在PFA期间高密度单极上心电图的动态
Gerard Amorós-Figueras1, Sergi Casabella-Ramon2, Zoraida Moreno-Weidmann1
1Department of Cardiology, Hospital de la Santa Creu i Sant Pau, Institut d'Investigació Biomèdica Sant Pau (IIB SANT PAU), CIBERCV, Universitat Autònoma de Barcelona, Spain (G.A.-F., Z.M.-W., J.M.G.).
脉冲场切除 (PFA) 在不可逆电穿孔 (IRE) 和可逆电穿孔区域中产生明显的电图变化. 这些电图动态有助于在PFA后立即区分病变区域,有助于急性评估.
科学领域:
- 心血管切除技术的使用.
- 电子生理学 电子生理学
- 生物物理学的生物物理.
背景情况:
- 脉冲场切除 (PFA) 是一种使用不可逆电穿孔 (IRE) 的新型非热心脏切除方法.
- 了解可逆电穿孔区域的电图表行为,这些区域在经过剥离后恢复,至关重要.
- 在PFA后对不同电穿孔水平的反应中,局部电图的动态性并未得到很好的描述.
研究的目的:
- 在IRE和可逆电穿孔区域中,根据PFA描述电图动态.
- 为了研究IRE和可逆电穿孔区域在剥离后的电图行为之间的差异.
主要方法:
- 养猪经历了心上PFA和射频切除.
- 高密度电图被记录了60分钟后的剥离.
- 分析了与电孔水平相关的电图,并通过染色来评估损伤深度.
主要成果:
- PFA诱导了显著的电图变化,包括降低R/S振幅,ST段升高,并降低了dV/dt.
- 在初级病变区域之外观察到电图变化,并在IRE与可逆电穿孔区域之间显示出明显的模式.
- 与射频除病变相比,PFA病变的深度更大.
结论:
- 单极电图可以在PFA后30分钟内区分可逆电孔和IRE区域.
- 观察到的电图差异在30分钟后变得不那么明显.
- 这些发现支持电图的实用性,用于立即评估PFA损伤,并建议进一步研究.
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