在先前隔离的肺静脉中恢复电导:不同的策略的合理性?
Kumaraswamy Nanthakumar1, Vance J Plumb, Andrew E Epstein
1Division of Cardiovascular Disease, University of Alabama, Birmingham, USA. kn@crml.uab.edu
Circulation
|March 3, 2004
概括
肺静脉隔离 (PVI) 后的复发性心房 (AF) 通常是由于回归PV导电. 重复PVI显著改善了这些患者的临床结果,这表明需要改进技术才能获得长期成功.
科学领域:
- 心脏病学 心脏病学
- 电力生理学 电力生理学
- 医疗器械 医疗器械
背景情况:
- 前庭动 (AF) 复发后肺静脉隔离 (PVI) 可能源于返回的PV导电或非PV来源.
- 描述电生理学发现和临床结果对于完善AF切除策略至关重要.
研究的目的:
- 调查PVI后AF复发的电生理机制.
- 为了评估重复PVI程序的临床疗效.
主要方法:
- 分析51个肺静脉 (PVs) 在15名患者接受重复的PVI复发性AF.
- 使用射频 (RF) 或冷化技术分离了PVs.
- 对光伏导电和非光伏焦点的电生理学评估.
主要成果:
- 在51个先前隔离的PV中,在42个PV中观察到传导的恢复.
- 在至少两个PV中经常发生反复导电;只有一个非PV焦点被确定.
- 重复PVI需要更少的RF应用,并在15个月内在52名患者中的51名患者中显著改善了临床状况.
结论:
- 恢复光伏导电是PVI后AF复发的主要驱动因素.
- 重复PVI为复发性AF患者提供了显著的临床益处.
- 为了持久的光伏隔离和长期的疗效,可能需要替代或改进的除技术.
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