Final ultrasound before birth could prevent unnecessary C-Sections
NCT ID NCT07433751
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at whether doing an ultrasound within 24 hours of delivery can more accurately detect fetal macrosomia (birth weight ≥4000 g). Current ultrasounds done weeks before birth can be off by 6-10%, leading to unnecessary inductions or C-sections. Researchers will compare ultrasound estimates to actual birth weights in 285 pregnant women with suspected large babies.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Ultrasound
- What this could lead to
- If successful, this could improve how doctors detect large babies before birth, potentially reducing unnecessary labor inductions or C-sections.
- What could go wrong
- This is an observational accuracy study, not a treatment trial. Even if ultrasound is more accurate close to delivery, it may not change outcomes or reduce complications.
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
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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
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About 285 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2026
- Expected to finish
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Sep 2028
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Female participants only
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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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 old. * Patient with suspected fetal macrosomia above the 95th percentile, or above the 90th percentile in the case of maternal diabetes, according to Hadlock's formula and WHO charts, during the third-trimester ultrasound (between 32 and 34 weeks of amenorrhea). * Female patient presenting for a follow-up ultrasound at 36 ± 1 weeks of amenorrhea due to suspected macrosomia. * Singleton pregnancy. Exclusion Criteria: * Fetal weight estimation at 36 ± 1 weeks of amenorrhea and macrosomia assessment performed outside of the hospital. * Patient with uncertain gestational age. * Patient with a multiple pregnancy * Presence of detectable morphological or chromosomal abnormalities.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Centre Hospitalier d'Avignon, Hôpital Henri Duffaut
RECRUITINGAvignon, 84000, France
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