CARTO三维标测零射线下射频导管消融术治疗主动脉窦起源室性早搏的临床研究  

Efficacy of CARTO Three-dimensional Mapping and Zero X-ray Radiofrequency Catheter Ablation of Ventricular Premature Contraction Originating From Aortic Sinus

作　　者：田竞宇 朱正宇 王睿峥 田云丽 黄晶[2] 王炎[3] TIAN Jingyu;ZHU Zhengyu;WANG Ruizheng;TIAN Yunli;HUANG Jing;WANG Yan(Tongji Medical College of Huazhong University of Science and Technology,Wuhan 430030,China;Department of Cardiology,Guizhou Provincial People's Hospital,Guiyang 550002,China;Department of Cardiology,Tongji Medical College of Huazhong University of Science and Technology,Wuhan 430030,China)

机构地区：[1]华中科技大学同济医学院,武汉430030 [2]贵州省人民医院心内科,贵阳550002 [3]华中科技大学同济医学院附属同济医院心内科,武汉430030

出　　处：《中国循环杂志》2024年第3期267-272,共6页Chinese Circulation Journal

基　　金：华中科技大学同济医学院大学生创新项目(2022A0010)。

摘　　要：目的:CARTO三维标测下精确定位冠状动脉(冠脉)开口位置,零射线下射频导管消融术治疗主动脉窦起源室性早搏(ASC-PVC)的效果分析,并将主动脉窦进行分区后评估相应区域的消融风险。方法:纳入2020年1月至2023年1月因ASC-PVC行射频导管消融术治疗的66例患者,常规组(n=32)按照常规方法应用CARTO 3系统构建主动脉窦模型,经消融导管中空管道行冠脉造影明确靶点与冠脉开口距离后进行消融治疗。治疗组(n=34)应用CARTO 3系统构建主动脉窦与冠脉开口模型并对主动脉窦进行精细分区,通过消融导管阻抗变化规律再次快速定位确认冠脉开口后,在零射线下行室性早搏电激动标测及消融治疗。收集消融导管主动脉窦内的阻抗数据,同时比较两组患者总手术时间及主动脉窦内操作时间、术中对比剂用量、X线曝光时间、手术即刻与近期(6个月)成功率以及并发症发生率,分析两组患者消融成功靶点的分布位置。结果:治疗组与常规组的手术即刻成功率(93.8%vs.94.1%)与近期成功率(90.6%vs.88.2%)差异均无统计学意义(P均>0.05)。治疗组的总手术时间[(58.76±4.94)min vs.(66.91±5.94)min]、主动脉窦内操作时间[(43.12±4.49)min vs.(50.31±5.18)min]均明显短于常规组(P均<0.001)。治疗组患者的主动脉窦4个分区的阻抗分析显示,消融导管从主动脉窦内移动到冠脉开口并进入冠脉内的过程中,阻抗陡然进行性升高,与主动脉窦内其他部位的阻抗相比差异均有统计学意义(P均<0.001)。结论:在零射线下标测并进行射频导管消融术治疗ASC-PVC可以简化手术流程、缩短手术时间。消融导管头端阻抗变化可作为定位冠脉开口的依据。将主动脉窦精细分区后可详细评估在相应靶点进行消融治疗的风险大小。Objectives:To finely divide the aortic sinus into sections and accurately localize the coronary ostium through CARTO threedimensional mapping,and to assess the clinical effects of treating aortic sinus cusps premature ventricular contraction(ASC-PVC)and the ablation risk in the corresponding area with zero X-ray radiofrequency ablation.Methods:A total of 66 patients who underwent radiofrequency ablation for ASC-PVC from January 2020 to January 2023 were included in this analysis,patients were divided into experimental group(n=34)and conventional group(n=32).In the conventional group,the CARTO 3 system was used to create an aortic sinus model through the conventional method.The earliest stimulating target was identified by using electrical stimulation mapping(ESM).Radiofrequency ablation treatment was performed after the distance between the target and the coronary ostium was precisely measured by coronary angiography through the hollow tube of the ablation catheter or coronary angiography tube.In the experimental group,the CARTO 3 system was used to build a model of the aortic sinus and the coronary ostium and aortic sinus were divided into sections.The earliest stimulating target was identified by ESM.After localizing coronary ostium through the impedance changing pattern on the ablation catheter tips,catheter ablation was performed with zero X-ray.The data regarding the impedance of the ablation catheter in the aortic sinus were collected.The total operative time,the operative time in the aortic sinus,contrast dosage,X-ray exposure time,immediate and short-term success rates of the operation and complication rates were compared between the two groups.Besides,the distribution of successfully ablated targets and their relationship with the risk of ablation were analyzed in both groups.Results:There was no significant statistical difference in the immediate and short-term success rates between the two groups(93.8%vs.94.1%;90.6%vs.88.2%,both P>0.05).The experimental group did not receive contrast agents during the

关 键 词：零射线 射频导管消融术 主动脉窦 室性早搏 

分 类 号：R54[医药卫生—心血管疾病]