New mask designs aim to improve CO2 removal in breathing emergencies
NCT ID NCT06483984
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares three different facemasks used with a breathing machine (noninvasive ventilation) in 20 people whose lungs are not removing carbon dioxide well. The goal is to see which mask reduces the work of breathing and helps clear CO2 more effectively. Participants will try each mask in a random order, and researchers will measure breathing effort and blood gas levels.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2024
- Expected to finish
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Oct 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: Acute respiratory failure with * PaCO2 ≥ 45 mmHg; * Arterial pH \< 7.35; * Signed written informed consent Exclusion Criteria: * Respiratory rate \< 12 bpm; * Immediate need for intubation; * Haemodynamic instability (Systolic blood pressure \<90 mmHg or mean arterial pressure \<65 mmHg) and/or lactic acidosis (lactate \>5 mmol/L) and/or clinically diagnosed shock; * Metabolic Acidosis; * Recent head surgery or anatomy that prevent the application of facemasks; * Any contraindications to oesophageal balloon insertion and/or electrical impedance tomography (EIT) belt placement. * Any contraindications to facemask noninvasive ventilation.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
2 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Fondazione Policlinico Universitaro A. Gemelli IRCCS
RECRUITINGRome, Italy
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General intensive care unit, Fondazione Policlinico A. Gemelli IRCCS
RECRUITINGRoma, Italy
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Other studies related to the condition(s) this trial covers.
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- Could a spirometer test guide breathing support in respiratory failure?