Clinical trial Recruiting at 1 site Interventional Ages 18 to 90

Autonomic Nerve Blockade to Reduce Pain and Nausea After Bariatric Surgery

Official title: Autonomic Neural Blockade During Sleeve Gastrectomy and Gastric Bypass: A Randomized Controlled Trial Evaluating Pain and Nausea After Bariatric Surgery

Run by Endeavor Health · NCT07104825 · Data updated 2026-11-12

This study tests whether an autonomic nerve block given during bariatric surgery can lessen pain and nausea and decrease the need for anti-nausea and pain medicines in the first 72 hours after sleeve gastrectomy or gastric bypass.

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Quick facts

Study typeInterventional
Ages18 Years to 90 Years
SexAll
Enrollment200 (estimated)
SponsorEndeavor Health
Academic / other
Locations1 site (Evanston, Illinois)
StatusRecruiting
StartedFebruary 5, 2026
Main results expectedDecember 2027
Study endsDecember 2027
Registry record updatedJuly 29, 2026
Trial IDNCT07104825 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18–90 with severe obesity undergoing laparoscopic/robotic gastric bypass or sleeve gastrectomy who consent to participate.

Probably not a fit

Patients who do not respond to nerve block strategies or have contraindications to the anesthetics used may not experience benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

In this single-blind randomized trial, adults undergoing laparoscopic sleeve gastrectomy or gastric bypass are assigned to either the standard intraoperative care or an additional autonomic neural blockade (ANB) plus the usual abdominal wall block. The ANB uses local anesthetics, including Liposomal bupivacaine, to target nerves around the stomach and celiac area with the goal of reducing postoperative pain and nausea and the amount of opioid and antiemetic medications required. Outcomes focus on total postoperative opioid use (MMEs) and relief of pain and nausea over 72 hours. Surgeons know group assignment, but participants do not.

Why it matters

Potential benefit: If successful, patients may experience less pain and nausea after bariatric surgery and require fewer opioid and anti-nausea medications.

How similar studies have gone: Previous studies suggest autonomic neural blockade can improve early postoperative pain and nausea in surgical patients, supporting this approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Individuals able and willing to consent and participate in all study activities
* Adults, ages 18-90
* All patients with severe obesity undergoing laparoscopic/robotic gastric bypass or sleeve gastrectomy

Exclusion Criteria:

* Patients taking opiates chronically
* Patients allergic to study medications
* Patients with any prior adverse reaction to ingredients included in the block
* Adults unable to consent
* Pregnant women
* Prisoners

Where it's running

  • Endeavor Health
    Evanston, Illinois, United States
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.