Validity of Sheet-type Portable Monitoring Device for Screening Obstructive Sleep Apnea Syndrome

Overview

Journal Sleep Breath

Publisher Springer

Date 2012 Jun 19

PMID 22707086

Citations 5

Authors

Mina Kobayashi

Kazuyoshi Namba

Satoru Tsuiki

Masaki Nakamura

Masamichi Hayashi

Yuuki Mieno

Hiromi Imizu

Shiho Fujita

Atsushi Yoshikawa

Hiroki Sakakibara

Yuichi Inoue

Affiliations

Soon will be listed here.

Abstract

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.

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