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Does catheter length matter? study tests 4 cm vs 5 cm for better labor pain relief

NCT ID NCT04946032

Symptom relief Sponsor: Samuel Lunenfeld Research Institute, Mount Sinai Hospital Source: ClinicalTrials.gov ↗

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study looked at whether leaving 4 cm or 5 cm of the epidural catheter inside the spine works better for pain relief during labor in non-obese women. About 200 women in active labor were randomly assigned to one of the two lengths. The goal was to see which length provides more reliable pain control and fewer 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

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

200 people

The number who actually took part.

Started

Nov 2021

Finished

Jul 2024

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 to 50 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: * All women aged 18 years and above. * In established second stage of labor. * 3-7 cm dilation at time of insertion. * Women with BMI \< 40 kg/m2 Exclusion Criteria: * Known contraindication to epidural insertion. * Inability or unwillingness to provide written consent. * Previous difficult epidural insertion. * Previous failed epidural. * Imminent instrumental or operative delivery. * Dural puncture. * Combined spinal epidural analgesia. * High BMI \> 40 kg/m2

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Conditions

The condition(s) this trial relates to.

Labor Pain

As listed by the trial registrant

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

Labor pain

Contacts and locations

Locations

  • Mount Sinai Hospital

    Toronto, Ontario, M5G1X5, Canada

More trials for these conditions

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