Showing posts with label stroke. Show all posts
Showing posts with label stroke. Show all posts

Friday, 21 March 2014

Most Stroke Signs Unrecognized by Most Women

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Published: Mar 21, 2014

Knowledge of the signs of stroke appears to be low among U.S. women, particularly Hispanics, a survey showed.

Slightly more than half of the participants (51%) identified sudden one-sided weakness or numbness of the face or a limb as a stroke warning sign, but the rest of the warning signs were tagged by fewer than half, according to Heidi Mochari-Greenberger, PhD, MPH, of Columbia University Medical Center in New York City.

Those included difficulty speaking or understanding speech (identified by 44% overall but by a lower percentage in Hispanic versus white women), sudden severe headache (23%), unexplained dizziness (20%), and sudden loss of at least some vision (18%), she reported at the American Heart Association's Epidemiology and Prevention/Nutrition, Physical Activity, and Metabolism meeting in San Francisco.

The vast majority of the women (84%), however, recognized that the first thing to do when experiencing signs of a stroke is to call 911.

The results -- which were published simultaneously online in Stroke: Journal of the American Heart Association -- "suggest that efforts to improve recognition of stroke warning signs [have] the potential to reduce treatment delay and potentially improve outcomes in women," Mochari-Greenberger told MedPage Today.

Women are hit particularly hard by stroke, which represents the fourth leading cause of death in the U.S. overall, but the third leading cause in women. And compared with men, more women have strokes each year, which is related to a longer lifespan and the increased risk of stroke at older ages.

To find out how aware women are of the signs of stroke, the researchers examined data from an American Heart Association survey on cardiovascular disease awareness that was conducted in 2012. The current analysis included a nationally representative sample of 1,205 women ages 25 and older; 54% were white, 17% were black, 17% were Hispanic, and 12% were identified as other.

Although it varied by specific stroke sign, knowledge was generally low, and 20% of women couldn't name even a single sign.

"The ability to recognize stroke warning signs at their onset is associated with more rapid access to emergency care, which may result in decreased stroke-related morbidity and mortality," the researchers wrote in their paper. "Addressing gaps in women's knowledge related to stroke warning signs may be a key initial step toward improving outcomes and reducing disparities."

Public health awareness campaigns can help, Mochari-Greenberger said, pointing to the AHA/American Stroke Association effort to improve recognition of the signs of stroke centered around the acronym FAST, which stands for Face drooping, Arm weakness, Speech difficulty, and Time to call 911.

And the lower awareness among Hispanic women might be addressed with a change in terminology, according to Ileana Piña, MD, MPH, of Montefiore Medical Center in New York City, who noted in comments recorded for the AHA that the word "stroke" is difficult to translate into Spanish.

"Calling it a 'brain attack' may be one way to get to it," she said.

"Making that comparison [to heart attack] to the public I think is important," she said. "Just like we're so worried about chest pain and getting patients ... quickly into the emergency department so that they don't lose their heart muscle, this is very similar. If you recognize the signs of this brain attack, getting the patient in sooner is saving brain tissue."

The study was supported, in part, by the National Institutes of Health.

The authors disclosed no relevant relationships with industry.

Todd Neale, MedPage Today Staff Writer, got his start in journalism at Audubon Magazine and made a stop in directory publishing before landing at MedPage Today. He received a B.S. in biology from the University of Massachusetts Amherst and an M.A. in journalism from the Science, Health, and Environmental Reporting program at New York University.

Tuesday, 29 October 2013

Ultrasound Device May Improve Emergency Stroke Care: Study

News Picture: Ultrasound Device May Improve Emergency Stroke Care: Study

FRIDAY, Oct. 25 (HealthDay News) -- The use of a hands-free ultrasound device in combination with a clot-busting drug appears safe for patients with a common kind of stroke, a small, new study finds.

An ischemic stroke occurs when blood flow to the brain is blocked. When this happens, the hands-free ultrasound device is placed on the patient's head and delivers ultrasound to boost the effectiveness of the clot-busting medicine tPA (tissue plasminogen activator).

The new trial was funded by the U.S. National Institutes of Health and was published Oct. 24 in the journal Stroke.

"Our goal is to open up more arteries in the brain and help stroke patients recover," study author Dr. Andrew Barreto, an assistant professor of neurology in the Stroke Program at the University of Texas Health Science Center at Houston, said in a journal news release.

Unlike the traditional hand-held ultrasound device that's aimed at a blood clot, the hands-free version uses 18 separate probes and showers the deep areas of the brain where large blood clots cause severe strokes, the researchers said.

The new study included 12 men and eight women with an average age of 63. The patients had moderately severe ischemic strokes and received tPA within four and a half hours after the start of their stroke symptoms. They also received two hours of exposure to the hands-free ultrasound device.

Ninety days after the combined treatment, 65 percent of the patients had either returned home or were in post-stroke rehabilitation. A quarter of the patients had no stroke-related disability, and one patient had slight disability.

"This technology would have a significant impact on patients, families and society if we could improve outcomes by another 5 percent to 10 percent by adding ultrasound to patients who've already received tPA," Barreto said.

Barreto's team has launched an international study of the ultrasound approach combined with the clot buster, to be conducted in 830 ischemic stroke patients.

Two stroke experts not connected to the study said the device shows promise.

"The potential benefit of this technology is its simplicity and potential for widespread use within primary stroke centers that are the first to see the majority of ischemic stroke patients," said Dr. Jeffrey Katz, chief of vascular neurology at North Shore University Hospital in Manhasset, N.Y.

Katz said that if the data from trials continues to be positive, "we may finally have the first proven adjunct to intravenous tPA that has the potential for mass use because it does not rely on the availability of trained operators or expensive specialized facilities."

Dr. Sampson Davis, an emergency medicine physician at St. Michael's Medical Center in Newark, N.J., added: "Because I am the first doctor to encounter stroke patients, I'm excited about medical technology and thrilled to see such a timely study unfolding."

"Although more research steps are needed, including the aforementioned larger patient size, this project holds promise and is a step in the right direction in treating stroke," Davis said.

-- Robert Preidt MedicalNews
Copyright © 2013 HealthDay. All rights reserved. SOURCES: Jeffrey Katz, M.D., chief of vascular neurology, North Shore University Hospital, Manhasset, N.Y.; Sampson Davis, M.D., emergency medicine physician, St. Michaels Medical Center, Newark, N.J.; Stroke, news release, Oct. 24, 2013



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