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Related Concept Videos

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.
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...
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...
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...
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...

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Related Experiment Video

Updated: Jun 12, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
06:01

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia

Published on: August 18, 2015

Acute ischemic stroke and infections.

Catalina C Ionita1, Adnan H Siddiqui1, Elad I Levy2

  • 1Department of Neurosurgery, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, New York; Department of Neurosurgery, Millard Fillmore Gates Hospital, Kaleida Health, Buffalo, New York.

Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association
|June 12, 2010
PubMed
Summary
This summary is machine-generated.

Infections can trigger acute ischemic stroke by accelerating atherosclerosis. Poststroke infections worsen outcomes, but prompt treatment is recommended, though antibiotic prophylaxis is not standard care.

Related Experiment Videos

Last Updated: Jun 12, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
06:01

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia

Published on: August 18, 2015

Area of Science:

  • Neurology
  • Infectious Diseases
  • Immunology

Background:

  • Infections are increasingly recognized as triggers for acute ischemic stroke.
  • Stroke can impair immune function, leading to common and dangerous poststroke infections.
  • Understanding the interplay between infection and stroke is crucial for patient outcomes.

Purpose of the Study:

  • To provide an overview of infections associated with acute ischemic stroke.
  • To discuss the therapeutic options for managing these conditions.
  • To highlight the impact of stroke on immune response and subsequent infections.

Main Methods:

  • Literature review of infections causing stroke.
  • Analysis of pathophysiologic mechanisms linking infection and stroke.
  • Review of current guidelines and antibiotic trials for poststroke infections.

Main Results:

  • Infections like endocarditis and HIV can directly cause stroke.
  • Infections accelerate atherosclerosis and cause immunohematologic alterations, leading to ischemic stroke.
  • Poststroke infections are common, worsen outcomes, and are linked to stroke-induced immunodepression.

Conclusions:

  • Prompt treatment of infections in stroke patients is supported by guidelines.
  • While antibiotic prophylaxis is not standard, managing infections is vital for improving stroke outcomes.
  • Further research into antibiotic trials for poststroke infection prevention is warranted.