Effect of Remote Ischemic Postcondioning on Glymphatic System in Acute Stroke

Inclusion Criteria: * The patient was 18-80 years old; * The NIHSS score was ≤ 25 and NIHSS \> 5，Glasgow coma score ≥ 8; * The patients were diagnosed as anterior circulation cerebral infarction and could start remote ischemic postcondioning within 24 hours after onset * Normal to random time within 24 hours * Written informed consent signed by patients or their families Exclusion criteria: * patients receiving thrombolysis or endovascular therapy; * modified Rankin scale (mRS) score ≥ 2 before this attack; * other intracranial lesions, such as cerebral hemorrhage, cerebral venous disease, severe subclavian artery stenosis and other diseases involving the brain; * Arterial blood pressure ≤ 90/60mmHg or ≥ 180/100mmHg after treatment.