Abstract
Warfarin has been the effective treatment in the prophylaxis of cardioembolism, in particular in patients with atrial fibrillation, for more than 50 years. Nevertheless, many patients with atrial fibrillation are not currently treated because of the numerous limits of oral anticoagulation and in those treated the quality of anticoagulation is often poor. Novel oral anticoagulant drugs, the direct thrombin antagonist dabigatran and factor Xa inhibitors such as rivaroxaban, apixaban, edoxaban, and betrixaban are more predictable and convenient anticoagulants in comparison with warfarin, mainly because of the non-requirement of regular laboratory monitoring and dose adjustments. Current data from phase III clinical trials are available for dabigatran, rivaroxaban and apixaban, which show to be at least noninferior in efficacy to warfarin for the prevention of stroke in patients with atrial fibrillation. This review focuses on the potential of novel anticoagulants to replace warfarin in patients with atrial fibrillation. Also the place in therapy and the potential limitations of the new agents in clinical practice represent important issues to be considered. The promise of new oral anticoagulants gives us the hope that warfarin will finally be replaced in a near future, but more importantly that anticoagulant undertreatment of atrial fibrillation will be partially overcome.
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