Healthy volunteers help uncover how breathing machines and body position impact vein flow
NCT ID NCT07273617
First seen Jun 27, 2026 · Last updated Aug 21, 2026 · Updated 1 time
Summary
This study looks at how different breathing pressures and lying on your stomach change blood flow in the veins of 40 healthy adults. Researchers use ultrasound to measure vein congestion. The goal is to better understand these effects, not to treat any disease.
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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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40 people
The number who actually took part.
- Started
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Sep 2025
- Finished
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Dec 2025
- 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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Accepted
You do not need to have the condition being studied to take part.
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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: * Voluntary participants ≥ 18 years in good overall health with no relevant organ dysfunction in their medical history and signed informed consent form. Exclusion Criteria: * Non-French or non-German speakers * Unable to provide informed consent * Body mass index \> 40kg/m * Self-reported pregnancy * History of pneumothorax * Previously participated in the study
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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.
Contacts and locations
Locations
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University Hospital Basel, Intensive Care Unit
Basel, 4031, Switzerland
More trials for these conditions
Other studies related to the condition(s) this trial covers.