Effects of Intravenous Anesthesia on Postoperative Cognitive Function in Patients Accepted Painless Gastroenteroscopy

Effects of Intravenous Anesthesia on Postoperative Cognitive Function in Patients Accepted Painless Gastroenteroscopy

The investigators want to study the effect of intravenous anesthesia on postoperative cognitive function in patients accepted gastroenteroscopy ,no additional medication or operation is involved

The investigators want to study the effect of intravenous anesthesia on postoperative cognitive function in patients accepted gastroenteroscopy ,no additional medication or operation is involved.The investigators assess cognitive function through a series of tests for 4 times( within 3 days before the endoscopy ,2 hours after the endoscopy finished,1 week after the endoscopy,3 months after the endoscopy),including WCST、DSST、DST、HADS、MoCA,through self - contrast,the investigators will conclude whether intravenous anesthesia has bad impact on cognitive function or not .

Inclusion Criteria:

• voluntary to participate in
• Vital signs are stable
• no drug or alcohol abuse
• no mental illness
• no severe central system diseases such as brain infarction
• between 18 and 80
• no liver or kidney dysfunction
• will perform endoscopy for various reasons

Exclusion Criteria:

• illiteracy
• color blindness
• can't write or refused to sign informed consent
• unable to follow up regularly or cooperate with the examination
• drug or alcohol abuse
• hearing or visual serious impairment
• has severe central nervous system diseases such as shoke ,neurosyphilis
• uncontrolled high blood pressure or hyperglycemia
• neurosyphilis
• history of craniotomy for various reasons
• liver and kidney dysfunction
• non-digestive tumors
• history of intravenous or general anesthesia for other causes in the last 3 months