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Swiss study of 21,000 patients compares stapler techniques in Weight-Loss surgery

NCT ID NCT07483957

Knowledge-focused Sponsor: Cantonal Hospital of St. Gallen 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 over 21,000 people in Switzerland who had gastric bypass surgery for severe obesity. It compared two ways of connecting the stomach to the small intestine: using a linear stapler or a circular stapler. The goal was to see which method leads to fewer complications and shorter hospital stays. The results help doctors choose the best technique for their patients.

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.

Participants

21,375 people

The number who actually took part.

Started

Jan 2015

Finished

May 2025

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.

Who is studied

All patients with gastric bypass surgery in Switzerland between 2015 and 2022

Ages

20 years and older

Sex

Anyone

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: * Elective laparoscopic Roux-en-Y gastric bypass Exclusion Criteria: * Incomplete documentation * Age under 20 years * Other hospitals than general or surgical hospitals * Omega-loop gastric bypass * Emergency admission * No stapler coded * Open access

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Conditions

The condition(s) this trial relates to.

morbid obesity

As listed by the trial registrant

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

Bariatric surgery (gastric bypass)

Contacts and locations

Locations

  • HOCH Health Ostschweiz, Kantonsspital St.Gallen

    Sankt Gallen, 9000, Switzerland

More trials for these conditions

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