Results of electroencephalographic monitoring during 367 carotid endarterectomies. Use of a dedicated minicomputer.
Three hundred sixty-seven carotid endarterectomies were monitored using routine electroencephalographic (EEG) techniques. In 9.8%, changes in the EEG followed clamping of the internal carotid artery and could roughly be grouped into 6 patterns. The most common (47%) was rapid unilateral or bilateral attenuation of background anesthetic-induced fast EEG activity. Conclusions drawn from studies of the 9 patients who had immediate postoperative neurological deficits of varying degrees are presented as they illustrate monitoring techniques that are useful for early recognition of cerebral ischemia. Thirty-five patients were monitored with both routine and computerized techniques--the latter proved more useful than the former on all counts.
D000758:Anesthesia; D002545:Brain Ischemia / Q000175:diagnosis; D002339:Carotid Arteries / Q000601:surgery*; D002343:Carotid Artery, Internal / Q000601:surgery; D002560:Cerebrovascular Circulation; D003201:Computers; D003250:Constriction; D004569:Electroencephalography; D004691:Endarterectomy; D006801:Humans; D008905:Minicomputers; D008991:Monitoring, Physiologic; D011183:Postoperative Complications / Q000175:diagnosis