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Related Concept Videos

Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
Stroke: Introduction and Types01:29

Stroke: Introduction and Types

A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
The Arch of Aorta01:10

The Arch of Aorta

The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
Encircling the heart, the coronary arteries form a ring-like structure before...

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Updated: Jun 10, 2026

Transient Middle Cerebral Artery Occlusion Model of Stroke
05:32

Transient Middle Cerebral Artery Occlusion Model of Stroke

Published on: August 11, 2023

Recurrent stroke after cervical artery dissection.

Christian Weimar1, Klaus Kraywinkel, Christoph Hagemeister

  • 1Department of Neurology, University of Duisburg-Essen, Essen, Germany. stroke.med@uni-essen.de

Journal of Neurology, Neurosurgery, and Psychiatry
|August 5, 2010
PubMed
Summary
This summary is machine-generated.

Cervical artery dissection (CAD) poses a high risk for recurrent stroke in young adults. Anticoagulation may offer better secondary prevention than antiplatelets, warranting further randomized trials.

Related Experiment Videos

Last Updated: Jun 10, 2026

Transient Middle Cerebral Artery Occlusion Model of Stroke
05:32

Transient Middle Cerebral Artery Occlusion Model of Stroke

Published on: August 11, 2023

Area of Science:

  • Neurology
  • Vascular Medicine
  • Stroke Research

Background:

  • Cervical artery dissection (CAD) is a significant cause of stroke in young adults, accounting for 10-20% of cases.
  • Current secondary prevention strategies lack robust evidence from randomized controlled trials.
  • Limited prospective data exists on the prognosis and optimal management of patients with CAD.

Purpose of the Study:

  • To investigate the prognosis of patients with ischaemic stroke or transient ischaemic attack (TIA) secondary to CAD.
  • To evaluate the effectiveness of different secondary prevention regimens, including anticoagulation and antiplatelet therapy.
  • To identify risk factors and outcomes associated with recurrent events in CAD patients.

Main Methods:

  • A prospective observational study involving 250 patients with acute ischaemic stroke or TIA due to CAD from 30 German neurology departments.
  • Centralized follow-up of 198 patients for a median of 31 months to assess recurrent stroke, recurrent CAD, and mortality.
  • Comparison of outcomes between patients treated with anticoagulants and those treated with antiplatelets.

Main Results:

  • Cervical artery dissection occurred more frequently in carotid arteries (52.0%) than vertebral arteries (46.8%).
  • The in-hospital recurrent stroke rate was 5.2%. Cumulative recurrent stroke rates were 10.7% at 1 year and 14.0% at 3 years.
  • Patients treated with anticoagulants had a significantly lower rate of recurrent stroke within 6 months post-discharge (2.0%) compared to those on antiplatelets (16.7%) (HR 0.11, p=0.02).

Conclusions:

  • This study highlights the substantial risk of early recurrent stroke after acute ischaemic stroke or TIA caused by CAD.
  • Anticoagulation therapy appears to be associated with a lower risk of recurrent stroke compared to antiplatelet therapy in the short term.
  • Randomized controlled trials are essential to definitively determine the optimal secondary prevention strategy for CAD.