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Stroke: Introduction and Types

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: Introduction

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: Pathophysiology

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: Introduction

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.

Transient Ischemic Attack l: Introduction

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...

Ischemic Stroke ll: Pathophysiology

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...

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Related Experiment Video

Updated: Apr 18, 2026

Modeling Stroke in Mice: Focal Cortical Lesions by Photothrombosis

Modeling Stroke in Mice: Focal Cortical Lesions by Photothrombosis

Published on: May 6, 2021

Recurrent stroke: what have we learnt?

K Rabia¹, Em Khoo²

¹MMed(FamMed).

Malaysian Family Physician : the Official Journal of the Academy of Family Physicians of Malaysia

|January 22, 2015

Summary

Recurrent stroke poses a significant risk, increasing disability and mortality. Early identification of high-risk patients and integrated rehabilitation are crucial for managing stroke recurrence and improving patient outcomes.

Area of Science:

Neurology
Cardiovascular Medicine
Rehabilitation Medicine

Background:

Stroke is a leading cause of death and adult disability, with increasing rates of recurrence due to improved survival and aging populations.
Identifying patients at high risk for recurrent stroke is critical for timely intervention and secondary prevention strategies.
Cerebral infarction and subsequent cardiovascular events necessitate a focus on long-term patient management and risk stratification.

Observation:

This case report details a recurrent stroke in a 42-year-old male, highlighting the associated disabilities and morbidities.
The patient experienced significant functional impairments following the recurrent cerebrovascular event.
The progression of neurological deficits and the impact on daily living were documented.

Findings:

Keywords:

Stroke prevention rehabilitation

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Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model

Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model

Published on: August 11, 2023

Modeling Stroke in Mice: Permanent Coagulation of the Distal Middle Cerebral Artery

Modeling Stroke in Mice: Permanent Coagulation of the Distal Middle Cerebral Artery

Published on: July 31, 2014

Related Experiment Videos

Last Updated: Apr 18, 2026

Modeling Stroke in Mice: Focal Cortical Lesions by Photothrombosis

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Published on: May 6, 2021

Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model

Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model

Published on: August 11, 2023

Modeling Stroke in Mice: Permanent Coagulation of the Distal Middle Cerebral Artery

Modeling Stroke in Mice: Permanent Coagulation of the Distal Middle Cerebral Artery

Published on: July 31, 2014

The case illustrates the complex challenges in managing recurrent stroke, including neurological deficits and long-term health consequences.
The patient's experience underscores the need for comprehensive assessment and personalized treatment plans.
Recurrent cerebrovascular events can lead to severe and persistent disability.

Implications:

Integrated stroke rehabilitation programs are essential for optimizing recovery and minimizing long-term disability in recurrent stroke patients.
Early and sustained rehabilitation interventions can improve functional independence and quality of life.
This case highlights the importance of multidisciplinary care in managing the sequelae of recurrent stroke.