Eustachian Tube Function in Patients with Symptoms on Baro-Challenge

Area of Science:

• Otolaryngology
• Auditory Physiology

Background:

• Obstructive Eustachian tube (ET) dysfunction can cause aural symptoms during pressure changes (baro-challenge).
• The relationship between measured ET function and the severity of symptoms experienced during baro-challenge requires further investigation.

Purpose of the Study:

• To determine if measurable differences in ET function exist between patients with obstructive ET dysfunction who experience severe symptoms on baro-challenge and those who do not.
• To evaluate the diagnostic accuracy of ET function tests in identifying patients with severe baro-challenge symptoms.

Main Methods:

• Recruited patients with obstructive ET dysfunction symptoms.
• Assessed ET function using 9 objective/semi-objective measures and 2 patient-reported outcome measures (PROMs).
• Analyzed passive and active ET opening scores and individual test diagnostic accuracy against clinical history and PROM data.

Main Results:

• Reduced passive and active ET opening was significantly associated with a history of baro-challenge pain.
• Some patients exhibited severe ET dysfunction without symptoms, while others had symptoms despite normal test results.
• No single ET opening test accurately predicted pain or symptom exacerbation during baro-challenge.

Conclusions:

• The link between aural pain during baro-challenge and ET function is more intricate than previously thought.
• Factors beyond objective ET function likely contribute to the experience of pain during pressure changes.