[Structure of nocturnal sleep if there is a violation of the blood supply in the territory of internal carotid artery].

The work examines the influence of degree ofstenosis or occlusion of the internal carotid artery (ICA) of noc- turnal sleep and discusses possible neurophysiological mechanisms of sleep disorders when blood flow in ca- rotid system. 24 patients (19 male and 5 female) were examined. The mean age of men was 49.75 ± 6.55; women--46.67 ± 5.86. Six patients with a single unilateral internal carotid stenosis (ICA) 50%; seven patients--stenosis of ICA 50-70%; eleven patients--occlusion of ICA completed the study. Polysomnography was recorded with "Neuro-Spectr-5/EP" ("NeuroSoft", Russia) and "Delta Flash" ("Deltamed", France) according to international recommendation. Stages of sleep were identified according to Re- chtschaffen A., Kales A. (1968) criteria. Patients were asked to fill in the questionnaire prior to clinical and polysomnographic evaluation. Regional cerebral blood flow (mL/100g/min) with 99mTechnetium (Gamma-camera, DST-Xli "General electric", USA) was study by single photon emission CT imaging. The result of this study showed that with stenosis of the ICA to 50% structure of nocturnal sleep is not changed: records all phases and stages of sleep, quantitative parameters that match the normative data; or decline in the representation of only the stage II sleep; at stenosis ICA of 50-70% is violation of mostly stage II sleep and slow-wave sleep, and with occlusion ICA violation slow-wave sleep and in 45% of cases--REM-sleep.