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Pregnancy after Weight-Loss surgery: new study tracks blood sugar risks for mom and baby

NCT ID NCT07578597

Knowledge-focused Sponsor: Odense University Hospital 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study follows 225 pregnant women—some who had gastric bypass or sleeve gastrectomy, and some without surgery—to see how blood sugar changes affect fetal growth. Participants wear a continuous glucose monitor and activity tracker for 10 days each trimester. The goal is to learn how often low and high blood sugar occur and how they relate to baby's birth weight.

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 better manage pregnancies after bariatric surgery and improve care for mothers and babies.
What could go wrong
This is an observational study, not a treatment trial. It may not lead to direct changes in care, and results may not apply to all 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.

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 225 people

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

Started

Apr 2025

Expected to finish

Feb 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.

Ages

18 years and older

Sex

Female participants only

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.

* RYGB group: pregnant women with RYGB and their neonate (n = 75) * SG group: pregnant women with SG and their neonate (n = 75) * non-BS group: pregnant women without BS matched on age, pre-pregnancy-BMI and parity and their neonate (n = 75) Exclusion criteria * multiple pregnancy * age below 18 and above 45 years * ongoing smoking or substance abuse * severe psychiatric disorder or chronic disease * use of GLP-1 analogue within two months of conception * diabetes * women with overt diabetes at inclusion (HbA1c ≥ 48 mmol/l and/or fasting p-glucose ≥ 7 mmol/l) * women with pre-gestational diabetes (type1 or 2) prior to RYGB * women with GDM in a previous pregnancy will not be excluded

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Conditions

The condition(s) this trial relates to.

gestational diabetes obesity disorder

As listed by the trial registrant

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

Association between glucose excursions, fetal growth and neonatal body composition Hypo- and hyperglycemia following bariatric surgery

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

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    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

  • Steno Diabetes Center, Odsense Univeristy Hospital

    Odense, 5000, Denmark

More trials for these conditions

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