Progression of hearing loss in Meniere's disease
スポンサーリンク
概要
- 論文の詳細を見る
Fluctuating hearing loss is a characteristic feature of Meniere's disease, but in some cases, hearing deteriorates gradually and progresses to an irreversible state after repeated fluctuation. In other cases, hearing loss develops rapidly and to a moderate degree.<BR>Ninety-two cases of unilateral Meniere's disease according to the criteria of the Research Committee of Meniere's Disease of the Japanese Welfare Ministry were studied. Among them the progression of hearing loss of twenty-nine cases was evaluated, and three or more audiograms were obtained during the observation period of at least six months.<BR>Hearing loss was classified into four categories-progression, fluctuation, progression with fluctuation and unchanged. <I>Progression</I> was said to occur if the hearing level changed over two frequencies between 250Hz-4000Hz by 15dB increase and remained at this state for at least six months. <I>Fluctuation</I> in hearing was said to occur if the hearing level changed over two frequencies by at least 15dB and again returned to the original level. <I>Progression with fluctuation</I>. was said to occur if the hearing showed the conditions of both progression and fluctuation as mentioned above. <I>Unchanged</I> : No change during the observation period.<BR>The results were as follows : <BR>1) Hearing fluctuation was seen in most cases within three months.<BR>2) Progression of hearing loss was observed in 34% of twenty-nine cases, while fluctuation of hearing was seen in 41%.<BR>3) Hearing loss within one year after an initial vertiginous attack varied in degree, while the hearing loss was progressive with time.<BR>4) Progression with or without fluctuation can be judged within three years, according to the criteria mentioned above.<BR>5) Electrocochleographic studies using a trans-tympanic recording demonstrated positive summating potential (+SP) at 8000Hz in most cases. No changes of +SP were, however, observed after either endolymphatic sac operation or furosemide injection (20mg). Based on these findings mechanisms of hearing progression, the relationship of +SP to Meniere's disease and therapeutic effects of endolymphatic sac surgery as a preventive method for hearing deterioration or progression were discussed.
- 日本めまい平衡医学会の論文
著者
関連論文
- 第34回 日本平衡神経科学会
- 1.中耳および内耳疾患における側頭骨の形態学的検討/2.末梢平衡感覚器における抗生物質障害の実験的研究/3.Stria vascularisとPlanum semilunatum の比較検討/4.筋弛緩剤による前庭性外直筋活動の機構/5.反復誘発筋電図からみた家兎一側迷路破壊後の筋緊張について/6. 迷路と視器の干渉について/7.カエル摘出半規管受容器のAdaptationについて/カエル球形嚢神経および外半規管膨大部神経の動作流に関する知見/9.頭位変化と眼球偏
- 第33回 日本平衡神経科学会秋季学会
- 前庭器管の基礎的研究一般演題/頭位,頭位変換眼振の診断的意義/自発眼振におよぼす前庭性,視運動性刺激の影響-その1-/自発眼振におよぼす前庭性視運動性刺激の影響-その2-/温度検査と回転検査の成績が解離した場合の診断的意義/前庭器官の基礎的研究 シンポジウム(1)[生理]/前庭器官の基礎的研究 シンポジウム(II)[形態・生化学]/前庭器官の基礎的研究 シンポジウム(III)[病態]/CPC/展示
- 口蓋裂を伴つた咽頭舌奇形症例
- 鼻瘤症例 : ―外科的•療対する自験例の反省と問題点―
- 先天性舌癒合症の1例
- 末梢性顔面神経麻痺に対するNeuronographyの臨床的評価
- Psychosomatic study of vertigo
- Sjogren病における口唇腺生検
- ムンプス難聴
- タイトル無し
- Progression of hearing loss in Meniere's disease
- 聴神経腫瘍手術と聴力保存