The author experienced 32 cases (37 ears) of sudden deafness and treated them with intravenous injection of consentrated sodium bicarbonate solution.
Their symptoms and clinical examinations suggested more or less the existence of peripheral circulatory disturbances (angioneurosis) in the inner ear.
In the cases which showed good recovery of hearing, the author observed following characteristics: 1) young men, 2) no signs of vestibular disturbance, 3) recruitment positive, 4) early stage of disease.