Administering a clot-dissolving drug to stroke victims quickly — ideally within the first 60 minutes after they arrive at a hospital emergency room — is crucial to saving their lives, preserving their brain function and reducing disability.
Given intravenously, tPA (tissue plasminogen activator) is currently the only Food and Drug Administration–approved therapy shown to improve outcomes for patients suffering acute ischemic stroke, which affects some 800,000 Americans annually.