Bleeding within the brain, or intracerebral hemorrhage, was associated with a high risk of developing dementia post stroke, according to research presented at the American Stroke Association's International Stroke Conference 2016.
Intracerebral hemorrhage, which results from a weakened vessel that ruptures and bleeds into the brain, represents 13 percent of all strokes. Researchers studied how often and why dementia might occur after intracerebral hemorrhage by following a population of 218 intracerebral stroke patients, who were free of dementia in the first six months after stroke.
20 percent had developed dementia at one year after stroke.
63 patients developed new onset dementia during an average follow-up of 5.4 years.
Risk factors associated with a higher risk of dementia after intracerebral hemorrhage, included the location of the brain bleed, older age, history of a previous stroke or transient ischemic attack, higher stroke severity score and recurrent stroke during the follow-up.
Risk factors identified on brain imaging were particularly linked with a very frequent cause of bleeding strokes called cerebral amyloid angiopathy.
Doctors caring for stroke survivors should consider dementia risks, especially when risk factors are present, researchers said.
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