Surveillance electroencephalographique durant l'endarteriectomie carotidienne

Summary Continuous EEG monitoring during 110 carotid endarterectomies showed transient or permanent abnormalities in 35 cases. In 13 cases, these abnormalities occurred during carotid clamping and led the surgeon to place a shunt in 8 cases. In 22 cases, electrical abnormalities of various types appeared outside the clamping period. Continuous EEG monitoring demonstrated that cerebral disturbances can occur at any time during the operative period. Thus, intra-operative EEG monitoring allows a better understanding of clinical signs which may be seen postoperatively.