Sinus rhythm detection of conducting channels and ventricular tachycardia isthmus in arrhythmogenic right ventricular cardiomyopathy

Background The identification of conducting channels (CCs) based on its relative high voltage or the presence of electrograms with delayed components has been proposed for substrate-guided scar-related ventricular tachycardia (VT) ablation. The relationship of these channels with the VT isthmuses re...

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Veröffentlicht in:	Heart rhythm 2014-05, Vol.11 (5), p.747-754
Hauptverfasser:	Fernández-Armenta, Juan, MD, Andreu, David, Msc, PhD, Penela, Diego, MD, Trucco, Emilce, MD, Cipolletta, Laura, MD, Arbelo, Elena, MD, PhD, Berne, Paola, MD, María Tolosana, Jose, MD, Pedrote, Alonso, MD, PhD, Brugada, Josep, MD, PhD, Mont, Lluis, MD, PhD, Berruezo, Antonio, MD, PhD
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult Arrhythmogenic right ventricular cardiomyopathy Arrhythmogenic Right Ventricular Dysplasia - diagnosis Arrhythmogenic Right Ventricular Dysplasia - physiopathology Arrhythmogenic Right Ventricular Dysplasia - surgery Body Surface Potential Mapping - methods Cardiovascular Catheter Ablation Conducting channels Electrocardiography Epicardial ablation Female Heart Conduction System - physiopathology Heart Conduction System - surgery Heart Rate - physiology Humans Imaging, Three-Dimensional Male Radiofrequency ablation Substrate-guided ablation Tachycardia, Ventricular - diagnosis Tachycardia, Ventricular - physiopathology Tachycardia, Ventricular - surgery Treatment Outcome Ventricular tachycardia
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Zusammenfassung:	Background The identification of conducting channels (CCs) based on its relative high voltage or the presence of electrograms with delayed components has been proposed for substrate-guided scar-related ventricular tachycardia (VT) ablation. The relationship of these channels with the VT isthmuses remains unclear. Objective To assess the link between CCs identified during sinus rhythm (SR) and VT isthmuses in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC). Methods Twenty-two consecutive patients with ARVC undergoing substrate-guided VT ablation (scar dechanneling technique) were analyzed. High-density endocardial and epicardial electroanatomic maps were obtained during SR. Standard bipolar cutoff values (0.5–1.5 and
ISSN:	1547-5271 1556-3871
DOI:	10.1016/j.hrthm.2014.02.016