Comparing two methods to reduce opioid use after weight loss surgery

Comparison of Laparoscopic Guided Peri-wound Transversus Abdominis Plane Block With Bupivacaine Versus Local Wound Infiltration on Post-op Opioid Use in Laparoscopic Sleeve Gastrectomy, A Prospective Randomized Controlled Study

Phase2; Phase3 Interventional Khon Kaen University · NCT05930184

This study is testing two different ways to manage pain after weight loss surgery to see which one helps people use fewer opioids.

Quick facts

PhasePhase2; Phase3
Study typeInterventional
Enrollment98 (estimated)
Ages18 Years to 60 Years
SexAll
SponsorKhon Kaen University Academic / other
Locations1 site (Khon Kaen, Northeastern)
Trial IDNCT05930184 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to compare the effectiveness of laparoscopic guided peri-wound Transversus Abdominis Plane Block with bupivacaine against local wound infiltration in reducing postoperative opioid use following laparoscopic sleeve gastrectomy. Participants will be randomly assigned to one of the two intervention groups to assess which method better alleviates pain and minimizes the need for opioids after surgery. The study is conducted at Srinagarind Hospital in Khon Kaen, Thailand, following established Thai guidelines for patient eligibility.

Who should consider this trial

Good fit: Ideal candidates for this study are patients scheduled to undergo laparoscopic sleeve gastrectomy at Srinagarind Hospital who meet the inclusion criteria.

Not a fit: Patients who are allergic to or contraindicated for bupivacaine, morphine, fentanyl, NSAIDs, or Nefopam, as well as those unable to communicate their pain levels, will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could significantly reduce opioid consumption in patients undergoing laparoscopic sleeve gastrectomy, leading to improved recovery and reduced risk of opioid-related side effects.

How similar studies have performed: Other studies have shown promise in using regional anesthesia techniques like the Transversus Abdominis Plane Block for pain management, suggesting potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* patient undergoing LSG at Sringarind hospital as indicated by Thai guideline

Exclusion Criteria:

* Allergic/contraindicated to bupivacaine, morphine, fentanyl, NSAIDs or Nefopam
* Unable to describe pain score Opioid addict
* denied consent

Where this trial is running

Khon Kaen, Northeastern

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Morbid ObesityLaparoscopic Sleeve GastrectomyTransversus Abdominis Plane BlockLocal Wound InfiltrationBupivacineOpioid Use
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.