Optimal timing for TAP blocks in bariatric surgery

Single Blind Clinical Trial: Optimizing TAP Block Timing for Bariatric Surgery

Phase 2 Interventional McMaster University · NCT06270147

This study is testing whether giving a pain relief shot earlier during bariatric surgery helps obese patients recover faster and use less pain medication.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment100 (estimated)
Ages18 Years and up
SexAll
SponsorMcMaster University Academic / other
Locations1 site (Hamilton, Ontario)
Trial IDNCT06270147 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the best timing for administering a Transversus Abdominis Plane (TAP) block during bariatric surgery, comparing early administration at the start of the procedure to the current practice of administering it at the end. The study focuses on obese patients undergoing primary bariatric surgeries such as Sleeve Gastrectomy and Roux-en-Y Gastric Bypass. Key outcomes include postoperative pain levels, opioid consumption, recovery duration, and respiratory function. The goal is to determine if early TAP block initiation can improve recovery and reduce opioid use, potentially establishing a new standard of care.

Who should consider this trial

Good fit: Ideal candidates are adults over 18 years old undergoing primary bariatric surgery at St. Joseph's Healthcare Hamilton.

Not a fit: Patients undergoing revisional bariatric surgery or those with a history of chronic pain or opioid use may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved postoperative pain management and reduced reliance on opioids for patients undergoing bariatric surgery.

How similar studies have performed: Emerging studies suggest that early TAP block administration may enhance recovery and pain control, indicating potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients undergoing primary bariatric surgery at St. Joseph's Healthcare Hamilton surgery including Sleeve Gastrectomy (SG) or Roux-en-Y Gastric Bypass Surgery (RYGB)
* Patients \>18 Years of Age

Exclusion Criteria:

* Patients undergoing a revisional bariatric surgery
* Patients with a history of chronic pain or opioid use.

Where this trial is running

Hamilton, Ontario

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 Opioid UsePain, Postoperative
Last reviewed 2026-06-09 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.