Is it important to repeat the positioning maneuver after the treatment for benign paroxysmal positional vertigo?

Abstract

Introduction: Benign paroxysmal positional vertigo (BPPV) is the most common cause of peripheral vestibular dysfunction. Objective: To assess whether the performance of the Dix-Hallpike maneuver after the Epley positioning maneuver has prognostic value in the evolution of unilateral ductolithiasis of posterior semicircular canal. Methods: A prospective cohort study in monitored patients at otoneurology ambulatory with a diagnosis of BPPV; they were submitted to the therapeutic maneuver and then to a retest in order to evaluate the treatment effectiveness; all cases were reassessed one week later and the retest prognostic value was evaluated. Results: A sample of 64 patients which 47 belonging to negative retest group and 17 belonging to positive retest. Performed the maneuver in all patients, the retest presented 51.85% sensitivity, 91.89% specificity, 82.35% positive predictive value and 72.34% negative predictive value. Conclusion: The study shows that doing the retest after repositioning maneuver of particles in BPPV is effectual, since it has high specificity.