Remote Ischemic Conditioning Plus Stenting for Symptomatic Carotid Artery Stenosis

Inclusion Criteria: * Age ≥ 40 years old; * Patients with symptomatic moderate to severe stenosis of the internal carotid artery; * History of ipsilateral cerebral ischemic symptoms within the past 180 days; * Planned for carotid artery stent; * Essen Score ≥ 3; * Modified Rankin Scale score of 0 or 1; * Signed informed consent. Exclusion Criteria: * Uncontrolled severe hypertension (systolic blood pressure \> 180 mmHg or diastolic blood pressure \> 110 mmHg despite medication) * Subclavian artery stenosis ≥ 50% or presence of subclavian steal syndrome * Severe hematological disorders or significant coagulation abnormalities * Contraindications to remote ischemic conditioning, such as severe soft tissue injury, fracture, or vascular injury in the upper limbs, or peripheral vascular disease in the distal upper limbs * Severe comorbid conditions with a life expectancy of less than 1 year * Participation in another clinical trial within the past 3 months or ongoing participation * Any other circumstances deemed by the investigator as unsuitable for participation in this clinical study.