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相关概念视频

Sleep Apnea01:21

Sleep Apnea

198
Sleep apnea is a condition where breathing stops intermittently during sleep, often leading to significant health issues. Each episode can last from 10 to 20 seconds or more and is frequently accompanied by a brief arousal from sleep. This disturbance, largely unnoticed by the individual, can lead to severe daytime fatigue. Commonly, individuals seek help after being informed by their partners about loud snoring and noticeable breathing pauses during sleep.
The condition is more prevalent among...
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Arteries of the Head and Neck01:26

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The human body's intricate network of arteries ensures that every organ system receives the necessary oxygen and nutrients for optimal function. The arterial network in the head and neck region is particularly complex, providing vital blood flow to the brain, eyes, and other critical structures. Prominent arteries in this region include the internal carotid arteries and the vertebral arteries.
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
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相关实验视频

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A Model to Simulate Clinically Relevant Hypoxia in Humans
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阻塞性睡眠呼吸暂停如何改变大脑血液动力学?

Clara Gregori-Pla1, Peyman Zirak1, Gianluca Cotta1

  • 1ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, Av. Carl Friedrich Gauss, 3, Castelldefels (Barcelona), 08860, Spain.

Sleep
|June 19, 2023
PubMed
概括
此摘要是机器生成的。

阻塞性睡眠呼吸暂停事件导致大脑血流和氧化量的显著周期性变化. 事件的持续时间和类型 (呼吸暂停与呼吸暂停) 强烈影响这些大脑血液动力学反应.

关键词:
大脑血液动力学扩散相关性光谱学扩散相关性光谱学接近红外光谱学近红外光谱学阻塞性睡眠呼吸暂停症是什么睡眠障碍 睡眠障碍是一种睡眠障碍.

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科学领域:

  • 神经学 神经学
  • 睡眠医学 睡眠医学
  • 心血管生理学心血管生理学

背景情况:

  • 阻塞性睡眠呼吸暂停 (obstructive sleep apnea,简称OSA) 是一种在睡眠期间重复出现呼吸道阻塞的疾病.
  • 了解OSA对大脑血液动力学的影响对于评估其整体严重程度至关重要.
  • 传统的多睡眠学可能无法完全捕捉OSA患者神经性损害的程度.

研究的目的:

  • 描述大脑对阻塞性睡眠呼吸暂停/睡眠暂停事件的血液动力反应.
  • 评估这些血液动力学变化与多睡眠学参数之间的关联.
  • 为了解OSA严重程度提供补充信息.

主要方法:

  • 研究了16名在夜间多睡眠记录过程中严重的OSA患者.
  • 使用床边扩散相关谱学 (DCS) 和近红外扩散相关谱学 (NIRS-DOS) 来监测前皮层中的微血管大脑血液动力学.
  • 分析了脑血流 (CBF),总血红蛋白度 (THC) 和脑血氧和度 (StO2) 的变化.

主要成果:

  • 在3283次阻塞性呼吸暂停/呼吸暂停事件中观察到CBF,THC和StO2的双相反应.
  • StO2的变化反映了SpO2的动态,而CBF和THC的变化则脱离了相位.
  • 较长时间的事件与更大的CBF变化,更快的反应和更慢的恢复相关;呼吸暂停引起的反应比呼吸暂停更为极端.

结论:

  • 阻塞性呼吸暂停/呼吸暂停会导致大脑血液动力学发生显著的周期性变化,包括间歇性高/低输液和缺氧.
  • 事件持续时间是决定大脑血液动力学反应大小的一个关键因素.
  • 大脑血液动力学反应在呼吸暂停期间比在呼吸暂停期间更为明显.