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Related Concept Videos

Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

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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...
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Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

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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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Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

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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...
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Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

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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.
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Stroke: Introduction and Types01:29

Stroke: Introduction and Types

8
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...
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Regulation of Stroke Volume01:27

Regulation of Stroke Volume

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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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Related Experiment Video

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Performing Permanent Distal Middle Cerebral with Common Carotid Artery Occlusion in Aged Rats to Study Cortical Ischemia with Sustained Disability
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Migraine and stroke: "vascular" comorbidity.

Donata Guidetti1, Eugenia Rota1, Nicola Morelli1

  • 1Neurology Unit, Guglielmo da Saliceto Hospital , Piacenza , Italy.

Frontiers in Neurology
|October 24, 2014
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Summary

Migraine, particularly migraine with aura, is linked to increased stroke risk, especially in young adults. While common vascular risks aren't strongly associated, screening for these is advised in migraine patients.

Keywords:
cerebrovascular diseasehemorrhagic strokeischemic strokemigrainestrokevascular risk factors

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Area of Science:

  • Neurology
  • Vascular Medicine

Background:

  • Migraine is frequently associated with various comorbidities.
  • A well-defined relationship exists between migraine and stroke, particularly ischemic stroke in migraine with aura (MA).

Purpose of the Study:

  • To explore the complex associations between migraine and cerebrovascular diseases.
  • To clarify the role of vascular risk factors and underlying mechanisms in migraineurs.

Main Methods:

  • Review of meta-analyses and observational studies on migraine and cerebrovascular events.
  • Analysis of the relationship between migraine, stroke, silent brain lesions, and patent foramen ovale (PFO).

Main Results:

  • Migraine with aura (MA) is strongly linked to ischemic stroke, especially in young females using oral contraceptives or smokers.
  • Increased frequency of silent white matter ischemic lesions observed in migraineurs, particularly in posterior circulation.
  • Association between migraine and hemorrhagic stroke, cardiovascular disease, and cervical artery dissection requires further investigation.

Conclusions:

  • Migraine, especially MA, is associated with an increased risk of cerebrovascular events.
  • The relationship between migraine and common vascular risk factors needs further clarification.
  • Clinical management should include screening MA patients for other vascular risk factors.