Vestibular evoked myogenic potentials in patients with contralateral delayed endolymphatic hydrops

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• 作者：Masafumi Ohki ; Masaki Matsuzaki ; Keiko Sugasawa and T. Murofushi
• 关键词：Keywords Vestibular evoked myogenic potential ; Saccule ; Vestibulocollic ; Otolith ; Glycerol ; Meni¨¨re’ ; s disease ; Delayed endolymphatic hydrops
• 刊名：European Archives of Oto-Rhino-Laryngology
• 出版年：2002
• 出版时间：January 2002
• 年：2002
• 卷：259
• 期：1
• 页码：24-26
• 全文大小：24 KB

文摘

We studied vestibular evoked myogenic potentials (VEMPs) in nine patients with unilateral profound hearing loss followed by contralateral delayed hearing fluctuation and episodic vertigo. This condition has been called contralateral delayed endolymphatic hydrops. Five of nine ears with profound hearing loss (56 % ) showed an absence of VEMPs. One ear (11 % ) showed decreased responses, and three ears (33 % ) had normal responses. Of the ears with fluctuation of hearing, six (67 % ) showed an absence of responses, and three ears (33 % ) showed normal responses. In four patients we recorded VEMPs before and after oral administration of glycerol. Three hours after glycerol administration, two of four ears with fluctuating hearing loss showed the appearance of VEMPs although there was an absence of VEMPs before glycerol administration. These results suggested that saccular dysfunction could exist not only in the ears with profound hearing loss but also in ears with fluctuating hearing loss and that saccular endolymphatic hydrops could exist in the ears with fluctuating hearing loss. “Contralateral delayed endolymphatic hydrops” might be an appropriate term.