Featured Research

from universities, journals, and other organizations

Snoring Intensity Linked To Subjective Measure Of Sleepiness In Obstructive Sleep Apnea Patients

Date:
December 23, 2008
Source:
American Academy of Sleep Medicine
Summary:
A new study shows that objectively measured snoring intensity is correlated with subjective sleepiness independent of the apnea-hypopnea index in patients with moderate to severe obstructive sleep apnea.

A new study shows that objectively measured snoring intensity is correlated with subjective sleepiness independent of the apnea-hypopnea index (AHI) in patients with moderate to severe obstructive sleep apnea (OSA).

Related Articles


Results indicate that the sound intensity of objectively measured snoring in patients with OSA is independently correlated with subjective sleepiness as measured by the Epworth Sleepiness Scale (ESS), and subjective sleepiness is better explained by snoring intensity than by AHI. Independent variables such as snoring intensity, desaturation severity, daily sleep time, subjective snoring frequency and nasal obstruction symptoms accounted for 22 percent of the variance in ESS scores. Snoring intensity and AHI together, however, could explain only 15 percent of the variance in ESS scores.

Principal investigator Hiroshi Nakano, MD, PhD, of the department of pulmonology at the Fukuoka National Hospital in Fukuoka, Japan, says that the results of the study indicate that daytime sleepiness is affected not only by the severity of OSA, but also by the loudness of snoring.

"The results were not so surprising, because previous studies in general population have shown an independent relationship between the degree of snoring, by a questionnaire, and sleepiness," said Nakano.

Records of 507 patients who were referred to Fukuoka National Hospital for suspected OSA and who underwent diagnostic polysomnography (PSG) between September 2002 and January 2005 were retrospectively reviewed. Subjective sleepiness was assessed using the ESS, and snoring intensity was assessed using the highest one percentile ambient sound-pressure level attained while asleep during PSG.

Patients were placed into groups of non-to-mild OSA (AHI less than 15) and moderate-to-severe OSA (AHI greater than 15) in order to clarify the effect of OSA severity on the relationship between snoring intensity and sleepiness in subsequent analyses.

Findings suggest that snoring intensity is significantly correlated with age, body mass index (BMI) and AHI. Insufficient sleep in daily life was taken into consideration as a possible cofounder, as it may enhance snoring intensity and sleepiness. Although sleepiness is one of the most important symptoms of OSA, the authors report that the correlation between the degree of sleepiness and the severity of OSA has been found to be relatively weak in many studies.

Because objectively measured snoring is related to sleepiness independent of OSA, the authors conclude that quantitative measurements of snoring are desirable in ordinary sleep studies.


Story Source:

The above story is based on materials provided by American Academy of Sleep Medicine. Note: Materials may be edited for content and length.


Journal Reference:

  1. Relationship between Snoring Sound Intensity and Sleeplessness in Patients with Obstructive Sleep Apnea. Journal of Clinical Sleep Medicine, Dec. 15, 2008

Cite This Page:

American Academy of Sleep Medicine. "Snoring Intensity Linked To Subjective Measure Of Sleepiness In Obstructive Sleep Apnea Patients." ScienceDaily. ScienceDaily, 23 December 2008. <www.sciencedaily.com/releases/2008/12/081215074400.htm>.
American Academy of Sleep Medicine. (2008, December 23). Snoring Intensity Linked To Subjective Measure Of Sleepiness In Obstructive Sleep Apnea Patients. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2008/12/081215074400.htm
American Academy of Sleep Medicine. "Snoring Intensity Linked To Subjective Measure Of Sleepiness In Obstructive Sleep Apnea Patients." ScienceDaily. www.sciencedaily.com/releases/2008/12/081215074400.htm (accessed October 25, 2014).

Share This



More Health & Medicine News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

IKEA Desk Converts From Standing to Sitting With One Button

IKEA Desk Converts From Standing to Sitting With One Button

Buzz60 (Oct. 24, 2014) IKEA is out with a new convertible desk that can convert from a sitting desk to a standing one with just the push of a button. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Ebola Protective Suits Being Made in China

Ebola Protective Suits Being Made in China

AFP (Oct. 24, 2014) A factory in China is busy making Ebola protective suits for healthcare workers and others fighting the spread of the virus. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com
WHO: Millions of Ebola Vaccine Doses by 2015

WHO: Millions of Ebola Vaccine Doses by 2015

AP (Oct. 24, 2014) The World Health Organization said on Friday that millions of doses of two experimental Ebola vaccines could be ready for use in 2015 and five more experimental vaccines would start being tested in March. (Oct. 24) Video provided by AP
Powered by NewsLook.com
Doctor in NYC Quarantined With Ebola

Doctor in NYC Quarantined With Ebola

AP (Oct. 24, 2014) An emergency room doctor who recently returned to the city after treating Ebola patients in West Africa has tested positive for the virus. He's quarantined in a hospital. (Oct. 24) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins