Audiometric testing in acute low-tone sensorineural hearing loss

Objective To identify the characteristics and values of audiometric testing in acute low-tone sensorineural hearing loss in improvig diagnosis and treatment. Methods MAudiometric and imaging results were reviewed for patients with acute low-tone sensorineural hearing loss admitted to our hospital from July 2008 to May 2010. Results Of the 15 patients studied, an apparent causative factor was identified in 9 (60.0%). In 8 patients (53.3%) there was recurrence of hearing loss during follow up. No difference was found between male and female patients regarding cause and recurrence of hearing loss. Electrocochleogram was performed in 8 patients, in whom 5 (62.5%) showed abnormal -SP/AP ratios. Conclusion The examinations including pure tone audiometry, electrocochleogram (ECochG), DPOAE and ABR have more significance than others in acute low frequency sensorineural hearing loss. Studies are needed for ideal management of this condition, which is probably associated with the social stress. Its pathophysiology likely involves an array of abnormalities including endolymphatic hydrops, autoimmune disorders and autonomic nervous system dysfunction.