鼓膜正常または非穿孔の伝音性難聴:術前診断,術後成績を中心に

概要

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It is difficult to diagnose conductive deafness with intact or unperforated eardrum. We analyzed the preoperative diagnoses and post-operative results in 24 ears of 21 patients with middle ear abnormalities included 11 ears with congenital anomalies,9 ears with otosclerosis,2 ears with tympanosclerosis with intact eardrum and 2 ears with congenital cholesteatoma.<BR>For an operative diagnosis, it has been difficult to evaluate ossicular mobility from routine measurements. A new ossicular measuring system, the ossicular mobility analyzer, OMA, has been developed for the diagnosis of ossicular condition.<BR>Reconstruction of the ossicular chain was performed by Wullstein III or IV for ossicular anomalies, tympanosclerosis or congenital cholesteatoma and by stapedotomy for otosclerosis. The improvement rate of the air bone gap was 74.7% in 20 evaluable cases.
耳鼻咽喉科臨床学会の論文