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  • Title: [Studies with the fully automated EEG sleep analysis system QUISI].
    Author: Gfüllner F, Siemon G.
    Journal: Pneumologie; 2000 Dec; 54(12):580-3. PubMed ID: 11199117.
    Abstract:
    To judge sleep reliably would be interesting not only for outpatient sleep diagnostics, but also in the inpatient sphere. A step in this direction is the easy-to-apply fully automated sleep-EEG-analysis system QUISI. Nine males patients with obstructive sleep apnoea syndrome were examined simultaneously by polysomnography and the QUISI system. A comparison of the sleep profiles evaluated by polysomnographic recordings using Rechtschaffen and Kales' rules with the automated classification using QUISI recording shows that the difference of the sleep parameters sleep period time (SPT), total sleep time (TST), REM, stage 1, stage 2, slow-wave sleep and the awake stage of maximum five patients ranged between +/- 10 minutes, respectively +/- 5 per cent. Only two of nine sleep profiles could be compared as far as the sequence of the sleep stages was concerned. According to our results it is important to edit the original data and to treat the fully automated sleep profile. We cannot recommend QUISI to establish sleep profiles for the obstructive sleep apnoea syndrome.
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