聴力改善を目的とした術後耳手術症例の検討

抄録

From November 1993 to March 2003, 23 ears with postoperative hearing impairment were reoperated in our hospital. Cases with otorrhea, and cholesteatoma detected preoperatively was excluded from this study. All 23 ears underwent the initial operations in other hospitals, and surgical information was not obtained in 17 patients. The interval from initial operation and reoperation was ranged from 12 months to 40 years, and only 4 ears were included in the group who were operated initially in the recent 5 years. Type IQ tympanoplasty for 13 ears and type IV tympanoplasty for 8 ears were performed. Total stapedectomy was performed for one ear in which the stapes accidentaly removed. Success rates of hearing improvement were 76.9% of type III tympanoplasty, and 62.5% of type IV. Success rate of all 22 ears exept for one case unable to follow was 72.7%. Complications such as facial paralysis, vertigo, deafness, and intracranial complications were not observed in all cases. Preoperative functional examinations of hearing impairment and image examinations (CT) are useful for postoperative ears.