Clinical trial Recruiting at 1 site Observational Ages 20 and up

How surgery for obstructive sleep apnea affects swallowing and oral function

Official title: The Effects of Surgery on Improving Oral Frailty and Dysphagia in Patients With Obstructive Sleep Apnea (OSA): A Prospective Cohort Study

Run by National Sun Yat-sen University · NCT07880067 · Data updated 2026-11-12

This study compares swallowing and oral function before and after surgical treatment for OSA versus non-surgical care in adults with moderate-to-severe OSA.

Quick facts

Study typeObservational
Ages20 Years and up
SexAll
Enrollment450 (estimated)
SponsorNational Sun Yat-sen University
Academic / other
Locations1 site (Kaohsiung City)
StatusRecruiting
StartedJune 12, 2026
Main results expectedDecember 31, 2028
Study endsDecember 31, 2028
Registry record updatedOctober 19, 2026
Trial IDNCT07880067 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 20 years or older with moderate-to-severe OSA (AHI ≥ 15) who plan to pursue next-step treatment and consent to participate.

Probably not a fit

Patients who do not experience changes in swallowing or oral function after treatment or whose baseline risk factors minimize potential benefits may see no improvement.

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

What this trial studies

This prospective observational cohort follows adults with moderate-to-severe obstructive sleep apnea who choose their next-step treatment at a sleep clinic in Taiwan. Participants are grouped by treatment choice—surgery or non-surgical care such as CPAP—and are assessed for swallowing difficulty and oral frailty at baseline, 1, 3, and 6 months after treatment. The study aims to understand how upper-airway surgery for OSA may impact swallowing function and oral health, including seven indicators of oral hypofunction. It is the second phase of a two-phase project, with Phase 1 examining retrospective health data to compare dysphagia incidence between OSA and non-OSA controls.

Why it matters

Potential benefit: If successful, findings could clarify risks or benefits of OSA surgery on swallowing and oral health, informing patient choices.

How similar studies have gone: Previous observational work has linked OSA and dysphagia; this study adds prospective data on surgical outcomes, which is relatively novel in this specific context.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Diagnosed by a physician with moderate-to-severe obstructive sleep apnea (apnea-hypopnea index \>= 15 events/hour)
* Aged 20 years or older
* Willing to receive next-step treatment for obstructive sleep apnea
* Willing to participate and provides written informed consent

Exclusion Criteria:

* Diagnosed with central sleep apnea
* Neuromuscular disease (e.g., stroke, Parkinson's disease)
* Diagnosed with oral cancer and currently receiving oral treatment

Where it's running

  • Kaohsiung Armed Forces General Hospital
    Kaohsiung City, Taiwan
    Recruiting

Study contacts

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.