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Related Concept Videos

Stroke: Introduction and Types01:29

Stroke: Introduction and Types

55
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...
55
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

18
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...
18
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

54
An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
54
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

30
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...
30
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

20
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...
20
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

44
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.
44

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Related Experiment Video

Updated: May 3, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
06:01

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Stroke: More than a 'brain attack'.

Robert Teasell1, Norhayati Hussein, Andrew McClure

  • 1Lawson Health Research Institute, London, Ontario, Canada; St. Joseph's Health Care London, Parkwood Hospital, London, Ontario, Canada; Department of Physical Medicine & Rehabilitation, Western University, London, Ontario, Canada.

International Journal of Stroke : Official Journal of the International Stroke Society
|January 22, 2014
PubMed
Summary
This summary is machine-generated.

Stroke care needs a balanced approach, emphasizing rehabilitation alongside emergency vascular treatments. This ensures comprehensive support for stroke survivors, addressing both the

Keywords:
acute stroke therapyrehabilitationstrokestroke carethrombolysis‘brain attack’

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Area of Science:

  • Neurology
  • Rehabilitation Medicine
  • Public Health

Background:

  • Stroke is a critical event impacting survivors, families, and society.
  • Current stroke strategies prioritize emergency vascular care ('brain attack') and thrombolysis.
  • This focus has led to underestimating the impact of rehabilitation on stroke recovery.

Purpose of the Study:

  • To advocate for a paradigm shift in stroke care.
  • To promote a comprehensive and balanced approach integrating rehabilitation.
  • To address the needs of stroke survivors as both 'brain attack' and 'injured brain' patients.

Main Methods:

  • Literature review on stroke care strategies.
  • Analysis of current stroke system emphasis.
  • Synthesis of evidence on rehabilitation interventions.

Main Results:

  • Thrombolysis benefits a small patient subset.
  • Vast majority experience stroke-related impairments.
  • Rehabilitation's role in recovery is undervalued.

Conclusions:

  • Stroke care requires a revolution toward a balanced approach.
  • Integrating rehabilitation is crucial for comprehensive patient management.
  • Future stroke care should focus on promoting recovery through rehabilitation.