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Table of Contents
Vol. 60, No. 6, 1993
Issue release date: 1993
Section title: Original Paper
Respiration 1993;60:332–337
(DOI:10.1159/000196231)

Prevalence of Sleep Apnea among Japanese Industrial Workers Determined by a Portable Sleep Monitoring System

Hida W. · Shindoh C. · Miki H. · Kikuchi Y. · Okabe S. · Taguchi O. · Takishima T. · Shirato K.
First Department of Internal Medicine, Tohoku University School of Medicine, Sendai, Japan

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: March 29, 1993
Accepted: August 19, 1993
Published online: January 20, 2009
Issue release date: 1993

Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0

ISSN: 0025-7931 (Print)
eISSN: 1423-0356 (Online)

For additional information: http://www.karger.com/RES

Abstract

We developed a new portable sleep monitoring system and studied the prevalence of sleep apnea syndrome among Japanese industrial workers. This device assessed three kinds of parameters: nasal airflow, tracheal sound and electrocardiogram (ECG), and digitally stored the clock time of the onset of apnea, apnea duration and R-R intervals by a built-in microcomputer. After monitoring, the portable sleep monitor was connected to a host computer, and apneic episodes, the so-called ‘apnea index’ as apneic episodes corrected by measuring time (‘AI’) and R-R intervals were analyzed. In 170 inpatients referred to our sleep clinic, sleep monitoring by this device was performed simultaneously with all-night polysomnography, and the sensitivity and specificity of this device was determined under different criteria of the apnea index (AI) (AI > 5,10, 15 and 20 episodes/h) by polysomnography. In all AI criteria, the sensitivity was more than 90%, and the specificity was also reasonably high. Using this system, successive 2-night home sleep monitoring was performed on 168 healthy workers in one Japanese industrial company, and 159 people (140 males; 19 females) who had successful monitoring were analyzed. The percentage of persons who had ‘AΓ of more than 10 episodes/h was 7.5%. There were no significant correlations between ‘AI’ and age, body weight or scores estimated by sleep questionnaires. These results suggest that even in people who are seemingly healthy significant apneic episodes could be detected by the portable home sleep monitoring system. This system may therefore be useful in evaluating the occurrence of sleep apnea syndrom in general populations.

© 1993 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: March 29, 1993
Accepted: August 19, 1993
Published online: January 20, 2009
Issue release date: 1993

Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 0

ISSN: 0025-7931 (Print)
eISSN: 1423-0356 (Online)

For additional information: http://www.karger.com/RES


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Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
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