EEG normal variants: A prospective study using the SCORE system

Stephan Wüstenhagen; Daniella Terney; Elena Gardella; Pirgit Meritam Larsen; Connie Rømer; Harald Aurlien; Sándor Beniczky

doi:10.1016/j.cnp.2022.06.001

EEG normal variants: A prospective study using the SCORE system

Stephan Wüstenhagen, Daniella Terney, Elena Gardella, Pirgit Meritam Larsen, Connie Rømer, Harald Aurlien, Sándor Beniczky^*

^*Corresponding author af dette arbejde

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Publikation: Bidrag til tidsskrift › Artikel › Forskning › peer review

Abstract

Objective: To determine the prevalence and characteristics of normal variants in EEG recordings in a large cohort, and provide readers with typical examples of all normal variants for educational purposes.

Methods: Using the SCORE EEG system (Standardized Computer-Based Organized Reporting of EEG), we prospectively extracted EEG features in consecutive patients. In this dataset, we analyzed 3050 recordings from 2319 patients (mean age 38.5 years; range: 1-89 years).

Results: The distribution of the normal variants was as follows: sharp transients 19.21% (including wicket spikes), rhythmic temporal theta of drowsiness 6.03%, temporal slowing of the old 2.89%, slow fused transients 2.59%, 14-and 6-Hz bursts 1.83%, breach rhythm 1.25%, small sharp spikes 1.05%, 6-Hz spike and slow wave 0.69% and SREDA 0.03%.

Conclusions: The most prevalent normal variants are the sharp transients, which must not be over-read as epileptiform discharges.

Significance: EEG readers must be familiar with the normal variants to avoid misdiagnosis and misclassification of patients referred to clinical EEG recordings.

Originalsprog	Engelsk
Sider (fra-til)	183-200
Antal sider	18
Tidsskrift	Clinical Neurophysiology Practice
Vol/bind	7
DOI	https://doi.org/10.1016/j.cnp.2022.06.001
Status	Udgivet - 30 jun. 2022

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10.1016/j.cnp.2022.06.001

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title = "EEG normal variants: A prospective study using the SCORE system",

abstract = "Objective: To determine the prevalence and characteristics of normal variants in EEG recordings in a large cohort, and provide readers with typical examples of all normal variants for educational purposes.Methods: Using the SCORE EEG system (Standardized Computer-Based Organized Reporting of EEG), we prospectively extracted EEG features in consecutive patients. In this dataset, we analyzed 3050 recordings from 2319 patients (mean age 38.5 years; range: 1-89 years).Results: The distribution of the normal variants was as follows: sharp transients 19.21% (including wicket spikes), rhythmic temporal theta of drowsiness 6.03%, temporal slowing of the old 2.89%, slow fused transients 2.59%, 14-and 6-Hz bursts 1.83%, breach rhythm 1.25%, small sharp spikes 1.05%, 6-Hz spike and slow wave 0.69% and SREDA 0.03%.Conclusions: The most prevalent normal variants are the sharp transients, which must not be over-read as epileptiform discharges.Significance: EEG readers must be familiar with the normal variants to avoid misdiagnosis and misclassification of patients referred to clinical EEG recordings.",

author = "Stephan W{\"u}stenhagen and Daniella Terney and Elena Gardella and {Meritam Larsen}, Pirgit and Connie R{\o}mer and Harald Aurlien and S{\'a}ndor Beniczky",

note = "{\textcopyright} 2022 International Federation of Clinical Neurophysiology. Published by Elsevier B.V.",

year = "2022",

month = jun,

day = "30",

doi = "10.1016/j.cnp.2022.06.001",

language = "English",

volume = "7",

pages = "183--200",

journal = "Clinical Neurophysiology Practice",

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publisher = "Elsevier B.V.",

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T1 - EEG normal variants

T2 - A prospective study using the SCORE system

AU - Wüstenhagen, Stephan

AU - Terney, Daniella

AU - Gardella, Elena

AU - Meritam Larsen, Pirgit

AU - Rømer, Connie

AU - Aurlien, Harald

AU - Beniczky, Sándor

PY - 2022/6/30

Y1 - 2022/6/30

N2 - Objective: To determine the prevalence and characteristics of normal variants in EEG recordings in a large cohort, and provide readers with typical examples of all normal variants for educational purposes.Methods: Using the SCORE EEG system (Standardized Computer-Based Organized Reporting of EEG), we prospectively extracted EEG features in consecutive patients. In this dataset, we analyzed 3050 recordings from 2319 patients (mean age 38.5 years; range: 1-89 years).Results: The distribution of the normal variants was as follows: sharp transients 19.21% (including wicket spikes), rhythmic temporal theta of drowsiness 6.03%, temporal slowing of the old 2.89%, slow fused transients 2.59%, 14-and 6-Hz bursts 1.83%, breach rhythm 1.25%, small sharp spikes 1.05%, 6-Hz spike and slow wave 0.69% and SREDA 0.03%.Conclusions: The most prevalent normal variants are the sharp transients, which must not be over-read as epileptiform discharges.Significance: EEG readers must be familiar with the normal variants to avoid misdiagnosis and misclassification of patients referred to clinical EEG recordings.

AB - Objective: To determine the prevalence and characteristics of normal variants in EEG recordings in a large cohort, and provide readers with typical examples of all normal variants for educational purposes.Methods: Using the SCORE EEG system (Standardized Computer-Based Organized Reporting of EEG), we prospectively extracted EEG features in consecutive patients. In this dataset, we analyzed 3050 recordings from 2319 patients (mean age 38.5 years; range: 1-89 years).Results: The distribution of the normal variants was as follows: sharp transients 19.21% (including wicket spikes), rhythmic temporal theta of drowsiness 6.03%, temporal slowing of the old 2.89%, slow fused transients 2.59%, 14-and 6-Hz bursts 1.83%, breach rhythm 1.25%, small sharp spikes 1.05%, 6-Hz spike and slow wave 0.69% and SREDA 0.03%.Conclusions: The most prevalent normal variants are the sharp transients, which must not be over-read as epileptiform discharges.Significance: EEG readers must be familiar with the normal variants to avoid misdiagnosis and misclassification of patients referred to clinical EEG recordings.

U2 - 10.1016/j.cnp.2022.06.001

DO - 10.1016/j.cnp.2022.06.001

M3 - Article

C2 - 35865124

SN - 2467-981X

VL - 7

SP - 183

EP - 200

JO - Clinical Neurophysiology Practice

JF - Clinical Neurophysiology Practice

ER -

EEG normal variants: A prospective study using the SCORE system

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