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Related Concept Videos

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

Ischemic Stroke l: Introduction

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.
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

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...
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

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...
Stroke: Introduction and Types01:29

Stroke: Introduction and Types

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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Updated: Jun 20, 2026

Establishment of Acute Pontine Infarction in Rats by Electrical Stimulation
05:02

Establishment of Acute Pontine Infarction in Rats by Electrical Stimulation

Published on: August 27, 2020

Progressive stroke in pontine infarction.

V Saia, L Pantoni

    Acta Neurologica Scandinavica
    |September 23, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Isolated pontine infarctions may stem from basilar artery branch disease. Lesion extension on the pons surface might indicate this, potentially correlating with neurological worsening.

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    Area of Science:

    • Neurology
    • Vascular Neurology
    • Neuroimaging

    Background:

    • The exact causes of isolated pontine infarctions remain uncertain, with theories pointing to small or large vessel diseases.
    • Surface extension of pontine infarcts has been suggested as a potential indicator of basilar branch atheromatous disease.

    Discussion:

    • A literature review supports the link between basilar artery branch disease and isolated pontine infarction.
    • Enlargement of pontine lesions appears to correlate with a poorer neurological outcome.

    Key Insights:

    • Basilar artery branch disease is associated with isolated pontine infarction.
    • Pontine lesion size may predict neurological decline.
    • Further research into progression mechanisms is warranted.

    Outlook:

    • Prospective studies are needed to identify predictors of neurological worsening in pontine stroke.
    • Advanced neuroimaging techniques are crucial for a better understanding of isolated pontine infarction pathogenesis.