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相关概念视频

Regulation of Stroke Volume01:27

Regulation of Stroke Volume

The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation01:21

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
Peripheral Artery Disease IV: Nursing Management01:26

Peripheral Artery Disease IV: Nursing Management

The nursing management of a patient with peripheral artery disease (PAD) begins with a thorough assessment of the patient’s health history and clinical manifestations.AssessmentHealth History: Evaluate the patient’s history of hypertension, hyperlipidemia, family history of cardiovascular issues, and lifestyle factors such as dietary patterns, smoking, and physical activity.Physical Examination:Assess the affected extremity for decreased or absent peripheral pulses, temperature changes,...
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...

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相关实验视频

Updated: May 10, 2026

Non-invasive Assessment of Microvascular and Endothelial Function
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脑中风中的外周血管功能:系统审查和元分析.

Bria L Bartsch1,2, Emily M Hazen2, Robert N Montgomery3

  • 1Department of Physical Therapy, Rehabilitation Science, and Athletic Training, University of Kansas Medical Center, Kansas City, Kansas, United States.

Journal of applied physiology (Bethesda, Md. : 1985)
|March 14, 2024
PubMed
概括

通过流媒扩张 (FMD) 测量的外周血管功能障碍在中风恢复期间持续存在,增加了未来心血管事件的风险. 这一审查证实了所有中风阶段的口炎受损,强调了血管健康干预的必要性.

关键词:
动脉硬性 动脉硬性脑血管疾病的意外发生.通过流介导的扩张.血管健康 血管健康

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A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology
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Last Updated: May 10, 2026

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科学领域:

  • 心血管科学 心血管科学
  • 神经学 神经学
  • 血管生物学 血管生物学

背景情况:

  • 通过流媒扩张 (FMD) 量化的外周血管功能障碍是心血管事件的已知危险因素.
  • 在各种心血管疾病中观察到口炎损伤,但其在中风恢复阶段的轨迹需要详细的描述.

研究的目的:

  • 系统地审查和元分析个人中风后的FMD基线值.
  • 通过急性,亚急性和慢性中风恢复阶段来表征口病.
  • 调查年龄和中风后的时间对口病的影响.

主要方法:

  • 在PubMed,CINAHL和Embase数据库中进行了系统的搜索,搜索2000年1月1日至2023年10月12日期间发表的研究.
  • 三位审查员进行了研究选择,数据提取和质量评估.
  • 随机效应模型被用于元分析,元回归检查年龄和时间的中风后效应.

主要成果:

  • 包括包括缺血性和出血性中风的28项研究.
  • 研究中平均估计的口病为3.9% (95% CI: 2.5-5.3%),具有显著的异质性 (I2 = 99.6%).
  • 无论是平均年龄还是中风后的时间都与口病值没有显著的相关性.

结论:

  • 周围血管功能障碍,指的是受损的口病,在中风恢复的所有阶段都存在.
  • 这种持续的血管功能障碍强调了针对血管健康的干预措施的迫切需要,以改善结果并预防复发性中风.
  • 这些发现强调了口病作为评估中风后血管健康的相关生物标志物.