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Sleep Disorders
Volume 2012, Article ID 316232, 8 pages
Research Article

Association of Duration of Sleep and Cardiovascular and Metabolic Comorbidities in Sleep Apnea Syndrome

1The Department of Sleep Disorders, Dr Suat Seren Chest Diseases and Surgery Training and Research Hospital, Yenisehir, 35110 Izmir, Turkey
2The Department of Pulmonary Diseases, Dr Suat Seren Chest Diseases and Surgery Training and Research Hospital, 35110 Izmir, Turkey
3The Department of Pulmonary Diseases, Faculty of Medicine, Hacettepe University, 06100 Ankara, Turkey

Received 2 October 2011; Revised 21 November 2011; Accepted 23 November 2011

Academic Editor: Sophia Schiza

Copyright © 2012 Zeynep Zeren Ucar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background/Aim. Previous population-based studies found association between duration of sleep and cardiovascular and metabolic comorbidities. Our aim was to investigate the association between the duration of sleep and cardiovascular and metabolic comorbidities in OSAS. Patients and Methods. The study enrolled 312 patients, who had polysomnography (PSG) during 2006-2007 and responded to a telephone-administered questionnaire providing information on characteristics of sleep on average 12 months after PSG. Results. Of the patients, 90 were female (28.8%), 173 (58.5) received the diagnosis of OSAS, 150 (45%) had no comorbidities, 122 had hypertension (HT), 44 had diabetes mellitus (DM), and 38 had coronary heart disease (CHD). Mean ± SD of age in years was , , , and for the no comorbidity, HT, DM, and CHD groups, respectively. Reported duration of sleep was not associated with any of the comorbidities in the overall group. In the analysis restricted to OSAS patients, sleep duration ≤6 hours was significantly associated with CHD after the adjustment for age, gender, and other associated factors (OR: 5.8, 95% CI: 1.0–32.6). Conclusions. Confirmation of the association between shorter duration of sleep and CHD will provide prognostic information and help for the management of OSAS.