Stroke prevention by aspirin or warfarin for atrial fibrillation

James M. Kitchens, MD Toronto General Hospital Toronto, Ontario

Either warfarin or aspirin reduces the risk of ischemic stroke and systemic embolism in patients with nonrheumatic atrial fibrillation.

Randomized Controlled Trial
2 effects
1.3 years
1330 subjects

Reported Outcomes


Aspirin Manufactured risk & protective factor
Minor Protective Factor Aspirin

Stroke Brain outcome
Minor decreased risk of Stroke
Brain system

High evidence

Aspirin Manufactured risk & protective factor
Protective Factor Aspirin

Mortality Musculoskeletal outcome
Decreased risk of Mortality
Musculoskeletal system

High evidence