What Researchers Did
Researchers retrospectively reviewed the charts of 156 inpatients diagnosed with sudden sensorineural hearing loss (SSNHL) at a single institution between 1987 and 2000.
What They Found
An etiologic factor was identified in 23 of 156 (15%) cases of sudden sensorineural hearing loss (SSNHL), with 143 patients receiving multidrug therapy and 13 receiving hyperbaric oxygen. Poor recovery was significantly associated with male sex, the presence of both tinnitus and vertigo, and the initial severity of hearing loss.
What This Means for Canadian Patients
Canadian patients experiencing sudden sensorineural hearing loss (SSNHL) should be aware that a specific cause is often not found, and current treatments may not always lead to full recovery. Factors like male sex, initial hearing loss severity, and the presence of both tinnitus and vertigo may indicate a poorer prognosis.
Canadian Relevance
This study was conducted in a single institution outside of Canada, so its direct applicability to the Canadian healthcare context is limited.
Study Limitations
As a retrospective study from a single institution, these findings may not be generalizable to all sudden sensorineural hearing loss patients.