[Is sudden sensorineural hearing loss a therapeutic emergency? Early results in a prospective cohort of 136 patients].

Idiopathic sudden sensorineural hearing loss is one of the most controversial issues in otology. A prospective cohort study including 136 sudden hearing losses seen at the ENT emergency referral center of Lariboisiere Hospital during an 18-month period was conducted. Patients were hospitalized and a corticotherapy course was administered, eventually associated with an antiviral treatment, low molecular weight dextran or sedative. At the end of the 5-day hospitalization, 74% of the patients had recovered, at least partially, with a mean gain of 22 dB. The outcome was considered satisfactory, i.e. superior to 50% of the initial loss, in 30% of the patients. After 1 month, 86% of the patients recovered at least partially with a mean gain of 30 dB. The outcome was considered satisfactory in 44% of the patients. A prognosis analysis showed that vertigo, age of the patient and anacusis are pejorative factors. Ascending audiogram shapes seem to involve a better prognosis. The therapeutic delay is not correlated with the quality of the outcome, which questions the classical notion of therapeutic emergency.