Despite a prolonged therapy with vaso-active drugs, tinnitus persisted in 36 cases.Ĭontrolling noise and its harmful effects through technical devices and safety professionals programs are the best way to reduce the frequency and the sensorineural sequelae due to acute acoustic trauma. Acoustic trauma is an injury of the inner mechanism of the ear, usually the ear drum, due to the result of very loud noise. A good evolution was noted in 52 cases (81%) and the mean of hearing level after therapy was: 24 dB +/- 12 dB. The follow-up consisted of questioning about symptoms, clinical examination and pure-tone audiometry. Hyperbaric oxygenotherapy have been administrated for 25 patients. It was given intravenously during 10 days and then orally with vasodilators during one to 3 months. The therapy consisted of systemic cortisteroids associated in all the cases to peripheral vasodilators. Audiometric exams found a sensorineural hearing loss with a hearing level average of 38 decibels (dB) +/- 14 SD. Clinical complaints were acute hearing loss with tinnitus. The cause of acoustic trauma was a firing of a gun near the ear in 48 cases, an explosion near the ear in 5 cases and a sudden exposure to loud noises near military planes in 11 cases. The therapeutic and evolutive data were detailed and discussed.Īll our patients were male with a mean age of 34 years. Auditory evoked potentials were performed in 17 cases. Hearing levels were measured at the frequencies 500, 1000, 20 Hertz. For all the cases, a clinical examination associated to a pure-tone audiometry was conducted. The recovery period can sometimes last up to a week. The authors report a retrospective study about 64 patients followed for an acute acoustic trauma during a period of 8 years (2006 to 2013). Hearing loss or tinnitus after an acoustic trauma is usually temporary, and disappears after 16 to 48 hours. The consequence of an exposure to intense sounds can be a temporary or permanent hearing loss and even with a rapid therapeutic management, severe sensorineural sequelae may persist.
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