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 type | Observational |
|---|---|
| Ages | 18 Years to 70 Years |
| Sex | All |
| Enrollment | 250 (estimated) |
| Sponsor | University of Manitoba Academic / other |
| Locations | 1 site (Winnipeg, Manitoba) |
| Status | Recruiting |
| Started | October 1, 2021 |
| Main results expected | September 1, 2028 |
| Study ends | December 23, 2028 |
| Registry record updated | September 30, 2026 |
| Trial ID | NCT04112927 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
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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
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.