Use of the new contact force sensing ablation catheter dramatically reduces fluoroscopy time during atrial fibrillation ablation procedures

Abstract

Objectives: To study the impact of contact force (CF) sensing on fluoroscopy, procedure, left atrial (LA) and ablation times and number of ablations during atrial fibrillation (AF) ablation. Background: Catheter ablation is an effective treatment for symptomatic AF. Recently a new ablation catheter providing real-time CF has been approved for use. Methods: A nested case-control study was performed comparing radiofrequency ablation of AF using the irrigated CF-sensing ThermoCool SmartTouch catheter versus open-irrigated ThermoCool SF catheter (Biosense Webster, Inc., Diamond Bar, California). Demographic and procedure data were obtained and student t-test was used to compare data between groups. Results: Thirty consecutive adult patients were included with 15 patients in each group. Mean fluoroscopy time was significantly lower in CF group (19.4 ± 8 vs 40.7 ± 8 min, p < 0.0001). LA time was significantly lower in CF group (151.7 ± 44 vs 185.7 ± 35 min, p = 0.01). There were no significant differences in procedure time between CF and SF groups (204 ± 37 vs 207 ± 36 min) and ablation time (121 ± 32 vs 122 ± 37 min). When patients who only underwent pulmonary vein isolation (PVI) were compared, fluoroscopy time was significantly lower in CF group (18 ± 9 vs 37.8 ± 5 min, p < 0.0001) as was LA time (141.4 ± 39 vs 171.8 ± 30 min, p = 0.04). Fluoroscopy time was also significantly lower in CF subgroup with additional ablation (20.9 ± 7 vs 44.9 ± 10 min, p < 0.001). Conclusion: Use of CF-sensing catheter significantly reduced fluoroscopy and LA times during AF ablation with similar acute efficacy.

Keywords

• Contact force
• Radiofrequency ablation
• Atrial fibrillation