中耳根治手術と術後聴力に関する研究

概要

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On the ear of 112 cases for which radical mastoidectomy had bee done, the auther perfor-med the audiometric test of hearing on bone and air conduction. The results were as follows; 1)In the cases whose hearing improved after operation the upper limit of air conduction hearing reached to the 25 db line on the audiogram. 2)The postoperative hearing was mainly depend on the mobility of the stapes and the round window membrane, and the condition of the tympanic cavities whether they were dry and thinly epidermized or not.
社団法人日本耳鼻咽喉科学会の論文