1.中山大学附属第一医院心血管内科,广东 广州,510080
2.湘南学院附属医院心血管内科,湖南 郴州,423000
李杰,临床博士后,研究方向:心律失常,E-mail:lijie268@mail.sysu.edu.cn
收稿:2020-08-12,
纸质出版:2021-01-20
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李杰,严凤娇,唐娜等.高密度高分辨标测下外科术后房性心动过速的电生理特征[J].中山大学学报(医学科学版),2021,42(01):95-101.
LI Jie,YAN Feng-jiao,TANG Na,et al.Electrophysiologic Characteristics of Post-cardiac-surgical Atrial Tachycardia under Ultra-high Density and High-resolution Mapping[J].Journal of Sun Yat-sen University(Medical Sciences),2021,42(01):95-101.
李杰,严凤娇,唐娜等.高密度高分辨标测下外科术后房性心动过速的电生理特征[J].中山大学学报(医学科学版),2021,42(01):95-101. DOI:
LI Jie,YAN Feng-jiao,TANG Na,et al.Electrophysiologic Characteristics of Post-cardiac-surgical Atrial Tachycardia under Ultra-high Density and High-resolution Mapping[J].Journal of Sun Yat-sen University(Medical Sciences),2021,42(01):95-101. DOI:
目的
2
观察在高密度、高分辨率视觉下的心外科术后房性心动过速(房速)的电生理特点及消融效果。
方法
2
回顾分析自2016年3月至2019年12月在中山大学附属第一医院因心外科术后房速,应用Orion微电极网蓝与Rhythmia 标测系统进行标测消融治疗的全部患者。
结果
2
共入选21名患者,总共记录到26种房速,平均每种房速的标测时间为(19.1±7.1) min,所采取的电图(19 495±12 798)个。26种房速中,按部位分:20(76.9%)个位于右房,5(19.2%)个位于左房,1(3.8%)个为左右双房大折返;按心动过速机制分:24(92.3%)个为大折返房速,1(3.8%)个为微折返,1(3.8%)个为局灶房速。在大折返房速中,7个为双环“8”字折返,消融一环过程中有4个转为单环折返。另有一例为跨房间隔传导的双房大折返。21例患者2例复发,其中1例当时仅对游离壁疤痕至下腔静脉的连线进行消融,后再次手术时标测为三尖瓣峡部依赖性房速。
结论
2
心外科术后房速形式多样,以大折返房速为主,极少数为微折返或局灶起源。大折返房速可表现为双环折返或双房大折返。消融时除针对本次心动过速外,还需根据心房的基质情况进行预防性干预。
Objective
2
To explore the electrophysiologic characteristics of post-cardiac-surgical atrial tachycardia (AT) under ultra-high density and high-resolution mapping.
Methods
2
Consecutive cases with post-cardiac-surgical AT and taking mapping using Orion basketball mini-electrode and Rhythmia mapping system were collected and analyzed in the first affiliated hospital of Sun Yat-sen University from march 2016 to december 2019.
Results
2
Totally 26 ATs were recorded in the 21 patients with a mean mapping time (19.1±7.1)min. Among them, 20 (76.9%) ATs located in right atrium, 5 (19.2%) in left atrium, and one was a bi-atrial macro-reentrant AT. According the difference of tachycardia mechanism, 24 (92.3%) were macro-reentrant ATs, one was micro-reentrant, and the other was local activation. In the macro-reentrant ATs, 7 cases showed a dual-loop reentrant circuit configurated “figure-of-eight”, one was a bi-atrial macro-reentry with a transmural conduction from left side to right side of atrial septum. During ablation, 4 patients in the 7 cases with “figure-of-eight” dual-loop reentries turned into a single-loop reentry. During follow-up with an average of 16 (4, 36) months, 2 cases recurred, and one was because of no prophylactic ablation on the tricuspid isthmus.
Conclusions
2
Post-cardiac-surgical atrial tachycardia mainly manifests as complicated macro-reentrant AT. Some show a dual-loop reentry and sometimes a bi-atrial macro-reentry. During ablation, some prophylactic ablation according to the substrate is necessary.
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