The use of aperiodic analysis of the EEG during carotid artery surgery.
A new processed EEG machine, the Lifescan, which uses aperiodic analysis, was used to monitor cerebral activity prospectively in twenty-one patients undergoing carotid artery surgery under general anaesthesia. The machine was easy to apply, use and read. Volatile agents caused a bilateral decrease in high frequency activity. Unilateral changes consistent with cerebral ischaemia at the time of carotid cross-clamping were also seen. One such prolonged change was not associated with neurological deficit. A further patient awoke with neurological deficit without displaying Lifescan evidence of ischaemia. The machine requires further assessment.
Silbert
B S
BS
Department of Anaesthesia, St. Vincent's Hospital, Fitzroy, Victoria, Australia.
Koumoundouros
E
E
Davies
M J
MJ
Cronin
K D
KD
D000368:Aged; D000768:Anesthesia, General; D002545:Brain Ischemia / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology; D002339:Carotid Arteries / Q000601:surgery*; D002340:Carotid Artery Diseases / Q000601:surgery; D004569:Electroencephalography / Q000295:instrumentation / Q000379:methods*; D004691:Endarterectomy; D005188:False Negative Reactions; D005260:Female; D006221:Halothane; D006801:Humans; D007430:Intraoperative Care; D007431:Intraoperative Complications; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted
D006221:Halothane