Abstract
Few data exist on the long-term outcomes of patients with spontaneous echo contrast (SEC), left atrial/left atrial appendage (LA/LAA) thrombus, and complex aortic plaque (CAP), in patients with atrial fibrillation receiving oral anticoagulation. We explored the relationship between these 3 echocardiographic findings and clinical outcomes, and the comparative efficacy and safety of apixaban and warfarin for each finding. Patients from the ARISTOTLE trial (Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation) with SEC, LA/LAA thrombus, or CAP diagnosed by either transthoracic or transesophageal echocardiography were compared with patients with none of these findings on transesophageal echocardiography. A total of 1251 patients were included: 217 had SEC, 127 had LA/LAA thrombus, 241 had CAP, and 746 had none. The rates of stroke/systemic embolism were not significantly different among patients with and without these echocardiographic findings (hazard ratio, 0.96; 95% confidence interval, 0.25-3.60 for SEC; hazard ratio, 1.27; 95% confidence interval, 0.23-6.86 for LA/LAA thrombus; hazard ratio, 2.21; 95% confidence interval, 0.71-6.85 for CAP). Rates of ischemic stroke, myocardial infarction, ca...Continue Reading
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