Benefit of Contact Force-Guided Catheter Ablation for Treating Premature Ventricular Contractions.

Benefit of Contact Force-Guided Catheter Ablation for Treating Premature Ventricular Contractions.
Tex Heart Inst J. 2020 Feb;47(1):3-9
Authors: Zhao Z, Liu X, Gao L, Xi Y, Chen Q, Chang D, Xiao X, Cheng J, Yang Y, Xia Y, Yin X
Abstract
We evaluated whether an irrigated contact force-sensing catheter would improve the safety and effectiveness of radiofrequency ablation of premature ventricular contractions originating from the right ventricular outflow tract. We retrospectively reviewed the charts of patients with symptomatic premature ventricular contractions who underwent ablation with a contact force-sensing catheter (56 patients, SmartTouch) or conventional catheter (59 patients, ThermoCool) at our hospital from August 2013 through December 2015. During a mean follow-up of 16 ± 5 months, 3 patients in the conventional group had recurrences, compared with none in the contact force group. Complications occurred only in the conventional group (one steam pop; 2 ablations suspended because of significantly increasing impedance). In the contact force group, the median contact force during ablation was 10 g (interquartile range, 7-14 g). Times for overall procedure (36.9 ± 5 min), fluoroscopy (86.3 ± 22.7 s), and ablation (60.3 ± 21.4 s) were significantly shorter in the contact force group than in the conventional group (46.2 ± 6.2 min, 107.7 ± 30 s, and 88.7 ± 32.3 s, respectively; P <0.001). In the contact force group, case...

Source: Texas Heart Institute Journal - January 31, 2020 Category: Cardiology Authors: Zhao Z, Liu X, Gao L, Xi Y, Chen Q, Chang D, Xiao X, Cheng J, Yang Y, Xia Y, Yin X Tags: Tex Heart Inst J Source Type: research