Featured Research

from universities, journals, and other organizations

One in seven strokes occurs during sleep, many go without clot-busting treatment

Date:
May 9, 2011
Source:
American Academy of Neurology
Summary:
Approximately 14 percent of all strokes occur during sleep, preventing many from getting clot-busting treatment, according to a new study.

Approximately 14 percent of all strokes occur during sleep, preventing many from getting clot-busting treatment, according to a study published in the May 10, 2011, print issue of Neurology, the medical journal of the American Academy of Neurology.

Related Articles


"Because the only treatment for ischemic stroke must be given within a few hours after the first symptoms begin, people who wake up with stroke symptoms often can't receive the treatment since we can't determine when the symptoms started," said study author Jason Mackey, MD, of the University of Cincinnati and a member of the American Academy of Neurology. "Imaging studies are being conducted now to help us develop better methods to identify which people are most likely to benefit from the treatment, even if symptoms started during the night."

The study examined all cases of ischemic stroke in people age 18 and older seen in hospital emergency departments in the Greater Cincinnati/Northern Kentucky region over one year. The majority of strokes are ischemic strokes caused by blocked blood flow in the brain.

Of the 1,854 ischemic strokes in the study, 273, or 14 percent, were "wake-up strokes," where the person woke up with stroke symptoms. By extrapolating that number to the general U.S. population, the researchers estimate that approximately 58,000 people in the United States go to the emergency department with a wake-up stroke in a year.

The researchers compared those with wake-up strokes to those who were awake when their stroke symptoms started. There were no differences between the two groups in terms of sex, whether they were married or were living with someone, and their stroke risk factors such as high blood pressure, diabetes, smoking or high cholesterol.

There were minor statistically significant differences in age and the severity of the stroke. People with wake-up strokes were an average of 72 years old, compared to 70 for non-wake-up strokes. Those with wake-up strokes had an average score of four on a test of stroke severity, compared to a three for those with non-wake-up strokes. Scores ranging from one to four indicate mild strokes.

The researchers also analyzed whether those with wake-up strokes would have been eligible for the clot-busting drug tissue plasminogen activator, or tPA, if the time of stroke onset had been available. Of the 273 wake-up strokes, at least 98 would have been eligible for treatment.

"This is a group of patients that should be a focus for future studies," Mackey said. "It's likely that some of these strokes occurred immediately prior to awakening, and people would benefit from treatment."



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. Jason Mackey and Dawn Kleindorfer. Stroke centers and quality of stroke care: How are we doing? Neurology, May 4, 2011 WNL.0b013e31821e55c2 [link]

Cite This Page:

American Academy of Neurology. "One in seven strokes occurs during sleep, many go without clot-busting treatment." ScienceDaily. ScienceDaily, 9 May 2011. <www.sciencedaily.com/releases/2011/05/110509161632.htm>.
American Academy of Neurology. (2011, May 9). One in seven strokes occurs during sleep, many go without clot-busting treatment. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2011/05/110509161632.htm
American Academy of Neurology. "One in seven strokes occurs during sleep, many go without clot-busting treatment." ScienceDaily. www.sciencedaily.com/releases/2011/05/110509161632.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Buzz60 (Dec. 19, 2014) A double-amputee makes history by becoming the first person to wear and operate two prosthetic arms using only his mind. Jen Markham has the story. Video provided by Buzz60
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