Tinnitus as a prognostic sign in idiopathic sudden sensorineural hearing loss.

Idiopathic sudden sensorineural hearing loss remains a controversial problem with respect to etiology and the factors that might predict a favorable prognosis. This study evaluated the possible prognostic factors of recovery in 67 patients with idiopathic sensorineural hearing loss treated with steroids (prednisone), plasma expanders (intravenous dextran), and vasodilators (papaverine). Clinical recovery was estimated by contrasting the audiometric results on admission and those at discharge 10 days later. The correlation between various potential prognostic factors and audiological improvement was calculated. Only two factors were found to be associated significantly with hearing improvement: tinnitus (p < .04) and the slope of audiogram on admission (p < .045). Tinnitus and the presence of an ascending audiogram were found to be correlated with a favorable outcome in idiopathic sensorineural hearing loss.