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Liberatory vertigo: a new prognostic factor for repositioning maneuvers
Giancarlo Tirelli1, Francesca Boscolo Nata1, Nicoletta Gardenal1
1Department of Otorhinolaryngology and Head and Neck Surgery, Cattinara Hospital, I-34149 Trieste, Italy.
The American Journal of Emergency Medicine
|June 1, 2016
Summary
Liberatory vertigo, a new concept for treating benign paroxysmal positional vertigo (BPPV), can predict maneuver effectiveness. This finding aids emergency department BPPV treatment, regardless of the affected inner ear canal.
Area of Science:
- Neurology
- Otolaryngology
Background:
- Benign paroxysmal positional vertigo (BPPV) is a common cause of vertigo.
- Effective and rapid treatment is crucial, especially in emergency settings.
Purpose of the Study:
- To introduce the concept of liberatory vertigo as a prognostic factor in BPPV treatment.
- To evaluate the correlation between liberatory vertigo and therapeutic effectiveness.
Main Methods:
- Prospective, nonrandomized study of 535 patients with typical positional vertigo.
- Observation of liberatory vertigo onset during treatment maneuvers.
- Subjective vertigo assessment via questionnaire and statistical analysis.
Main Results:
- Complete recovery rates were 76.5% for posterior canal and 80% for horizontal canal BPPV.
- Liberatory vertigo occurred in 67.9% and 88% of these cases, respectively.
- The positive predictive value of liberatory vertigo for treatment success ranged from 93% to 97%.
Conclusions:
- Liberatory vertigo is a reliable predictor of maneuver effectiveness in BPPV treatment.
- This predictor is independent of the specific semicircular canal involved.
- The concept facilitates emergency department management of BPPV.
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