J Korean Neurol Assoc.
2007 Nov;25(4):488-493.
Prevalence and Related Parameters of Daytime Sleepiness in Patients with Habitual Snoring
- Affiliations
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- 1Department of Neurology, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea. neurocho@dsmc.or.kr
- 2Department of Dentistry, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
- 3Department of Otolaryngology, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
- 4Department of Family medicine, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
- 5Department of Psychiatry, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
Abstract
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BACKGROUND: Excessive daytime sleepiness (EDS) is a common symptom in patients with habitual snoring, including obstructive sleep apnea (OSA). However, there had been no studies for the prevalence and related factors of EDS in patients with habitual snoring in Korea. So we studied the prevalence and related factors of EDS in patients with habitual snoring.
METHODS
Sixty two patients with habitual snoring were selected from our sleep center from February 2004 to January 2007. All patients were given an overnight polysomnography and then took the multiple sleep latency tests the following day. They were classified into two groups: EDS (mean sleep latency, MSL<10 minutes) and no EDS (MSL> or =10 minutes). We studied the prevalence of EDS in patients with habitual snoring and compared two groups about the demographic data and polysomnographic characteristics.
RESULTS
Most (72.6%) patients with habitual snoring demonstrated EDS. There were significant different parameters between the EDS group and the no EDS group, such as total sleep time, percent of slow wave sleep, snoring index, arousal index, and number of desaturation. Among these, the logistic regression analysis identified total sleep time as a significant predictive factor for daytime sleepiness. MSL correlated significantly with the percent of slow wave sleep and number of desaturation.
CONCLUSIONS
Our results showed the high prevalence of EDS in patients with habitual snoring in Korea. Long total sleep time in polysomnography seems to predict EDS.
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