Efficacy and Safety Study of Endovascular Treatment of Asymptomatic Carotid Artery Stenosis

"Participants will receive carotid artery stenting as the primary intervention. The procedure will be performed via femoral artery access (radial access allowed for anatomically challenging cases) with mandatory use of an embolic protection device (EPD). Stent selection and EPD type will be determined by the operator based on lesion characteristics.~Pre-procedural dual antiplatelet therapy (DAPT: aspirin 100 mg/day + clopidogrel 75 mg/day) will be administered for ≥3-5 days. Post-procedural DAPT will continue for 3 months, transitioning to aspirin monotherapy (100 mg/day) thereafter. Statins and risk factor management (blood pressure、LDL-C, glycemic control) will align with standardized protocols."

Participants will receive intensive medical management, including aspirin (75-325 mg/day) or alternative antiplatelet agents (clopidogrel/dipyridamole) for intolerance. Statin therapy and risk factor control targets (blood pressure, lipids, glucose, lifestyle) will mirror the experimental group. Both groups will undergo regular follow-up for adherence monitoring.