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Warm gas during keyhole surgery may cut pain and opioid use

NCT ID NCT05934981

Symptom relief Sponsor: Bordeaux Colorectal Institute Academy 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether using warm, humidified carbon dioxide gas during low-pressure laparoscopic colorectal surgery reduces pain 24 hours after the procedure. 148 adults having surgery for colon or rectal tumors (benign or malignant) took part. One group received warm, moist gas; the other received standard cold, dry gas. The main goal was to see how many patients had mild pain (score 3 or less on a 0–10 scale) without needing strong painkillers.

What this could mean

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

Active substance
warm, humidified carbon dioxide gas used during laparoscopic surgery
What this could lead to
If it works, this could lead to less pain and fewer opioids after colorectal surgery, helping patients recover more comfortably.
What could go wrong
This is a small, completed trial with 148 patients. The benefit may be small or not apply to all surgeries. Pain is subjective and results may not be widely generalizable.

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

148 people

The number who actually took part.

Started

Aug 2023

Finished

Jun 2026

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

Anyone

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: * Colorectal surgery for malignant or benign pathology * Surgery without stoma * Patient operable by laparoscopy or robot assisted under low pressure pneumoperitoneum * Age ≥ 18 years old * Patient affiliated to a social security system or beneficiary of the same * Informing the patient and obtaining free, informed, and written consent, signed by the patient and his investigator. Exclusion Criteria: * Laparotomy procedure * Total or Subtotal Colectomy * Transverse segmental colectomy * Proctectomy with stoma or Total Coloproctectomy * Procedure associated with colorectal surgery (except appendectomy or liver biopsy) * Patient with stoma * Probable realization of a stoma during the operation * Crohn's disease, Hemorrhagic Rectocolitis (UC) with VAS \> 3 * Diverticulitis or Sigmoiditis with VAS \> 3 * Endometriosis with VAS \>3 * VAS before surgery\> 3 * BMI ≥ 30 * ASA ≥ 3 (except if ASA 3 for non-cardiac and/or vascular diseases) * History of laparotomy * Emergency surgery * Pelvic Sepsis or Preoperative Fistula * Pregnant woman, likely to be, or breastfeeding * Persons deprived of their liberty or under measure of judicial protection (curators or guardianship) or unable to give their consent * Persons undergoing psychiatric treatment without their consent * Persons admitted to a health or social establishment for purposes other than research * Inability to undergo medical monitoring of the trial for geographic, social or psychological reasons

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Conditions

The condition(s) this trial relates to.

colonic neoplasm colorectal neoplasm

As listed by the trial registrant

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

Benign or malignant rectal or colon tumors Colorectal surgery

Contacts and locations

Locations

  • Clinique TIVOLI DUCOS - Bordeaux Colorectal Institute

    Bordeaux, France

  • HOPITAL NORD APHM - Service de Chirurgie Digestive

    Marseille, France

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