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Although cardiac monitoring is recommended in the workup for cryptogenic stroke, the optimal duration of monitoring to detect paroxysmal atrial fibrillation (AF) is uncertain. The longer periods of monitoring possible with implantable devices increase the yield for paroxysmal atrial fibrillation, but gaps in our understanding of the precise benefit for prevent recurrent stroke remain. In this partially industry-funded study, investigators studied 496 consecutive patients with cryptogenic stroke or transient ischemic attack (TIA) admitted to a comprehensive stroke center over an 8-year period.
From 2013 to 2017, all patients with cryptogenic stroke or TIA had at least one 24-hour Holter-ECG monitor as an inpatient; some had additional 24-hour…