Observational study on the identification of left atrial tachycardia circuits using Local Activation Time Histogram.

IF 1.7 4区医学 Q3 CARDIAC & CARDIOVASCULAR SYSTEMS Pace-Pacing and Clinical Electrophysiology Pub Date : 2024-07-14 DOI:10.1111/pace.15040

Daisuke Yamagishi, Koichi Kanazawa, Kazuki Saito, Tsunesuke Kono

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Abstract

Background: Mapping of atypical atrial arrythmias arising in the left atrium is often challenging. The Local Activation Time (LAT) Histogram, a new function of the 3D color mapping system CARTO version 7, may help improve identification of atrial tachycardia circuits. We aimed to assess the effectiveness of the LAT Histogram for identification of left atrial tachycardia circuits.

Methods: This retrospective study compared 25 consecutive cases of left atrial tachycardia that were treated before use of LAT Histogram (unused group) and 25 consecutive cases that were treated after introduction of LAT Histogram (used group) at Nagano Chuo Hospital. We evaluated whether we could identify the circuit of left atrial tachycardia from the electrophysiology lab data during ablation and the CARTO system data and whether we could perform effective ablation.

Results: Door-to-door time, skin-to-skin time, and fluoroscopy time (p ≤ .011) were all shorter in the LAT Histogram used group versus unused group, while mapping analysis times were longer in the used group (p ≤ .019). A significantly greater number of cases in the LAT Histogram used compared with the unused group had ablation for entrance or exit points (19 vs. 10 cases; p = .001 for first map). Ablation resulted in a return to sinus rhythm and changed cycle length at the first mapping in 20 cases (80%) in the LAT Histogram unused group and in 24 cases (96%) in the used group.

Conclusions: LAT Histogram may provide a simple and effective method to identify entrance and exit locations in left atrial tachycardia.

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利用局部激活时间直方图识别左心房心动过速回路的观察研究。

背景：绘制产生于左心房的非典型房性心律失常图通常具有挑战性。局部激活时间（LAT）直方图是三维彩色图谱系统 CARTO 第 7 版的一项新功能，可帮助改善房性心动过速回路的识别。我们旨在评估 LAT 直方图在识别左心房心动过速回路方面的有效性：这项回顾性研究比较了长野中央医院连续 25 例在使用 LAT 直方图之前接受治疗的左房性心动过速病例（未使用组）和连续 25 例在使用 LAT 直方图之后接受治疗的病例（已使用组）。我们评估了能否从消融过程中的电生理学实验室数据和 CARTO 系统数据中确定左房心动过速的回路，以及能否进行有效的消融：结果：使用LAT直方图组与未使用组相比，门到门时间、皮肤到皮肤时间和透视时间（p ≤ .011）都更短，而使用组的映射分析时间更长（p ≤ .019）。与未使用 LAT 直方图组相比，使用 LAT 直方图组中对入口或出口点进行消融的病例数明显更多（19 例对 10 例；第一张图的 p = .001）。未使用 LAT 直方图组中有 20 例（80%）和使用组中有 24 例（96%）消融后恢复了窦性心律，并在第一次绘图时改变了周期长度：LAT 直方图可为确定左房心动过速的入口和出口位置提供一种简单有效的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Pace-Pacing and Clinical Electrophysiology 医学-工程：生物医学

CiteScore

2.70

自引率

5.60%

发文量

209

审稿时长

2-4 weeks

期刊介绍： Pacing and Clinical Electrophysiology (PACE) is the foremost peer-reviewed journal in the field of pacing and implantable cardioversion defibrillation, publishing over 50% of all English language articles in its field, featuring original, review, and didactic papers, and case reports related to daily practice. Articles also include editorials, book reviews, Musings on humane topics relevant to medical practice, electrophysiology (EP) rounds, device rounds, and information concerning the quality of devices used in the practice of the specialty.

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