文献詳細
文献概要
今月の主題 めまいの生理検査 各論
前庭誘発筋電位検査(VEMP)
著者: 瀬尾徹1
所属機関: 1大阪中央病院耳鼻咽喉科
ページ範囲:P.631 - P.636
文献購入ページに移動前庭誘発筋電位(VEMP)は,強大な音響刺激により胸鎖乳突筋に生じる誘発電位で,潜時13msecおよび23msec前後の2相性の波形からなる.この反応は,球形囊由来と考えられ,球形囊機能検査として応用されてきた.これまで以下のような変法が報告されている.フロセミド負荷VEMP:内リンパ水腫が利尿剤によって軽快することを応用した検査で,内リンパ水腫の推定に用いられる.galvanicVEMP:電気刺激によるVEMPで,球形囊,下前庭神経の障害部位の推定に用いられる.骨導VEMP:骨導刺激を用いたVEMPで,伝音難聴の患者に施行できる.VEMPは,めまいの診断に有用なツールとなりうる.
参考文献
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