Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
The Effect of Mouth Closure on Airflow in OSA
NCT06547658 · View on ClinicalTrials.gov ↗
Study Summary
Mouth breathing is associated with increased airway resistance, pharyngeal collapsibility, and obstructive sleep apnea (OSA) severity. It is commonly believed that closing the mouth can mitigate the negative effects of mouth breathing during sleep. However, we propose that mouth breathing serves as an essential route bypassing obstruction along the nasal route (e.g., velopharynx). The present study investigates the role of mouth breathing as an essential route in some OSA patients and its association with upper airway anatomical factors. Participants underwent drug-induced sleep endoscopy (DISE) with simultaneous pneumotach airflow measurements through the nose and mouth separately. During the DISE procedure, alternating mouth closure (every other breath) cycles were performed during flow-limited breathing. We evaluated the overall effect mouth closure on inspiratory airflow, and the change in inspiratory airflow with mouth closure across three mouth-breathing quantiles. We also evaluated if velopharyngeal obstruction was associated with mouth breathing and a negative airflow response to mouth closure.
Conditions Studied
Interventions
- OTHER Mouth closure
Study Locations (1)
Massachusetts
- Brigham and Women's Hospital — Boston
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 66 participants |
| Start Date | 2021-12-17 |
| Est. Completion | 2022-07-10 |
| Phase | NA |
Interested in This Trial?
Always speak with your doctor before enrolling in a clinical trial.
Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT06547658
The ClinicalTrials.gov registry entry for NCT06547658 describes a study currently listed as completed. It is categorized as NA, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 66 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Brigham and Women's Hospital, which has 929 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Hypopnea, Sleep appearing as the primary indexed condition, and to 1 intervention — of which Mouth closure is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT06547658 reports 1 study location spanning 1 distinct geographic area — top geographies include Massachusetts. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT06547658 about?
NCT06547658 is a clinical study titled "The Effect of Mouth Closure on Airflow in OSA". Mouth breathing is associated with increased airway resistance, pharyngeal collapsibility, and obstructive sleep apnea (OSA) severity. It is commonly believed that closing the mouth can mitigate the negative effects of mouth breathing during sleep. However, we propose that mouth breathing serves as ...
What is the current status of trial NCT06547658?
This trial is currently completed. It is a NA study. The enrollment target is 66 participants. The study started on 2021-12-17. Estimated completion is 2022-07-10.
What conditions does trial NCT06547658 study?
This clinical trial studies the following conditions: Hypopnea, Sleep. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT06547658?
The interventions under investigation include: Mouth closure (OTHER). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT06547658?
This trial is sponsored by Brigham and Women's Hospital, which has 929 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT06547658 being conducted?
This trial has 1 study location across Massachusetts. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
How Clinical Trials Work
Understand phases 1-4, trial design, randomization, and the informed consent process.
Patient Rights in Clinical Trials
Your rights as a participant: consent, withdrawal, privacy, and who to contact.
Finding the Right Clinical Trial
A practical guide to searching trials, understanding eligibility, and evaluating options.
All Guides
Browse our complete library of clinical trial educational resources.
Read our methodology — how this data is sourced, computed, and verified.