[Sudden deafness and its therapy. Clinical study of 548 cases].

Analysis of 548 cases of sudden deafness shows impressively the importance of an infusion therapy with drugs improving the circulation which should be started as soon as possible. The greatest success could be made in the deep frequencies, whereas in the high frequencies the results were lower by nearly 8 decibels. Patients with sudden deafness on both sides or recurrent sudden deafness showed significantly less improvement of hearing than patients with first-time sudden deafness on one side. Remarkable is the continuous growth of sudden deafness in the low frequencies only, a phenomenon which was rarely seen one generation ago. Can this be interpreted as a change in the pattern of sudden deafness?