Patients with sudden deafness who were treated either in our department or in our branch hospital between January 1984 and December 1994 were divided into two groups. Group A consisted of 69 patients who were treated with steroids, vasodilators, and stellate ganglion block but without hyperbaric oxygen therapy. Group B consisted of the other 85 patients who were treated with not only steroids, vasodilators, and stellate ganglion block but also with hyperbaric oxygen therapy. Patients in the two groups showed no significant difference in age, or number of patients with vertigo, but the initial audiogram was worse and time from onset to consultation were significantly greater in group B than those in group A. The prognoses of the two groups were analyzed by several issues, such as initial audiogram, time from onset to consult and there was no significant difference.
