None listed
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Patients undergoing elective breast cancer surgery under general anesthesia; 2. Aged >18 years; 3. The BMI < 30 kg/m ^ 2; 4. ASA I - II; 5. Patients and their family members signed informed consent.
Exclusion criteria
Exclusion criteria: 1. Allergy to local anesthetics; 2. Serious cardiovascular and cerebrovascular diseases; 3. Long-term use of opioids; 4. Use any analgesic 24 hours before surgery; 5. Chronic pain.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Visual analogue scale score; | — |
Countries
China