在心脏病发作后心室的导电系统激活的特征使用波纹映射
George Katritsis1, Balrik Kailey1, Vishal Luther1
1Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom.
Heart rhythm
|January 29, 2024
概括
波动映射有效地描述了心脏病发作后心脏中心室导电系统. 患有左捆支部阻塞的患者表现出更多的导电系统突发,影响QRS持续时间.
科学领域:
- 电子生理学 电子生理学
- 心脏解剖学 心脏解剖学
- 医疗成像医学成像
背景情况:
- 室腔导电系统的三维 (3D) 映射提出了重大挑战.
- 准确的表征对于理解心脏电活动至关重要,尤其是心肌梗塞后的心脏活动.
研究的目的:
- 使用波纹映射来区分导电系统激活与相邻的心肌.
- 描述心脏病发作后左心室 (LV) 中的导电系统.
主要方法:
- 高密度映射 (PentaRay,CARTO) 在正常节律期间在接受心室动脉动脉切除术的患者中使用.
- 波动地图以1ms的增量进行分析,以识别Purkinje潜力并将其标记在3D几何上.
- 这一过程使心室导电系统的详细划分成为可能.
主要成果:
- 在大多数患者中发现了Purkinje潜力,特别是在左后 (LPF) 和左前 (LAF).
- 与LPF相比,LAF的时间更短,激活的时间也更短.
- 患有左捆分支阻塞 (LBBB) 的患者经常表现出与普尔金氏潜力相关的突发症,在LBBB期间观察到的整体突发症较少.
结论:
- 波动映射提供了心脏病发作后LV传导系统的详细电解剖学特征.
- 更广泛的QRS持续时间与较少的LV突破点与导电系统相关.
- 显著的大多数LBBB患者表现出LV从完整的导电系统中突破.
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