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Which nerve block wins for post-surgery pain?

NCT ID NCT07592091

Symptom relief Sponsor: Chiang Mai University Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares two types of nerve blocks (rectus sheath block and transversus abdominis plane block) to see which provides better pain relief after laparoscopic weight-loss surgery. About 96 adults aged 20-60 will be randomly assigned to receive one of the blocks after general anesthesia. Researchers will measure pain scores, opioid use, and recovery outcomes to determine the more effective technique.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 96 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

Jun 2031

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

20 to 60 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patients aged 20-60 years old * Scheduled for elective LBS including laparoscopic sleeve gastrectomy, proximal jejunal bypass, and Roux-en-Y gastric bypass * American Society of Anesthesia (ASA) physical status III * Have ability to communicate and understand the study and accept to participate in the study Exclusion Criteria: * Patients who have following underlying disease: severe hepatic impairment \[diagnosed of cirrhosis (Child-Pugh C)\], coagulopathy (diagnosed of disease associated with abnormal coagulation), pre-existing neurological deficits, chronic pain (diagnosed of chronic pain disease or current use regular analgesic drugs), or any drug addiction. * Known allergy to bupivacaine or weighing less than 60 kg, as the planned doses of bupivacaine may exceed safe maximum limits. * Patient with previous foregut surgery including esophageal, gastric, liver and pancreases resection.

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Conditions

The condition(s) this trial relates to.

agnosia pain agnosia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Analgesia Opioid consumption, postoperative Rectus sheath block Transverse abdominis plane block

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Maharaj Nakorn Chiang Mai Hospital, Faculty of Medicine, Chiang Mai University

    Chiang Mai, Mueang, 50200, Thailand

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