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Can big data reveal why some patients suffer after Weight-Loss surgery?

NCT ID NCT07797374

Knowledge-focused Sponsor: Umeå University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 01, 2026 · Last updated Sep 02, 2026 · Updated 1 time

Summary

This study links two Swedish national registries to examine how often adults experience nausea, vomiting, and pain right after weight-loss (bariatric) surgery. Researchers will look at data from about 30,000 operations to see which patient, anesthesia, and surgical factors are linked to these problems. They will also check whether early pain or nausea is tied to complications or extra hospital care up to a year later. The goal is to show how well current prevention methods work in everyday practice and where care can improve.

What this could mean

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

Active substance
No drug or intervention is tested. The study observes existing care by linking two Swedish health registries.
What this could lead to
If it works, this could point to ways to reduce pain and nausea after weight-loss surgery and improve recovery for future patients.
What could go wrong
This is an observational registry study, so it can show patterns but cannot prove cause and effect. The results depend on how completely and accurately hospitals record the data.

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

About 30,000 people

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

Started

Oct 2025

Expected to finish

Dec 2028

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.

Who is studied

All adult patients registered in the Scandinavian Obesity Surgery Registry (SOReg) with a primary bariatric procedure during 2018-2027 and a matching operation record in the Swedish Perioperative Register (SPOR).

Ages

18 years and older

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: * Age 18 years or older * Primary bariatric surgery registered in SOReg during 2018-2027 Exclusion Criteria: * Revision bariatric surgery * If more than one bariatric operation is registered for the same patient, only the primary operation is included

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Conditions

The condition(s) this trial relates to.

morbid obesity Pain, Postoperative Postoperative Nausea and Vomiting

As listed by the trial registrant

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

Bariatric surgery Obesity, morbid Postoperative nausea and vomiting Postoperative pain

How to take part

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

  1. The places running it

    2 sites. 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

  • Sundsvall Hospital, Department of Anaesthesia and Intensive Care

    RECRUITING

    Sundsvall, 851 86, Sweden

  • Umeå University, Department of Diagnostics and Intervention

    RECRUITING

    Umeå, 901 87, Sweden

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