Back to Search Start Over

Defining the substrate for ventricular tachycardia ablation: The impact of rhythm at the time of mapping

Authors :
Danesh K. Kella
Seth H. Sheldon
Amit Noheria
Deepak Padmanabhan
Thomas Munger
Samuel J. Asirvatham
Suraj Kapa
Source :
Indian Pacing and Electrophysiology Journal, Vol 20, Iss 4, Pp 147-153 (2020)
Publication Year :
2020
Publisher :
Elsevier, 2020.

Abstract

Background: Voltage mapping is critical to define substrate during ablation. In ventricular tachycardia, abnormal potentials may be targets. However, wavefront of activation could impact local signal characteristics. This may be particularly true when comparing sinus rhythm versus paced rhythms. We sought to determine how activation wavefront impacts electrogram characteristics. Methods: Patients with ischemic cardiomyopathy, ventricular tachycardia, and without fascicular or bundle branch block were included. Point by point mapping was done and at each point, one was obtained during an atrial paced rhythm and one during a right ventricular paced rhythm. Signals were adjudicated after ablation to define late potentials, fractionated potentials, and quantify local voltage. Areas of abnormal voltage (defined as

Details

Language :
English
ISSN :
09726292
Volume :
20
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Indian Pacing and Electrophysiology Journal
Publication Type :
Academic Journal
Accession number :
edsdoj.0e45c670619a4c2f9ac214f7afe7afae
Document Type :
article
Full Text :
https://doi.org/10.1016/j.ipej.2020.03.005