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Related Concept Videos

Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

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...
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...
Ischemic Heart Disease: Overview01:17

Ischemic Heart Disease: Overview

Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and narrowing...
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...
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...

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Updated: Jun 25, 2026

Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats
07:56

Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats

Published on: April 21, 2017

Advances in perinatal ischemic stroke.

Adam Kirton1, Gabrielle deVeber

  • 1Division of Neurology, Alberta Children's Hospital, Calgary, Alberta, Canada. adam.kirton@calgaryhealthregion.ca

Pediatric Neurology
|February 17, 2009
PubMed
Summary
This summary is machine-generated.

Fetal and perinatal brain injury patterns are better understood, aiding in identifying causes and improving outcomes for perinatal stroke. Further research is crucial for effective interventions and better prediction of adverse effects.

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The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia
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The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia

Published on: November 19, 2008

Related Experiment Videos

Last Updated: Jun 25, 2026

Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats
07:56

Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats

Published on: April 21, 2017

The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia
08:47

The Hypoxic Ischemic Encephalopathy Model of Perinatal Ischemia

Published on: November 19, 2008

Area of Science:

  • Neurology
  • Pediatrics
  • Neonatology

Background:

  • Distinct patterns of focal ischemic injury in the fetal and perinatal brain are increasingly recognized.
  • Advances in classification improve understanding of risk factors, pathophysiology, and outcomes.
  • Perinatal stroke, caused by cerebrovascular occlusion, presents diverse characteristics (arterial/venous, symptomatic/subclinical) across various time frames.

Purpose of the Study:

  • To review current understandings of perinatal ischemic stroke.
  • To highlight recent advancements in the field.
  • To outline future research directions.

Main Methods:

  • Review of current literature on fetal and perinatal brain injury.
  • Analysis of classification systems for ischemic stroke.
  • Synthesis of research on risk factors, pathogenesis, and outcomes.

Main Results:

  • Improved classification aids in identifying risk factors and predicting outcomes.
  • Understanding the diverse nature of perinatal stroke (arterial/venous, symptomatic/subclinical) is crucial.
  • Distinguishing causative factors from associations remains a significant challenge.

Conclusions:

  • Enhanced classification of perinatal ischemic stroke facilitates research into pathogenesis and intervention.
  • Further research is essential due to the adverse outcomes experienced by most affected children.
  • Future directions include refining diagnostic criteria and exploring novel therapeutic strategies.