Aspirin therapy may be safe for some survivors of brain hemorrhage

A study from the Stroke Service at Massachusetts General Hospital (MGH) has found that some patients who have survived an intracerebral hemorrhage a stroke caused by bleeding in the brain may be safely treated with aspirin to prevent future heart attacks or strokes caused by blood clots. The study, appearing in the January 24 issue of the journal Neurology, addresses a fairly common clinical dilemma.

"The two types of stroke ischemic, caused by a clot cutting off the brain's blood supply, and hemorrhagic, caused by bleeding in the brain share many of the same risk factors," says Eric Smith, MD, MPH, of MGH Neurology, the study's senior author. "Physicians often see patients with a history of intracerebral hemorrhage who are also at risk for ischemic stroke or heart attacks and need to decide what kind of preventive treatment to recommend. We have not yet had a good answer to whether daily aspirin therapy would be safe for these patients or would increase the risk of another hemorrhage."

The researchers followed a group of 207 patients who had survived intracerebral hemorrhage during the period from 1994 to 2004. The patients were surveyed by telephone every six months and asked about any recurrence of hemorrhage or other neurologic disorders and whether they took aspirin or other antiplatelet therapies. While 18 percent of the study participants had recurrent hemorrhages during an average of 20 months of follow-up, the risk was no greater among the 46 patients who reported taking antiplatelet therapy than it was among the 161 who did not take aspirin. The only factor associated with increased risk of recurrence was the location of the original hemorrhage, with greater risk associated with hemorrhage in the cerebral cortex than in the deep structure of the brain, which had been observed in previous studies.

"While it would be premature to conclude that all patients with intracerebral hemorrhage can safely take aspirin, our results

Contact: Sue McGreevey
Massachusetts General Hospital

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