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Transient Ischemic Attack l: Introduction01:26

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A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
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穿透导管大动脉植入后微血管组织和的暂时降低

Manuel Stern1, Sven Baasen1, Patricia Wischmann1

  • 1Department of Cardiology, Pulmonology and Vascular Medicine, Medical Faculty, Heinrich-Heine University, Duesseldorf, Germany.

Clinical hemorheology and microcirculation
|June 29, 2024
PubMed
概括
此摘要是机器生成的。

通过导管的大动脉植入 (TAVI) 暂时降低了外围微血管组织和度 (StO2). 这种微循环变化与功能有关,并且在术后恢复到基线.

关键词:
微循环是一种微循环.微血管组织和度接近红外光谱学近红外光谱学穿过导管的大动脉植入装置.

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科学领域:

  • 心血管医学 心血管医学
  • 医疗器械 医疗器械
  • 微循环研究 微循环研究

背景情况:

  • 有限的数据存在于跨导管大动脉植入 (TAVI) 对外周微循环的影响.
  • 周围微血管组织和度 (StO2) 是组织 perfusion 的一个关键指标.

研究的目的:

  • 在TAVI前后评估外周微血管组织和 (StO2) 的变化.
  • 为了将StO2的变化与中央/外围血液动力学,心脏功能和功能相关联.

主要方法:

  • 一项前性单中心研究,将TAVI患者与心脏导管控制组进行比较.
  • 评估心脏输出 (心声学),血压,动脉硬性,以及StO2 (近红外光谱学).
  • 通过手术前和后的肌素水平监测功能.

主要成果:

  • TAVI显著增加了心脏输出,但降低了周围的StO2和血液动力学参数.
  • 随访时,周围的StO2水平恢复到基线.
  • 在TAVI后降低的StO2与肌素水平升高负相关,表明功能受损.

结论:

  • 穿过导管的大动脉植入诱导微血管组织和的短暂减少.
  • 这种微循环效应与接受TAVI治疗的患者的功能状况有关.