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Related Concept Videos

Secondary Spinal Cord Injury llI: Pathophysiology01:25

Secondary Spinal Cord Injury llI: Pathophysiology

Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...
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...
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...
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...
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...
The Arch of Aorta01:10

The Arch of Aorta

The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
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Related Experiment Video

Updated: Jun 14, 2026

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

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Published on: April 21, 2017

Neurological sequelae after cerebral anoxia.

A Peskine1, C Rosso, C Picq

  • 1AP-HP, Physical Medicine and Rehabilitation Unit, Pitié-Salpêtrière, Paris, France. anne.peskine@psl.aphp.fr

Brain Injury
|April 8, 2010
PubMed
Summary
This summary is machine-generated.

Cardiac arrest survivors often experience significant neurological impairment, particularly executive and behavioral deficits. This study confirms these impairments are predominant, impacting daily functioning and cognitive abilities.

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Last Updated: Jun 14, 2026

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08:32

Neurobehavioral Assessments in a Mouse Model of Neonatal Hypoxic-ischemic Brain Injury

Published on: November 24, 2017

Area of Science:

  • Neurology
  • Neurorehabilitation
  • Cognitive Science

Background:

  • Cardiac arrest frequently leads to anoxic brain injury, resulting in diverse neurological impairments.
  • Understanding the long-term consequences of cardiac arrest is crucial for effective patient management and rehabilitation.

Purpose of the Study:

  • To confirm the prevalence and nature of neurological disabilities following cardiac arrest.
  • To identify the predominant types of impairments, focusing on executive and behavioral deficits.

Main Methods:

  • A retrospective study design was employed.
  • Data were collected from patients admitted for neurological impairments post-cardiac arrest between 1995-2007.
  • Clinical and neuropsychological assessments were utilized.

Main Results:

  • Thirty patients (19 male, mean age 39.5) were analyzed, categorized by severe (14) and moderate (16) disability.
  • Severe disability group: no autonomy, dysexecutive syndrome, behavioral disorders, amnesia; 64% with motor deficits.
  • Moderate disability group: daily life autonomy but impaired complex functioning, executive and memory deficits, behavioral changes; no motor impairment.

Conclusions:

  • The study confirms executive, memory, and behavioral impairments are predominant after cardiac arrest.
  • The findings highlight the significant impact of these deficits on patient autonomy and functioning.
  • Further prospective studies are needed to establish prognostic factors.