前庭神経炎における自覚的視性垂直位の経時的変化

• 五島 史行

  日野市立病院耳鼻咽喉科 慶應義塾大学医学部耳鼻咽喉科

• 東野 一隆

  国際医療福祉大学付属熱海病院

• 國弘 幸伸

  慶應義塾大学医学部耳鼻咽喉科

• 林 裕次郎

  けいゆう病院

• 斎藤 晶

  埼玉社会保険病院耳鼻咽喉科

• 増田 圭奈子

  独立行政法人国立病院機構東京医療センター

• 神崎 仁

  国際医療福祉大学付属熱海病院

• 小川 郁

  慶應義塾大学医学部耳鼻咽喉科

書誌事項

タイトル別名

• Temporal Changes of Subjective Visual Vertical in Patients with Vestibular Neuritis

抄録

Introduction: During the acute phase, patients with vestibular neuritis suffer from severe vertigo. With time, the intensity of vertigo gradually decreases. The aims of the present study were: (1) to determine whether changes in the subjective visual vertical (SVV) system reflect how patients subjectively experience vertigo, and (2) to determine the relationship between changes in SVV and canal paralysis (CP).<br>Methods: Our subjects comprised 23 patients with vestibular neuritis. We measured the SVV of each patient several times to evaluate the recovery of SVV and CP over time. The intensity of vertigo was graded numerically as follows: (1) 5—very intense (patient cannot stand with eyes open), (2) 4—intense (patient cannot stand with eyes closed), (3) 3—moderate (patient can stand with eyes closed), (4) 2—slight vertigo, and (5) 1—no vertigo. We also evaluated CP in 10 patients using the thermal caloric test.<br>Results: The temporal process of SVV recovery was grouped into three categories: (1) small fluctuation/rapid recovery (N=7); (2) small fluctuation/delayed recovery (N=8); and (3) large fluctuation (N=8). For CP recovery, we observed cases that failed to recover (N=4) and others that did recover (N=6). When tested 30 days and 1 year after the initial examination, the CP recovery group displayed larger SVV fluctuations accompanied by intense subjective vertigo, whereas the group that did not recover exhibited fewer fluctuations accompanied by weak vertigo.<br>Conclusions: SVV represents the subjective perception of the direction of gravity. Fluctuations in SVV, rather than absolute SVV, correlate well with the subjective intensity of vertigo. This suggests that, during the recovery process, fluctuations in SVV, rather than the dysfunction itself, causes dizziness. Measuring SVV is very straightforward and quantifying SVV fluctuations is an effective measure of the intensity of vertigo.

収録刊行物

• Ｅｑｕｉｌｉｂｒｉｕｍ　Ｒｅｓｅａｒｃｈ

  Ｅｑｕｉｌｉｂｒｉｕｍ　Ｒｅｓｅａｒｃｈ 66 (3), 116-122, 2007

  一般社団法人 日本めまい平衡医学会

キーワード

• vertigo
• subjective visual vertical
• vestibular neuritis

詳細情報

• CRID: 1390282679927373952
• NII論文ID: 10021290261
• NII書誌ID: AN00001485
• DOI: 10.3757/jser.66.116
• ISSN: 1882577X
• ISSN: 03855716
• Web Site: https://search.jamas.or.jp/link/ui/2008215828
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可