Thrombolytic therapies are important clot-busting medications used to treat ischemic stroke. Tissue plasminogen activator (t-PA) is an example of a powerful thrombolytic therapy that dissolves blood clots that cause strokes. This medicine is most effective when given to a patient within three hours after stroke symptoms begin. It may not be an appropriate therapy for all ischemic stroke patients. This chart shows the percent of ischemic stroke patients who went to the emergency department within two hours and received t-PA within three hours after stroke symptoms started.
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