22nd February 2024

A 75 year old male regularly attends the Warfarin Clinic to check his INR levels after starting Warfarin for the management of Atrial Fibrillation several years previously.

A 75 year old male regularly attends the Warfarin Clinic to check his INR levels after starting Warfarin for the management of Atrial Fibrillation several years previously. He usually takes 3mg Warfarin once daily with a target INR of 2-3. A blood test reveals his INR to be 5. He feels well otherwise and reports no abnormal bleeding.

Select the most appropriate option with regard to this patient’s management.