強大音による急性感音難聴の検討

抄録

Acute sensorineural hearing loss after exposure to loud noise was observed in 15 patients who visited our clinic between 2011 and 2013. The patients included a larger proportion of men than women, and the age distribution was in the 40 to 50-years range. The chief complaint of most patients was hearing loss accompanied by tinnitus. According to audiometry, the hearing type was the flat type was in the majority of patients. Patients with acute acoustic trauma showed a higher recovery rate than those with acute acoustic hearing loss. Delayed recovery due to repetitive exposure to a sound load causes worsened acoustic susceptibility, accounting for the prognostic difference between acute acoustic trauma and acute acoustic hearing loss. Because it is difficult to determine whether acute hearing loss is reversible or irreversible prior to treatment, it is important to start treatment immediately after injury.