Scar identification, quantification, and characterization in complex atrial tachycardia: a path to targeted ablation?

Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology
Decebal Gabriel LaţcuNadir Saoudi

Abstract

Successful catheter ablation of scar-related atrial tachycardia depends on correct identification of the critical isthmus. Often, this is a represented by a small bundle of viable conducting tissue within a low-voltage area. It's identification depends on the magnitude of the signal/noise ratio. Ultra-high density mapping, multipolar catheters with small (eventually unidirectional) and closely-spaced electrodes improves low-voltage electrogram detection. Background noise limitation is also of major importance for improving the signal/noise ratio. Electrophysiological properties of the critical isthmus and the characteristics of the local bipolar electrograms have been recently demonstrated as hallmarks of successful ablation sites in the setting of scar-related atrial tachycardia.

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Citations

Oct 15, 2019·Pacing and Clinical Electrophysiology : PACE·Jacques Mt de Bakker
Sep 12, 2020·Pacing and Clinical Electrophysiology : PACE·Nilubon MethachittiphanArun R Sridhar
Feb 26, 2019·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Sabine Ernst, Stephan Willems

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