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Seeing the needle: ultrasound may take the guesswork out of labor pain relief

NCT ID NCT06300151

Symptom relief Sponsor: Zongxun Lin 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 30, 2026 · Last updated Jul 31, 2026 · Updated 1 time

Summary

This trial tests whether using real-time ultrasound to guide the needle during epidural placement can improve pain relief and reduce complications for women in labor. Traditional epidurals rely on feel and landmarks, which can be less accurate. The study will compare the ultrasound-guided approach to the standard technique in 212 healthy women with a single pregnancy, measuring how quickly and effectively pain is controlled and whether serious side effects occur.

What this could mean

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

Active substance
Ultrasound real-time guidance combined with dural puncture epidural labor analgesia
What this could lead to
If effective, this technique could make epidural pain relief during labor faster, more reliable, and safer for mothers.
What could go wrong
This is a single-center trial with 212 participants, so results may not apply broadly. The ultrasound method requires special equipment and training, which could limit adoption.

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

212 people

The number who actually took part.

Started

Apr 2024

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.

Ages

20 to 45 years

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.

Inclusion Criteria: 1. American Society of Anesthesiologists (ASA) Class I or II; 2. Single healthy pregnancy; 3. Head showing first; 4. 37 to 41 weeks; 5. The labor process is active, and the cervix dilates\<5cm; 6. Require epidural labor analgesia; 7. Volunteer to participate in this study and sign an informed consent form. Exclusion Criteria: 1. Presence of pregnancy diseases, such as pregnancy hypertension, pre eclampsia, pregnancy diabetes; 2. Contraindications to intraspinal analgesia: 1) Central nervous system diseases. 2) Infection or septicemia at the puncture site. 3) Coagulation dysfunction; 3. Known cases of fetal malformation or increased risk of cesarean section, such as a history of uterine rupture; 4. Persons with a history of mental illness, hysteria, epilepsy, etc. who cannot cooperate. 5. Patients with long-term use of opioids, steroids, and chronic pain.

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As listed by the trial registrant

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

Labor analgesia

Contacts and locations

Locations

  • Fujian Provincial Hospital

    Fuzhou, Fujian, 350001, China

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