ResultsĪF was identified in 43 of 119 patients (36%). An ambulatory external loop recorder was scheduled in patients without evidence of AF on Holter, followed by ambulatory internal loop recorder implantation in cases without evidence of AF at this point. A 24-h Holter was performed in all patients. MethodsĪ total of 119 patients were enrolled. We aimed to determine the diagnostic yield of a sequential monitoring approach using external and internal loop recorders for detecting AF in patients with cryptogenic stroke after a complete diagnostic evaluation. Guidelines recommend monitoring in this setting, although the optimum duration and method remains unknown. Paroxysmal and asymptomatic episodes of atrial fibrillation (AF) can be the cause of previously diagnosed cryptogenic stroke.
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