1.What is thrombolytic therapy? Thrombolytic therapy usually refers to the injection of thrombolytic drugs through veins or arteries in the ultra-early stage (3 hours-4.5 hours) after the formation of cerebral artery thrombus to “melt” the thrombus, restore blood flow to the blood vessels blocked by the thrombus, improve blood supply to the brain, and reduce or avoid serious cerebral infarction. 2.What drugs are available for thrombolytic therapy? At present, the commonly used thrombolytic drugs in China are r-tPA (recombinant tissue-type fibrinogen activator), with the trade name (Aitongli). 3.What is endovascular treatment for acute ischemic stroke? Endovascular treatment is an interventional technique (catheter, micro-catheter, stent, etc.) to apply thrombolytic drug (Aitongli) or embolizer at the lesion causing cerebral infarction to recanalize the lesion, thus restoring blood supply to brain tissue and promoting neurological recovery.