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他的电图交替显示了双波前线输入到他的束中,并在他的束中纵向解离
Y Zhang1, S Bharati, K A Mowrey
1Department of Cardiology, the Cleveland Clinic Foundation, Cleveland, Ohio, 44195, USA.
Circulation
|August 15, 2001
概括
他的电图 (HE) 交替显示了心房节 (AVN) 中明显的快速和慢速波面. 这表明AVN内部的功能解离,有助于理解复发性心律失常.
科学领域:
- 心血管电生理学 心血管电生理学
- 心脏解剖学和生理学心脏解剖学和生理学
背景情况:
- 在心房结节 (AVN) 传导过渡期间观察到他的电图 (HE) 幅度和形态的变化.
- 这些HE变化对双AVN电生理学的意义尚不清楚.
研究的目的:
- 为了研究在AVN导电的变化期间改变他的电图特征的现象.
- 阐明这些变化在双AVN电生理学中的作用及其与心律失常的潜在联系.
主要方法:
- 用编程电动步调对子心房-AVN制剂进行实验.
- 绘制他的电图 (HE) 沿着他的束与表面电极.
- 记录细胞动作潜力 (AP) 来识别激发波线.
主要成果:
- 高级His捆HEs在过早跳动时的振幅下降,而低级HEs显著增加.
- 观察到高层和低层HE激活序列的时间转移,与传导速度变化相关.
- 蜂记录证实了与HE交替剂相关的明显的快速和缓慢激发波线的存在.
结论:
- 证据表明,在AV交叉口内,由于不同快速和缓慢的波面到达His捆,有功能纵向解离到两个域.
- 典型的HE交替线作为不同波线的敏感指标,以及它们在心律失常中的作用.
- 这些发现提高了对双AVN电生理学背后的机制的理解.
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