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Laughing gas tested to take the edge off cerclage removal

NCT ID NCT07491874

Symptom relief Sponsor: Kaplan Medical Center 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests if breathing nitrous oxide (laughing gas) can reduce pain and anxiety when removing a cervical stitch (cerclage) in late pregnancy. About 60 pregnant women will be randomly assigned to receive either nitrous oxide or standard care (no pain medicine) during the quick procedure. The goal is to see if it makes the experience more comfortable and satisfying.

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 60 people

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

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

May 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.

Inclusion Criteria: * Age ≥18 years * Women at ≥34 weeks of gestation * Singleton or twin pregnancy * Ability to understand, sign informed consent, and complete questionnaires Exclusion Criteria: * Triplet or higher-order pregnancy * Contraindications to nitrous oxide use * Fetal monitoring category 2 or higher * Maternal body temperature \>38°C * Significant vaginal bleeding * Severe preeclampsia * Cerclage removal under general anesthesia * Language or cognitive barrier * Baseline pain \>3 on VAS scale, prior to the procedure

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Conditions

The condition(s) this trial relates to.

cervical incompetence Premature Birth

As listed by the trial registrant

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

Cervical cerclage Cervical insufficiency Preterm delivery

How to take part

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

  1. The places running it

    4 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

  • Edith Wolfson Medical Center

    Holon, Israel

  • Kaplan Medical Center

    Rehovot, Central District, 7639302, Israel

  • Meir Medical Center

    Kfar Saba, Israel

  • Rabin Medical Center

    Petah Tikva, Israel

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