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After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
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可挽救的时间窗口:急性缺血性中风开始后的组织时钟

Feifeng Liu1,2, Chushuang Chen3, Chen Chen1,2

  • 1Department of Neurology (F.L., Chen Chen, G.L., L.L.), Shanghai East Hospital, School of Medicine, Tongji University, China.

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概括

对急性缺血性中风的内血管治疗 (EVT) 在可挽救的时间窗口内是最有益的. 在此窗口之后启动EVT提供了有限的益处,并增加了出血风险,突出了时间敏感治疗的重要性.

关键词:
血腫 血腫 血腫 血腫内出血 内出血缺血性中风 中风perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion perfusion 这是一个非常重要的方法,它可以让一个人觉得自己是个好的人,而不是一个好的人,而是一个好的人.断层扫描 (tomography) 是一个非常重要的技术.

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科学领域:

  • 神经学 神经学
  • 干预性放射学 干预性放射学
  • 脑卒中医学 脑卒中医学

背景情况:

  • 可挽救的缺血组织是急性缺血中风内血管治疗 (EVT) 的首要目标.
  • 引入了"可挽救时间窗口"的新概念,以量化组织可挽救能力的动态过程.
  • 假设认为,在这个窗口之后进行的EVT会使患者的益处减少.

研究的目的:

  • 根据在急性缺血性中风患者中定义的可挽救时间窗口来评估内血管治疗 (EVT) 的疗效和安全性.
  • 通过倾向性得分匹配,比较接受EVT内部,外部和不接受EVT的患者之间的结果.

主要方法:

  • 一项回顾性多中心研究 (INSPIRE注册表) 包括1291名在发病6小时内患有大血管封闭性中风的患者.
  • 患者根据EVT时间相对于计算的可挽救时间窗口 (内,外,没有EVT) 进行分组.
  • 主要结果是良好的功能结果 (修改的兰金尺度0-2在3个月);倾向性得分匹配用于控制混因素.

主要成果:

  • 在可挽救时间窗口内的EVT显著改善了与没有EVT相比的功能结果 (48%与29%相比,或2.29) 没有增加出血风险.
  • 在可挽救时间窗口之外启动的EVT并没有改善功能结果 (32%对29%),并且与更高的偏膜性血液瘤风险相关 (17%对3%).

结论:

  • 估计可挽救的时间窗口对于优化急性缺血性中风中的EVT至关重要.
  • 在可挽回窗口内及时启动EVT与更好的功能结果和安全有关.
  • 延迟EVT超出可挽救时间窗口可能会否定治疗益处并增加并发症风险.