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Blood Flow01:29

Blood Flow

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Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.
78.5K
Blood Transfusion and Agglutination02:45

Blood Transfusion and Agglutination

15.7K
Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
15.7K
Blood Typing01:10

Blood Typing

4.2K
Understanding an individual's blood group is a critical component of transfusion medicine. It ensures compatibility in blood transfusions, organ transplants, and even during pregnancy. Determining these blood groups involves the ABO and Rh blood typing systems, utilizing specific antigens and corresponding anti-sera to identify an individual's blood type.
Antigens are protein molecules that reside on the surface of red blood cells (RBCs). The ABO and Rh blood typing systems target...
4.2K
Blood Transfusion01:15

Blood Transfusion

3.0K
Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
Blood Transfusion Overview
A blood transfusion is a medical procedure used to replace blood lost due to injury, surgery, or to treat conditions such as anemia or cancer. During a transfusion, donor blood is...
3.0K
Hemodialysis I: Introduction01:25

Hemodialysis I: Introduction

3.2K
Hemodialysis (HD) is a medical treatment that artificially removes waste products, excess fluids, and toxins from the blood when the kidneys are no longer able to perform these functions effectively. In this process, blood is filtered through a semipermeable membrane, allowing for the selective removal of waste while preserving necessary components like blood cells and proteins. Hemodialysis is typically performed in patients with end-stage renal disease (ESRD) or severe kidney...
3.2K

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相关实验视频

Updated: Apr 3, 2026

Ex Situ Normothermic Machine Perfusion of Donor Livers
12:13

Ex Situ Normothermic Machine Perfusion of Donor Livers

Published on: May 26, 2015

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人工血液的人工血液.

Jerry E Squires1

  • 1American Red Cross Biomedical Services, Arlington, VA 22307, USA. squiresj@usa.redcross.org

Science (New York, N.Y.)
|February 9, 2002
PubMed
概括
此摘要是机器生成的。

血液替代品正在开发中,作为在紧急情况和手术期间输血的捐献血液的替代品. 这些创新的血替代品的第一代目前正在进行临床试验.

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Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro
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科学领域:

  • 生物医学工程 生物医学工程
  • 血液学 血液学 血液学
  • 紧急医疗 紧急医疗

背景情况:

  • 捐献者血液短缺在医疗环境中带来了重大挑战.
  • 对人体输血的安全有效替代品的需求至关重要.
  • 生物技术的进步使得人造血替代品的开发成为可能.

研究的目的:

  • 总结血液替代品的发展状况.
  • 突出其在输血医学中的潜在应用.
  • 为第一代血替代品正在进行的临床试验提供信息.

主要方法:

  • 审查当前的血液替代技术的研究和开发.
  • 对第一代产品的临床试验数据的分析.
  • 评估对输血药物的潜在影响.

主要成果:

  • 第一代血替代品已经进入临床试验阶段.
  • 这些替代品在紧急和选择性输血使用方面显示出前景.
  • 目前正在进行进一步的研究以优化疗效和安全性.

结论:

  • 血液替代品代表了输血医学的重大进步.
  • 临床试验是验证其使用的关键一步.
  • 广泛应用可以减轻对捐献者血液的依赖.