PO-03-099 USE OF NOVEL OMNIPOLAR MAPPING IN SLOW PATHWAY LOCALIZATION AND ABLATION OF ATRIOVENTRICULAR NODAL RE-ENTRANT TACHYCARDIA

Precise localization of the slow atrioventricular nodal pathway (SP) is crucial to safe and successful ablation re-entrant tachycardia (AVNRT). However, interpatient anatomic variability can limit efficacy increase risk for heart block. Activation mapping in sinus rhythm using omnipolar technology (OT) delineate areas abrupt change propagation direction, which may reflect connections between fast pathways AVN (Fig 1). As such, OT offer a novel way identify SP guide AVNRT. To correlate potential sites identified with those via traditional methods compare procedural outcomes AVNRT ablations performed without mapping. We retrospectively evaluated patients undergoing first-time EnSite X EP system (Abbott, IL). In all cases, was induced confirmed as primary clinical arrhythmia through diagnostic pacing maneuvers. cases utilizing OT, activation maps Triangle Koch were created Abbott HD Grid catheter location “pivot points.” These compared ablation, where delivery radiofrequency energy resulted rapid onset junctional rhythm. Procedural metrics use OT. Of 12 total patients, 5 underwent Two group had atypical remaining 10 typical pivot points correlated located at median 2mm (IQR 0-3) from modification. Comparing not an average 6.8+1.9 8.3+8.3 lesions 138+43 296+269 seconds time delivered, respectively. Procedure times similar non-OT (131+23 vs. 115+52 minutes) despite longer duration than (18+11 8+4 minutes), likely due shorter time. facilitate efficient effective Further investigation needed validate its exact utility role.