Spontaneous onset of atrial fibrillation.

Spontaneous onset of atrial fibrillation.
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心房颤动自发发作。

DOI:
10.1016/j.physd.2008.12.004
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发表时间:
2009-06-01
期刊:
Physica D. Nonlinear phenomena
影响因子:
--
通讯作者:
Pertsov AM
Pertsov AM
中科院分区:
其他
文献类型:
--
作者:
Zemlin CW;Mitrea BG;Pertsov AM

文献摘要

参考文献

相似文献

最常见的情况是,起源于肺静脉(PV)心肌袖部的电脉冲快速爆发,从而触发房颤。然而,人们对这种爆发的性质仍知之甚少。在这里,我们提出了一个与大量关于静脉曲张电生理学的经验信息相一致的爆发机制。这种机制本质上是非局部性的,包括在静脉曲张的肌袖的远端自发地启动非持续的螺旋波。它再现了实验中观察到的猝发动力学,包括它们的频率、间歇性特征,以及肺静脉中不同寻常的电信号形状,这让人想起所谓的早期后除极(EAD)。
Most commonly, atrial fibrillation is triggered by rapid bursts of electrical impulses originating in the myocardial sleeves of pulmonary veins (PVs). However, the nature of such bursts remains poorly understood. Here, we propose a mechanism of bursting consistent with the extensive empirical information about the electrophysiology of the PVs. The mechanism is essentially non-local and involves the spontaneous initiation of non-sustained spiral waves in the distal end of the muscle sleeves of the PVs. It reproduces the experimentally observed dynamics of the bursts, including their frequency, their intermittent character, and the unusual shape of the electrical signals in the pulmonary veins that are reminiscent of so-called early afterdepolarizations (EADs).
DOI: 10.1016/s0735-1097(01)01731-4
发表时间: 2002-01-16
影响因子: 24
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期刊: HEART RHYTHM
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发表时间: 1993-03-01
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