Acute postoperative pain
Conditions
Interventions
Nerve block group:1. Nerve block group: Ultrasound-guided rectus sheath block is performed prior to general anesthesia induction (procedure: ultrasound probe placed at the umbilical plane, 2–3 cm belo
needle insertion posterior to the rectus muscle, aspiration confirmed negative for blood/air, followed by injection of 10 mL of 0.2% ropivacaine per site)
simultaneous recording of ultrasound videos
2. Model assessment: The recorded ultrasound videos are input into the model to generate real-time outputs of structural identification (e.g., rectus muscle) and block efficacy classification (adequat
Control group:None
Sponsors
Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. Patients who are scheduled to undergo laparoscopic cholecystectomy in our hospital; 2. Aged >=18 years, with ASA classification <= Grade III; 3. Voluntary participation and signing of the informed consent form; 4. Able to cooperate in completing the postoperative pain score follow-up.
Exclusion criteria
Exclusion criteria: 1. Allergy to local anesthetics such as ropivacaine; 2. Coagulation disorders (platelet count 1.5); 3. Skin infection, severe scar or tumor at the puncture site; 4. Severe heart and lung dysfunction, liver or kidney failure; 5. Mental illness or cognitive impairment (unable to cooperate with pain scoring); 6. Poor quality of ultrasound images.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Visual Analogue Scale; | — |
Secondary
| Measure | Time frame |
|---|---|
| Postoperative adverse events (e.g., nausea, vomiting);Analgesic use within 24 hours postoperatively; | — |
Countries
China
Contacts
Public ContactWu Jiali
Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University
Outcome results
None listed