike heparin, the anticoagulant activity of warfarin can take several minutesdaysweekshours to reach its maximum effect.
Correct Answer: B
Rationale: The correct answer is B: days. Warfarin is a vitamin K antagonist that works by inhibiting the synthesis of clotting factors in the liver. It takes days for warfarin to reach its maximum effect because it requires the depletion of existing clotting factors and the synthesis of new, unaffected clotting factors. This process of depleting and replacing clotting factors takes time, typically a few days, before warfarin reaches its full anticoagulant activity.
Choices A, C, and D are incorrect because they do not accurately reflect the time frame required for warfarin to achieve its maximum effect.
Question 2 of 5
Correct Answer:
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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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