A patient taking warfarin has an INR of 5. What is the MOST appropriate interpretation?

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Multiple Choice

A patient taking warfarin has an INR of 5. What is the MOST appropriate interpretation?

Explanation:
INR measures how long blood takes to clot in patients on warfarin, reflecting the level of anticoagulation. The therapeutic range for many conditions is about 2 to 3. An INR of 5 is well above that, meaning the blood is anticoagulated more than intended and the risk of bleeding increases. It does not mean the blood is thick; higher INR indicates thinner blood and a higher chance of bleeding, not clotting. So this value is too high, indicating increased risk of excessive anticoagulation.

INR measures how long blood takes to clot in patients on warfarin, reflecting the level of anticoagulation. The therapeutic range for many conditions is about 2 to 3. An INR of 5 is well above that, meaning the blood is anticoagulated more than intended and the risk of bleeding increases. It does not mean the blood is thick; higher INR indicates thinner blood and a higher chance of bleeding, not clotting. So this value is too high, indicating increased risk of excessive anticoagulation.

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