Get full text report (pdf file; Read by ADOBE Acrobat Reader)
J Occup Health year 2007 volume 49 number 2 page 117 - 124
Classification Original
Title Obstructive Sleep Apnea-hypopnea Syndrome Patients with Overweight and Hypertension in a Japanese Workplace
Author Ken OKABAYASHI1,4, Etsuo KASAHARA1, Hiroko UCHIYAMA1, Kazuhiko YOKOTA1, Yuki TOGASHI2, Chiyoko KONO2, Yoshihito YAMADA2, Hiroko AMANO2, Tetsuo YAMAGUCHI2, Toshihiro KAWAMOTO3, Hiroaki FUJIHARA4 and Yoichi UETA4
Organization 1JR East Health Promotion Center, 2Department of Respiratory Medicine, JR Tokyo General Hospital, East Japan Railway Company, 3Department of Hygene, School of Medicine and 4Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Japan
Keywords Epworth Sleepiness Scale (ESS), Home pulse oximetry, Hypertension, Overweight, Polysomnography, Sleep apnea
Correspondence Y. Ueta, Department of Physiology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan (e-mail: yoichi@med.uoeh-u.ac.jp)
Abstract Obstructive Sleep Apnea-hypopnea Syndrome Patients with Overweight and Hypertension in a Japanese Workplace: Ken OKABAYASHI, et al. JR East Health Promotion Center, East Japan Railway Company-The objective of this study was to determine the relationship between obstructive sleep apnea-hypopnea syndrome (OSAHS) and overweight combined with hypertension and to examine whether OSAHS in conjunction with overweight and hypertension is associated with daytime sleepiness. In a Japanese workplace of 28,636 employees, 368 men (19-62 yr old), who were anxious regarding their OSAHS symptoms, underwent home pulse oximetry. Of these, 153 men subsequently underwent all-night polysomnography (PSG), and OSAHS was diagnosed in 149. We next classified these 149 men into the following groups: A [Overweight (-)/Hypertension (-), n=41], B [Overweight (-)/Hypertension (+), n=15], C [Overweight (+)/Hypertension (-), n=46], and D [Overweight (+)/Hypertension (+), n=47]. The Epworth Sleepiness Scale (ESS) was used to evaluate daytime sleepiness and the apnea-hypopnea index (AHI) was used to evaluate the severity of OSAHS. The averages of the ESS score and the AHI were compared in each group. Both the average ESS scores and the percentage of ESS scores >11 were not significantly different among the groups. The average AHI of group D was the highest among all of the groups and that of group C was significantly higher than those of groups A and B. In all the groups, the OSAHS patients with overweight and hypertension in this study had the highest AHI. The level of daytime sleepiness evaluated by the ESS in this study was almost the same in the OSAHS patients regardless of the degree of overweight or hypertension. These observations suggest that it is necessary to positively recommend PSG to men who are suspected of having OSAHS with overweight and hypertension, even if they do not have daytime sleepiness.