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Can stomach size predict weight regain after bariatric surgery?

NCT ID NCT01963637

Knowledge-focused Sponsor: Hospices Civils de Lyon 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study tracked 46 people with severe obesity who had gastric bypass or sleeve gastrectomy. Researchers used a special CT scan with gas to measure stomach volume at 3 and 12 months after surgery. The goal was to see if stomach enlargement is linked to weight regain, which could help improve future surgeries.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could help doctors predict weight regain after bariatric surgery and improve surgical techniques.
What could go wrong
This is a small pilot study with only 46 patients, so results may not apply to everyone. It is observational in nature and does not test a new treatment.

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

46 people

The number who actually took part.

Start date

Sep 2012

Finished

Jan 2015

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 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 of both genders, with morbid obesity (BMI \> or = 40kg / m ²) * Age included between 18 and 60 years * Patient who requires a gastric bypass or a Sleeve gastrectomy as a 1st bariatric procedure. Indication validated in pluridisciplinary concertation meeting for bariatric surgery * No previous history of bariatric surgery * Free and informed consent signed * Being affiliated to a French social security system or similar. Exclusion Criteria: * Bariatric surgery with metabolic aim (BMI \< 40kg / m ²) * Patients with a history of bariatric surgery, after failure of one or several previous procedures * Contraindication to radiation exposition: current or planned pregnancy during the study * prostate adenoma : contraindication to antispasmodic * Known allergy to effervescent salts or butylscopolamine (Scoburen) * Glaucoma * Inability to express a consent * Unaffiliated patients to a French national insurance * Patients with Pacemaker * Patients already enrolled in a study with a conflict of interest with this study.

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Conditions

The condition(s) this trial relates to.

morbid obesity Obesity

As listed by the trial registrant

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

Morbid obesity

Contacts and locations

Locations

  • Hospices Civils de Lyon- hôpital Edouard Herriot- service de Chirurgie Digestive

    Lyon, 69003, France

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