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Related Concept Videos

Seizures l: Introduction01:20

Seizures l: Introduction

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,...
Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

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...
Seizures: Classification01:13

Seizures: Classification

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:
Seizures ll: Types01:19

Seizures ll: Types

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...
Epilepsy ll: Types01:22

Epilepsy ll: Types

Recurrent seizures, stemming from abnormal electrical activity in the brain, are the defining characteristic of epilepsy, a chronic neurological condition. Because seizure features vary greatly, epilepsy is classified using two systems: by seizure type and by epilepsy syndromes. These classifications enable clinicians to describe seizure patterns and select suitable treatment strategies.I. Classification by Seizure Type1. Focal EpilepsyFocal epilepsy begins in one hemisphere of the brain.
Electroconvulsive Therapy01:30

Electroconvulsive Therapy

Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early years,...

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Sudden unexpected death in epilepsy.

Susan Duncan1, Martin J Brodie

  • 1Edinburgh and South East Scotland Epilepsy Service, Department of Clinical Neurosciences, Western General Hospital, Edinburgh, Scotland, UK. susan.duncan4@nhs.net

Epilepsy & Behavior : E&B
|June 14, 2011
PubMed
Summary
This summary is machine-generated.

Sudden unexpected death in epilepsy (SUDEP) is the leading cause of epilepsy-related death. Optimizing seizure control is the most effective method for SUDEP prevention.

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Simultaneous Video-EEG-ECG Monitoring to Identify Neurocardiac Dysfunction in Mouse Models of Epilepsy
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Published on: January 29, 2018

Area of Science:

  • Neurology
  • Epileptology
  • Clinical Medicine

Background:

  • Sudden unexpected death in epilepsy (SUDEP) is the most frequent cause of mortality directly linked to epilepsy.
  • Incidence varies (0.09-9 per 1000 patient-years) based on population and study methods.
  • SUDEP typically occurs during or shortly after a seizure.

Purpose of the Study:

  • To review the incidence, risk factors, and potential mechanisms of SUDEP.
  • To emphasize strategies for SUDEP prevention.

Main Methods:

  • Review of existing literature on SUDEP incidence and risk factors.
  • Analysis of proposed pathophysiological mechanisms.
  • Discussion of preventative strategies.

Main Results:

  • Poorly controlled generalized tonic-clonic seizures are the primary risk factor for SUDEP.
  • Additional risk factors include polytherapy, male sex, early epilepsy onset, symptomatic etiology, and possibly lamotrigine treatment.
  • Mechanisms may involve autonomic dysfunction, central apnea, cerebral depression, and cardiac arrhythmias.

Conclusions:

  • Optimizing seizure control, including surgical evaluation, is crucial for SUDEP prevention.
  • Educating patients about SUDEP risks and the importance of seizure control is essential.
  • Complete seizure control is the only proven method to prevent SUDEP.