Tirofiban for Patients With intraCranial Artery Stenosis and High-risk Acute Non-disabling Cerebrovascular Events(CHANCE-4）

Initial infusion of tirofiban 0.4μg/kg body weight/minute for 30 minutes (a maximum dose of 1mg) within 24 hours of symptom onset, followed by a continuous infusion of tirofiban 0.1μg/kg body weight/minute for 48 hours.

Initial infusion of saline placebo for 30 minutes within 24 hours of symptom onset, followed by a continuous infusion of placebo for 48 hours.