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B. A New Tool Improves Prediction of Stroke Risk

Narrator: This is Science Today. A transient ischemic attack, or TIA, is a mini-stroke that resolves itself, but it puts patients at risk of having a major stroke within 90 days. Half of TIA patients will have a major stroke within the first two days. Knowing who is at imminent risk was the focus of a University of California , San Francisco study. Neurologist S. Claiborne Johnston tested two existing prognostic scores and came up with an improved scoring method.

Johnston: The new score worked better than anything else that people have tried before and it worked very well in all the different populations that we tested it in.

Narrator: The new model is a hybrid of the two current scores that are used to estimate the risk of stroke after a TIA. It's called ABCD squared (ABCD2).

Johnston: D squared because there are two D's basically. Each one of these letters represents some characteristics. We're trying to make it easy for physicians to remember the score. So, A is for age, B is for blood pressure, C is for clinical symptoms, the first D is for duration and the final D is for diabetes. It's a little more comprehensive.

Narrator: For Science Today, I'm Larissa Branin.