 |
|
|
|
February 1st, 2012
09:00 AM ET
Sleep apnea linked to silent strokesLisa Shives, M.D., is the founder of Northshore Sleep Medicine in Evanston, Illinois. She blogs regularly on The Chart. Read more from her at Dr. Lisa Shives’ Sleep Better Blog.
OSA is the most common form of sleep apnea, according to the National Institutes of Health. More than 12 million Americans are believed to suffer from this sleep disorder. People with sleep apnea stop breathing for 10 to 20 seconds or longer and this can happen at least 20 to 30 times an hour. In this new study, researchers at Dresden University in Germany, looked at silent strokes and the prevalence of OSA in 56 patients who had been hospitalized for a major stroke. Silent strokes have been linked to an increase risk for a major stroke. Therefore, if we can establish and then eliminate risk factors for silent stroke, theoretically, we can prevent major strokes that kill and disable. The stroke victims in the study were broken into two groups: Those who had evidence of silent strokes and those who did not. They also looked at those who had evidence of chronic damage to the small blood vessels in the brain and those who did not. They wanted to see if OSA was more prevalent in those with silent stroke and chronic vascular damage. Ninety-one percent of the study’s patients had obstructive sleep apnea, identified by an overnight sleep test. This is an extremely high prevalence rate for OSA if we consider that the rate for general population of middle age and older adults is 20 to 25%. Unfortunately, this high prevalence rate makes it difficult for researchers to study the question that most interests them: Is OSA a predictor and possibly contributing cause of silent stroke? Almost everyone in the study had OSA, whether they had evidence of silent stroke or not, so it's hard to say that OSA is an independent predictor of silent stroke. OSA is not only a risk factor for major stroke, but can be a consequence of stroke. Therefore, we cannot assume that OSA preceded the major stroke or the silent strokes. All limitations aside, this study looks at important questions. Obstructive sleep apnea is still an under-diagnosed disorder, and given the strong association with stroke, it behooves researchers to uncover any links between the two. Here’s some more on sleep apnea: OSA is defined as a collapse of the upper airway that occurs when the tissues in the throat relax with sleep. When the soft tissue in the back of the throat is relaxed, it can block the flow of air. This leads to a drop in oxygen, a rise in carbon dioxide, an increase in adrenalin, an increase in blood pressure and an increase in arousals from sleep that can be so brief that the patient is unaware of them. OSA is significant if it occurs more than 5 times per hour and is associated with daytime sleepiness, cognitive dysfunction, hypertension, and cardiovascular disease. Even in the absence of associated symptoms or diseases, if you stop breathing more and 15 times per hour, it's considered unhealthy and treatment is recommended. Moderate-to-severe OSA increases the risk not just of stroke, but also heart disease, high blood pressure, diabetes and obesity. Those who are overweight or have a small throat are at greatest risk. Men are twice as likely as women to have OSA, but after menopause that gender difference disappears and women are just as likely to have it. This could be one of the reasons why many women who had no previous trouble with sleep find that during and after menopause, their sleep is plagued with frequent awakenings. It is important to keep in mind that children and teenagers can have OSA too, often due to enlarged tonsils and can be misdiagnosed with behavioral, learning and psychiatric disorders when the root of the problem is actually something as easy to diagnose and treat as sleep apnea. The good news is that one overnight sleep study, whether in a sleep center or at home, can easily detect apnea. There are several effective types of treatment including continuous positive airway pressure (CPAP), mandibular advancing devices and Provent, a new therapy that can stent the airways using non-mechanical airflow resistance.
Next entry »EPA misses dioxin deadline
« Previous entry5 ways I tried (and failed) to kick the cancer stick
|
  About this blog
Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.
 |
|
|
|
This week, a study was presented at the American Stroke Association’s International Stroke Conference that caught my eye. It's a small study that adds further evidence to what most sleep experts already know - that obstructive sleep apnea (OSA) is linked with a high risk of having silent strokes.
http://find.cambridgesoft.com/help/cs.html?url=https://www.www.backbonehunters.com
Nice post. I learn something new and challenging on sites I stumbleupon everyday. It will always be interesting to read content from other writers and practice a little something from their websites.
http://www.dmca.com/Protection/Status.aspx?ID=edc817fd-d796-4c84-abb8-d1cb5b2e3719&refurl=http://backboneleaders.com/
You've made some good points there. I looked on the net to find out more about the issue and found most people will go along with your views on this web site.
