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Benz, Alexander P; Hohnloser, Stefan H; Eikelboom, John W; Carnicelli, Anthony P; Giugliano, Robert P; Granger, Christopher B; Harrington, Josephine; Hijazi, Ziad; Morrow, David A; Patel, Manesh R; Seiffge, David J; Shoamanesh, Ashkan; Wallentin, Lars; Yi, Qilong; Connolly, Stuart J
European heart journal, 05/2023, Volume: 44, Issue: 20Journal Article
Abstract Aims The prognosis of patients with atrial fibrillation (AF) and ischemic stroke while taking oral anticoagulation is poorly understood. This study aimed to characterize the outcomes of patients following a stroke event while on oral anticoagulation. Methods and results Individual participant data from five pivotal randomized trials of antithrombotic therapy in AF were used to assess the outcomes of patients with a post-randomization ischemic stroke while on study medication (warfarin, standard-, or lower-dose direct oral anticoagulant regimen) during trial follow-up. The primary outcome was recurrent ischemic stroke after the first post-randomization ischemic stroke. The primary analysis included 1163 patients with a first post-randomization ischemic stroke while on study medication (median age 73 years, 39.3% female, 35.4% history of stroke before trial enrollment). During a median continued follow-up of 337 days, 74 patients had a recurrent ischemic stroke cumulative incidence at 1 year: 7.0%, 95% confidence interval (CI) 5.2%–8.7%. The cumulative incidence of mortality at 3 months after stroke was 12.4% (95% CI 10.5%–14.4%). Consistent results for the incidence of recurrent ischemic stroke at 1 year were obtained in an analysis accounting for the competing risk of death (6.2%, 95% CI 4.8%–7.9%) and in a landmark analysis excluding the first 2 weeks after the index stroke and only including patients without permanent study drug discontinuation since then (6.8%, 95% CI 4.6%–8.9%). Conclusion Patients with AF and ischemic stroke while on oral anticoagulation are at increased risk of recurrent ischemic stroke and death. These patients currently have an unmet medical need. Structured Graphical Abstract Structured Graphical Abstract Outcomes of patients with atrial fibrillation and ischemic stroke while on oral anticoagulation. Abbreviations: ARISTOTLE, Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation, AVERROES, Apixaban Versus Acetylsalicylic Acid (ASA) to Prevent Stroke in Atrial Fibrillation Patients Who Have Failed or Are Unsuitable for Vitamin K Antagonist Treatment, CI, confidence interval, COMBINE AF, A Collaboration Between Multiple Institutions to Better Investigate Non-Vitamin K Antagonist Oral Anticoagulant Use in Atrial Fibrillation, DOAC, direct oral anticoagulant, ENGAGE AF-TIMI 48, Effective Anticoagulation with Factor Xa Next Generation in Atrial Fibrillation-Thrombolysis in Myocardial Infarction 48, RE-LY, Randomized Evaluation of Long-Term Anticoagulation Therapy, ROCKET AF, Rivaroxaban Once Daily Oral Direct Factor Xa Inhibition Compared with Vitamin K Antagonism for Prevention of Stroke and Embolism Trial in Atrial Fibrillation.
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