[Effect and effectiveness of hyperbaric oxygen therapy in chronic hearing disorders. Report of 557 cases 1989].

After ten applications of hyperbaric oxygen therapy to 557 patients with hearing loss, 27.8% of the patients experienced a hearing improvement of more than 10 dB. Tinnitus improved in 62.2% of all cases. Hyperbaric oxygen therapy should be used for all cases of extreme hearing loss or severe tinnitus that is resistant to the usual therapy.