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Updated: Mar 11, 2026

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

Published on: January 31, 2019

通过使用高密度映射和电压时间关系来描述AV节点左下延伸

June K Pickett^1,2, Joshua R Hirsch^1,2, Michael Charles C Tan^1,2

¹Department of Medicine (Division of Cardiology), Baylor College of Medicine, Houston, Texas, USA.

Journal of cardiovascular electrophysiology

|March 10, 2026

概括

这项研究在鼻节奏期间在左心室 (LA) 确定了特定的电图,这可能表明心房节点 (AVN) 的左下延伸 (LIE). 这些部位的切除成功地治疗了典型的心房节回入性心力衰竭 (AVNRT) 病例.

科学领域:

电力生理学电力生理学
心脏解剖学心脏解剖学
医疗成像医学成像

背景情况:

在高密度的3D绘图中,科赫三角形在鼻节律 (SR) 期间识别了暗示AV节点 (AVN) 右下延伸 (RIE) 的信号.
在这些RIE信号的消去成功地治疗了典型的AV节点复发性心力衰竭 (AVNRT).
建议AVN的左下延伸 (LIE) 参与AVNRT,位于左心室 (LA) 的内区域.

研究的目的:

介绍使用CARTO Ripple绘制在SR的LA的使用情况.
为了识别低幅度,迟激活,多组件心房电图,类似于在RIE看到的.

主要方法:

在SR中使用多支线导管和CARTO-3系统对LA进行高密度3D映射.
卡托波动映射以显示LA激活和识别延迟的多元组件电图.
在感兴趣的地区手动审查本地电图.

主要成果:

低振幅,迟激活的多组件电图在32名患者中的26名被确定在inferoseptal LA区域.
这些信号与之前描述的RIE缓慢通路潜力相似.
在一个AVNRT病例中,在这个inferoseptal部位的切除导致了成功的高心率终止和非诱导性,在31个月后没有复发.

结论:

在SR中高密度3D映射可以在LA晚期激活的地点识别多组件远场电图.
在这些确定的部位的废除在一个具有挑战性的AVNRT病例中取得了成功.
需要进一步的研究来澄清这些信号与AVN的LIE之间的关系.

关键词:

在AVNRT AVNRT 这是SVT的SVT.绘制地图,绘制地图.

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