None
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Age >=18 years, any gender; 2. ASA Class I-III
Exclusion criteria
Exclusion criteria: 1.Presence of shock or coma. 2.Known coagulation disorders; 3.Local infection at the proposed block site. 4.Pre-existing neurological injury in the limb to be blocked. 5.Long-term or chronic use of analgesic medications; 6.Diagnosis of a major psychiatric illness; 7.Current or recent treatment with radiotherapy or chemotherapy. 8.Known hypersensitivity to amide local anesthetics (lidocaine, ropivacaine) or any agent used in general anesthesia. 9.Previous surgical history of mastectomy or other thoracic procedures on the operative side; 10.Body mass index equal to or exceeding 35 kg/m^2. 11.Inability or contraindication to utilize patient-controlled analgesia (PCA) devices;
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| MAP And HR;effective demands of the intravenous PCA;Bruggermann Comfort Scale Score; | — |
Countries
China
Contacts
The Affiliated People’s Hospital of Ningbo University