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CompletedNCT03198416Updated Jan 26, 2024

Pharyngeal Anatomy In Obstructive Sleep Apnea With HRM

An interventional study of High-resolution pharyngeal manometry catheter in Obstructive Sleep Apnea, sponsored by Vanderbilt University Medical Center. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-01-26.

Sponsored by Vanderbilt University Medical Center · Not applicable, Interventional, and Device feasibility

From the registry’s dates

  • Primary completion was Jun 2019, 7 years 3 months ago, and no results have been posted to the registry.
Phase
Not applicable
Study type
Interventional
Enrollment
60
Allocation
Not applicable
Ages
18 Years and older
Sex
All
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Study summary

This is a single-arm study involving the use of a high resolution manometry (HRM) diagnostic device that is not utilized in any clinical decision-making processes. All patients scheduled for DISE as part of their regular clinical care will be screened for enrollment via described inclusion and exclusion criteria.

Read the detailed description

High-resolution pharyngeal manometry (HRM) is a diagnostic technique that has the potential to objectively measure pharyngeal collapse patterns in obstructive sleep apnea (OSA) during sedation as well as natural sleep. The purpose of this study is to assess the utility of HRM in objectively mapping patterns of pharyngeal collapse observed during drug-induced sleep endoscopy (DISE). Quantifying pharyngeal collapse patterns that occur during sedation and in natural sleep may significantly impact the selection and success of surgical treatments, as well as surgical outcome assessment.

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Conditions studied

03

In context

Apnea

1,422 studies on the registry are indexed under Apnea; 159 are open to participants now.

This study's enrollment of 60 is above the median of 50 across 965 interventional studies indexed under Apnea.

Browse Apnea studies →

Lead sponsor

Vanderbilt University Medical Center is the lead sponsor of 824 studies on the registry; 164 are open to participants now.

Of its 122 completed or terminated interventional studies of FDA-regulated products, 91 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Adult patient (≥18 years old)
  • A diagnosis of obstructive sleep apnea as determined by polysomnogram with an apnea-hypopnea index of ≥ 5.0/hr
  • Intolerant of continuous positive airway pressure (CPAP) therapy due to physical or psychosocial limitations as determined by PI
  • Scheduled to undergo DISE as part of routine clinical assessment for further evaluation of pharyngeal anatomy

Exclusion criteria

Exclusion Criteria:

  • Patient is unable to consent for research due to a pre-existing neurologic condition as determined by PI
  • Patient is unable to consent for research due to language barriers
  • Patient has a history of egg allergy as determined by history or self- report
  • Patient is pregnant as determined by patient report or preoperative anesthesia evaluation
  • Cardiopulmonary or other medical conditions precluding safe sedation as determined by clinical history and exam
  • History of palatal or pharyngeal airway surgery except tonsillectomy as determined by clinical history and exam
  • History of radiation treatment to the head or neck as determined by clinical history and/or exam
  • Severe nasal airway obstruction preventing simultaneous flexible nasopharyngoscopy and manometry probe insertion as determined by physical exam
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Study design

Phase
Not applicable
Primary purpose
Device feasibility
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
60 participants (actual)

Study arms

  • Experimental
    Investigational Device

    Consented participants who meet eligibility will have a drug induced sleep endoscopy (DISE) with the Solar GI High Resolution pharyngeal Manometry system.

    Device: High-resolution pharyngeal manometry catheter

Interventions

  • DeviceHigh-resolution pharyngeal manometry catheter

    The system is a widely-used tool in gastrointestinal medicine for high resolution mapping of pressures within tubular organs.The device will be deployed trans-nasally into the pharyngeal and esophageal lumen in exactly the same fashion as is done for motility studies.

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What researchers measure

Primary outcomes

  1. Pharyngeal pressure differentials

    A high-resolution pharyngeal manometry catheter will be used to capture air pressure data in millimeters of mercury at 0.8mm intervals throughout the pharynx and proximal esophagus during the drug-induced sleep endoscopy procedure. This data will be used to generate maps of pressure data over time.

    Time frame: Collected during operative procedure, taking about 15 minutes.

  2. Video endoscopy of pharyngeal collapse

    Video from the flexible nasopharyngoscopy exam conducted during the drug-induced sleep endoscopy will be recorded and time-synched to the high-resolution pharyngeal manometry catheter output. The video results will be graded by a trained reviewer using a validated scoring system called the VOTE classification. The VOTE system is a subjective scoring system based on video endoscopy that scores the degree and configuration of airway obstruction related to the velum (soft palate), oropharyngeal lateral walls, tongue base, and epiglottis. The VOTE classification results will be compared to the pressure catheter results to examine for correlations.

    Time frame: Collected during operative procedure, the video endoscopy will take about 15 minutes.

Secondary outcomes

  1. Patient tolerance of catheter

    Patient comfort as indicated by pre operative pain survey

    Time frame: Completed pre-operatively, after catheter insertion, taking less than 5 minutes.

  2. Patient tolerance of catheter

    Patient comfort as indicated by post operative pain survey

    Time frame: Completed at follow up visit about 1 week post-operative, taking less than 5 minutes.

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Study locations

1 site
  • Vanderbilt University Medical Center
    Nashville, Tennessee 37232, United States
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References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 26, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03198416
Lead sponsor
Vanderbilt University Medical Center
Responsible party
David Kent (Assistant Professor, Department of Otolaryngology, Vanderbilt University Medical Center) — Principal investigator
First posted
Jun 26, 2017
Start date
Dec 11, 2017
Primary completion
Jun 24, 2019
Completion
Jun 24, 2019
Last update
Jan 26, 2024

Study contacts

David T. Kent, MD
principal investigator · Vanderbilt University Medical Center

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jan 2024. You cannot join it, but the record below documents what was studied.

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