AP19-01199 Abstract View

Introduction : Left atrial (LA) area with reduced bipolar voltage identified during sinus rhythm (low voltage zone = LVZ) has been used as a surrogate for atrial fibrosis. LVZ is frequently localized in a specific region such as anterior wall. These localized LVZs have been shown to be a possible ablation target for substrate modification. The purpose of this study is to evaluate the relationship between local slow conduction zone (SCZ) and bipolar voltage using a newly released HD Grid mapping catheter (Abbott, USA).