Abstract
Four direct oral anticoagulants (DOACs) are available for the prevention of stroke in nonvalvular atrial fibrillation (NVAF): dabigatran (a direct thrombin inhibitor); and rivaroxaban, apixaban, and edoxaban (factor Xa inhibitors). This article summarizes the safety and efficacy of DOACs for the prevention of stroke in elderly NVAF patients. PubMed was searched to identify published results of randomized, controlled trials evaluating DOACs for stroke prevention in elderly NVAF patients. Pharmacologic and dose recommendations were obtained from the package inserts. DOACs are at least as effective as warfarin for stroke prevention in elderly patients with NVAF. Compared with warfarin, DOACs were associated with reduced risk of intracranial hemorrhage, while some DOACs demonstrated an increase in other bleeding events (e.g., gastrointestinal). The faster onset and offset of action and fewer food and drug interactions of DOACs may be an advantage over warfarin for some patients. DOACs are an alternative to warfarin with overall equivalent safety and efficacy in elderly patients with NVAF, and may be preferable for some. Stroke risk must always be balanced against potential bleeding risk when determining an optimal anticoagulation treatment plan. Patients' needs and preferences will also impact this decision.
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