2 A multi-centre study into the use of Ripple Mapping to differentiate atrial scar from conducting tissue during tachycardia ablation

Background: Atrial tachycardias (AT) that occur following previous ablation arise secondary to iatrogenic scar predisposing to reentry. There exists no bipolar voltage threshold that defines scar with 3D mapping. Ripple Mapping (RM), developed in our institution, displays each mapped electrogram (EGM) as a moving bar at its acquired 3D location relative to a stable fiducial reference, and is displayed over a bipolar voltage map. We developed an approach to differentiate atrial scar from conducting tissue using RM as a guide to ablation, and tested this approach in new users mapping post-AF-ablation ATs.

Source: Europace - October 5, 2017 Category: Cardiology Source Type: research