English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

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 similar between two groups, the average force‐time integral ( FTI ) was significantly higher in the  CF ‐guided group (298.3 ± 65. 2 g·s vs 255.1 ± 38.3 g·s,  P  =   .007). The atrial arrhythmia‐free survival at 1 year demonstrated no difference between the two groups (84.0% in the  IMP ‐guided group vs 80.0% in the  CF ‐guided group,  P  =   .737). If the use of any antiarrhythmic drug beyond the blanking period was considered as a failure, the clinical success rate at 1 year was 52.0% for the  CF ‐guided group vs 56.0% for the  IMP ‐guided group ( P  =   .813).    Conclusions  Atrial fibrillation ablation using an automated annotation system guided by  CF  improved the success rate of  PVI  after the initial circumferential ablation. An  IMP ‐guided annotation combined with catheter stability criteria showed similar clinical outcomes as compared to the  CF ‐guided annotation.

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