postoperative analgesia
Conditions
Interventions
Group A:injection 1% chloroprocaine 0.2 ml/kg in femoral nerve blocks
Group B:injection 1% chloroprocaine 0.1ml/kg in femoral nerve blocks
Group C:injection 1% chloroprocaine 0.3ml/kg in femoral nerve blocks
Group D:injection 0.9% NS 0.2ml/kg in femoral nerve blocks
Sponsors
The Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University
Eligibility
Sex/Gender
All
Age
65 Years to 80 Years
Inclusion criteria
Inclusion criteria: patients scheduled to undergo elective unilateral knee replacement; aged 65 to 80 Yeas; ASA I or II
Exclusion criteria
Exclusion criteria: A history of knee replacement; a history of allergy with morphine or local anesthetics; a history of continuous use analgesic for two weeks or more; a history of peptic ulcer or hemorrhage; peripheral neuropathy; morbid obesity (BMI>40); blood platelet count<8*10^9/l; coagulation disorders; infection of puncture site; a history of mental illness;inapprehension of VAS
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| flexion and straightness degree; | — |
Secondary
| Measure | Time frame |
|---|---|
| VAS scale;AKS scale;Determination of quadriceps muscle strength;patients' satisfaction degree;side effect; | — |
Countries
China
Contacts
Public ContactMA JIANFEN
Outcome results
None listed