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Related Concept Videos

Introduction to Hemostasis01:05

Introduction to Hemostasis

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Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized,...
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Vascular Spasm01:16

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The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
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Related Experiment Video

Updated: Aug 2, 2025

A Mouse Model of Hemorrhagic Transformation Induced by Acute Hyperglycemia Combined with Transient Focal Ischemia
09:35

A Mouse Model of Hemorrhagic Transformation Induced by Acute Hyperglycemia Combined with Transient Focal Ischemia

Published on: November 15, 2024

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Hemorrhagic Conversion of Acute Ischemic Stroke.

Adeel S Zubair1, Kevin N Sheth2,3

  • 1Department of Neurology, Yale School of Medicine, New Haven, CT, USA. Adeel.zubair@yale.edu.

Neurotherapeutics : the Journal of the American Society for Experimental Neurotherapeutics
|April 21, 2023
PubMed
Summary

Hemorrhagic transformation is a serious complication of acute ischemic stroke, often occurring after treatments like thrombectomy or thrombolysis. Understanding its causes, risks, and management is crucial for improving patient outcomes.

Keywords:
Acute strokeHemorrhagic conversionIschemic strokeThrombectomy

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Area of Science:

  • Neurology
  • Vascular Medicine
  • Medical Imaging

Background:

  • Stroke is a major global health concern, causing significant morbidity and mortality.
  • Hemorrhagic transformation (HT) is a severe complication following acute ischemic stroke.
  • Standard treatments for acute ischemic stroke, including endovascular thrombectomy and thrombolytic therapy, increase the risk of HT.

Purpose of the Study:

  • To provide a comprehensive overview of hemorrhagic transformation in acute ischemic stroke.
  • To discuss the underlying pathophysiology, identify key risk factors, and review diagnostic imaging considerations.
  • To outline current treatment strategies for patients experiencing hemorrhagic transformation.

Main Methods:

  • Literature review focusing on pathophysiology, risk factors, imaging, and treatment of hemorrhagic transformation.
  • Synthesis of current evidence regarding the diagnosis and management of post-stroke hemorrhage.
  • Analysis of the impact of endovascular thrombectomy and thrombolytic therapy on hemorrhagic conversion.

Main Results:

  • Hemorrhagic transformation is a significant risk associated with reperfusion therapies for ischemic stroke.
  • Early diagnosis through advanced imaging techniques is vital for effective management.
  • Risk factors for HT include stroke severity, anticoagulation, and specific patient characteristics.

Conclusions:

  • Timely diagnosis and management of hemorrhagic transformation are critical for mitigating adverse patient outcomes.
  • Further research is needed to refine risk prediction and optimize treatment protocols.
  • This review highlights the importance of a multidisciplinary approach in managing patients with hemorrhagic stroke complications.