外傷性鼓膜穿孔症例の統計的観察

概要

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Ninety-Five cases of traumatic perforation of the eardrum observed during the last 14 years, were summarized and investigated.<BR>Among a number of cause s of damage, pick of ear wax was observed most frequently in the drum perforation by direct injury, and slap or assault was observed in the perforation by indirect force. Most perforations were found within one quadrant; that is in the antero-inferior or postero-inferior quadrant.<BR>The hearing impairm e nt has nothing to do with the size of perforations. The hearing level of bone conduction was reduced in the direct type more than in the indirect type. The improvement of hearing was expected to be poor in the indirect type.<BR>As treatment, most of the perforations were closed with conservative therapy. Operation treatments were performed in cases whose perforations were not closed during the 3 months after injury whether complications occurred or not.
耳鼻咽喉科臨床学会の論文