Long-term Follow-up Observation of Idiopathic Sudden Sensorineural Hearing Loss

Abstract

We followed 55 patients (56 ears) with idiopathic sudden sensorineural hearing loss for more than one year and examined their audiometrical changes once a year. There was no difference in audiometrical changes between affected ears and unaffected ears. The hearing change on longterm observation didn't correlate with both prognosis and audiogramic pattern about 1 month after the onset. We considered that the damage in the inner ear had fixed after an acute period, regardless of the etiology of idiopathic sudden sensorineural hearing loss.