重新评估肝素在急性缺血性中风机械血栓切除过程中的作用:增加风险而没有功能益处
Seyed Behnam Jazayeri1, Sherief Ghozy2, Ram Saha3
1Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Radiology, Mayo Clinic, Rochester, MN, USA.
Clinical neurology and neurosurgery
|September 26, 2024
概括
在急性缺血性中风的机械血栓切除术期间服用肝素与更糟糕的结果和增加栓塞有关. 由于这些风险,在此过程中应重新考虑常规使用肝素.
科学领域:
- 神经学 神经学
- 干预性神经放射学 干预性神经放射学
- 临床试验 临床试验
背景情况:
- 机械血栓切除术 (MT) 是由于大血管封闭 (AIS-LVO) 的急性缺血性中风的关键治疗方法.
- 由于风险/收益平衡不确定,在MT期间肝素的作用仍然存在争议.
- 这项研究系统地审查了肝素在AIS-LVO MT中的安全性和有效性.
研究的目的:
- 为了评估在AIS-LVO的MT中对肝素的施用的影响.
- 评估肝素对功能结果,再注血和并发症率的影响.
- 在AIS-LVO MT中提供基于证据的关于肝素使用的建议.
主要方法:
- 对AIS-LVO在MT期间使用肝素的研究进行系统审查和元分析.
- 在PubMed,Embase和Scopus数据库中进行了搜索.
- 用于元分析的随机效应模型,并对异质性的子组分析.
主要成果:
- 肝素使用与较低的有利功能结果率 (mRS 0-2) 有关.
- 在接受肝素治疗的患者中观察到远端栓塞的风险增加.
- 亚组分析显示,在接受IVT和肝素治疗的患者中,症状性内出血 (symptomatic intracranial hemorrhage,简称SICH) 较高,结果更差.
结论:
- 在AIS-LVO的MT期间服用肝素与较差的临床结果和增加的远端栓塞相关.
- 在接受静脉输血栓溶解 (IVT) 的患者中,肝素使用会增加SICH的风险.
- 在AIS-LVO的MT期间常规使用肝素需要重新考虑.
相关概念视频
Anticoagulant Drugs: Low-Molecular-Weight Heparins
649
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...
649
Venous Thrombosis III: Interprofessional Care
3
Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
3
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care
3
Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...
3
Extrinsic and Intrinsic Pathways of Hemostasis
6.4K
Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
6.4K
Clot Retraction and Fibrinolysis
4.8K
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.
4.8K
Venous Thrombosis I: Introduction
3
Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...
3


