Question

A 30-year-old woman on warfarin therapy for a mechanical heart valve is found to have an INR of 1.5, below the therapeutic range of 2.5-3.5. She has no bleeding. According to the BNF, how should her warfarin dose be adjusted?

Accepted Answer

Increase the dose to achieve target INR

Answer

Continue the same dose

Answer

Stop warfarin for 2 days

Answer

Give intravenous vitamin K

Answer

Switch to low molecular weight heparin

Practice question

A 30-year-old woman on warfarin therapy for a mechanical heart valve is found to have an INR of 1.5, below the therapeutic range of 2.5-3.5. She has no bleeding. According to the BNF, how should her warfarin dose be adjusted?