Recognizing the symptoms of a stroke
and seeking prompt medical care can greatly improve your chances of recovery. When someone is having a stroke, they need prompt emergency medical care. During a stroke, blood supply to the brain is cut off or disrupted, causing part of the brain to go without the oxygen-rich blood it needs. The longer the brain goes without blood, the greater the chance a disability will occur.
The National Institute of Neurological Disorders and Stroke conducted a five-year study on the use of tPA. The study found that patients who received tPA within three hours of the first stroke symptoms were at least 30 percent more likely to recover with little or no disability after three months.