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相关概念视频

Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

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Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
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Coagulation01:09

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The coagulation phase is a critical part of the body's process to prevent blood loss following injury to blood vessels. It involves chemical reactions that form a clot to seal the injured area. The clotting process begins shortly after injury, within 15-20 seconds for severe damage and 1-2 minutes for minor injuries.
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
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相关实验视频

Updated: Sep 9, 2025

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
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Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay

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液体等离子体与解等离子体:在储存期间跟踪凝血因子活动变化

Nalan Yurtsever, Catherine Gereg, Nichelle Perera

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    概括
    此摘要是机器生成的。

    液体血 (LQP) 的保质期比解血 (TP) 的保质期更长. LQP显示了关键凝血因子的可比水平,使其成为关键护理场景的可行替代方案.

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    相关实验视频

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    科学领域:

    • 输血医学
    • 血液学
    • 生物化学

    背景情况:

    • 液体血 (LQP) 提供了一个更长的保质期替代解血 (TP) 的新兴输血.
    • 评估LQP凝血因子的稳定性和活性对于其临床应用至关重要.

    研究的目的:

    • 在LQP中测量纤维素,蛋白C,蛋白S,FV,FVII和FVIII活性.
    • 量化存储期间LQP中的这些因素水平的变化.
    • 将LQP因子活动与TP进行比较.

    主要方法:

    • 在第15天,第26天和第27天测量了凝血因子活动的LQP (n=26),在第5天测量了TP (n=24).
    • 用贝叶斯统计模型来比较因子活动并评估与存储相关的变化.

    主要成果:

    • 在第26天 (LQP26) 的纤维素和蛋白C活性与第5天 (TP5) 的TP相当.
    • 与TP5相比,LQP26中的FV,FVII和FVIII活动略低.
    • 在LQP26中,蛋白S活性明显低于TP5 (64. 9%).
    • 从第15天到第26天,FVII活动下降,而其他因素保持稳定.

    结论:

    • 除了较低的蛋白S水平,LQP与紧急使用的TP具有相似的纤维素,蛋白C,FV,FVII和FVIII活性.
    • 由于其延长的保质期和充足的因子水平,LQP是紧急输血和大规模输血方案的可行替代方案.