What Researchers Did
Researchers retrospectively investigated the effectiveness of combined steroid and hyperbaric oxygen therapy for hearing loss after acoustic trauma from firearms training, also examining the impact of treatment delay.
What They Found
Among 48 patients (73 ears), complete or partial treatment response was observed in 21.6% (8 of 37 ears) for early treatment (Group A) and 8.3% (3 of 36 ears) for delayed treatment (Group B). Overall, the combined therapy had a very low success rate, with 78.4% of early-treated ears and 91.7% of delayed-treated ears showing no improvement. While early treatment showed higher hearing gain on high frequencies at Week 6 (p < 0.05), this did not translate to a significant difference in overall clinical outcome between groups (p = 0.095).
What This Means for Canadian Patients
Canadian patients experiencing hearing loss from acoustic trauma, such as from firearms, should seek medical attention promptly, as early treatment may offer some benefit. However, given the low success rates of combined steroid and hyperbaric oxygen therapy, emphasizing protective measures to prevent acoustic trauma remains crucial.
Canadian Relevance
This study was not conducted in Canada and has no direct Canadian connection.
Study Limitations
As a retrospective study, it is limited by its design, small sample size, and the low overall success rate of the investigated therapy.