Snoring and Daytime Sleepiness

Excessive daytime sleepiness is related to habitual snoring in women.

QuickFacts:

  1. Snoring is an independent cause of excessive daytime sleepiness.

Malin Svensson, MD et al. Daytime sleepiness relates to snoring independent of the apnea-hypopnea index in women from the general population

In: Chest (2008 Aug) doi:10.1378/chest.08‐0847

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 20‐70 years, were randomly selected, with over sampling of habitually snoring women. They were investigated with a 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, OR= 2.28 (1.31‐3.99), to falling asleep involuntarily during the day, OR= 2.11 (1.06‐4.21), to waking up unrefreshed, OR= 2.14 (1.30‐3.52), to daytime fatigue, OR= 2.77 (1.54‐4.99) and to a dry mouth on awakening, OR= 2.00 (1.22‐3.27) after adjustment for of AHI, age, body mass index (BMI), smoking, total sleep time, % slow wave sleep and % REM sleep. Apnea‐hypopnea index ≥15 was only related to a dry mouth on awakening after adjustment for snoring, age, BMI, smoking, total sleep time, % slow wave sleep and % REM sleep, OR= 2.24 (1.14‐4.40). An AHI of 5‐15 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 apnea‐hypopnea index. This indicates that snoring is an independent cause of excess daytime sleepiness and not merely a proxy for sleep apnea.

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Sleep Apnea and Snoring Treatment Center
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