Atrioventricular Nodal Reentrant Tachycardia Ablation Using Mini-Electrode Recordings

Clementy, Nicolas, Pineaud, Gerome, Bisson, Arnaud ORCID: 0000-0002-3449-1800 and Babuty, Dominique (2022) Atrioventricular Nodal Reentrant Tachycardia Ablation Using Mini-Electrode Recordings. JOURNAL OF CLINICAL MEDICINE, 11 (1). 282-.

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Official URL: http://dx.doi.org/10.3390/jcm11010282

Abstract

Catheter ablation of the slow pathway in patients with atrioventricular nodal reentrant tachycardia (AVNRT) is mainly performed using anatomical landmarks. We sought to see whether a new ablation catheter equipped with mini-electrodes may facilitate the mapping of slow pathway potentials for AVNRT ablation. We prospectively included patients referred for AVNRT in our center. Mapping and ablation were performed using an irrigated catheter equipped with 3 insulated mini-electrodes on the distal tip. Thirteen consecutive patients were included (85% female, median age 46 years). Slow pathway potentials could be identified in 77% of cases on mini-electrode bipolar tracings, versus 15% on conventional bipolar tracings (<i>p</i> = 0.0009). At the end of the procedure, double potentials on the ablation line were identified in all patients, only on mini-electrode bipolar tracings. Following ablation, an interval separating double potentials in sinus rhythm ≥15% of baseline tachycardia cycle length was associated with non-inducibility in all patients (<i>p</i> < 0.0001). No recurrence occurred during 1 year of follow-up. The use of mini-electrodes may help target slow pathway potentials during AVNRT ablation. Identification of sufficiently split double potentials on the ablation line might represent an electrophysiological endpoint in these patients.

Item Type:	Article
Uncontrolled Keywords:	atrioventricular nodal reentrant tachycardia, conduction block, double potential, mini-electrode, radiofrequency ablation, slow pathway
Divisions:	Faculty of Health and Life Sciences Faculty of Health and Life Sciences > Institute of Life Courses and Medical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	19 Jan 2023 09:53
Last Modified:	13 Feb 2024 16:22
DOI:	10.3390/jcm11010282
Open Access URL:	https://doi.org/10.3390/jcm11010282
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3167135