Which factors may indicate repeated need for canalith repositioning (CRP) during treatment of benign paroxysmal positional vertigo (BPPV)?

Updated: Mar 13, 2020
  • Author: John C Li, MD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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A retrospective study by Yoon et al of 1900 patients indicated that the following risk factors increase the chance that a patient with BPPV will need multiple CRPs: longer pretreatment duration of vertigo, involvement of bilateral or multiple canals, and age over 50 years. [10]

A study by Power et al found that 91% of cases of posterior canal BPPV were successfully managed with two canalith repositioning maneuvers or less, while 88% of cases of horizontal canal BPPV were effectively treated with two such maneuvers. A higher number of treatments were required for bilateral posterior canal and multiple canal BPPV, as well as for patients who experienced canal conversion. [11]

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