Daytime sleepiness relates to snoring independent of the apnea-hypopnea index in women from the general population.

Autors:	Malin Svensson, Karl A Franklin, Jenny Theorell-Haglöw, Eva Lindberg
Idioma:	Eng.
Data:	2008-11-07
Revista:	Chest (0012-3692)
Lliurament:	Chest. 2008 Nov;134(5):919-24
Abstract:	OBJECTIVES: The aim was to investigate the significance of snoring and sleep apnea on daytime symptoms in a population-based sample of women. METHOD: From the general population, 400 women aged 20 to 70 years were randomly selected, with oversampling of habitually snoring women. The women were investigated using full-night polysomnography and a questionnaire. The apnea-hypopnea index (AHI) was calculated, and women who acknowledged snoring loudly and disturbingly often or very often were considered habitual snorers. RESULTS: Habitual snoring was independently related to excessive daytime sleepiness (odds ratio [OR], 2.28; 95% confidence interval [CI], 1.31 to 3.99), to falling asleep involuntarily during the day (OR, 2.11; 95% CI, 1.06 to 4.21), to waking up unrefreshed (OR, 2.14; 95% CI, 1.30 to 3.52), to daytime fatigue (OR, 2.77; 95% CI, 1.54 to 4.99), and to a dry mouth on awakening (OR, 2.00; 95% CI, 1.22 to 3.27) after adjustment for AHI, age, body mass index (BMI), smoking, total sleep time, percentage of slow-wave sleep, and percentage of rapid eye movement (REM) sleep. An AHI > or = 15/h was only related to a dry mouth on awakening after adjustment for snoring, age, BMI, smoking, total sleep time, percentage of slow-wave sleep, and percentage of REM sleep (OR, 2.24; 95% CI, 1.14 to 4.40). An AHI of 5 to 15/h was not related to any daytime symptom. CONCLUSIONS: Excessive daytime sleepiness and daytime fatigue are related to habitual snoring independent of the apnea-hypopnea frequency, age, obesity, smoking, and sleep parameters in a population-based sample of women, but not to the AHI. This indicates that snoring is an independent cause of excess daytime sleepiness and not merely a proxy for sleep apnea.
Copyright:	Chest Department of Surgical Sciences,Head and Neck Surgery, Uppsala University, Uppsala, Sweden. malin.l.svensson akademiska.se
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Temes:	Adult, Aged, Apnea, Circadian Rhythm, Female, Humans, Incidence, Middle Aged, Polysomnography, Population Surveillance, Questionnaires, Sleep Apnea Syndromes, Sleep Disorders, Circadian Rhythm, Snoring, Sweden