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New anesthesia method could cut toxic waste and patient risks

NCT ID NCT03014336

Knowledge-focused Sponsor: DMF Medical Incorporated 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested a new method to remove carbon dioxide from anesthesia breathing circuits without using chemical filters. Current chemical filters can produce harmful compounds, increase costs, and create environmental waste. The study involved 286 low-to-medium risk surgery patients to see if the new method keeps CO2 levels safe during procedures.

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

286 people

The number who actually took part.

Started

Mar 2017

Finished

Jul 2024

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

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: * American Society of Anesthesiologists Physical Status Class I, II, III (low-medium risk patient) * English-speaking patients Exclusion Criteria: * Self-reported as pregnant * American Society of Anesthesiologists Physical Status Class IV (high risk patient) * Patients scheduled for emergency surgery * Documented respiratory disease, including COPD and severe asthma * Documented elevated pressure in the brain (intra cranial pressure, ICP)

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As listed by the trial registrant

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

Anesthesia

Contacts and locations

Locations

  • McGill University Health Centre

    Montreal, Quebec, H4A 3J1, Canada

  • Queen Elizabeth II HSC, Halifax Infirmary Site

    Halifax, Nova Scotia, B3H 3A7, Canada

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