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Related Concept Videos

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...
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 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...

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Related Experiment Video

Updated: Jun 27, 2026

Modeling Intracerebral Hemorrhage in Mice: Injection of Autologous Blood or Bacterial Collagenase
10:44

Modeling Intracerebral Hemorrhage in Mice: Injection of Autologous Blood or Bacterial Collagenase

Published on: September 22, 2012

[Intrachiasmal hematoma].

Iu A Grigorian, A R Sitnikov

    Zhurnal Voprosy Neirokhirurgii Imeni N. N. Burdenko
    |December 10, 2008
    PubMed
    Summary

    This case report details a rare instance of chiasmal apoplexy, a type of intrachiasmal hemorrhage, causing progressive vision loss. Surgical intervention via a pterional approach was successful in preserving vision.

    Area of Science:

    • Neuro-ophthalmology
    • Neurosurgery
    • Radiology

    Background:

    • Chiasmal apoplexy is a rare cause of sudden visual loss.
    • Intrachiasmal hemorrhage can present with visual field defects.

    Observation:

    • A 41-year-old female presented with progressive bitemporal hemianopia.
    • MRI revealed a T1WI and T2WI hyperintensive lesion within the optic chiasm, suggestive of hemorrhage.

    Findings:

    • Characteristic MRI and CT findings confirmed intrachiasmal hemorrhage.
    • Surgical intervention via a pterional approach was performed.

    Implications:

    • Minimally invasive surgery may reduce the risk of postoperative visual deterioration.
    • This case highlights diagnostic and management strategies for intrachiasmal hemorrhages.

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    Published on: July 3, 2014

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