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Radiofrequency catheter ablation of atrial fibrillation: Electrical modification suggesting transmurality is faster achieved with remote magnetic catheter in comparison with contact force use
Author(s) -
Bun SokSithikun,
Ayari Anis,
Latcu Decebal Gabriel,
Errahmouni Abdelkarim,
Saoudi Nadir
Publication year - 2017
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/jce.13222
Subject(s) - medicine , ablation , atrial fibrillation , catheter ablation , sinus rhythm , rf ablation , catheter , cardiology , radiofrequency catheter ablation , surgery
Background Remote magnetic navigation (RMN) and contact force (CF) sensing catheters are available technologies for radiofrequency (RF) catheter ablation of atrial fibrillation (AF). Our purpose was to compare time to electrogram (EGM) modification suggesting transmural lesions between RMN and CF‐guided AF ablation. Methods and results A total of 1,008 RF applications were analyzed in 21 patients undergoing RMN (n = 11) or CF‐guided ablation (n = 10) for paroxysmal AF. All procedures were performed in sinus rhythm during general anesthesia. Time to EGM modification was measured until transmurality criteria were fulfilled: (1) complete disappearance of R if initial QR morphology; (2) diminution > 75% of R if initial QRS morphology; (3) complete disappearance of R’ of initial RSR’ morphology. Impedance drop as well as force time integral (FTI) were also assessed for each application. Mean CF at the beginning of each RF application in the CF group was 11 ± 2 g and mean FTI per application was 488 ± 163 gs. Time to EGM modification was significantly shorter in the RMN group (4.52 ± 0.1 seconds vs. 5.6 ± 0.09 seconds; P < 0.00001). There was no significant difference between other procedural parameters. Conclusion Remote magnetic AF ablation is associated with faster EGM modification suggesting transmurality than optimized CF and FTI‐guided catheter ablation.