None
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1.ASA grade II-III; 2.Age 65-85 years old, BMI18-25kg/m².
Exclusion criteria
Exclusion criteria: 1.Allergy to analgesic or sedative drugs; 2.History of allergic disease or mental illness; 3. Long-term use of sedative or analgesic drugs; 4.Opioid dependence or tolerance; 5. Sinus bradycardia; 6. Craniocerebral injury and intracranial hypertension; 7. Serious heart, lung, liver, renal insufficiency
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Bispectral Index;Heart rate;Blood pressure; | — |
Secondary
| Measure | Time frame |
|---|---|
| Pulse oxygen saturation; | — |
Countries
China
Contacts
Qing Dao Women and children's Hospital