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Breathing test may replace overnight sleep studies for CPAP settings

NCT ID NCT07554430

Knowledge-focused Sponsor: Mustafa Kemal University 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.
Paused
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 Results may not be published yet.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)
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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether a quick, non-invasive breathing test called impulse oscillometry (IOS) can help doctors find the right pressure settings for sleep apnea machines. Currently, patients often need an overnight sleep study to determine the correct pressure. The study will include 92 adults with moderate-to-severe obstructive sleep apnea and compare the breathing test results with the pressure settings determined during a standard sleep study.

What this could mean

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

What this could lead to
If successful, this could lead to a simpler way to set sleep apnea machines without needing an overnight sleep study.
What could go wrong
This is an early observational study with only 92 people. The breathing test may not accurately predict pressure settings for everyone.

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.

Participants

About 92 people

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

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

Jan 2027

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.

Who is studied

Adults with moderate-to-severe obstructive sleep apnea (OSA) undergoing PAP titration and IOS testing at Hatay Mustafa Kemal University.

Ages

18 to 80 years

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: * Adults aged 18 to 80 years * Diagnosed with obstructive sleep apnea (OSA) by overnight polysomnography (PSG) * Apnea-hypopnea index (AHI) ≥ 15 * Undergoing positive airway pressure (PAP) titration (CPAP or BPAP) * Able to perform impulse oscillometry (IOS) test * Provided written informed consent Exclusion Criteria: * Central sleep apnea * Neuromuscular disease or restrictive lung disease * Recent upper airway infection (\< 2 weeks) * Incomplete PSG or IOS data * Inability to cooperate with testing procedures

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Conditions

The condition(s) this trial relates to.

microcephaly 6, primary, autosomal recessive obstructive sleep apnea syndrome

As listed by the trial registrant

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

Obstructive sleep apnea (OSA)

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Hatay Mustafa Kemal University

    Antakya, Hatay, 31001, Turkey (Türkiye)

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