None listed
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Patients undergoing elective lower extremity surgery; 2. Aged >65 years; 3. BMI 18 ~ 28kg/m^2; 4. ASA grade I ~ ?; 5. No history of neurological or psychiatric diseases; 6. No obvious abnormality of cardiopulmonary function; 7. No surgical contraindications, no contraindications of intravertebral anesthesia, able to actively cooperate with treatment.
Exclusion criteria
Exclusion criteria: 1. Confirmed cerebrovascular diseases; 2. Severe arrhythmia; 3. Taking drugs that affect the central nervous system; 4. History of allergic reaction to the study drug; 5. Pregnant or lactating patients.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Bispectral index (BIS);Improved vigilance/sedation (MOAA/S) score;Arterial blood indicators;Venous blood indicators; | — |
Secondary
| Measure | Time frame |
|---|---|
| Adverse reactions;General indicators; | — |
Countries
China
Contacts
Second Affiliated Hospital of Soochow University