A 69-year-old man on stable warfarin for AF develops a chest infection and is prescribed clarithromycin. Which is the best advice regarding his antico...

Question

A 69-year-old man on stable warfarin for AF develops a chest infection and is prescribed clarithromycin. Which is the best advice regarding his anticoagulation?

Accepted Answer

Arrange earlier INR check and monitor closely

Answer

Continue as usual; no interaction

Answer

Stop warfarin for 3 days

Answer

Increase warfarin dose by 20 percent

Answer

Switch to aspirin

prescribing safety assessment MCQ (SBA): Warfarin Safety

A 69-year-old man on stable warfarin for AF develops a chest infection and is prescribed clarithromycin. Which is the best advice regarding his anticoagulation?