ETHNIC PECULIARITIES OF SLEEP DISORDERS IN EASTERN SIBERIA

Abstract

The purpose of this investigation was to study the ethnic peculiarities of sleep disorders in European and Mongoloid races living in Eastern Siberia. In this study we performed questioning of409 respondents of Europeans (Russian) 203 (49.63 %) and Mongoloid (Buryats) 206 (50.37 %) aged 20-60 years. Living in the Irkutsk region and the Buryat Republic. Gender structure: 270females (66.9 %) and 125 males (33.1 %). Standard questionnaire of Stanford Sleep Research Center (USA) included a complex of questions about problems of sleep and their subjective assessment: no problems; light problem, moderate problem, severe problem. PSG-monitoring applying system GRASSTELEFACTOR Twin PSG (Comet) with amplifier As 40 with integrated module for sleep SPM-1 (USA). It was revealed that "light" sleep problems note 25.1 % of native ethnic group respondents (Buryats) and 38.3 % of Russian respondents (p < 0.05). The moderate sleep disorders were characteristic of 8.7 % Buryats and 3.1 % Russian (p < 0.05), and the severe sleep disorders 5.3 % and 2.2 %, respectively (p < 0.05). Severe sleep disorders noted 7.2 % Buryat women versus 1.8 % in the group of Russian women (p < 0.05), among men the severe sleep disorders is significantly higher (23.8 % in the Buryats and Russian 14.6 %, p < 0.05). We identified correlation between body mass index (BMI) and obstructive sleep apnea (OSA) in males of Mongoloid race (with OSA BMI was 33.37 kg/cm², without 24.86 kg/cm², p < 0.05). According to the results of the PSG study in males of the both ethnic groups, a higher incidence of moderate and severe OSA in the Buryats (28.2 % and 20.1 %, respectively, p < 0.05). In general, these results confirm the presence of more severe sleep disorders in Mongoloids (including OSA), but certain anatomical features for the formation of OSA we have not found, that require further study.