Hypoxic Preconditioning on Patients

Exclusion Criteria

• •1. Planned vessel sacrifice as the primary modality for ischemic cerebrovascular treatment.
• •2. Systemic blood disease before intervention.
• •3. Regular physical activity exercise: frequency \>1 time/week, duration \>20 min.
• •4. History of brain disease or history of stroke or transient ischemic attack within the previous six months.
• •5. History of heart, liver, kidney or lung disease.
• •6. History of hypertension and poor blood pressure control, with blood pressure \>160/90 mmHg.
• •7. Pregnancy.