"But importantly, tPA must be given within a few hours of symptom on-set, so people need to know to call 911, and don't delay getting to the hospital."

Chelsea Kidwell, medical director of the Georgetown University Stroke Center, on the importance of getting medical care following a stroke.

Study Finds Racial Disparity in Care for D.C. Patients with Strokes

June 30, 2011, WAMU