Koch’s triangle voltage mapping for cryoablation of slow pathway in children: preliminary data of a novel high-density technique
- 25.10.2021
Erschienen in:
- Verfasst von
- Fabrizio Drago
- Pietro Paolo Tamborrino
- Luigina Porco
- Marta Campisi
- Veronica Fanti
- Roberta Annibali
- Massimo Stefano Silvetti
- Erschienen in
- Journal of Interventional Cardiac Electrophysiology | Ausgabe 3/2022
Abstract
Purpose
Different authors have described three-dimensional (3D) voltage mapping of the Koch’s triangle (KT) in order to find low-voltage bridges (LVB) as targets for a successful transcatheter ablation (TCA) of the slow pathway (SP) in children.
Recently, the Advisor High Density (HD) Grid™ mapping catheter was introduced as new multipolar catheter for HD mapping. The aim of the study was to describe our preliminary experience with the use of HD Grid™ catheter in LVB and electrophysiologically guided cryoablation of SP in children.
Methods
Twenty-one children (mean age 13±3 years) with atrioventricular nodal re-entrant tachycardia (AVNRT) underwent cryoablation of SP guided by voltage HD mapping of the KT using HD Grid™ catheter. In order to better highlight the differences with conventional mapping, point collection was performed in each patient with this new multipolar catheter and with a quadripolar catheter.
Results
The conventional mapping collected 871±262 points and used 211±80 points in 887±275 s, whereas HD mapping collected 7468±2947 points, using 604±165 points in 513±181 s (p<0.001). Moreover, the LVB area mapped with HD Grid™ was about one-half smaller and clearly delineated.
Cryoablation acute success rate was 100%. Overall median fluoroscopy exposure was 0.08 (0.01–5.42) μGy/m2, with a median fluoroscopy time of 0.1 (0.0–0.6) min. During the follow-up (4.8 ± 3.7 months), there were no recurrences. No complications occurred.
Conclusions
Our preliminary experience shows that HD mapping is faster and offers higher spatial resolution and definition. Procedural time can be reduced maintaining the TCA safe, with reduced fluoroscopy use and success.
Anzeige
- Titel
- Koch’s triangle voltage mapping for cryoablation of slow pathway in children: preliminary data of a novel high-density technique
- Verfasst von
-
Fabrizio Drago
Pietro Paolo Tamborrino
Luigina Porco
Marta Campisi
Veronica Fanti
Roberta Annibali
Massimo Stefano Silvetti
- Publikationsdatum
- 25.10.2021
- Verlag
- Springer US
- Erschienen in
-
Journal of Interventional Cardiac Electrophysiology / Ausgabe 3/2022
Print ISSN: 1383-875X
Elektronische ISSN: 1572-8595 - DOI
- https://doi.org/10.1007/s10840-021-01081-0
Dieser Inhalt ist nur sichtbar, wenn du eingeloggt bist und die entsprechende Berechtigung hast.
