None listed
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Patients aged 65-90 years; 2. Patients undergoing intravenous anesthesia for percutaneous kyphoplasty; 3. Patients with ASA grade I-III; 4. Agree to participate in this study and sign informed consent.
Exclusion criteria
Exclusion criteria: 1. Patients with preoperative bradycardia (HR less than 60 times/min) liver and kidney insufficiency, stroke, cerebral hemorrhage, infectious diseases, and immune system diseases; 2. Patients with delirium, cognitive dysfunction and other mental diseases before surgery; 3. Patients with serious mental illness.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 95% effective dose of dexmedetomidine in percutaneous kyphoplasty; | — |
Countries
China