Atrial fibrillation (AF) is a major cause of stroke and thromboembolism, resulting in
substantial morbidity and mortality. For the majority of patients with AF, aspirin has a limited …

Background and Purpose—Nonvalvular atrial fibrillation (AF) is a strong, independent risk
factor for stroke, but the absolute rate of stroke varies widely among AF patients, importantly …

Atrial fibrillation (AF) is associated with a fivefold increased risk for stroke due to
thromboembolic events. Warfarin remains the standard medical therapy for decades in these …

The morbidity and mortality associated with atrial fibrillation (AF) are related mainly to
ischaemic stroke, and the prevention of thrombo-embolism is an important component of the …

Atrial fibrillation (AF) is common, and it increases the risk of stroke. Placebo-controlled trials
consistently showed that warfarin reduces the risk of stroke by two thirds, and a meta …

BACKGROUNDAtrial fibrillation in the absence of rheumatic valvular disease is associated
with a fivefold to sevenfold increased risk of ischemic stroke. METHODS AND MAIN …

Abstract Background: Oral anticoagulation (OAC), rather than aspirin, is recommended in
patients with atrial fibrillation (AF) at moderate to high risk of stroke. Objectives: This study …

Aspirin reduces the risk of stroke in patients with nonrheumatic atrial fibrillation, but its
efficacy may not be uniform in patient subgroups. We sought patient characteristics …

Background—The rate of stroke in atrial fibrillation (AF) depends on the presence of
comorbid conditions and the use of antithrombotic therapy. Although adjusted-dose warfarin …

Although atrial fibrillation (AF) is associated with ischemic stroke, some AF patients have an
inherently low rate of thromboembolism. Additional AF patients might have a low …