一側聴耳が100dB以上の慢性中耳炎5例に対する鼓室形成術

抄録

Tympanoplasty on only hearing ears of profound hearing loss more than 100 dB with persistent otitis media was performed on 5 patients in Numazu City Hospital during 1996-2001. Two of 5 ears were postoperative otitis media and 3 were adhesive otitis media. Preoperatively, even by fitting a hearing aid, practical hearing levels was not obtained.
Our postoperative results of tympanoplasty in the patients were satisfactory. Compared with preoperative hearing level, postoperative hearing level showed improvement of 20 to 40 dB, and daily conversation was achieved at least by fitting a hearing aid in all the patients.
Although no consensus exist regarding indication and management of tymoanoplasty for only hearing ears, careful operation minimizing the risk to labyrinthine function seemed most effective for making risky ear with only hearing ear and profound hearing loss into safe and stable ear.