Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Cure My Disease

Don't miss your cure!

 Log in / Sign up

Breath test reveals gut bacteria changes after Weight-Loss surgery

NCT ID NCT02819037

Knowledge-focused Sponsor: Lille Catholic University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at how gastric bypass surgery changes the bacteria in the small intestine. Researchers measured hydrogen in the breath of 51 severely obese patients before surgery and at several points up to 2 years after. The goal was to find out how often bacterial overgrowth occurs and how it relates to digestion and nutrient absorption.

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

51 people

The number who actually took part.

Started

May 2016

Finished

Oct 2022

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

18 to 65 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: * Severe obesity (BMI\>35kg/m² with at least one comorbidity or BMI\>40kg/m² without comorbidity) and after medical care for at least 6 months * Patient who will follow bariatric surgery by bypass gastric * Social insurance affiliation * Signature of the informed consent Exclusion Criteria: * Contraindication criteria for bariatric surgery (cognitive or mental severe disorders, severe and non-stabilized eating disorders, etc.) * Chronic inflammatory bowel disease (Crohn's disease, hemorrhagic rectocolitis) * Previous intestinal surgery * Antibiotic periodicity treatment of less than 3 months * Other diseases responsible for bacterial overgrowth * Pregnancy or breastfeeding

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Bacterial overgrowth syndrome are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

Conditions

The condition(s) this trial relates to.

blind loop syndrome morbid obesity Mucopolysaccharidosis IV small intestinal bacterial overgrowth

As listed by the trial registrant

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

Bacterial overgrowth syndrome Blind loop syndrome Chromatography, gas Gastric bypass

Contacts and locations

Locations

  • Centre Hospitalier d'Arras

    Arras, 62022, France

  • Centre Hospitalier de Douai

    Douai, 59507, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.