Can airway shape predict sleep apnea severity?
NCT ID NCT05774522
First seen Aug 11, 2026 · Last updated Aug 12, 2026 · Updated 1 time
Summary
This study investigates the link between the physical structure of the upper airway and its tendency to collapse during sleep, which is a key factor in obstructive sleep apnea. Researchers will measure airway collapsibility using a special pressure device, and assess anatomy via ultrasound and acoustic pharyngometry in 100 adults suspected of having sleep apnea. The goal is to see if these measurements correlate with apnea severity and could serve as screening tools.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Measurement of pharyngeal critical closing pressure (pCrit) and acoustic pharyngometry
- What this could lead to
- If successful, this could lead to better screening tools for sleep apnea and a deeper understanding of why airway collapse occurs.
- What could go wrong
- This is an observational study, so it won't test a treatment. The findings may not apply to all sleep apnea patients, and the measurements may not perfectly predict severity.
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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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100 people
The number who actually took part.
- Started
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Feb 2023
- Finished
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Jul 2023
- 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 to 85 years
- 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: - Any patient, consulting the sleep department of the Bichat hospital for suspected sleep apnea syndrome * Patient for whom an PSG are prescribed as part of care * Age ≥18 years and ≤85 years Exclusion criteria: - Recent ENT surgery (less than 6 months) * Pregnancy in progress (declared) * Pulsed oxyhaemoglobin saturation \< 88% at rest on awakening * Allergy to ultrasound gel * Patient with difficulties in understanding the French language * Vulnerable patient (guardianship, curators) * Lack of affiliation to a social security scheme * Lack of information and collection of informed, written and signed consent * Patient under AME
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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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Hôpital Bichat-Claude Bernard
Paris, 75018, France
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