How does tPA help people having a stroke?
tPA has been shown to be effective in treating ischemic (is-KEM'ik)
stroke. This kind of stroke is usually caused by blood clots that block
blood flow to the brain.
In 1996 the U.S. Food and Drug
Administration (FDA) approved the use of tPA to treat stroke in the
first three hours following the onset of symptoms. This makes it very
important for people who think they're having a stroke to seek help
immediately. If given promptly, tPA can significantly reduce the
effects of stroke and reduce permanent disability.