谱分析确定了高频活动的部位,维持了人类的心房动
Prashanthan Sanders1, Omer Berenfeld, Mélèze Hocini
1Hôpital Cardiologique du Haut-Lévêque, Université Victor Segalen Bordeaux II, Bordeaux, France.
Circulation
|August 3, 2005
概括
确定心房动 (AF) 中的主导频率位置至关重要. 切除这些主导频率位延长了AF周期的长度,并终止了阳性AF,突出了它们在维持心律失常方面的作用.
科学领域:
- 电子生理学 电子生理学
- 心脏节律失常症 心脏节律失常症
- 医疗成像医学成像
背景情况:
- 人类心房动 (AF) 中的主导频率 (DF) 位点和废除的影响仍未得到充分研究.
- 以前的研究尚未确定这些高频激活点在AF维护中的作用.
研究的目的:
- 在人类心房动 (AF) 期间识别主导频率 (DF) 部位.
- 调查切除这些DF部位对AF维护和终止的影响.
主要方法:
- 电解剖学测绘用于获得AF切除术的32名患者的电图.
- 频谱分析确定了每个映射点的主导频率 (DF),创建3D DF地图.
- 切除术是盲目对DF图进行的,评估AF周期长度 (AFCL),终止和诱导性的变化.
主要成果:
- 在肺静脉 (肺静脉) 和永久性 (心房) AF之间,DF位点分布不同.
- 在DF部位的切除显著延长了AFCL (180±30到198±40毫秒) 和终止了AF在17/19名帕洛塞性AF患者中.
- 在切除DF部位时,AF终止发生在87%的患者身上,与持续AF病例相比,切除时间更短.
结论:
- 频谱分析和频率测绘有效地识别了具有明显空间分布的人类AF DF区域,在阳性和永久AF中.
- 已识别的DF部位的切除延长了AFCL,并终止了阳性AF,证实了它们在AF维护中的作用.
- 这些发现支持针对DF站点的有针对性的废除,以管理AF.
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