Comparison of the efficacy between impedance-guided and contact force-guided atrial fibrillation ablation using an automated annotation system.

ABSTRACT:

Background

This study compared the efficacy of catheter ablation of atrial fibrillation (AF) between impedance (IMP)-guided and contact force (CF)-guided annotation using the automated annotation system (VisiTag™).

Methods

Fifty patients undergoing pulmonary vein isolation (PVI) for AF were randomized to the IMP-guided or CF-guided groups. The annotation criteria for VisiTag™ were a 10 second minimum ablation time and 2 mm maximum catheter movement range. A minimum CF of 10 g was added to the criteria in the CF-guided group. In the IMP-guided group, a minimum IMP drop of over 5 Ω was added to the criteria.

Results

The rates of successful PVI after an initial ablation line were higher in the CF-guided group (80% vs 48%, P = .018). Although average CF was

SUBMITTER: Park HS 

PROVIDER: S-EPMC6010015 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature