What Researchers Did
Researchers retrospectively reviewed the records of 97 cases that received hyperbaric oxygen therapy (HBOT) for idiopathic sudden sensorineural hearing loss (ISSNHL) to identify factors affecting treatment outcomes.
What They Found
The mean hearing gain after HBOT was 29.5 dB across all 97 cases. Statistically significant gains were observed with early HBOT onset (p = 0.016), a higher number of HBOT sessions (p < 0.01), steroid usage (p = 0.009), low frequency-ascending and total audiogram configurations (p < 0.01), and profound hearing loss (p = 0.011). Conversely, the success rate was significantly lower in cases with a high frequency-descending audiogram configuration (p < 0.001).
What This Means for Canadian Patients
Canadian patients with idiopathic sudden sensorineural hearing loss might experience better outcomes from hyperbaric oxygen therapy if treatment is initiated early and involves more sessions, especially if combined with steroid use. Understanding these influencing factors could help clinicians optimize treatment strategies for improved hearing recovery.
Canadian Relevance
This study has no direct Canadian connection as it was conducted in a different geographical region.
Study Limitations
As a retrospective study, this research is limited by its reliance on existing patient records, which may introduce biases or missing data.