flat electroencephalogram

e·lec·tro·ce·re·bral si·lence (ECS),

(ē-lek'trō-sĕ-rē'brăl sī'lens),
Flat or isoelectric encephalogram; an electroencephalogram with absence of cerebral activity over 2 mcv from symmetrically placed electrode pairs 10 (or more) cm apart, and with interelectrode resistance between 100-10,000 ohms; if such a record is present for 30 minutes in a clinically brain dead adult and if drug intoxication, hypothermia, and recent hypotension have been excluded, the diagnosis of cerebral death is supported.

flat electroencephalogram

a graphic chart on which no tracings are recorded during electroencephalography, indicating a lack of brain wave activity. Flat readings are indicative of brain death except in cases of profound hypothermia and central nervous system depression. Also called isoelectric electroencephalogram. See also brain death.
An EEG without cerebral activity over 2 µv from symmetrically placed electrode pairs > 10 cm apart, and with interelectrode resistance between 100 and 10,000 ohms; if present for 30 minutes in a clinically brain dead adult—and if drug intoxication, hypothermia, and recent hypotension have been excluded—the diagnosis of cerebral death is supported

e·lec·tro·ce·re·bral si·lence

(ECS) (ĕ-lek'trō-ser'ĕ-brăl sī'lĕns)
Flat or isoelectric encephalogram; an electroencephalogram with absence of cerebral activity from symmetrically placed electrode pairs; if such a record is present for 30 minutes in a clinically brain-dead adult and if drug intoxication, hypothermia, and recent hypotension have been excluded, the diagnosis of cerebral death is supported.
Synonym(s): flat electroencephalogram.
References in periodicals archive ?
Thus, the Harvard committee's new standards specified that, before the respirator could be turned off, four requirements had to be met: a flat electroencephalogram over a twenty-four-hour period; no response to external stimulation; no spontaneous breathing; and pupils fixed and dilated.