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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

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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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Ischemic Stroke l: Introduction01:15

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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

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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...
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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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Principles of Pharmacogenetics: Types of Genetic Variants01:27

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The human genome is over 99.9% identical between individuals, yet genetic differences exist at millions of bases. The human genome contains approximately 3 million variant positions per individual, many of which are heterozygous, contributing to genetic diversity and individual traits. Genetic variations include single-nucleotide polymorphisms (SNPs), insertions, deletions, and copy number variations (CNVs).SNPs, the most common variation, involve single-base changes in DNA. These can be...
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Genetic stroke syndromes.

Kevin M Barrett, James F Meschia

    Continuum (Minneapolis, Minn.)
    |April 5, 2014
    PubMed
    Summary
    This summary is machine-generated.

    Monogenic disorders can cause stroke, impacting diagnosis and prognosis. Early identification of these genetic causes is crucial for effective treatment and improved patient outcomes.

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    Area of Science:

    • Neurology
    • Genetics
    • Medical Research

    Background:

    • Stroke is a significant clinical manifestation of various inherited disorders.
    • Understanding the genetic basis of stroke is critical for accurate diagnosis and prognosis.
    • Recent genetic studies have identified specific mutations linked to inherited stroke syndromes.

    Purpose of the Study:

    • To review the clinical and radiographic features of monogenic disorders associated with stroke.
    • To explore the genetic determinants underlying these inherited stroke conditions.
    • To outline current and emerging treatment options for monogenic stroke disorders.

    Main Methods:

    • Literature review of well-characterized monogenic disorders causing stroke.
    • Analysis of clinical and radiographic presentations.
    • Examination of genetic findings and mutation discoveries.
    • Synthesis of treatment strategies.

    Main Results:

    • Stroke is a recognized phenotype in numerous clinically significant inherited disorders.
    • Clinical recognition of these genetic disorders aids in diagnosis and prognosis.
    • Discovery of specific mutations has advanced understanding of inherited stroke syndrome phenotypes.

    Conclusions:

    • Several inherited causes of stroke have identified and effective therapies.
    • Timely diagnosis of genetic stroke disorders is essential for initiating appropriate treatment.
    • Further research into genetic determinants can improve management of stroke patients.