在鼻节律期间心房动中心房血静止升高:一种患者特定的计算流体动力学研究
Sophia Bäck1,2, Iulia Skoda3, Jonas Lantz1,2
1Unit of Cardiovascular Sciences, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.
Frontiers in cardiovascular medicine
|August 31, 2023
概括
患有心房 (AF) 的患者在左心房血停滞增加,即使在鼻节奏期间. 计算流体动力学表明,这种静止与弹射率和体积比率有关,突出显示了中风风险.
科学领域:
- 心血管研究研究心血管研究
- 医疗成像医学成像
- 计算流体动力学的流体动力学.
背景情况:
- 心房动 (AF) 增加了中风的风险,原因是左心房 (LA) 和左心房附属体 (LAA) 中形成的血栓.
- 在LAA中血液静止是可疑的原因,但由于解剖学约束,很难测量.
- 了解AF患者的血液流动动态对于评估中风风险至关重要.
研究的目的:
- 为了比较血流和静止在左心室的阳性AF患者与对照.
- 利用计算流体动力学 (CFD) 来对LA和LAA的血液流量进行患者特异性分析.
- 为了确定与AF患者血停滞相关的因素.
主要方法:
- 在CFD模拟中使用时间解析计算机断层扫描和患者特定的心脏运动.
- 分析了来自21名阳性AF患者和8名对照对象的数据.
- 通过计算血液在左前庭内停留时间来量化血液静止.
主要成果:
- 血液停留时间,表明静止,在AF组显著增加 (p < 0.001).
- 静止与LA射出比率 (R2 = 0.68) 和LA体积与左心室中风体积 (R2 = 0.81) 的比率有很强的相关性.
- 在AF患者中,即使在鼻节律期间,也可能存在LA血栓引起的中风风险升高.
结论:
- 血停滞是心房的患者的一个重要因素,即使在鼻节律.
- CFD模拟为评估LAA血流和静止提供了强大的工具.
- 针对患者的CFD分析有可能改善中风风险评估和指导AF治疗.
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