在严重的大动脉狭窄症中神经血管合
Ana Ovsenik1,2, Matej Podbregar3,4, Nikola Lakič5
1Faculty of Medicine, Department of Biomedicine, University of Ljubljana, Ljubljana, Slovenia.
Brain and behavior
|July 21, 2023
概括
患有严重大动脉狭窄症 (AS) 的患者表现出神经血管合受损,由视觉唤起的大脑血流速度响应 (VEFR) 的较高表示. 这种失调可能会导致AS患者的认知能力下降.
科学领域:
- 心血管医学 心血管医学
- 神经学 神经学
- 医疗成像医学成像
背景情况:
- 大动脉狭窄 (AS) 阻碍左心室外流,可能损害大脑输液.
- 在AS中的血液动力学变化可能会破坏大脑血流调节.
- 了解AS中神经血管合对于评估认知功能至关重要.
研究的目的:
- 在患有严重大动脉狭窄症的患者中评估神经血管合.
- 为了研究AS中脑血流调节机制,使用跨骨多普勒超声波.
主要方法:
- 在脑后动脉中评估视觉唤起的大脑血流速度响应 (VEFR).
- 分析了54名严重AS患者和43名对照者的缩性峰值,平均值和终端腹缩性VEFR.
- 利用10个周期的视觉刺激和重复测量ANOVA进行数据比较.
主要成果:
- 与对照组 (10.5% ± 4.5%; p = .009) 相比,严重的AS患者表现出明显更高的缩峰值VEFR (12.9% ± 5.6%).
- 与对照组 (12.2% ± 4.9%; p = .021) 相比,AS患者的平均VEFR也显著升高 (14.4% ± 5.8%).
- 在AS患者中观察到更高的末端透析VEFR趋势 (p = .061).
结论:
- 这项研究首次证明,严重AS患者的神经血管合失调,由VEFR升高证明.
- 损坏的神经血管合可能是导致大动脉狭窄症患者认知能力下降的一个因素.
- 跨骨多普勒超声波是评估AS中大脑血液动力学的宝贵工具.
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