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.



Eligible Ages
Over 18 Years
Eligible Genders
Accepts Healthy Volunteers

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

  • 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

Study Design

Study Type
Intervention Model
Single Group Assignment
Intervention Model Description
All patients who meet eligiblity will undergo HRM at the same time as the operative DISE procedure.
Primary Purpose
Device Feasibility
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
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
    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.

Recruiting Locations

Vanderbilt University Medical Center
Nashville, Tennessee 37232
Kate Von Wahlde, MJ, CCRP

More Details

Vanderbilt University Medical Center

Study Contact

Kate Von Wahlde, MJ, CCRP

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.


Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.