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New clues for difficult labors: researchers measure fluid and muscle signals

NCT ID NCT04251702

Knowledge-focused Sponsor: University of Colorado, Denver Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed study looked at two new ways to understand why some labors slow down or stall (called labor dystocia). Researchers measured lactate levels in amniotic fluid and electrical signals from the uterus in 42 healthy women giving birth at term. The goal was to gather information that could lead to more precise diagnosis and personalized care for difficult labors in the future.

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 lead to better ways to diagnose and manage slow or difficult labor, potentially reducing unnecessary C-sections.
What could go wrong
This was a small, early observational study with only 42 participants, so results may not apply to all women. It did not test any treatment or intervention.

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

42 people

The number who actually took part.

Started

Aug 2023

Finished

Dec 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

Healthy pregnant women with a Singleton Term fetus in the Vertex position in labor.

Ages

18 to 41 years

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Maternal age: 18-41 years at the due date * Term gestation: 37-41 weeks estimated gestational age (EGA) * Single fetus in a vertex presentation: Pregnancy with only one fetus that is in a head down position with the occiput leading into the pelvis upon admission to the hospital. Exclusion Criteria: * Pre-existing or gestational diabetes requiring medical management: The diagnosis of diabetes of any kind requiring management with medications including but not limited to insulin, glyburide, and metformin as indicated in the health record. * Pre-existing or gestational hypertension or pre-eclampsia requiring medical management: The diagnosis of hypertension of any kind requiring management with medications including but not limited to long-term hypertension management such as methyldopa and short-term or emergency hypertension management such as labetalol or magnesium sulfate as indicated in the health record. * Suspected fetal anomaly or intrauterine growth restriction: Any diagnosed fetal anomalies or intrauterine growth restriction as indicated in the health record. * Use of amnioinfusion prior to sample collection: Amnioinfusion, the infusion of fluids into the uterus using an intrauterine catheter may affect AFL concentrations. Any amnioinfusion prior to sample collection will exclude participants from continued participation. * Fetal distress prior to or during sample collection: Category 3 fetal heart tracing as defined by the National Institute of Child Health and Development22, absent fetal heart rate variability with recurrent late deceleration, recurrent variable decelerations, bradycardia, or sinusoidal rhythm.

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Conditions

The condition(s) this trial relates to.

dystocia obstetric disorder pregnancy disorder

As listed by the trial registrant

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

Labor (obstetrics)--complications Labor; dyscoordinate

Contacts and locations

Locations

  • UCHealth Hospital

    Aurora, Colorado, 80045, United States

More trials for these conditions

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