postoperation pain
Conditions
Interventions
Experimental group:0.2% ropivacaine 50ml femoral nerve block
control group :0.5% ropivacaine 20ml femoral nerve block +0.2% ropivacaine continuous femoral nerve
Sponsors
Beijing Jishuitan Hospital
Eligibility
Sex/Gender
All
Age
65 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. Aged > 65 years old; 2. For patients receiving knee surgery under spinal anesthesia, the operation time <=3h.
Exclusion criteria
Exclusion criteria: 1. Refuse to participate in this study; 2. Failure in spinal anesthesia; 3. Preoperative schizophrenia, epilepsy, Parkinson's disease, myasthenia gravis; 4. Inability to communicate with each other due to coma, severe dementia or speech impairment; 5. Craniocerebral injury or neurosurgery; 6. Preoperative LVEF<30%, or patients with sick sinus node syndrome, severe sinus bradycardia (heart rate <50 beats/min), degree ii or above atrioventricular block without pacemaker implantation; 7. Severe liver dysfunction (Child-Pugh Grade C); 8. Severe renal dysfunction (preoperative dialysis); 9. ASA grade IV patients or expected survival <=24 hours; 10. There were skin rupture, infection, vasculitis and local surgical operation requirements in the inguinal area
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| postoperative pain score; | — |
Secondary
| Measure | Time frame |
|---|---|
| Postoperative muscle strength of lower limbs;the time of femoral nerve block; | — |
Countries
China
Contacts
Public ContactTao Yan
Beijing Jishuitan Hospital
Outcome results
None listed