The Effectiveness of Patch-Based Screening for Pre-Symptomatic Atrial Fibrillation to Improve Patient Outcome

For participants randomized to be systematically screened, ambulatory ECG monitoring of up to 14 days will be performed using the Zio XT® Patch (iRhythm Inc, San Francisco, CA). The Zio XT® patch is a small, cutaneous ambulatory ECG recording device that provides cardiac rhythm monitoring for up to 14 consecutive days (significantly longer than the 48 hours of monitoring provided by a typical Holter Monitor). The device is approved by the Food and Drug Administration and is in routine clinical use, including in the VA system.