鼓室形成術III型・IV型の術後成績

概要

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Sixty ears receiving type III and twenty eight ears receiving type IV tympanoplsty, which were treated surgically between December 1983 and December 1991 and were followed for more than six months, were reviewed. The hearing result was classified as successful when the postoperative hearing level met at least one of three conditions: 1) air-bone gap less than 20 dB,2) hearing level above 40 dB, or 3) hearing gain more than 15 dB. Success was obtained in 50 ears (83.3%) with type III and 13 ears (46.4%) with type IV. Hearing results were analyzed according to type of disease, type of columella, whether the lesion was around the stapes, and management of the external auditory canal wall.<BR>As a postoperative complication, attic retraction occurred in 30 e ars (34.1%) and was most frequent. Exposure or extrusion of the columella occurred in 7 (29.2%) of 24 ears using PORP, and in 6 (33.3%) of 18 ears using TORP, but did not occur in cases using ossicle or cartilage.
耳鼻咽喉科臨床学会の論文