Abstract
EEG is a diagnostic tool that is commonly ordered in ICU, it is argued that EEG role is overestimated in critically ill patient, our study included 141 patients from ICU who had an EEG during their admission. The most common reason for ordering EEG is an unexplained impairment of consciousness. The majority of the patients EEG are reported as abnormal, and they represented about (90.8%) out of total patients, while the study showed that the most important specific EEG abnormality are diffuse slowing in 36.9%. However EEG neither helps in changing patient management nor it improves patients outcome.