wwwepilepsydiagnosisorg httpswwwepilepsydiagnosisorg New terms for seizure descriptors Epilepsy syndromes From wwwepilepsydiagnosisorg Developed from ILAE position paper on classification of epilepsies and ID: 909384
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Slide1
EEG by Age
Describing EEG by Epilepsy Syndromes, EEG patterns, EEG descriptors
Slide2www.epilepsydiagnosis.org
https://www.epilepsydiagnosis.org/
Slide3New terms for seizure descriptors
Slide4Epilepsy syndromes
From:
www.epilepsydiagnosis.org
Developed from: ILAE position paper on classification of epilepsies and
ILAE position paper on classification of seizure types
Slide5Slide6Slide7Theta
pointu
alterntant
: runs of theta activity intermixed with sharp waves, alternates sides, wake & sleep states; does not change to stimuli; occurs in neonatal seizures
Slide8Neonates & pediatrics
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by Unknown Author is licensed under
CC BY-NC-ND
Slide9Neonates & pediatrics
Slide10acns
Documentation of patient’s postmenstrual age (PMA= gestational age, measured from the time of the last menstrual period + chronological age) at the time of recording.
a) Preterm = 24-34 weeks PMA
b) Near term = 34-37
c) Term = 37 up to 44 weeks PMA
d) Post term = 44 to 48 weeks PMA
https://www.acns.org/pdf/guidelines/Guideline-16.pdf
Slide11Definition of PMA per AAP
https://pediatrics.aappublications.org/content/pediatrics/114/5/1362.full.pdf
Slide12extrinsic effects on neonate eeg
Slide13Visual analysis of neonatal eeg
Traditionally, neonatal EEGs were performed on paper EEG writers, and a consensus regarding paper speed was not established. Recording speed often was chosen to be half the speed of the typical adult record (
ie
, 15 mm/s instead of 30 mm/s).
Detection of asymmetries or asynchronies may be enhanced by slow speed. This becomes less of an issue as digital EEG acquisition and review allows for
postrecording
change of the time base of the recording. Review at different speeds is available, when necessary. Unfortunately, waveform morphology is different in records that are recorded at different paper speeds. At 15 mm/second, sharp waves and spikes are half the width in the EEG record and look sharper. Sharp waves and spikes must stand out from the background, be sharply contoured, and be 70-200 milliseconds (
ms
) and 20-70
ms
in duration, respectively.
Slide14Visual analysis of neonatal eeg
A 5-step process should be performed when analyzing a neonatal EEG. The 5 steps consist of the following:
Knowledge of the postconceptional age and topography of the infant's head
Identification of artifacts in the EEG
Identification of sleep and wake states
Feature extraction
Classification of the record as normal or abnormal and the clinical correlation provided to the clinician
Slide15Visual analysis of neonatal eeg
Slide16Visual analysis of neonatal eeg
Slide17Visual analysis of neonatal eeg
Slide18Visual analysis of neonatal eeg
https://emedicine.medscape.com/article/1139599-overview#a3
Author: Samuel
Koszer
, MD
Additional authors: Solomon Moshe, MD, Gregory Holmes, MD, Andrew Blum, MD
Slide19Neonatal eeg
Britton JW, Frey LC,
Hopp
JLet
al., authors; St. Louis EK, Frey LC, editors.
Chicago:
American Epilepsy Society
; 2016.
https://www.ncbi.nlm.nih.gov/books/NBK390356/
Slide20Neonatal eeg
Slide21Neonatal eeg
Slide22Neonate eeg features
Slide23Neonatal epilepsies
Slide24Pediatric eeg
Slide25Pediatric eeg
Sources for information:
Electroencephalography: (EEG): An Introductory Text and Atlas of Normal and Abnormal
Fainding
in Adults, Children and Infants; Erick St. Louis MD, Lauren C Frey, MD
There are no specific guidelines for EEG descriptions on pediatric EEG; only neonates and CC EEG.
Slide26Pediatric EEG
Slide27Childhood epilepsy syndromes
Slide28Pediatric eeg
Slide29Slide30Slide31Slide32Slide33Adolescents & Adults
Sources: Electroencephalography (EEG):
Slide34Adolescent/adult epilepsies
Slide35Slide36Slide37Adolescent/adult eeg
Slide38Any age epilepsies
Slide39Slide40Epilepsy by etiology
Slide41Slide42Genetic
Slide43structural
Slide44Structural etiology types
Slide45Structural etiology types part 2
Slide46Slide47Slide48Medications
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by Unknown Author is licensed under
CC BY
Slide49medications
Slide50Medications
Slide51Medications part 2
Slide52Medications pt 3
Slide53Medications part 4
Slide54Medications part 5
Slide55Medications part 6
Slide56Medications part 7
Slide57Medications part 8