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Long-Term Outcomes of Canalith Repositioning for Benign Paroxysmal
Positional Vertigo: Kaplan-Meier Estimate
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Gu Il Rhim
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Res Vestib Sci. 2016;15(1):17-21.
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Abstract
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- Objective: The objective of this study is to determine the long-term recurrence
rate of benign paroxysmal positional vertigo (BPPV) and the factors associated
to such recurrence.
Methods Retrospective review was performed for 295 patients diagnosed as
idiopathic BPPV. After successful resolution by particle repositioning maneuver,
all patients were followed up by visiting clinic or telephone. A study period was
1?56 months and average follow up period for study population after the initial
treatment was 26 months. The rate of recurrence was estimated according to the
method of Kaplan-Meier and compared by the log-rank test.
Results Overall recurrence rate by Kaplan-Meier estimate was 50% at 30 months.
Kaplan-Meier estimate suggests the effect of patient age, sex and visit of
treatment sessions in initial episode on BPPV recurrence over 3 year follow-up
period. Recurrent rate was significantly higher in patients aged 40 years or older
(p<0.013) and in patients with three or more visit of treatment sessions (p<0.015).
However, there was no significant association between recurrence rate and sex.
Conclusion The long-term recurrence of BPPV was associated with age above
40 years and the number of visit for treatment sessions. This finding suggests
that the recurrence of BPPV may be related with aging process.
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