None
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Patients who are to be treated with elective surgery, regardless of gender, age > 18 years, BMI 18-30kg/m^2, ASA I-III. level, agree to sign the informed consent form.
Exclusion criteria
Exclusion criteria: History of severe drug dependence, history of alcoholism; Combined with psychiatric diseases, central and peripheral nervous system diseases; History of severe cardiac, liver, and renal impairment; History of multiple surgeries; History of sedatives, antidepressants, anxiolytics and other medications that affect brain function before surgery; Allergy to anesthetics.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Pain threshold index(PTi); | — |
Secondary
| Measure | Time frame |
|---|---|
| Wavelet index(WLi);Cortical excitability index(CEi);Subcortical excitability index (SCEi);Mean arterial pressure (MAP);Heart rate (HR);Visual analogue scale (VAS);Anxiety index (ANXi); | — |
Countries
China
Contacts
Fourth Hospital of Hebei Medical University