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相关概念视频

Assessment of the Cardiovascular System III: Palpation01:27

Assessment of the Cardiovascular System III: Palpation

159
Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above...
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Venous Return01:04

Venous Return

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The circulatory system plays a crucial role in ensuring the optimal functioning of the human body. One of its critical components is venous return - the process that completes the blood circulation cycle. This article will delve into the concept of venous return, how it works, and its significance to our health.
What is Venous Return?
Venous return refers to the rate at which blood flows back to the heart from the body's peripheral veins. It's an integral part of the circulatory system...
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Regulation of Stroke Volume01:27

Regulation of Stroke Volume

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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...
2.9K
Cardiac Output II: Effect of Stroke Volume on Cardiac Output01:22

Cardiac Output II: Effect of Stroke Volume on Cardiac Output

537
Cardiac output (CO), the amount of blood the heart pumps per minute, is a parameter in cardiovascular physiology determined by stroke volume and heart rate. Stroke volume, the amount of blood pushed from one of the ventricles per heartbeat, is influenced by preload, afterload, and contractility.
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...
537
Veins of Lower Limbs01:15

Veins of Lower Limbs

407
The human body consists of an intricate network of veins responsible for the crucial task of blood drainage from the lower limbs. These veins can be categorized into two main types: deep veins and superficial veins.
Formed by the union of the medial and lateral plantar veins, the posterior tibial vein, rising through the calf muscle, assimilates the fibular vein. The anterior tibial vein, a superior extension of the foot's dorsalis pedis vein, merges with the posterior tibial vein at the...
407
Veins of Upper Limbs01:17

Veins of Upper Limbs

363
The human circulatory system, a marvel of biological engineering, is a complex network of vessels that transport blood throughout the body. Among these, the veins responsible for carrying blood from the upper limbs are divided into two categories: deep and superficial.
The deep venous system is primarily composed of the ulnar and radial veins. The ulnar vein, which drains the fingers through the superficial palmar venous arches, and the radial vein, which serves the palms via the deep palmar...
363

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相关实验视频

Updated: May 16, 2025

A Murine Model of Hemodialysis Access-Related Hand Dysfunction
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手和中风后静脉回归:一项初步研究

Hiroyuki Hayashi1, Ayana Kato2,3, Naoki Tomiyama1

  • 1Faculty of Care and Rehabilitation, Seijoh University, Tokai, Japan.

NeuroRehabilitation
|May 14, 2025
PubMed
概括

手的静脉回归减少可能会导致中风后手. 这项研究测量了手和静脉流动,在中风幸存者中发现侧流动明显较低.

科学领域:

  • 神经学 神经学
  • 血管医学 血管医学
  • 康复 康复 康复 康复

背景情况:

  • 静脉堵塞是中风患者手的疑似原因之一.
  • 之前的研究并没有专门研究手的静脉回归减少.

研究的目的:

  • 调查中风患者静脉堵塞和手之间的关系.
  • 客观地测量手和静脉回归在和非的四肢.

主要方法:

  • 一项涉及首次中风患者手的横截面研究.
  • 使用体积计测量手;通过超声波评估腹静脉中的静脉流动.
  • 配对的t测试用于比较paretic和非paretic四肢之间的测量.

主要成果:

  • 该研究包括13名男性中风患者,平均年龄为69.3岁.
  • 在侧 (64.7毫升/分钟) 与非侧 (115.9毫升/分钟) 相比,在侧观察到明显较低的静脉流量.

结论:

  • 研究结果表明,静脉回归减少可能与中风幸存者的手有关.
  • 需要进一步的研究来探索受损静脉回归的机制和其他导致手的原因.
关键词:
尾静脉的尾静脉是指一个静脉.手的胀 手的胀半 半 半 半患者患者患者患者患者患者患者一次性中风中风中风中风中风在上肢的上端.

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