Three-dimensional mapping and ablation of ventricular outflow tract ventricular tachyarrhythmia using Carto 3 system
Abstract：Objective To study the feasibility,safety and efficacy of 3-dimensional mapping and ablation of outflow tract tachyarrhythmia with Carto 3 system.Methods Carto 3 or Carto XP system and single catheter were used to reconstruct 3-dimensional ventricular geometry,to perform activation mapping,pacing,entrainment,and substrate mapping,as well as to perform radiofrequency ablation.Image merging was performed with multidetector CT in part of patients.After ablation,following up were conducted regularly by regional doctors.Results In Carto 3 group,the distribution of 24 successful ablation sites were as follow:septal wall of right ventricular outflow tract in 14 patients,free wall of right ventricular outflow tract in 5 patients,aortomitral continuity in 1 patient,main pulmonary artery in 1 patient,left ventricular outflow tract in 1 patient,left aorta sinus in 2 patients.In Carto XP group,the distribution of 24 successful ablation sites were as follow:septal wall of right ventricular outflow tract in 18 patients,free wall of right ventricular outflow tract in 3 patients,right aorta sinus in 2 patients,left aorta sinus in 1 patient.The mean procedure time[(55 ±25)min vs (67 ± 15)min,P ＜0.01]and the mean fluoroscopy time [(6 ±3)min vs (9 ± 5)min,P ＜ 0.01] were significantly shorter in Carto 3 group compared with Carto XP group.During follow-up of six months,ventricular tachyarrhythmia recurred in 2 patients.Conclusion Three-dimensional mapping and ablation of ventricular tachyarrhythmia can be performed safely,effectively and quickly by using Carto 3 system.
Keywords：Ventricular tachyarrhythmiaCarto 3 three-dimensional mapping systemRadiofrequency catheter ablation
Publication Date：2013-06-30
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)
Pages：3( 761-763 )