Clinical study on catheter ablation of tachyarrhythmias guided by Columbus 2.0 three-dimension cardiac electrophysiological mapping system
LI Xiaorong1, YU Jinbo1, QIU Zhaohui2, ZHANG Xumin1, ZHU Zhongsheng3, CUI Haiming4, WU Yizhang1, XIE Xin1, ZHOU Jian1, WANG Xuecheng1, HU Wei2，YANG Bing1
(Department of Cardiology, 1. Shanghai East Hospital, Tongji University, Shanghai 200120; 2. Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200336; 3. Shanghai Pudong Hospital, Shanghai 201399; 4. Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China)
Abstract：Objective To evaluate the efficacy and safety of the domestic Columbus 2.0 three-dimension (3D) cardiac electrophysiological mapping system and its supporting catheter in the treatment of tachyarrhythmias through a prospective, multicenter and singlearm study. Methods We selected 50 consecutive patients with tachyarrhythmias from 4 electrophysiological centers of Shanghai; 20 patients (40.0%) are males, the mean age of patients is (55.38±18.14) years old. Radiofrequency ablation was performed on these patients guided by Columbus 2.0 system and its supporting catheter. The immediate success rate, operation time, X-ray exposure time and dose, and adverse events were recorded. All the patients were followed up for 6 months. Results There are 34 patients with atrioventricular nodal reentry tachycardia, 11 cases with atrioventricular reentry tachycardia, one with atrial tachycardia, one with typical atrial flutter, and 3 patients with premature ventricular ntraction. The immediate success rate of the procedure is 100%; no catheter ablation related adverse event occurs during the perioperative period. The average operation time is 114.00 (89.75, 166.25) min, the average X-ray exposure time is 5.90 (3.78, 8.07) min, and the average X-ray exposure dose is 23.96 (8.00, 50.00) mGy. There is no recurrence during 6 months of follow-up. Conclusion The efficacy and safety of Columbus 2.0 3D cardiac electrophysiological mapping system and its supporting catheter is satisfying in treating tachyarrhythmias, especially supraventricular arrhythmias.
