[Comparative assessment of electroencephalographic readings and perfusion index in patients in the perioperative period and coma].

Different monitoring modes are used to estimate the depth of anesthesia. Electroencephalography (EEG) is employed as a method of an electrophysiological study of brain function both during anesthesia and at the neuroresuscitative stage and changes in the peripheral vascular bed are evaluated by means of the perfusion index (PI). The purpose of the study was to comparatively analyze the use of EEG readings and PI at different stages of surgery and in coma of various etiologies.