Patulous Eustachian Tube Dysfunction: Patient Demographics and Comorbidities.

Objective: The objective is to describe a large cohort of patients presenting with patulous Eustachian tube (pET) dysfunction. Study Design: Retrospective patient series. Setting: Tertiary referral center. Patients: All outpatient visits (2004-2016) that were assigned ICD9 code (381.7-Patulous Eustachian tube) were screened. Only patients with observed tympanic membrane movements during ipsilateral nasal breathing or acoustic reflex decay testing demonstrating transmitted nasal breathing were included (n = 190, n = 239 ears). Main Outcome Measures: Demographics and nasopharyngoscopy/otomicroscopy findings by comorbidities. Results: The majority (54%) was female and mean age of symptom onset was 38.0 (SD 20.0) years. Common symptoms included voice autophony (93%), breath autophony (92%), aural fullness (57%), pulsatile tinnitus (17%), and crackling or rumbling sounds (14%). Symptoms increased in frequency and duration with time (65%), were exacerbated with exercise (27%), and improved with placing the head in a dependent position (65%), sniffing (28%), upper respiratory infection (8%), and ipsilateral internal jugular vein compression (12%). In 52% pET was bilateral. Common comorbidities include environmental allergy (49%), weight loss (35%), laryngopharyngeal reflux (33%), anxiety (31%), autoimmunity (13%), and neuromuscular disease (8%). Allergy and anxiety patients were younger and more likely to have tonic contraction of the tensor veli palatini on exam (p

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