Featured Research

from universities, journals, and other organizations

Heart Failure Patients With Sleep Apnea At Greater Risk Of Death, According To Study

Date:
May 15, 2007
Source:
American College Of Cardiology
Summary:
Researchers evaluated the potentially deadly effects of sleep apnea in patients with heart failure. Sleep apnea is a disorder in which the brain fails to send messages to the respiratory muscles, causing breathing to stop for short periods throughout the night.

Researchers from the Veterans Affairs Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, evaluated the potentially deadly effects of sleep apnea in patients with heart failure. Sleep apnea is a disorder in which the brain fails to send messages to the respiratory muscles, causing breathing to stop for short periods throughout the night.

The largest of its kind, the study recruited 88 patients with heart failure to spend 2 nights being evaluated in a sleep laboratory. Researchers documented the number of times breathing completely stopped during sleep (apnea) or became shallow for at least 10 seconds (hypopnea). Patients who experienced 5 or more instances of apnea or hypopnea per hour were diagnosed with clinically important sleep apnea.

Over a follow-up that averaged 51 months, patients with central sleep apnea were far more likely to die than those who breathed normally during sleep. The median survival was 45 months in patients with central sleep apnea, as compared to 90 months in those without a sleep disorder. When multiple patient characteristics were taken into account, only 3 were independently linked to an increased risk of death: central sleep apnea, a poorly functioning right ventricle, and a low blood pressure during relaxation of the heart.

"The results of this study are particularly important because previous studies of survival in patients with heart failure, including those considering the role of angiotensin-converting enzyme inhibitors or beta blockers, have not routinely included sleep studies; therefore, the impact of sleep apnea on survival was not known," the authors noted.


Story Source:

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


Cite This Page:

American College Of Cardiology. "Heart Failure Patients With Sleep Apnea At Greater Risk Of Death, According To Study." ScienceDaily. ScienceDaily, 15 May 2007. <www.sciencedaily.com/releases/2007/05/070514182205.htm>.
American College Of Cardiology. (2007, May 15). Heart Failure Patients With Sleep Apnea At Greater Risk Of Death, According To Study. ScienceDaily. Retrieved August 1, 2014 from www.sciencedaily.com/releases/2007/05/070514182205.htm
American College Of Cardiology. "Heart Failure Patients With Sleep Apnea At Greater Risk Of Death, According To Study." ScienceDaily. www.sciencedaily.com/releases/2007/05/070514182205.htm (accessed August 1, 2014).

Share This




More Mind & Brain News

Friday, August 1, 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