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Related Concept Videos

Stroke: Introduction and Types01:29

Stroke: Introduction and Types

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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...
7
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

6
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...
6
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

5
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...
5
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

4
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...
4
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

7
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.
7
Regulation of Stroke Volume01:27

Regulation of Stroke Volume

8.2K
The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
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Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats
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Current concepts in pediatric stroke.

Andrea Andrade1, Ivanna Yau, Mahendranath Moharir

  • 1Division of Neurology, Department of Pediatrics, University of Toronto and the Hospital for Sick Children, Toronto, Canada.

Indian Journal of Pediatrics
|November 23, 2014
PubMed
Summary
This summary is machine-generated.

Pediatric stroke, particularly arterial ischemic stroke (AIS), is a significant cause of childhood illness and death. Understanding its diverse causes is key to early diagnosis and treatment.

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Area of Science:

  • Pediatric neurology
  • Vascular neurology
  • Pediatric critical care

Background:

  • Stroke in children is uncommon but serious, leading to significant short- and long-term health issues.
  • Pediatric stroke encompasses arterial ischemic stroke (AIS), hemorrhagic stroke (HS), and cerebral sinovenous thrombosis (CSVT).
  • This review specifically examines arterial ischemic stroke (AIS) in the pediatric population.

Purpose of the Study:

  • To review the diverse etiologies of pediatric arterial ischemic stroke (AIS).
  • To highlight the differences in causes between pediatric AIS and adult stroke.
  • To emphasize the importance of early recognition and prompt therapy for pediatric AIS.

Main Methods:

  • Literature review focusing on pediatric arterial ischemic stroke (AIS).
  • Analysis of etiological factors in pediatric AIS.
  • Comparison of pediatric AIS causes with those in adult stroke.

Main Results:

  • Pediatric AIS etiologies are varied and distinct from adult stroke.
  • Key causes include congenital heart disease, vasculopathies, hematological disorders, and prothrombotic states.
  • Age, ethnicity, and geographic location may also influence pediatric AIS.

Conclusions:

  • Early identification of pediatric AIS is crucial for timely intervention.
  • Prompt therapeutic measures can reduce the risk of recurrence and complications.
  • Recognizing the unique etiological landscape of pediatric AIS is essential for effective management.