Featured Research

from universities, journals, and other organizations

Moderate To Severe Sleep-disordered Breathing Can Lead To Stroke

Date:
December 2, 2005
Source:
American Thoracic Society
Summary:
Individuals who experience moderate to severe sleep-disordered breathing are four times more likely to have a stroke during the next four years than those who did not suffer from the problem.

Individuals who experience moderate to severe sleep-disordered breathing are four times more likely to have a stroke during the next four years than those who do not suffer from the problem.

These findings were reported in the first issue of the December 2005 American Journal of Respiratory and Critical Care Medicine, published by the American Thoracic Society.

T. Douglas Bradley, M.D., of the Toronto General Hospital/ University Health Network, Toronto, Canada, together with four associates, analyzed research results from 1,475 participants who were tested for sleep-disordered breathing at the University of Wisconsin General Clinical Research Center, Madison. Follow-up visits were conducted over the next 4, 8, and 12 years. Among the group, 21 individuals suffered a first-ever stroke at an average age of 53.

"Our longitudinal analysis provides the first prospective evidence that sleep-disordered breathing after adjustment for age and sex is related to significantly increased odds of suffering a stroke over the next 4 years," said Dr. Bradley. "Although our analysis cannot shed light on the pathway by which sleep-disordered breathing affects stroke risk, these novel findings add justification to considering the problem as a condition that either precedes or may contribute to the development of stroke."

Sleep-disordered breathing is one of a group of serious sleep disorders in which a sleeping person repeatedly stops breathing long enough to reduce the amount of oxygen in the blood and to increase the amount of carbon dioxide. Researchers categorize its severity by counting the "events" per hour that a person stops breathing for 10 seconds or more. Moderate to severe sleep disordered breathing is defined as 20 or more "events" per hour.

During the study and follow-up visits, participants underwent a laboratory sleep test (polysomnography), along with measurement of blood pressure and serum cholesterol levels, together with a check of other stroke risk factors such as body mass index.

Among the 1,475 participants, 76 percent (1,121) did not have sleep-disordered breathing (less than 5 "events" per hour), 17 percent (251) had a mild disorder (5 to 19 "events"), and 7 percent (103) had a moderate to severe problem.

Dr. Bradley noted that stroke is an important public health issue since it constitutes the commonest cause of long-term disability in the United States. It affects more than 1.1 million persons, with direct and indirect costs estimated at $56.8 billion for 2005.

In the future, Dr. Bradley believes that randomized clinical trials will be required to determine whether treatment for sleep-disordered breathing could either prevent stroke or improve its outcome.



Story Source:

The above story is based on materials provided by American Thoracic Society. Note: Materials may be edited for content and length.


Cite This Page:

American Thoracic Society. "Moderate To Severe Sleep-disordered Breathing Can Lead To Stroke." ScienceDaily. ScienceDaily, 2 December 2005. <www.sciencedaily.com/releases/2005/12/051202132837.htm>.
American Thoracic Society. (2005, December 2). Moderate To Severe Sleep-disordered Breathing Can Lead To Stroke. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2005/12/051202132837.htm
American Thoracic Society. "Moderate To Severe Sleep-disordered Breathing Can Lead To Stroke." ScienceDaily. www.sciencedaily.com/releases/2005/12/051202132837.htm (accessed July 30, 2014).

Share This




More Mind & Brain News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Dieting At A Young Age Might Lead To Harmful Health Habits

Dieting At A Young Age Might Lead To Harmful Health Habits

Newsy (July 30, 2014) Researchers say women who diet at a young age are at greater risk of developing harmful health habits, including eating disorders and alcohol abuse. Video provided by Newsy
Powered by NewsLook.com
It's Not Just Facebook: OKCupid Experiments With Users Too

It's Not Just Facebook: OKCupid Experiments With Users Too

Newsy (July 29, 2014) If you've been looking for love online, there's a chance somebody has been looking at how you're looking. Video provided by Newsy
Powered by NewsLook.com
How Your Face Can Leave A Good Or Bad First Impression

How Your Face Can Leave A Good Or Bad First Impression

Newsy (July 29, 2014) Researchers have found certain facial features can make us seem more attractive or trustworthy. Video provided by Newsy
Powered by NewsLook.com
Losing Sleep Leaves You Vulnerable To 'False Memories'

Losing Sleep Leaves You Vulnerable To 'False Memories'

Newsy (July 27, 2014) A new study shows sleep deprivation can make it harder for people to remember specific details of an event. Video provided by Newsy
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:
from the past week

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