Who has greater risk after a mini-stroke?

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That first "mini-stroke" appears to be more of a non-malignant event for women than men, as per scientists at the University of Alabama at Birmingham (UAB) and Yale University. The findings underscore the need to continue researching gender differences in disease prevention and follow-up care.

Data show 30 days after a transient ischemic attack (TIA), women are 30 percent less likely to have a stroke, 14 percent less likely to have heart-related problems and 26 percent less likely to die than men of the same age, the scientists said. TIAs are called mini-strokes because they produce stroke-like symptoms but rarely cause lasting damage.

The study appears online in the journal Stroke and was presented at the American Stroke Association International Stroke Conference in San Diego.

"We know that a number of TIA patients show up at medical centers with heart problems within a month of the first event, and even more show up within a year," said Virginia Howard, Ph.D., an associate professor in the UAB School of Public Health and a co-author of study. "Now we're seeing that warning signal may mean differing things for different people depending on gender, age and a number of other factors".

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Besides the post-30-day period, the study authors analyzed the one-year-period after TIA and found women were 15 percent less likely to have a stroke, 19 percent less likely to have a cardiac event and 22 percent less likely to die than men.

Scientists evaluated the records of more than 122,000 patients aged 65 and older who were hospitalized for a TIA in 2002.

TIAs occur when a blood clot temporarily blocks an artery and a part of the brain fails to get needed blood. Most strokes are not preceded by a TIA, but more than a third of TIA patients will later have a stroke, as per the American Stroke Association.

While additional research is needed to better understand the reasons for the gender-related difference in health outcomes, the findings could help improve prevention and heart-related care for both men and women, said Judith H. Lichtman, Ph.D., an associate professor at Yale School of Public Health and the study's main author.

"Identifying opportunities to improve primary and secondary stroke prevention is increasingly important as our population ages and is at greater risk," Lichtman said.

The research was a partnership between UAB, Yale and the Duke Stroke Center in Durham, North Carolina. It was funded by the National Institute of Neurological Disorders and Stroke.

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