total knee arthroplasty
Conditions
Interventions
experimental group:Butorphanol combined with ropivacaine
Sponsors
The First Affiliated Hospital of Chongqing Medical University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1.Patients who need to undergo unilateral total knee arthroplasty and voluntarily participate in the study and sign an informed consent; 2.Aged 18-75 years, regardless of gender; 3.American Association of Anesthesiologists (ASA) grade I-III; 4.Physique Index (bodymassindex, BMI) < 40 kg/m2.
Exclusion criteria
Exclusion criteria: 1. Those who are allergic to opioids and amide local anesthetics; 2. Those who have a history of neurological diseases or coagulation abnormalities; 3. Those who have a history of knee joint surgery; 4. Those who take opioids or severe alcohol abuse for a long time; 5. Those who have mental cognitive impairment 6. Those who refuse to participate or ask to withdraw halfway.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| visual analogue scale;Tramadol dosage 24 hours after surgery;Ramsay sedation score;Time for sensory block to disappear; | — |
Secondary
| Measure | Time frame |
|---|---|
| Lovett classification;Time to get out of bed for the first time;Incidence of remedial analgesia;The incidence of postoperative nausea, vomiting, dizziness and other adverse reactions;Patient satisfaction;Range of knee motion; | — |
Countries
China
Contacts
Public ContactLiu Danyan
The First Affiliated Hospital of Chongqing Medical University
Outcome results
None listed