https://service.thecloud.net/service-platform/redirect/?url=https://backboneleaders.com
http://adserving.unibet.com/redirect.aspx?pid=301&bid=4200&redirectURL=https://www.backbonehunters.com
https://www.continental-industry.com/catalogs/iap/Language/Switch?culture=en-GB&returnUrl=https://www.backboneleaders.com
An outstanding share! I have just forwarded this onto a colleague who had been doing a little homework on this. And he in fact ordered me breakfast because I found it for him... lol. So allow me to reword this.... Thank YOU for the meal!! But yeah, thanx for spending the time to discuss this subject here on your site.
http://mf10.jp/cgi-local/click_counter/click3.cgi?cnt=frontown1&url=http://fleettruckrepairshop.com/
Good site you have got here.. Itís difficult to find high quality writing like yours nowadays. I really appreciate people like you! Take care!!
http://formstableimplant.org/__media__/js/netsoltrademark.php?d=ocrvfleetservices.com/
http://www.scientificsrv.com/link/link.cgi?mode=cnt&hp=https://ocrv.mobi/
http://deancharlesassoc.com/__media__/js/netsoltrademark.php?d=fleetrepairshops.com
May I simply say what a comfort to find an individual who genuinely understands what they're talking about over the internet. You definitely understand how to bring a problem to light and make it important. More and more people need to look at this and understand this side of your story. I was surprised that you are not more popular because you surely have the gift.
http://diomico.com/__media__/js/netsoltrademark.php?d=ocrvcenter.net/
Good post. I learn something totally new and challenging on sites I stumbleupon everyday. It will always be useful to read content from other authors and use something from other web sites.
http://12monsters.com/__media__/js/netsoltrademark.php?d=fleetautorepairshop.com
http://www.kultika.de/magisches-register/index.php?id=out&seite=ocrvcenter.com
https://feedroll.com/rssviewer/feed2js.php?src=http://ocrv.store/
This blog was... how do I say it? Relevant!! Finally I've found something which helped me. Cheers!
https://sh.shulcloud.com/track.php?id=4c5c111e733449a9a439790f0d4b1431&url=https://www.orangecountyrvrepair.com/
https://naviking.localking.com.tw/about/redirect.aspx?mid=7&url=http://ocrvpaintandservice.com/
https://www.ighome.com/Redirect.aspx?url=http://ocrvmotorsports.org/
https://www.baoviet.com.vn/Redirect.aspx?url=http://ocrv.me
Hi there, just became aware of your blog through Google, and found that it
is truly informative. I am going to watch out for brussels.
I'll be grateful if you continue this in future. Many people will be benefited from
your writing. Cheers!
Way cool! Some extremely valid points! I appreciate you penning this article and also the rest of the site is also really good.
https://www.aiko.ed.jp/blog/mt4i.cgi?id=7&mode=redirect&ref_eid=3197&url=https://orangecountyrvrepair.com
http://www.sotuu.net/php/download.php?q=61lvqmkMd&e=https://ocrv.org/
https://data.giraff.io/click/na-in/@grfNA@natan.antonovich@gmail.com/?go=http://ocrvluxurycoaches.com/
Way cool! Some very valid points! I appreciate you penning this article plus the rest of the website is also really good.
http://www.hr-journal.ru/out.php?link=https://ocrvcenter.biz/
I absolutely love your site.. Excellent colors & theme. Did you develop this site yourself? Please reply back as Iím trying to create my own personal blog and want to find out where you got this from or just what the theme is named. Many thanks!
https://www.runreg.com/Services/RedirectEmail.aspx?despa=www.ocrvcenter.co&emid=7693&edid=2352980&secc=2345271
Having read this I believed it was extremely informative. I appreciate you finding the time and effort to put this short article together. I once again find myself personally spending a lot of time both reading and leaving comments. But so what, it was still worth it!
http://newmember.funtown.com.tw/FuntownADS/adclick.axd?id=958250e1-b0af-4645-951c-0ff3883274ab&url=http://ocrvcenter.org/
Hi, I do believe this is a great blog. I stumbledupon it 😉 I may return once again since I book marked it. Money and freedom is the best way to change, may you be rich and continue to help others.
