过器配置对双极EGM的影响:用于识别VT基底的最佳过器设置
Masateru Takigawa1,2,3,4, Frederic Sacher1,2, Claire Martin1,5,6
1Department of Cardiac Pacing and Electrophysiology, Bordeaux University Hospital (CHU), Bordeaux, France.
Journal of cardiovascular electrophysiology
|July 11, 2023
概括
在心室动脉冲动 (VT) 切除过程中,对双极电图 (EGM) 的最佳过需要特定的设置. 使用 30-250 Hz 或 30-500 Hz 配置可以最大限度地降低噪音,并检测局部异常心室活动 (LAVA).
科学领域:
- 电力生理学 电力生理学
- 通过心脏切除术 (Cardiac Ablation) 进行心脏切除.
- 信号处理 信号处理
背景情况:
- 在心室高心率 (VT) 切除过程中,过对双极电图 (EGM) 的影响尚不清楚.
- 需要对过器配置进行系统检查,以优化对静脉瘤切除的EGM分析.
研究的目的:
- 为了确定心室动脉冲动 (VT) 移除过程中双极电图 (EGM) 的最佳过器配置.
- 评估不同过器设置对基线波动,噪声,电压和局部异常心室活动 (LAVA) 检测的影响.
主要方法:
- 包括15名进行静脉瘤切除的患者.
- 八种不同的过器配置 (例如1.0-250 Hz,30-250 Hz,30-500 Hz) 被前性地应用于废除导管的远端双极.
- 分析基线波动,噪声,双极电压和LAVA在稳定的EGM中存在的分析,接触力良好 (>10g).
主要成果:
- 基线波动仅发生在高通波器 (HPF) ≤10 Hz时.
- 噪音水平在30-50Hz时最低,并且在更宽的低通波器 (LPF) 时增加,在30-1000Hz时达到峰值.
- 局部异常心室活动 (LAVA) 在30-250 Hz和30-500 Hz配置中最频繁地检测到,并且在LPF ≤100 Hz或HPF ≤10 Hz时明显错过. 一个50Hz的隙过器降低了电压和LAVA检测.
结论:
- 双极EGM特征受到痕和边界区域的过器设置的显著影响.
- 推使用30-250Hz或30-500Hz的过器配置进行静脉切除,以最大限度地降低噪声并最大限度地提高LAVA检测.
- 避免使用50Hz的隙过器,可以防止错过关键的VT基质信息.
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