Featured Research

from universities, journals, and other organizations

Stroke survivors with irregular heartbeat may have higher risk of dementia

Date:
March 8, 2011
Source:
American Academy of Neurology
Summary:
Stroke survivors who have an irregular heartbeat called atrial fibrillation may be at higher risk of developing dementia than stroke survivors who do not have the heart condition, according to new research.

Stroke survivors who have an irregular heartbeat called atrial fibrillation may be at higher risk of developing dementia than stroke survivors who do not have the heart condition, according to research published in the March 8, 2011, print issue of Neurology, the medical journal of the American Academy of Neurology.

Atrial fibrillation affects more than two million Americans, and it is more common as people age. About 15 percent of strokes occur in people with atrial fibrillation. The heart's two upper chambers do not beat effectively in the condition, resulting in an irregular heart rhythm.

The research analyzed all of the available studies where people with atrial fibrillation were compared to people without atrial fibrillation and followed to determine who developed dementia over time.

A total of 15 studies were analyzed, with 46,637 participants with an average age of 72. The research found that stroke survivors with atrial fibrillation were 2.4 times more likely to develop dementia than stroke survivors who did not have the heart condition. About 25 percent of patients with stroke and atrial fibrillation were found to have developed dementia during follow-up.

"These results may help us identify potential treatments that could help delay or even prevent the onset of dementia," said study author Phyo Kyaw Myint, MD, of the University of East Anglia in Norfolk, U.K. "Options could include more rigorous management of cardiovascular risk factors or of atrial fibrillation, particularly in stroke patients."

Myint noted that the research on whether people who have atrial fibrillation but have not had a stroke have any greater risk of dementia was not conclusive.


Story Source:

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


Journal Reference:

  1. C.S. Kwok et al. Atrial fibrillation and incidence of dementia A systematic review and meta-analysis. Neurology, March 8, 2011 vol. 76 no. 10 914-922 DOI: 10.1212/WNL.0b013e31820f2e38

Cite This Page:

American Academy of Neurology. "Stroke survivors with irregular heartbeat may have higher risk of dementia." ScienceDaily. ScienceDaily, 8 March 2011. <www.sciencedaily.com/releases/2011/03/110307161849.htm>.
American Academy of Neurology. (2011, March 8). Stroke survivors with irregular heartbeat may have higher risk of dementia. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2011/03/110307161849.htm
American Academy of Neurology. "Stroke survivors with irregular heartbeat may have higher risk of dementia." ScienceDaily. www.sciencedaily.com/releases/2011/03/110307161849.htm (accessed July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

House Republicans Vote to Sue Obama Over Healthcare Law

House Republicans Vote to Sue Obama Over Healthcare Law

Reuters - US Online Video (July 31, 2014) The Republican-led House of Representatives votes to sue President Obama, accusing him of overstepping his executive authority in making changes to the Affordable Care Act. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Despite Health Questions, E-Cigs Are Beneficial: Study

Despite Health Questions, E-Cigs Are Beneficial: Study

Newsy (July 31, 2014) Citing 81 previous studies, new research out of London suggests the benefits of smoking e-cigarettes instead of regular ones outweighs the risks. Video provided by Newsy
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
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