Endovascular Treatment for Mild Stroke With Acute Anterior Circulation Large Vessel Occlusion

Intervention Group:Interventionist choose the optimal endovascular treatment (EVT) strategy and device based on the patient's condition and local guidelines. The patient will receive the best medical treatment according to the local guidelines.

Best medical treatment:Patients will receive the best medical treatment according to local guidelines, including antiplatelet agents, anticoagulants, thrombolysis, etc., but not any EVT. In the control arm, rescue EVT is allowed in patients with disease progression leading to an increase in NIHSS≥4 and excluding the impact of non-stroke factors, and the onset-to-treatment time is within 24 hours.