The Clinical Efficacy of Portable Monitoring Devices(MESAM IV and Edentec) in Evaluating Sleep Apnea Syndrome: A Comparative Study with Simultaneously Recorded Standard Polysomnography

Background：Standard polysomnography is generally used in the diagnosis of sleep apnea syndrome. However, this technique is laborious, costly and inconvenient as a screening test or a test for epidemiological study. A simple screening test for sleep apnea, administered at home, would provide physicians with a convenient and less costly means of evaluating possible sleep apnea. Objectives：The aim of this study was to evaluate the validity of portable sleep monitoring devices. The validity of measurements made by the portable sleep monitoring devices was assessed by comparing respiratory parameters obtained using the portable sleep monitoring devices with those obtained using standard polysomnography. Materials and Methods：Eighteen patients were collected and divided into two groups. Direct comparison was made between data obtained by the portable monitoring devices (MESAM IV in group 1 and Edentec in group 2 and data simultaneously obtained by standard polysomnographic techniques. Results：In group 1, oxygen desaturation index(ODI and heart variation index(HVI in MESAM IV were significantly correlated with apnea index(AI and respiratory disturbance index(RDI in standard polysomnography. In group 2, AI and RDI in Edentec were significantly correlated with those in standard polysomnography. Conclusions：The results of this study suggest that portable monitoring devices(MESAM IV