Abstract WP199: Left Atrial Volume Index and PR Interval Are Independent Predictors of Atrial Fibrillation in Embolic Stroke Patients With Insertable Cardiac Monitor

Introduction: The use of insertable cardiac monitors (ICM) improved the detection rate of atrial fibrillation (AF) in patients with embolic strokes (ES). However, given cost of the device, current indications and availability of implant procedure, the optimal patient population that would benefit from the device remains unknown. Objectives: We sought to determine 1) the incidence of AF in patients with ES in our population and 2) whether certain variables are predictive of AF in patients with ES. Methods: A case control study was conducted from January 1, 2015 to June 23, 2017. Patients admitted to the Gates Vascular Institute with ES on MRI and CT angiogram but no evidence of AF on telemetry underwent Reveal LINQ ICM implant prior to discharge. Demographics, EKG and echocardiographic variables were assessed. Statistical analysis was conducted using SPSS version 22 and R v.1.0.44. Independent T tests were applied for continuous variables and Chi Square or Fisher’s exact test for categorical variables. Cox...