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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...
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...
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...
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...
Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...

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Related Experiment Video

Updated: Jun 2, 2026

Induction of Acute Ischemic Stroke in Mice Using the Distal Middle Artery Occlusion Technique
07:34

Induction of Acute Ischemic Stroke in Mice Using the Distal Middle Artery Occlusion Technique

Published on: December 15, 2023

Making a case for acute ischemic stroke.

Kathleen A Baldwin1, Stacey L McCoy

  • 1Department of Neurology, Baptist Medical Center, Jacksonville, FL 32207, USA. Kathleen.baldwin@bmcjax.com

Journal of Pharmacy Practice
|April 22, 2011
PubMed
Summary
This summary is machine-generated.

Recognizing acute ischemic stroke (AIS) symptoms quickly is vital for effective treatment. New guidelines expand the time window for intravenous recombinant tissue plasminogen activator (IV rt-PA) therapy to 4.5 hours for eligible patients.

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Related Experiment Videos

Last Updated: Jun 2, 2026

Induction of Acute Ischemic Stroke in Mice Using the Distal Middle Artery Occlusion Technique
07:34

Induction of Acute Ischemic Stroke in Mice Using the Distal Middle Artery Occlusion Technique

Published on: December 15, 2023

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

Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
09:21

Optimized Management of Endovascular Treatment for Acute Ischemic Stroke

Published on: January 18, 2018

Area of Science:

  • Neurology
  • Emergency Medicine
  • Public Health

Background:

  • Stroke is a leading cause of death and adult disability in the US.
  • Prompt recognition and treatment of acute ischemic stroke (AIS) are critical due to time-sensitive interventions.
  • AIS can lead to severe long-term disabilities, including motor deficits, communication impairments, and dependence.

Purpose of the Study:

  • To review risk factors, symptoms, epidemiology, and current drug therapies for AIS.
  • To discuss the importance of immediate recognition and emergency medical services (EMS) activation.
  • To highlight updated treatment guidelines for reperfusion therapy.

Main Methods:

  • Review of current literature and clinical guidelines on AIS management.
  • Discussion of time-sensitive treatment options, including intravenous recombinant tissue plasminogen activator (IV rt-PA).
  • Emphasis on supportive care measures such as fluid management, oxygenation, and fever avoidance.

Main Results:

  • The time window for IV rt-PA administration has been extended to 4.5 hours post-symptom onset for mild to moderate AIS.
  • Early recognition and EMS activation significantly reduce delays in diagnosis and treatment.
  • Supportive therapies are crucial for optimizing outcomes and preventing secondary complications.

Conclusions:

  • Timely intervention with IV rt-PA, following expanded guidelines, can improve outcomes for AIS patients.
  • Comprehensive stroke care involves rapid assessment, appropriate therapy, and diligent supportive management.
  • Continued research and adherence to updated standards of care are essential for reducing stroke's impact.