PURPOSE: The SD-101 is a non-restrictive sheet-like medical device that measures sleep-disordered breathing using pressure sensors that can detect the gravitational alterations in the body that accompany respiratory movement. One report has described that the screening specificity of the SD-101 for mild to moderate obstructive sleep apnea syndrome (OSAS) is relatively low. The present study examines whether the accuracy of the SD-101 for OSAS screening is improved by simultaneously measuring percutaneous oxygen saturation (SpO2). METHODS: Sixty consecutive individuals with suspected OSAS consented to undergo overnight polysomnography (PSG) together with simultaneous measurements of SD-101 and SpO2 at our laboratory. RESULTS: The apnea-hypopnea index (AHI) determined from PSG and the respiratory disturbance index determined from SD-101 measurements significantly correlated (SD-101 alone: r = 0.871, p < 0.0001; SD-101 with SpO2: r = 0.965, p < 0.0001). Bland-Altman plots showed a smaller dispersion for the SD-101 with SpO2 than for the SD-101 alone. The SD-101 with SpO2 detected an AHI of >15 on PSG with a sensitivity and specificity of 96.9 and 90.5 % compared with 87.5 and of 85.7 %, respectively, of the SD-101 alone. CONCLUSIONS: Simultaneously measuring SpO2 improved the accuracy of the SD-101 for OSAS screening. Furthermore, this modality appears to offer high sensitivity and specificity for detecting even moderately severe OSAS.
PURPOSE: The SD-101 is a non-restrictive sheet-like medical device that measures sleep-disordered breathing using pressure sensors that can detect the gravitational alterations in the body that accompany respiratory movement. One report has described that the screening specificity of the SD-101 for mild to moderate obstructive sleep apnea syndrome (OSAS) is relatively low. The present study examines whether the accuracy of the SD-101 for OSAS screening is improved by simultaneously measuring percutaneous oxygen saturation (SpO2). METHODS: Sixty consecutive individuals with suspected OSAS consented to undergo overnight polysomnography (PSG) together with simultaneous measurements of SD-101 and SpO2 at our laboratory. RESULTS: The apnea-hypopnea index (AHI) determined from PSG and the respiratory disturbance index determined from SD-101 measurements significantly correlated (SD-101 alone: r = 0.871, p < 0.0001; SD-101 with SpO2: r = 0.965, p < 0.0001). Bland-Altman plots showed a smaller dispersion for the SD-101 with SpO2 than for the SD-101 alone. The SD-101 with SpO2 detected an AHI of >15 on PSG with a sensitivity and specificity of 96.9 and 90.5 % compared with 87.5 and of 85.7 %, respectively, of the SD-101 alone. CONCLUSIONS: Simultaneously measuring SpO2 improved the accuracy of the SD-101 for OSAS screening. Furthermore, this modality appears to offer high sensitivity and specificity for detecting even moderately severe OSAS.
Authors: T Hori; Y Sugita; E Koga; S Shirakawa; K Inoue; S Uchida; H Kuwahara; M Kousaka; T Kobayashi; Y Tsuji; M Terashima; K Fukuda; N Fukuda Journal: Psychiatry Clin Neurosci Date: 2001-06 Impact factor: 5.188
Authors: Ana Claudia Tonelli de Oliveira; Denis Martinez; Luiz Felipe T Vasconcelos; Sandro Cadaval Gonçalves; Maria do Carmo Lenz; Sandra Costa Fuchs; Miguel Gus; Erlon Oliveira de Abreu-Silva; Leila Beltrami Moreira; Flávio Danni Fuchs Journal: Chest Date: 2009-02 Impact factor: 9.410
Authors: Mirjam Christ-Crain; Daiana Stolz; Sukhdeep Jutla; Orestes Couppis; Christian Müller; Roland Bingisser; Philipp Schuetz; Michael Tamm; Ray Edwards; Beat Müller; Ashley B Grossman Journal: Am J Respir Crit Care Med Date: 2007-08-16 Impact factor: 21.405