본교실에서 경험한 전음성난청의 임상

Background and Objectives: Conductive hearing loss (CHL) is very intersting part to otologic surgeon. There was few data about the incidence and clinical characteristics of CHL. Materials and Methods: We analyzed retrospectively 413 cases (826 ears) of patient who undergone pure tone audiometry at Pusan National University Hospital from 1999 to 2001. We performed eight case of exploratory tympanotomy and evaluated the result of surgery. Results: The incidence of CHL was 17.3%, whereas sensorineural hearing loss was 63.6%. The most common cause of CHL was otitis media, followed by ossicular disruption. We performed exploratory tympanotomy in eitht cases, and could get satisfactory hearing results in six cases. Conclusions: Although the incidence of CHL is decreasing these days, we have to pay attention to this because hearin loss can be recovered dramatically by surgery. (J Clinical Otolaryngol 2003;14:294-298)