[Value of electroencephalography in surgical procedures for the creation of extra-intracranial microvascular anastomoses].

EEG was conducted in 55 patients before and after operation of EICMA. Besides clinical improvement, improvement of the EEG values was observed in most cases. The discrepancy between the EEG values and the neurological symptomatology depends on the localization of the pathological focus in the cerebral hemispheres. The EICMA operation is ineffective when focal delta activity is recorded on the EEG. This should be taken into account in determining the contraindications for EICMA operation in patients with ischemic disorders of cerebral circulation.