title: Middle ear pressure following tympanoplasty for various middle ear diseases. Pressure related to follow-up period and retractions.
abstract: In 512 ears with various middle ear diseases, the middle ear pressure was measured a minimum of 2 years and a maximum of 10 years after tympanoplasty. The findings were related to the length of the follow-up period and to retractions of the drum and/or in the epitympanum. The tympanometric findings were best in sequelae to otitis with dry perforations, poorest in cholesteatomas and adhesive otitis. Tubal function had not further deteriorated 4 years after the operation. There was a highly significant correlation between the middle ear pressure and the frequency of retractions, which also does not essentially increase--except in the cholesteatoma cases.
mesh_terms: D000158:Acoustic Impedance Tests; D002781:Cholesteatoma / Q000503:physiopathology / Q000601:surgery; D004427:Ear Diseases / Q000503:physiopathology* / Q000601:surgery; D004432:Ear, Middle / Q000503:physiopathology* / Q000601:surgery; D005064:Eustachian Tube / Q000503:physiopathology; D005500:Follow-Up Studies; D006801:Humans; D009225:Myringoplasty; D010033:Otitis Media / Q000503:physiopathology / Q000601:surgery; D011312:Pressure; D013997:Time Factors; D014433:Tympanoplasty