Abstract 17225: The Benefit of Contact Force Guided Catheter Ablation of Premature Ventricular Contraction in the Right Ventricular Outflow Tract
Background: Recently, multiple studies have reported the benefits of using contact force (CF) catheters in atrial fibrillation ablation. However, data on ventricular arrhythmia is lacking.
Objectives: The study sought to assess the safety and efficacy of an irrigated, CF-sensing catheter in the radiofrequency ablation of premature ventricular contractions (PVCs) originating from the right ventricular outflow tract as compared to a standard non-force sensing catheter.
Methods and Results: One hundred and fifteen patients with symptomatic PVC underwent catheter ablation with open-irrigated radiofrequency (RF) ablation by a CF sensing catheter (CF: 56 patients, SmartTouch, Biosense Webster) or a standard non-force sensing catheter (standard: 59 patients, ThermoCool, Biosense Webster). In the CF group, overall procedure time (36.9±5.0 min), fluoroscopy time (86.3±22.7s), and ablation time (60.3±21.4s) were significantly reduced, compared to the standard group (46.2±6.2min, 107.7±30.0s, and 88.7±32.3s, respectively, p<0.001). There was no significant difference in incidence of complications, but a trend of reduced incidence in CF, compared to standard group (with one steam pop, versus two-pericardial effusions, and one cardiac tamponade). The median CF value during ablation was 10 (IQR: 7-14) g. Compared to the patients with force time integral (FTI) less than 560.0gs, patients with higher FTI has shorter procedural time (39.6±5.0 vs. 34.3±3.3min, P<0.001) and fluoroscopy time (99.7±16.8 vs. 72.9±19.8s, P<0.001). Using a cutoff of 560gs for FTI, patients with low FTI required significantly longer in procedure time (39.6±5.0min vs. 34.3±3.3min, p<0.001), fluoroscopy time (99.7±16.8s vs. 72.9±19.8s, p<0.001).
Conclusion: PVC ablation with CF information reduced time of overall procedure, fluoroscopy and ablation, without increased complications.
Author Disclosures: Y. Xi: None. Z. Zhao: None. L. Gao: None. D. Chang: None. Y. Yang: None. X. Yin: None. Y. Xia: None. J. Cheng: None.
- © 2016 by American Heart Association, Inc.