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Updated: Feb 7, 2026

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鼓膜内挿入式鼓膜電極を用いた電気鼓音図検査:めまい診断のための年齢別基準値
Tom Gawliczek1, Miranda Claire Morrison2, Katharine Keller2
1Department of Otorhinolaryngology, Head and Neck Surgery, lnselspital, Bern University Hospital, University of Bern, Bern, Schweiz. tom.gawliczek@sitem-insel.ch.
HNO
|February 5, 2026
まとめ
本研究では、メニエール病の診断を支援するために、鼓膜外挿入式電気鼓音図(ECochG)の年齢層別基準範囲を確立する。これらの新しい値は、臨床現場における聴覚合計電位(SP)/活動電位(AP)比の解釈を改善する。
科学分野:
- 耳鼻咽喉科
- 神経科学
- 医療診断
背景:
- 電気鼓音図(ECochG)は、メニエール病などの内耳疾患の診断に不可欠である。
- 現在の鼓膜外挿入式ECochGには年齢別の基準値がなく、正確な臨床解釈を妨げている。
- これらの値の確立は、正確な診断評価に不可欠である。
研究 の 目的:
- 聴覚合計電位(SP)/活動電位(AP)振幅比および面積比の年齢層別基準範囲を決定する。
- 内リンパ水腫が疑われる患者における非侵襲的ECochGの基準データを提示する。
- 鼓膜外挿入式ECochGの診断的有用性を高める。
主な方法:
- 健常ボランティア26名(20〜70歳)から47耳を対象とした。
- ECochG記録には、鼓膜内挿入式鼓膜電極を使用した。
- SPおよびAP電位を測定し、振幅/面積比を算出し、年齢および側別に分析した。
主要な成果:
- 基準範囲(P5-P95)を確立した(SP/AP振幅比(0.13-0.46)およびSP/AP面積比(0.72-1.72))。
- 左右耳間で有意差は認められなかった。
- 両比率において、臨床的に無視できる程度の年齢関連の上昇が観察された。
結論:
- 鼓膜外挿入式ECochGは、年齢層別値を有する信頼性の高い低侵襲診断法を提供する。
- これらの基準値は、内耳機能障害のより詳細な評価を容易にする。
- ECochGは、メニエール病診断における画像検査の有用な補助となる。
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