Related Experiment Video

Updated: May 26, 2026

Measuring Post-Stroke Cerebral Edema, Infarct Zone and Blood-Brain Barrier Breakdown in a Single Set of Rodent Brain Samples
04:32

Measuring Post-Stroke Cerebral Edema, Infarct Zone and Blood-Brain Barrier Breakdown in a Single Set of Rodent Brain Samples

Published on: October 23, 2020

The severity of ischemia determines and predicts malignant brain edema in patients with large middle cerebral artery

Christian Dohmen1, Norbert Galldiks, Bert Bosche

  • 1Max Planck Institute for Neurological Research, University of Cologne, Cologne, Germany. christian.dohmen@uk-koeln.de

Cerebrovascular Diseases (Basel, Switzerland)
|December 7, 2011
PubMed
Abstract

Insights

Severe ischemia, not total hypoperfusion, predicts malignant edema in middle cerebral artery (MCA) infarction. Assessing severely ischemic areas accurately predicts edema and may guide treatment selection for stroke patients.

Area of Science:

  • Neurology
  • Neuroimaging
  • Stroke Medicine

Background:

  • Investigated the impact of ischemia severity on malignant edema formation in large middle cerebral artery (MCA) infarction.
  • Utilized (11)C-flumazenil Positron Emission Tomography (PET) to assess varying degrees of perfusional deficit.

Purpose of the Study:

  • To determine the relationship between the severity of ischemia and malignant edema formation.
  • To evaluate the predictive value of different hypoperfusion volumes for edema development in MCA stroke.

Main Methods:

  • Included 17 patients with large MCA stroke, measuring cerebral blood flow (CBF) hours after ictus.
  • Categorized patients into malignant (n=9) and benign (n=8) groups based on clinical course and edema.
  • Quantified edema via maximal midline shift on CT scans and analyzed hypoperfusion subvolumes based on CBF reduction.

Main Results:

  • Subvolumes of severe ischemia were significantly larger in the malignant group and correlated strongly with edema.
  • Severely ischemic subvolumes demonstrated 100% sensitivity and specificity in predicting edema formation.
  • Predictive accuracy decreased for less severe hypoperfusion, highlighting risks of using total deficit volume alone.

Conclusions:

  • Malignant MCA infarction is primarily determined by the volume of severe, not total, perfusional deficit.
  • Assessing severely ischemic areas enables prediction of malignant edema.
  • This assessment may aid in selecting stroke patients who could benefit from hemicraniectomy.

More Related Videos

Focal Cerebral Ischemia Model by Endovascular Suture Occlusion of the Middle Cerebral Artery in the Rat13:50

Focal Cerebral Ischemia Model by Endovascular Suture Occlusion of the Middle Cerebral Artery in the Rat

Published on: February 5, 2011

Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats07:56

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

Published on: April 21, 2017

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...
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...
Cytotoxic Edema: Pathophysiology01:21

Cytotoxic Edema: Pathophysiology

Cytotoxic edema is a form of cerebral edema characterized by intracellular swelling of neurons, astrocytes, and other glial cells. It develops when the mechanisms responsible for maintaining ionic gradients across the cell membrane become impaired. Under normal physiological conditions, the sodium–potassium ATPase actively transports sodium ions out of the cell and potassium ions into the cell, preserving osmotic balance and enabling electrical signaling. This pump requires a continuous supply...
Cerebral Edema l: Introduction01:19

Cerebral Edema l: Introduction

Cerebral edema is a pathological increase in brain water content that disrupts intracranial pressure regulation and impairs neurological function. Because the cranial vault is rigid, even modest increases in tissue volume can compromise cerebral perfusion, distort neural structures, and initiate secondary injury. Cerebral edema develops through four principal mechanisms: vasogenic, cytotoxic, interstitial, and ionic.Vasogenic EdemaVasogenic edema arises from disruption of the blood–brain...
Increased Intracranial Pressure ll: Pathophysiology01:29

Increased Intracranial Pressure ll: Pathophysiology

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...
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...