Effect of Electroacupuncture on the Incidence of Postoperative Delirium in Elderly Patients Undergoing the Major Surgery

Exclusion Criteria

• •1. Refuse to participate in this study；
• •2. Preoperative history of schizophrenia, epilepsy, Parkinson's disease, or myasthenia gravis；
• •3. Inability to communicate in the preoperative period to complete preoperative evaluation because of severe dementia, coma, language barrier；
• •4. Brain injury or neurosurgery；
• •5. Critical condition (if the ASA grade is greater than or equal to grade IV before surgery); Severe renal impairment (dialysis treatment before surgery); Severe liver function impairment (Child-Pugh level C); Preoperative combined with severe heart disease, LVEF \< 30%;
• •6. Previous experience of acupoint stimulation therapy or non-insensitive to acupoint stimulation；
• •7. The attending physician or researcher considers that there are other circumstances (reasons to be noted) that are not suitable for participation in this study.