最近経験した突発難聴の3症例

• Published in: JIBI INKOKA TEMBO Vol. 26; no. 5; pp. 599 - 606
• Main Authors: 奥田, 雪雄, 村上, 嘉彦, 富山, 紘彦
• Format: Journal Article
• Language: Japanese
• Published: 耳鼻咽喉科展望会 1983; Society of Oto-rhino-laryngology Tokyo
• ISSN: 0386-9687; 1883-6429
• DOI: 10.11453/orltokyo1958.26.599

In recent years, a sudden hearing loss showing a temporal severe decrement in hearing during the early stage after the onset of the disease without any reference to the treatments, has attracted the attention of otologists. This hearing loss is evidently different from usual cases of sudden hearing impairments, including sudden deafness, which shows a severe loss at the time of onset and no deterioraton in hearing during any time of the course. The authors report clinical features of this characteristic sudden hearing loss in this article.Case 1 is a 21-year-old student who was treated with the administration of steroid, case 2 a 54-year-old housewife with intravenous injection of low molecular dextran L solution, and case 3 a 51-year-old official with administration of vitamine and vasodilator alone. The appearance of hearing loss at the time of onset was sudden and the hearing threshold at the time of admission ranged from 40 dB to 60 dB in each case. The threshold began to deteriorate on the 3 rd to 5 th day after the onset. The threshold at that time ranged from 70 dB to more than 85 dB and was unmeasurable at low frequency. This severe hearing loss began to improve within the 9 th to 12 th day and returned to normal within the 14 th to 20 th day after the initial onset of hearing loss. From the symptoms of the 3 cases mentioned above, the clinical features of this characteristic sudden hearing loss are summarized as follows.The hearing loss at the time of onset is not always severe. The decrement in hearing is most severe at low frequencies. Recovery of hearing is not always complete. The tinnitus and fullness of ear are quite common, but vertigo is not. The decrement in hearing develops without any reference to the administration of steroids, even in cases in which a viral infection is suspected.The sudden hearing loss reported here is a specific and unusual ear disease that requires further study.