Clinical trial Recruiting at 1 site Observational Ages 18 to 70

Awake and Sleep Sound Screening for Obstructive Sleep Apnea

Official title: Acoustic OSA Prediction During Wakefulness and Monitoring During Sleep

Run by University of Manitoba · NCT04112927 · Data updated 2026-11-12

Researchers test whether analyzing breathing sounds can help screen for obstructive sleep apnea during wakefulness and while sleeping.

Quick facts

Study typeObservational
Ages18 Years to 70 Years
SexAll
Enrollment250 (estimated)
SponsorUniversity of Manitoba
Academic / other
Locations1 site (Winnipeg, Manitoba)
StatusRecruiting
StartedOctober 1, 2021
Main results expectedSeptember 1, 2028
Study endsDecember 23, 2028
Registry record updatedSeptember 30, 2026
Trial IDNCT04112927 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18–70 years with suspected OSA referred for PSG.

Probably not a fit

Individuals with chronic respiratory diseases, insomnia or restless legs, drug addiction, or those under direct supervision of the PI may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study assesses the feasibility of using tracheal breathing sounds to detect obstructive sleep apnea (OSA) both when patients are awake and during sleep, and to understand the relationship between airflow and sound in both states. The approach aims to create a faster, more convenient screening method that could reduce reliance on full PSG studies. Participants include adults suspected of OSA and referred for PSG, with exclusions for certain respiratory and sleep disorders. The study compares the AWakeOSA sound-analysis algorithm to existing screening methods in a real-world clinical setting and at a single site. Outcomes focus on feasibility, sensitivity, and specificity of awake and sleep sound-based predictions for OSA presence and severity.

Why it matters

Potential benefit: If successful, this approach could streamline OSA screening and reduce unnecessary PSG referrals.

How similar studies have gone: Previous work shows promise for sound-based screening tools with good sensitivity and specificity in related contexts, but this exact awake-and-sleep AWakeOSA approach is exploratory.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* 1\) age between 18 to 70 years.
* 2\) suspected of OSA and referred to full PSG study by a doctor.

Exclusion Criteria:

* 1\) being diagnosed with a chronic respiratory disease including pulmonary fibrosis, emphysema, respiratory infectious disease, nocturnal asthma, obstructive pulmonary lung disease, pulmonary hypertension, congestive heart failure, sleep related hypoventilation and neuromuscular disorders.
* 2\) having insomnia or restless leg.
* 3\) drug addiction.
* 4\) under the current, direct supervision of the PI of this study.

Where it's running

  • University of Manitoba
    Winnipeg, Manitoba, Canada
    Recruiting

Study contacts

  • Principal investigator: Zahra Kazem-Moussavi, Ph.D. — University of Manitoba
  • Study coordinator: Abnoor Kaur, M.Sc.
  • Email: abnoorkaur9@gmail.com
  • Phone: 2044747023

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.