Navigation Links
Irregular Heartbeat Poses Greater Stroke Risk for Women Than Men
Date:5/9/2012

By Steven Reinberg
HealthDay Reporter

TUESDAY, May 8 (HealthDay News) -- Older women with the irregular heartbeat known as atrial fibrillation face a 14 percent greater risk of stroke than men with the same condition, Canadian researchers report.

The raised risk remained higher even when women were taking the blood-thinner warfarin (Coumadin) to prevent stroke, the study authors noted.

"Previously, there was a common belief that women were undertreated, and this was the cause for the higher risk of stroke," said lead researcher Dr. Louise Pilote, director of the division of general internal medicine at McGill University and McGill University Health Center in Montreal.

"Our current paper shows that this is not the situation and, compared to men, women have higher risk for stroke regardless of warfarin prescriptions," she said. "This study should alert doctors treating patients with atrial fibrillation that women, especially older women, have a higher risk for stroke compared with men, and therefore sex should weigh in the decision to start a patient on blood-thinners and the dose should be followed closely."

The report was published in the May 9 issue of the Journal of the American Medical Association.

To see if there were differences in the risk of stroke between men and women with atrial fibrillation, Pilote's group collected data on more than 39,000 men and 44,000 women aged 65 and older.

Although both men and women were taking the blood-thinner warfarin, the researchers found more women (5.8 percent) than men (4.3 percent) suffered strokes.

The difference between men and women was particularly strong among those aged 75 and older, where women were more prone to stroke regardless of warfarin use or adherence to taking the blood-thinner, the investigators found.

Atrial fibrillation is a common cardiac arrhythmia that affects an estimated 2.2 million Americans, the researchers noted.

People with atrial fibrillation have a fivefold increase in the risk of stroke compared with the general population, which is why blood-thinners are prescribed for these patients, they explained.

Dr. Gregg Fonarow, a professor of cardiology at the University of California, Los Angeles, said that "a number of recent studies have suggested that women with atrial fibrillation are at even greater risk for stroke than men, and recent updates to stroke risk prediction tools in patients with atrial fibrillation have integrated this information."

The reasons for gender-based differences in stroke risk have not been entirely clear, but differences in use of blood-thinning treatment has been hypothesized.

"While determining the mechanisms accounting for this higher stroke risk in women requires further study, physicians should be aware of this especially high risk of stroke in women and optimize stroke prevention therapies," Fonarow said.

More information

For more on atrial fibrillation, visit the American Heart Association.

SOURCES: Louise Pilote, M.D., M.P.H., Ph.D., professor, medicine, James McGill Chair and director, division of general internal medicine, McGill University and McGill University Health Center, Montreal; Gregg Fonarow, M.D., professor, cardiology, University of California, Los Angeles; May 9, 2012, Journal of the American Medical Association


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. More Babies Today Have Irregular Head Shape: Expert
2. Stopping Blood Thinners Raises Stroke Risk for Patients With Irregular Heartbeat
3. Irregular Heartbeat May Predict Mental Decline in Some
4. Even When Silent, Irregular Heartbeat Linked to Stroke Risk
5. Nerve Snip Might Ease Dangerous Irregular Heartbeat
6. Obese Patients May Benefit the Most From Surgery for Irregular Heartbeat
7. Experimental Drug for Irregular Heart Rhythm Raises Death Risk: Study
8. Many With Irregular Heartbeat Unaware of Raised Stroke Risk
9. New Blood Thinner May Outperform Warfarin for Irregular Heartbeat
10. Study Pits New Blood Thinner Against Warfarin For Irregular Heartbeat
11. Smoking Linked to Raised Risk of Irregular Heartbeat, Study Finds
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Irregular Heartbeat Poses Greater Stroke Risk for Women Than Men
(Date:2/5/2016)... ... February 05, 2016 , ... Stuart Bentkover, MD, FACS ... PicoSure. Designed to provide the most effective tattoo removal today, Dr. Bentkover is the ... , Developed by Cynosure, the PicoSure has been approved by the Food and Drug ...
(Date:2/5/2016)... ... February 05, 2016 , ... In sleep, when the defenses of the day ... feature of patients with eating disorders is significant self-criticism, and consequently these patients experience ... are regarded as maladaptive means for coping with this unease, but also leads to ...
(Date:2/5/2016)... ... February 05, 2016 , ... On June 9-10, Las Vegas ... medical education (CME) event presented by the Association for Comprehensive Care in Rare ... ACCORD, whose mission is to provide education, tools, and resources to primary care ...
(Date:2/5/2016)... ... February 05, 2016 , ... –This week, Atascadero water heater ... having a tankless water heater. To view the report, click here or ... tankless. While each has their pros and cons, the type chosen is almost entirely ...
(Date:2/4/2016)... ... February 04, 2016 , ... Dr. Carol Francis and ... February 19-21, 2016, in Southern California . The International Hypnosis Federation 2016 Conference ... professional speakers, including Clinical Psychologist and Hypnotherapist Dr. Carol Francis (topics ...
Breaking Medicine News(10 mins):
(Date:2/4/2016)... 4, 2016 Mettler-Toledo International Inc. (NYSE: ... Provided below are the highlights: , Sales ... with the prior year.  Reported sales decreased 3% as ... , Net earnings per diluted share as reported ... year period.  Adjusted EPS was $4.65, an increase of ...
(Date:2/4/2016)... 4, 2016  AMRI (NASDAQ:  AMRI) today announced that ... and President of Pfizer Global Supply, has been elected to ... 2016. In addition, the Company announced that Mr. Gabe ... since 2010, has retired from the AMRI Board of Directors ... other business ventures.  William S. Marth , ...
(Date:2/4/2016)... Feb. 4, 2016 SONIFI™ Health, the ... today announced that MonteCedro, an innovative retirement community, ... System. The system provides a simple and intuitive ... through a tablet PC. ... system provides access to a wide spectrum of ...
Breaking Medicine Technology: