Chapter 4: Epileptiform Activity, Seizures and Epilepsy Syndromes
نویسنده
چکیده
Identification of interictal epileptiform activity (IEA), seizures and the specific EEG patterns that accompany epilepsy syndromes remains an electroencephalographer’s most critical task. Fortunately, IEA and seizures are also often easily distinguished and stand out in sharp contrast from background EEG frequencies. This chapter will focus on providing practical guidance in recognizing these patterns and understanding their significance in clinical application.
منابع مشابه
Epileptic Encephalopathy Syndromes in Infancy
A diagnostic scheme for people with epileptic seizures and with epilepsy proposed by ILAE Commission (2001) (Engel, Jr. et al, 2001) newly adopted the concept of “epileptic encephalopathy” as one of new key terms. It is defined as a condition in which epileptiform abnormalities are believed to contribute to the progressive disturbance in cerebral function, but this definition may be ambiguous. ...
متن کاملOptimizing electroencephalographic studies for epilepsy diagnosis in children with new-onset seizures.
OBJECTIVES To establish whether early electroencephalography (EEG) or later sleep-deprived EEG (SD-EEG) has a higher yield of epileptiform and background abnormalities in children with new-onset seizures, and to use EEG results to assist in diagnosis of electroclinical epilepsy syndromes at presentation. DESIGN Prospective analysis blinded to EEG protocol and epilepsy diagnosis. SETTING Reg...
متن کاملElectroencephalography in the Diagnosis of Genetic Generalized Epilepsy Syndromes
Genetic generalized epilepsy (GGE) consists of several syndromes diagnosed and classified on the basis of clinical features and electroencephalographic (EEG) abnormalities. The main EEG feature of GGE is bilateral, synchronous, symmetric, and generalized spike-wave complex. Other classic EEG abnormalities are polyspikes, epileptiform K-complexes and sleep spindles, polyspike-wave discharges, oc...
متن کامل[Idiopathic generalised epilepsy. The value of semiology and EEG scanning in its classification].
INTRODUCTION The different syndromes included in the idiopathic generalized epilepsies present an important overlapping of their electroclinical characteristics. AIM To compare the two actual classifications (International classification of epileptic syndromes: ILAE of 1989 and of 2001) in a sample of patients with idiopathic generalised epilepsy (IGE) and to evaluate which electro-clinical f...
متن کاملDoes hyperventilation elicit epileptic seizures?
PURPOSE Voluntary hyperventilation has been advocated for many decades as an "activating" procedure to provoke clinical seizures and epileptiform discharges in subjects with suspected epilepsy who undergo standard EEG recordings. This study was undertaken to determine the effects of hyperventilation in patients with proven epilepsy. METHODS We examined the records of 433 consecutive patients ...
متن کامل