What Researchers Did
Researchers conducted a historical cohort study comparing intratympanic steroid injection, hyperbaric oxygen, and combination therapy as salvage treatments for 103 patients with sudden sensorineural hearing loss refractory to systemic therapy.
What They Found
All three salvage therapies, intratympanic steroid injection, hyperbaric oxygen, and combination therapy, showed significantly larger hearing gains in pure-tone average compared to the control group. The combination therapy resulted in a significantly larger word recognition score improvement (p = 0.035) and greater hearing gains at 250 Hz (p < 0.05) compared to individual therapies or control.
What This Means for Canadian Patients
Canadian patients with sudden sensorineural hearing loss that does not respond to initial systemic therapy may benefit from salvage treatments like intratympanic steroid injections, hyperbaric oxygen, or a combination of both. These options could offer a chance for improved hearing outcomes, particularly in word recognition and lower frequencies.
Canadian Relevance
This study has no direct Canadian connection as it was conducted in an academic medical center outside of Canada.
Study Limitations
A key limitation is its historical cohort design, which means it was not a randomized controlled trial, and further prospective studies are needed for confirmation.