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Can a handheld device match standard monitors for measuring exhaled CO2?

NCT ID NCT07816926

Diagnosis Sponsor: Malin Jonsson Fagerlund 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 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.
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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 Results may not be published yet.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)
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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

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Status unknown
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First seen Sep 14, 2026 · Last updated Sep 15, 2026 · Updated 1 time

Summary

Researchers are testing a portable mainstream capnograph called MARIE against a standard monitor, the Getinge Flow-i, in adults who are intubated for elective surgery. The study measures end-tidal carbon dioxide, the amount of CO2 a person breathes out, to see how closely the two devices agree. About 30 adults scheduled for surgery under general anesthesia with an arterial line take part. The goal is to find out whether the portable device gives reliable readings compared with the standard monitor.

What this could mean

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

Active substance
A portable mainstream capnograph called MARIE
What this could lead to
If MARIE measures end-tidal CO2 as accurately as a standard monitor, it could offer a portable option for monitoring breathing during anesthesia and intensive care.
What could go wrong
This is a small validation study in adults having elective surgery with intubation, so the results may not apply to other patients or settings. The device may not agree closely enough with the standard monitor.

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 30 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Dec 2026

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

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: * Adult, ≥18 years of age * Elective surgery under general anesthesia * Endotracheal intubation * Planned for arterial line Exclusion Criteria: * Unable to understand study information or sign the consent form

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As listed by the trial registrant

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

Capnography Intubation Monitoring

How to take part

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  1. The official record

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