0435 GMT November 13, 2019
The study included more than 2,000 people who had CT scans of the brain within 24 hours of suffering a mild, non-disabling stroke or a transient ischemic attack, which are sometimes called "mini-strokes." Of those patients, 40 percent had brain damage due to a lack of sufficient blood flow (ischemia), US News & World Report wrote.
Compared to people who didn't have an interruption in blood flow to part of their brains, the risk of another stroke within 90 days was almost three times higher in those with new brain damage due to poor blood circulation (acute ischemia), according to the researchers.
The study also found that the risk of another stroke was more than five times higher in people with previous brain damage from ischemia (chronic ischemia) in addition to the damage from the recent stroke.
The risk was also nearly five times higher in people with damage from insufficient blood flow along with any type of small blood vessel damage in the brain, according to the study. An example of small blood vessel damage is the narrowing of the small vessels (microangiopathy) in the brain.
The study also found that the risk of another stroke was about eight times higher in those people who had recent damage from ischemia and chronic ischemia, as well as small blood vessel damage.