Navigation Links
Sleep Apnea Episodes May Trigger Irregular Heartbeat
Date:10/26/2009

Study found 18-fold higher incidence of atrial fibrillation, other arrhythmias

MONDAY, Oct. 26 (HealthDay News) -- New research provides the first hard evidence that the characteristic snorting and gasping of sleep apnea can spur potentially fatal heartbeat abnormalities.

Previous studies have suggested an association between sleep apnea and cardiac arrhythmias but they had not established a cause-and-effect relationship, said study senior author Dr. Susan Redline, a professor of medicine at Case Western Reserve University in Cleveland.

But in this research, "we studied the specific risk of cardiac arrhythmias and sleep apnea -- do these events act as a trigger for cardiac abnormalities?" she said. "And we established that there is a close temporal relationship."

The study will be published in the Nov. 3 issue of the Journal of the American College of Cardiology.

Redline and colleagues at sleep research centers across the country studied nearly 2,900 polysomnograms -- detailed sleep-time recordings of biophysical activities of the brain, muscles and heart of more than 2,500 people participating in the nationwide Sleep Heart Health Study. Specifically, the researchers compared heartbeat patterns seen during normal breathing against those occurring within 90 seconds of a sleep apnea episode.

They detected 62 arrhythmias occurring in 57 people with a wide range of sleep apnea disorders. Overall, the study found that the odds of experiencing a heartbeat abnormality were 18 times higher immediately after an episode of sleep apnea than during periods of normal breathing of sleep.

The researchers focused on two dangerous heartbeat abnormalities: atrial fibrillation, a disordered fluttering of the two upper chambers of the heart (a major risk factor for stroke); and ventricular tachycardia, a too-fast beating of the lower blood-pumping chambers that can cause sudden death.

One important finding of the study was that these abnormal heart rhythms were not linked to the severity of a person's sleep apnea, Redline said. "The study did look to see whether more intense sleep apnea increased the risk of arrhythmias," she said. "In fact, most of the arrhythmias occurred in people with mild-to-moderate sleep apnea."

The researchers stressed that abnormal heartbeats were relatively rare, with sleep apnea increasing their incidence by one for every 40,000 breathing disturbances. But the potentially serious effect of those heartbeat errors requires alertness in detecting sleep apnea, Redline said.

Conversely, the study suggests that doctors should be alert for the possibility of sleep apnea in people who have heart rhythm abnormalities, Redline said. "Those who present with arrhythmias should be screened for apnea," she advised.

For now, the study is more of scientific interest than immediate medical application, added study author Dr. Ken Monahan, an assistant professor of medicine. "It adds additional evidence to what was already suggested in the literature," he said.

It is important to note that the relationship established in the new study, "was built on the work of others," he said. "It raises a lot of very interesting questions about what the ultimate clinical applications of other findings may be."

More information

Find out more about sleep apnea at the U.S. National Library of Medicine.



SOURCES: Susan Redline, M.D., professor, medicine, Case Western Reserve University, Cleveland; Ken Monahan, M.D., assistant professor, medicine, Vanderbilt University, Nashville; Nov. 3, 2009, Journal of the American College of Cardiology


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Circadiance Launches NEW Zzzephyr Seal(TM) for Its SleepWeaver(TM) ADVANCE Mask - Now Available in Three Colors
2. Users of Gene-Eden, a Natural Antiviral, Report less Sleeping Problems in a Recent Study
3. Video: Philips Unveils Intelligent Sleep Apnea Therapy System to Home Healthcare Industry
4. Sleep HealthCenters Now Accepting Students for A-STEP Sleep Technologist Program
5. Oropharyngeal cancer patients experience post-surgery sleep apnea
6. Stress, fatigue plague patients with allergic rhinitis and obstructive sleep apnea
7. Ten from Two: Top Sleep and Beauty Tips from the Experts
8. Older Women May Sleep Better Than Men
9. Alcoholisms effect on sleep persists during long periods of sobriety
10. Study shows that elderly women sleep better than they think, men sleep worse
11. Sleep Center at Baylor Dallas One of Select Centers in North Texas to Receive Accreditation
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... , ... June 25, 2016 , ... The temporary closing of Bruton Memorial Library on ... Observer , brings up a new, often overlooked aspect of head lice: the parasite’s ability ... fumigation is not a common occurrence, but a necessary one in the event that lice ...
(Date:6/25/2016)... ... June 25, 2016 , ... On Friday, June 10, ... Bronze Wellness at Work award to iHire in recognition of their exemplary accomplishments in ... the 7th annual Maryland Workplace Health & Wellness Symposium at the BWI Marriott in ...
(Date:6/24/2016)... , ... June 24, 2016 , ... Marcy was in a crisis. Her son James, ... out at his family verbally and physically. , “When something upset him, he couldn’t control ... use it. He would throw rocks at my other children and say he was going ...
(Date:6/24/2016)... ... 24, 2016 , ... Topical BioMedics, Inc, makers of Topricin and MyPainAway Pain Relief Products, join ... wage raise to $12 an hour by 2020 and then adjusting it yearly to increase ... of the minimum wage, assure the wage floor does not erode again, and make future ...
(Date:6/24/2016)... ... 2016 , ... Strategic Capital Partners, LLC (SCP) in concert ... capital for emerging technology companies. SCP has delivered investment events and professional ... than a million dollars of capital investment for five companies. The ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... Mass. , June 24, 2016   Pulmatrix, ... pharmaceutical company developing innovative inhaled drugs, announced today that ... Russell Investments reconstituted its comprehensive set of ... "This is an important milestone for Pulmatrix," ... will increase shareholder awareness of our progress in developing ...
(Date:6/23/2016)... , June 23, 2016  MedSource announced today ... its e-clinical software solution of choice.  This latest ... possible value to their clients by offering a ... preferred relationship establishes nowEDC as the EDC platform ... MedSource,s full-service clients.  "nowEDC has long been a ...
(Date:6/23/2016)... June 23, 2016 Research and ... Excipients Market by Type (Organic Chemical (Sugar, Petrochemical, Glycerin), ... Topical, Coating, Parenteral) - Global Forecast to 2021" ... The global pharmaceutical excipients market is projected ... CAGR of 6.1% in the forecast period 2016 to ...
Breaking Medicine Technology: