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Related Concept Videos

Stroke: Introduction and Types01:29

Stroke: Introduction and Types

55
A stroke is an acute neurological event caused by the sudden disruption of cerebral blood flow, leading to rapid loss of neuronal function. Neurons depend on continuous oxygen and glucose supply, so even brief interruptions can cause irreversible injury within minutes. Strokes are classified into ischemic and hemorrhagic types.Ischemic StrokeIschemic strokes are most common and occur due to arterial occlusion, depriving brain tissue of oxygen and nutrients. This leads to energy failure, ionic...
55
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

18
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...
18
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

44
Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
44
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

54
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...
54
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

20
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...
20
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

30
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...
30

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Related Experiment Video

Updated: May 1, 2026

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Stroke and nonstroke brain attacks in children.

Mark T Mackay1, Zhi Kai Chua, Michelle Lee

  • 1From the Department of Neurology (M.T.M.) and Emergency Department (Z.K.C., M.L., F.E.B.), Royal Children's Hospital Melbourne, Parkville; Murdoch Childrens Research Institute (M.T.M., F.E.B.), Parkville; Florey Institute of Neurosciences and Mental Health (M.T.M., L.C., G.A.D.), Parkville; University of Melbourne (M.T.M., Z.K.C., M.L., L.C., P.M., G.A.D., F.E.B.), Parkville, Australia; and Hospital Nacional de Ninos (A.Y.-C.), San Jose, Costa Rica.

Neurology
|March 25, 2014
PubMed
Summary
This summary is machine-generated.

Pediatric brain attacks present differently than in adults, with stroke being less common. Understanding these unique symptoms and causes is key to developing effective emergency department care pathways for children.

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Area of Science:

  • Pediatric Neurology
  • Emergency Medicine
  • Clinical Pathway Development

Background:

  • Brain attacks in children, defined as abrupt-onset focal brain dysfunction, require specific diagnostic and management strategies.
  • Existing research often focuses on adult populations, necessitating a clearer understanding of pediatric presentations.

Purpose of the Study:

  • To characterize the symptoms, signs, and etiologies of brain attacks in children presenting to the emergency department.
  • To establish a foundation for creating a specialized pediatric brain attack clinical pathway.

Main Methods:

  • A prospective observational study was conducted on 287 children (1 month to 18 years) experiencing brain attacks.
  • Exclusion criteria included epilepsy, hydrocephalus, head trauma, and isolated headache.
  • Etiology was determined through clinical data, neuroimaging (CT, MRI), and other investigations, with comparisons to adult studies via meta-analysis.

Main Results:

  • Common symptoms included headache, vomiting, focal weakness, and seizures; common signs included focal weakness and ataxia.
  • Neuroimaging revealed abnormalities in 27% of CT scans and 62% of MRI scans.
  • The most frequent diagnoses were migraine (28%), seizures (15%), Bell palsy (10%), stroke (7%), and conversion disorders (6%), differing significantly from adult proportions.

Conclusions:

  • The etiological profile of pediatric brain attacks differs substantially from that observed in adults.
  • Stroke was the fourth most common diagnosis in children, highlighting a key difference from adult populations.
  • These findings are crucial for informing the development of evidence-based emergency department clinical pathways for pediatric brain attacks.