https://transtats.bts.gov/exit.asp?url=https://ocrvmotorcoaches.com
I couldnít refrain from commenting. Very well written!
http://clients3.weblink.com.au/clients/aluminalimited/priceframe1.aspx?link=https://ocrv.org/
There's definately a great deal to know about this topic. I like all the points you have made.
https://giantnoise-dot-yamm-track.appspot.com/Redirect?ukey=1Sjhx0yMES6kGhyzSwbiri5rHbOwB17B8-WSnGn0ahiI-1850131864&key=YAMMID-28758765&link=http://ocrv.me/
Saved as a favorite, I love your site!
https://katstat.ru/go.php?url=http://ocrvshop.com/holostyak-stb-2021
http://www.dew-code.com/__media__/js/netsoltrademark.php?d=ocrv.biz
I need to to thank you for this excellent read!! I certainly enjoyed every bit of it. I have got you saved as a favorite to check out new things you postÖ
http://bk.sanw.net/link.php?url=https://ocrvcenter.com
Greetings! Very helpful advice within this post! It is the little changes which will make the greatest changes. Thanks a lot for sharing!
https://www.faseb.org/pdfviewer?loadthis=http://ocrv.online
I need to to thank you for this very good read!! I certainly loved every bit of it. I have got you saved as a favorite to check out new stuff you postÖ
https://www.vinteger.com/scripts/redirect.php?url=https://www.ocrvart.com
Spot on with this write-up, I truly believe this website needs a great deal more attention. Iíll probably be back again to read through more, thanks for the info!
http://atsecman.golookup.com/track/?affid=32&ref=https://campervanrepairshop.com
Right here is the perfect web site for anyone who would like to understand this topic. You know a whole lot its almost tough to argue with you (not that I personally would want toÖHaHa). You certainly put a new spin on a topic which has been discussed for ages. Wonderful stuff, just wonderful!
https://svb.trackerrr.com/pingback.php?url=fleetservicerepairshop.com
This web site really has all of the information and facts I wanted concerning this subject and didnít know who to ask.
http://changing-leaves.com/__media__/js/netsoltrademark.php?d=campervanrepairshop.com
There is certainly a lot to know about this subject. I like all of the points you've made.
http://www.smyw.org/cgi-bin/atc/out.cgi?id=312&u=https://ocrv.vip/
does erectile dysfunction affect fertility https://pharmaceptica.com/
Good post. I learn something totally new and challenging on websites I stumbleupon everyday. It will always be interesting to read through content from other authors and use a little something from other sites.
http://s03.megalodon.jp/?url=https://customcampervans.com
Greetings! Very helpful advice in this particular post! It is the little changes that make the largest changes. Thanks for sharing!
http://home.putclub.com/link.php?url=https://orangecountyrvrepair.com/
Spot on with this write-up, I honestly believe this website needs a great deal more attention. Iíll probably be returning to see more, thanks for the information!
http://biyoumatome.info/?wptouch_switch=desktop&redirect=http3A2F2Focrvfleetservices.com
Hi, I do think this is a great web site. I stumbledupon it 😉 I am going to return yet again since i have book-marked it. Money and freedom is the best way to change, may you be rich and continue to guide others.
http://www.nastyczechs.com/cgi-bin/at3/out.cgi?id=377&tag=toptop&trade=http://ocrvempire.com/
I blog often and I truly thank you for your information. This article has really peaked my interest. I'm going to book mark your blog and keep checking for new information about once a week. I opted in for your Feed as well.
http://allphotolenses.com/link?go=https://ocrv.pro/
http://showb.com/search/ranking.cgi?mode=link&id=7083&url=http://ocrv.club
http://www.propool.ru/redirect.php?url=https://campervanrepairshop.com
I really love your site.. Pleasant colors & theme. Did you create this web site yourself? Please reply back as Iím trying to create my very own website and would love to find out where you got this from or exactly what the theme is named. Cheers!
http://kcm.kr/jump.php?url=https://ocrvmotorcoaches.com/
That is a good tip particularly to those new to the blogosphere. Simple but very precise informationÖ Appreciate your sharing this one. A must read article!
http://www.dollhousefootwear.com/__media__/js/netsoltrademark.php?d=ocrvcenter.com
https://www.sfcun.com/plugin.php?id=we_url&url=curtismelancon.com