爆発による聴器障害の臨床的観察

　I．緒言

　私は外因性聴器障害研究の一端として頭部外傷音響外傷の臨床的観察を発表して来たが今回は爆発による聴器障害のそれを報告する。

Three hundred sixty five cases of acousticlesions caused by sudden explosion were exa-mined.

With the hearing loss under such circu-mstances the majority of the individuals were affected by conduction losses: high de-gree tinnitus aurium. This tinnitus proved to be a complicated process. Other questions such as vestibular functions, speech hearing and other clinical notes are discussed. The prognosis of the ruptured tympanum due to an explosion appeared to be rather unfavo-rable.