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Related Concept Videos

Seizures l: Introduction01:20

Seizures l: Introduction

42
Understanding seizures and epilepsy relies on key definitions that help in recognizing, classifying, and managing these disorders. These definitions provide a framework for recognizing, classifying, and managing seizure disorders.DefinitionsA seizure is a sudden, abnormal burst of electrical activity in the brain that can cause changes in awareness, movement, sensation, or behavior, depending on the area involved. Epilepsy is a chronic condition characterized by recurrent, unprovoked seizures,...
42
Seizures ll: Types01:19

Seizures ll: Types

36
Seizures are sudden bursts of abnormal electrical discharge in the brain that interfere with normal function. They are commonly divided into three groups: focal seizures, generalized seizures, and other types that do not fit neatly into either category.Focal SeizuresFocal seizures begin in a single brain region. When awareness is preserved, they are called focal aware seizures and may cause sensations such as tingling, unusual smells, or flashing lights. When awareness is impaired, they are...
36
Seizures: Classification01:13

Seizures: Classification

2.5K
Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
2.5K
Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

1.7K
Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
1.7K
Stroke: Introduction and Types01:29

Stroke: Introduction and Types

55
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...
55
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

54
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...
54

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Related Experiment Video

Updated: May 2, 2026

Generation and On-Demand Initiation of Acute Ictal Activity in Rodent and Human Tissue
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Seizures in the acute stroke setting.

Jeffrey M Chung

    Neurological Research
    |March 20, 2014
    PubMed
    Summary

    Early detection and treatment of seizures after stroke are crucial. Continuous EEG monitoring helps identify subtle seizures, potentially improving patient outcomes and reducing mortality.

    Area of Science:

    • Neurology
    • Epileptology
    • Critical Care Medicine

    Background:

    • Stroke is a major cause of disability and epilepsy, particularly in older adults.
    • Early seizures post-stroke (within 24 hours) correlate with increased mortality, suggesting significant neuronal damage.
    • Subtle electrographic seizures and non-convulsive status epilepticus (NCSE) often go undetected without specialized monitoring.

    Purpose of the Study:

    • To highlight the incidence and implications of early seizures following acute stroke.
    • To emphasize the diagnostic utility of continuous electroencephalogram (cEEG) monitoring for identifying electrographic seizures.
    • To discuss treatment strategies for early post-stroke seizures and their potential impact on outcomes.

    Main Methods:

    • Review of existing literature on stroke-related epilepsy and seizure management.
    Keywords:
    Acute stroke,EEGSeizures,

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  • Discussion of the role of continuous electroencephalogram (cEEG) in detecting subclinical seizures.
  • Analysis of the significance of epileptiform patterns on EEG in predicting seizure development.

    • Main Results:

    • Early seizures occur in 3-33% of acute stroke patients, with a high proportion within 24 hours.
    • Electrographic seizures and specific EEG patterns are associated with increased mortality and risk of early seizures.
    • Continuous EEG monitoring facilitates earlier identification and treatment of seizures.

    Conclusions:

    • Prompt recognition and management of both clinical and electrographic seizures are vital for mitigating secondary brain injury and improving stroke recovery.
    • Continuous EEG monitoring is essential for detecting non-convulsive seizures, which may otherwise be missed.
    • Emerging anti-epileptic treatments show promise in controlling early post-stroke seizures and potentially enhancing patient outcomes.