良性発作性頭位めまい症再発例の検討

DOI Web Site 参考文献13件
  • 藤井 守
    中国電力株式会社中電病院耳鼻咽喉科

書誌事項

タイトル別名
  • Recurrent Cases of Benign Paroxysmal Positional Vertigo
  • リョウセイ ホッサセイトウイメマイ ショウ サイハツレイ ノ ケントウ

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説明

Canalith repositioning procedures (CRPs) are a widely recognized effective method for the treatment of benign paroxysmal positional vertigo (BPPV), however, there still remain recurrent cases after these therapies.<BR>In this series, recurrence rate was 10% (8/80) in posterior type BPPV,14.6% (7/78) in lateral type BPPV. Recurrences were observed three times or more in 4 of the cases of lateral type BPPV. The major parts of recurrent episodes (16/21=76.2 %) occurred in the same side of the same canal. From these findings, it was supposed that the recurrence of BPPV, especially that which occurred in the same canal, was caused by particles which were not only originally attached to the surface of the utricular macula but also were originally attached to the surface of the vestibular dark cells of the canals, and these particles (probably the degenerated otoconia) were affected by the metabolic changes of the canals and had the tendency of releasing from the surface of the dark cells.<BR>For preventing recurrence and for future treatment of non-responders to CRPs, further research must be done to analyze precisely the mineral metabolism of the micro-environment of the canal.

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