领先V6中的S波的动态变化:左束分支捕获的新型视觉指标
Shanshan Zhuo1, Longfu Jiang1, Xiaojie Cai1
1Department of Cardiology, Ningbo No.2 Hospital, Ningbo, Zhejiang, China.
The Canadian journal of cardiology
|September 5, 2025
概括
领先V6的S波动性地变化,表明电极放置期间成功捕获左束分支. 这种视觉提示有助于实现选择性左束枝节奏 (SLBBP).
科学领域:
- 电生理学
- 心脏节拍
- 心脏病学
背景情况:
- 在左束分支节奏 (LBBP) 插入电极时,S波在V6的作用尚不清楚.
- 准确的置对于有效的LBBP和患者结果至关重要.
- 目前用于确认领先位置的方法可能无法完全捕捉捕获模式的细微差别.
研究的目的:
- 在不同的左束分支节奏捕获模式中分析领先V6的S波形态变化.
- 调查这些S波变化背后的机制.
- 为了确定选择性LBBP (SLBBP) 的S波的诊断值.
主要方法:
- 一项针对243名接受选择性LBBP (SLBBP) 的患者的研究.
- 使用连续节拍技术将电生理特征分为四种模式:左心室隔膜节拍 (LVSP),低输出非选择性LBBP (NSLBBP),低输出NSLBBP和SLBBP.
- 在这些模式中评估V6和R波峰值时间的S波形态.
主要成果:
- 在V6中S波的存在逐渐增加:从35.4% (LVSP) 到97.9% (SLBBP).
- 随着节奏从LVSP转向NSLBBP,然后转向SLBBP,观察到S波的显著加深和出现.
- 在SLBBP中,V6中的S波显示出高灵敏度 (97.9%) 和特异性 (100%) 来确认捕获.
结论:
- 领先V6的S波是一个动态指标,随着不同的左束分支捕获模式而变化.
- 在V6中动态变化的S波作为成功捕获左束分支的新视觉标记.
- 这一发现可以提高选择性左束分支节奏过程中的引线放置的准确性和效率.
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