关于心房回流回流回路的新见解:对狗无菌心膜炎模型的研究
K Uno1, K Kumagai, C M Khrestian
1Department of Medicine, Case Western Reserve University, Ohio.
Circulation
|September 24, 1999
概括
心房的回流回路始终涉及心房隔膜. 在某些情况下,八位数的重新进入发生在两个电路中,而另一些则涉及单个电路,总是包括隔膜组件.
科学领域:
- 心脏病学 心脏病学
- 电力生理学 电力生理学
- 心脏解剖学 心脏解剖学
背景情况:
- 心房动是一种常见的 supraventricular 高心率.
- 人们对心房的精确解剖基质和电路机制仍然不完全了解.
- 研究心房激活模式可以阐明回入电路路径.
研究的目的:
- 为了测试心房回流回路包含隔膜元件的假设.
- 描述心房重入的解剖路径和动态.
- 为了将心电图学发现与潜在的电生理学机制相关联.
主要方法:
- 在狗无菌心膜炎模型中诱导心房动.
- 在9只狗中研究了10次持续性心房 (>5分钟) 的情节.
- 利用电生理学绘图来分析心房激活模式,并识别回流回路.
主要成果:
- 所有研究的心房发作都显示出一个涉及心房隔膜的回入电路.
- 六个插曲展示了两个回流回路 (八的图形模式),共享一个右心房自由壁路径.
- 四个情节显示了一个单一的回流回路,总是包括隔膜组件和右心房自由壁中的功能阻塞线.
结论:
- 耳前的回流回路总是包括一个隔膜组件.
- 一个右心房自由壁重入电路并不总是必要的心房.
- 右心房自由壁中的八号重入和功能阻断线是某些心房动机制的关键特征.
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