Featured Research

from universities, journals, and other organizations

Effects of 'mini stroke' can shorten life expectancy

Date:
November 11, 2011
Source:
American Heart Association
Summary:
Having a transient ischemic attack (TIA), or "mini stroke," could lower your life expectancy, according to new research. Survival rates after TIA were 20 percent lower than expected nine years later, compared to the general population. The long-term effects of TIA were most serious for patients older than 65 and for patients with previous history of stroke and heart problems.

Having a transient ischemic attack (TIA), or "mini stroke," can reduce your life expectancy by 20 percent, according to a new study in Stroke: Journal of the American Heart Association.

Related Articles


"People experiencing a TIA won't die from it, but they will have a high risk of early stroke and also an increased risk of future problems that may reduce life expectancy," said Melina Gattellari, Ph.D., senior lecturer at the School of Public Health and Community Medicine in The University of New South Wales, Sydney and Ingham Institute in Liverpool, Australia.

"Our findings suggest that patients and doctors should be careful to intensely manage lifestyle and medical risk factors for years after a transient ischemic attack."

The statistical analysis is the first to comprehensively quantify the impact of hospital-diagnosed TIA on life expectancy.

Researchers identified 22,157 adults hospitalized with a TIA from July 2000 to June 2007 in New South Wales, Australia, and tracked their medical records for a minimum two years (median 4.1 years). They gathered death registry data for the area through June 2009 and compared death rates in the study population to those in the general population. Median ages were 78 for female patients and 73 for male patients; 23.9 percent were younger than 65 and 19.4 percent were older than 85.

At one year after hospitalization, 91.5 percent of TIA patients were still living, compared to 95 percent expected survival in the general population. At five years, survival of TIA patients was 13.2 percent lower than expected -- 67.2 percent were still alive, compared to an expected survival of 77.4 percent.

By the end of the study, at the nine-year mark, survival of TIA patients was 20 percent lower than expected.

Increasing age was associated with an increasing risk of death compared to the matched population. TIA had only minimal effect on patients younger than 50, but significantly reduced life expectancy in those older than 65. Compared to patients younger than 50, relative risk of death for patients 75-84 was 7.77 times higher and 11.02 times higher for those 85 and older.

"We thought the reverse may be true -- that survival rates in older TIA patients would be more like other older people, who, although not affected by TIA, are affected by other conditions that may influence their survival," Gattellari said. "But even a distant history of TIA is major determinant of prognosis; certainly, the risks faced by TIA patients go well beyond their early stroke risk."

Researchers also examined TIA patients' medical records for other common health risks:

  • Congestive heart failure was associated with 3.3 times more risk of dying.
  • Atrial fibrillation was associated with twice the risk of dying.
  • Prior hospitalization for stroke meant 2.63 times the risk of dying compared to patients without it; further, this effect grew over time, peaking at 5.01 times more risk three years after TIA admission.

In general, adults with a history of TIA can maximize their chances of living a long life by adopting healthy lifestyle habits, such as exercising daily, maintaining a healthy weight, quitting smoking and eating healthy, Gattellari said.

Co-authors are Chris Goumas, M.P.H.; Frances Garden, M.Biost.; and John M. Worthington, M.B.B.S. Author disclosures are on the manuscript.The Clinical Excellence Commission and the Commonwealth Department of Health and Ageing partly funded the study.


Story Source:

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


Journal Reference:

  1. Melina Gattellari, Chris Goumas, Frances Garden, John M. Worthington. Relative Survival After Transient Ischaemic Attack: Results From the A Program of Research Informing Stroke Management (PRISM) Study. Stroke, 2011; DOI: 10.1161/STROKEAHA.111.636233

Cite This Page:

American Heart Association. "Effects of 'mini stroke' can shorten life expectancy." ScienceDaily. ScienceDaily, 11 November 2011. <www.sciencedaily.com/releases/2011/11/111110191946.htm>.
American Heart Association. (2011, November 11). Effects of 'mini stroke' can shorten life expectancy. ScienceDaily. Retrieved January 27, 2015 from www.sciencedaily.com/releases/2011/11/111110191946.htm
American Heart Association. "Effects of 'mini stroke' can shorten life expectancy." ScienceDaily. www.sciencedaily.com/releases/2011/11/111110191946.htm (accessed January 27, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Tuesday, January 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Shark Bite Victim Making Amazing Recovery

Shark Bite Victim Making Amazing Recovery

AP (Jan. 27, 2015) A Texas woman who lost more than five pounds of flesh to a shark in the Bahamas earlier this month could be released from a Florida hospital soon. Experts believe she was bitten by a bull shark while snorkeling. (Jan. 27) Video provided by AP
Powered by NewsLook.com
Ebola Mistakes Should Serve a Lesson Says WHO

Ebola Mistakes Should Serve a Lesson Says WHO

AFP (Jan. 25, 2015) The World Health Organization&apos;s chief on Sunday admitted the UN agency had been caught napping on Ebola, saying it should serve a lesson to avoid similar mistakes in future. Duration: 00:55 Video provided by AFP
Powered by NewsLook.com
Disneyland Measles Outbreak Spreads To 5 States

Disneyland Measles Outbreak Spreads To 5 States

Newsy (Jan. 24, 2015) Much of the Disneyland measles outbreak is being blamed on the anti-vaccination movement. The CDC encourages just about everyone get immunized. Video provided by Newsy
Powered by NewsLook.com
Growing Measles Outbreak Worries Calif. Parents

Growing Measles Outbreak Worries Calif. Parents

AP (Jan. 23, 2015) Public health officials are rushing to contain a measles outbreak that has sickened 70 people across 6 states and Mexico. The AP&apos;s Raquel Maria Dillon has more. (Jan. 23) Video provided by AP
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:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

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