Polysomnographic evaluation of sleep structure changes in patients with suspected OSA
Journal Title: Postępy Nauk Medycznych - Year 2015, Vol 28, Issue 1
Abstract
Introduction. Recent polysomnography (PSG) studies show the same sleep structure changes in OSA patients: longer the light sleep, shorter or lack of the deep sleep and REM.Aim. The aim of the study was to analyze correlation between sleep structure and breathing sleep disturbances.Material and methods. We analyzed 907 polysomnograms of patients with suspected OSA, they were divided into 2 groups based of AHI: non-OSA (AHI < 5) and OSA (AHI ≥ 5). According to AHI OSA group was divided into: mild (5 ≤ AHI < 15), moderate (15 ≤ AHI ≤ 30), and severe (AHI > 30). We analyzed duration of sleep stages: light, deep sleep and REM using Statistica 6.1.Results. We found the statistically significant differences of sleep structure between non-OSA and OSA population in light sleep 76.7 vs 86.45% (p < 0.0001); deep sleep 17.53 vs 14.35% (p < 0.0001); REM 5.87 vs 5.77% (p < 0.05). In OSA group sleep structure was classified in AHI dependent groups: mild (light sleep – 79.87%; deep sleep – 14.35%; REM – 5.77%); moderate (light sleep – 82.73%; deep sleep – 12.64%; REM – 4.63%); severe (light sleep – 86.45%; deep sleep – 9.54%; REM – 4.01%).Conclusions. We found longer the light sleep, shorter deep and REM sleep in OSA, and also in non-OSA shorter deep sleep and REM comparing to physiological sleep what may be due to worse sleep laboratory conditions compared with home and may be limiting for PSG.
Authors and Affiliations
Monika Kuźmińska, Magdalena Walicka, Wojciech Kukwa, Ewa Marcinowska-Suchowierska
Keywords
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