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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...
Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

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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...
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Ischemic Stroke ll: Pathophysiology01:15

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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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Continuous Renal Replacement Therapy, also known as CRRT, is a procedural treatment for acute kidney injury (AKI) that gradually removes uremic toxins and fluids while maintaining acid-base balance and stabilizing electrolytes. It is particularly useful for hemodynamically unstable patients. Unlike intermittent hemodialysis, which is faster, CRRT provides a gentler approach over 24 hours, closely mimicking the function of natural kidneys. However, CRRT is not ideal for patients with...
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Related Experiment Video

Updated: Apr 19, 2026

Permanent Cerebral Vessel Occlusion via Double Ligature and Transection
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[Reversible cerebral vasoconstriction syndrome].

Elina Laakso1, Johanna Pekkola, Lauri Soinne

  • 1HYKS - neurologia klinikka.

Duodecim; Laaketieteellinen Aikakauskirja
|January 7, 2015
PubMed
Summary

Reversible cerebral vasoconstriction syndrome (RCVS) is a condition causing temporary brain artery narrowing. It often presents as severe headache, particularly in middle-aged women, and may lead to serious complications.

Area of Science:

  • Neurology
  • Vascular Neurology
  • Neuroimaging

Context:

  • Reversible cerebral vasoconstriction syndrome (RCVS) is increasingly recognized as a cause of acute neurological dysfunction.
  • Characterized by multifocal vasoconstriction in cerebral arteries, RCVS presents with sudden, severe headaches.
  • RCVS predominantly affects middle-aged women and is often associated with specific triggers.

Purpose:

  • To provide an overview of the clinical characteristics, complications, and predisposing factors of Reversible cerebral vasoconstriction syndrome.
  • To highlight the diagnostic features and potential sequelae of RCVS.
  • To underscore the current lack of evidence-based treatment guidelines for RCVS.

Summary:

  • RCVS involves temporary narrowing of brain arteries, leading to severe, sudden headaches.

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  • Complications can include stroke, bleeding in the brain, and seizures.
  • Common triggers include vasoactive substances and the postpartum period, with no established evidence-based treatments.

    • Impact:

    • Increased awareness of RCVS aids in timely diagnosis and management.
    • Understanding RCVS pathophysiology can guide future research into effective treatments.
    • Recognizing predisposing factors may help in preventing RCVS recurrence.