Prognostic significance of episodic low amplitude or relatively isoelectric EEG patterns.
Electroencephalograms demonstrating episodes of relative iso-electric activity in 14 comatose patients are divided into three patterns. The first, Type I, showed brief low amplitude or relatively iso-electric episodes intermixed with slow activity. The second, Type II, showed epileptogenic activity with episodes of relative iso-electricity. The third, Type III, showed burst suppression in which iso-electric intervals were of greater duration than periodic slow activity. All patients expired, indicating grave prognostic implications for all three patterns.
D000328:Adult; D000368:Aged; D003128:Coma / Q000175:diagnosis; D004569:Electroencephalography; D005260:Female; D006323:Heart Arrest / Q000175:diagnosis; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007676:Kidney Failure, Chronic / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012640:Seizures / Q000175:diagnosis