Question

A patient with mechanical aortic valve replacement is found to have an INR of 1.8, below the therapeutic target. He has no symptoms. What is the best immediate step in his anticoagulation management?

Accepted Answer

Discuss bridging therapy with low molecular weight heparin

Answer

Stop warfarin until INR normalises

Answer

Double the warfarin dose and recheck in 1 week

Answer

Administer vitamin K intravenously

Answer

Continue warfarin at current dose

Practice question

A patient with mechanical aortic valve replacement is found to have an INR of 1.8, below the therapeutic target. He has no symptoms. What is the best immediate step in his anticoagulation management?