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Related Concept Videos

Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...
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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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Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins with...

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Related Experiment Video

Updated: May 30, 2026

Continuous IV Infusion is the Choice Treatment Route for Arginine-vasopressin Receptor Blocker Conivaptan in Mice to Study Stroke-evoked Brain Edema
08:44

Continuous IV Infusion is the Choice Treatment Route for Arginine-vasopressin Receptor Blocker Conivaptan in Mice to Study Stroke-evoked Brain Edema

Published on: September 1, 2016

Reversible cerebral vasoconstriction syndrome: current and future perspectives.

Shih-Pin Chen1, Jong-Ling Fuh, Shuu-Jiun Wang

  • 1Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.

Expert Review of Neurotherapeutics
|August 26, 2011
PubMed
Summary

Reversible cerebral vasoconstriction syndromes (RCVS) cause sudden, severe thunderclap headaches due to brain artery narrowing. This review covers RCVS definitions, causes, and future research directions.

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Last Updated: May 30, 2026

Continuous IV Infusion is the Choice Treatment Route for Arginine-vasopressin Receptor Blocker Conivaptan in Mice to Study Stroke-evoked Brain Edema
08:44

Continuous IV Infusion is the Choice Treatment Route for Arginine-vasopressin Receptor Blocker Conivaptan in Mice to Study Stroke-evoked Brain Edema

Published on: September 1, 2016

Area of Science:

  • Neurology
  • Vascular Neurology

Background:

  • Reversible cerebral vasoconstriction syndromes (RCVS) present with thunderclap headaches and multifocal vasoconstriction.
  • Understanding RCVS is crucial for accurate diagnosis and management.

Purpose of the Study:

  • To comprehensively review definitions, clinical presentations, risk factors, and complications of RCVS.
  • To detail the relationship between RCVS and thunderclap headaches.
  • To explore pathophysiology and therapeutic strategies for RCVS.

Main Methods:

  • Literature review of milestone monographs and recent research on RCVS.
  • Analysis of studies focusing on RCVS and thunderclap headaches.
  • Inclusion of current research on pathophysiology and treatments.

Main Results:

  • RCVS is defined by recurrent severe headaches and segmental cerebral artery narrowing.
  • Thunderclap headache is a key clinical feature of RCVS.
  • Pathophysiology remains enigmatic, with ongoing research into potential treatments.

Conclusions:

  • RCVS requires thorough understanding of its diverse presentations and risk factors.
  • Further research is needed to elucidate RCVS pathophysiology and optimize therapeutic interventions.
  • Future studies will address current challenges and advance RCVS management.