Question

A 72-year-old woman with known atrial fibrillation, hypertension and diabetes is on warfarin for stroke prevention. Her INR has been highly variable despite good adherence. She has normal renal function. According to CCS AF guidelines, what is the best next step?

Accepted Answer

Switch to a DOAC at standard stroke-prevention dose.

Answer

Continue warfarin and increase monitoring frequency.

Answer

Switch to acetylsalicylic acid alone for stroke prevention.

Answer

Stop anticoagulation because she is over 70 years old and at high bleeding risk.

Answer

Use dual antiplatelet therapy instead of anticoagulation.

Practice question

A 72-year-old woman with known atrial fibrillation, hypertension and diabetes is on warfarin for stroke prevention. Her INR has been highly variable despite good adherence. She has normal renal function. According to CCS AF guidelines, what is the best next step?