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 November 1, 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 November 1, 2014).

Share This



More Health & Medicine News

Saturday, November 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Melafind: Spotting Melanoma Without a Biopsy

Melafind: Spotting Melanoma Without a Biopsy

Ivanhoe (Oct. 31, 2014) The MelaFind device is a pain-free way to check suspicious moles for melanoma, without the need for a biopsy. Video provided by Ivanhoe
Powered by NewsLook.com
Battling Multiple Myeloma

Battling Multiple Myeloma

Ivanhoe (Oct. 31, 2014) The answer isn’t always found in new drugs – repurposing an ‘old’ drug that could mean better multiple myeloma treatment, and hope. Video provided by Ivanhoe
Powered by NewsLook.com
Chronic Inflammation and Prostate Cancer

Chronic Inflammation and Prostate Cancer

Ivanhoe (Oct. 31, 2014) New information that is linking chronic inflammation in the prostate and prostate cancer, which may help doctors and patients prevent cancer in the future. Video provided by Ivanhoe
Powered by NewsLook.com
Sickle Cell: Stopping Kids’ Silent Strokes

Sickle Cell: Stopping Kids’ Silent Strokes

Ivanhoe (Oct. 31, 2014) Blood transfusions are proving crucial to young sickle cell patients by helping prevent strokes, even when there is no outward sign of brain injury. Video provided by Ivanhoe
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