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Metabolic and Inflammatory Cerebral Diseases: Electrophysiological Aspects

Published online by Cambridge University Press:  18 September 2015

G.B. Young
G.B. Young*
Affiliation:
Department of Clinical Neurological Sciences, The London Health Sciences Centre, London, Ontario
*
Department of Clinical Neurological Sciences, London Health Sciences Centre, 375 South Street, London, Ontario, Canada N6A 4G5
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Abstract

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The electroencephalogram (EEG) is an important diagnostic tool in coma. Although comatose patients may be similar on neurological examination, the EEG reveals a wide range of abnormalities. For metabolic and septic encephalopathies, the “anesthesia model” is a useful analogy. The EEG is very sensitive to the depth or severity of brain dysfunction in coma as well as the direction of the process if serial tracings or continuous recordings are used. While the EEG is rarely specific for the etiology of coma, it may help determine the class or general category of disease process. In conditions capable of causing neuronal death, e.g., anoxia-ischemia, the EEG can be of prognostic value.

Type
Research Article
Information
Canadian Journal of Neurological Sciences , Volume 25 , Issue S1 , February 1998 , pp. S16 - S20
Copyright
Copyright © Canadian Neurological Sciences Federation 1998

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