Abstract
Progress in the prevention of stroke in patients with atrial fibrillation (AF) dominated advances in the area of cerebrovascular disorders in 2009. The most significant advance was the RE-LY (Randomized Evaluation of Long-Term Anticoagulation Therapy) study,1 which compared warfarin with a new oral antithrombin, dabigatran, in patients with AF. Vitamin K antagonists, such as warfarin, are the most effective drugs available for protection against stroke in patients with AF who are at increased stroke risk.
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