What Researchers Did
Researchers followed 50 patients with sudden hearing loss in one ear to see how their hearing changed over several years after treatment with intravenous corticosteroids.
What They Found
This observational study followed patients for a mean of 5.26 plus or minus 2.28 years and found that hearing in the affected ear stayed stable for most patients, while the unaffected ear tended to worsen over time. Of the patients evaluated, 54% showed no change in hearing over time, 26% showed worsening, and 20% showed improvement. Hearing changes were correlated with alcohol consumption and the presence of vasculopathies. On average, hearing at low frequencies improved over time.
What This Means for Canadian Patients
This abstract does not mention hyperbaric oxygen therapy, so it does not address HBOT. It does suggest that after sudden hearing loss without recurrence, the affected ear's hearing tends to remain stable long-term, while patients who drink alcohol or have vasculopathies (blood vessel disease) face a higher risk of their hearing worsening over time.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
The study is observational with no control group and does not report statistical tests confirming that alcohol consumption or vasculopathies directly cause hearing changes, so these associations should not be read as proven cause-and-effect relationships.