感音難聴の著名な改善をみた正円窓破裂修復手術例;4症例の考察

概要

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This is a report of four cases of perilymphatic fistulae in which profound sensory deafness was improved by surgical repair of the ruptured round window membranes. The age of the patients ranged from 8 to 18 years old and the preoperative hearing levels from 49dB to total deafness. A slap in the face in two cases, athletic sports in one and falling down in one preceded the deafness and vertigo of sudden onset. Exploratory tympanotomy was performed of 13, 17, 19 and 69 days, respectively, after the onset. In all the cases, perilymphatic leakage of very small amounts was confirmed. The ruptured window membranes were closed using the tragus perichondrium in three patients, and fascia with adipose tissue in the remaining one. Hearing improvement was remarkable especially in two patients, who regained almost normal hearing. The surgical prognosis for hearing is far more promising in children than in adults as long as the surgery is carried out at the appropriate time.
耳鼻咽喉科臨床学会の論文