Short-term efficacy of Epley's manoeuver for benign paroxysmal positional vertigo: a randomised double-blind placebo-controlled trial

Introduction: Benign paroxysmal positional vertigo of the posterior canal (PC-BPPV) can be effectively treated with Epley's maneuver (EM). However, the magnitude of its effect has been questioned as PC-BPPV may resolve spontaneously. So far, none of the many trials on the efficacy of EM has measured short-term efficacy as required for evaluating treatment of a spontaneously resolving disorder. Methods: Sixty seven patients with acute unilateral BPPV of the posterior canal confirmed by Dix-Hallpike testing were randomly assigned to treatment with Epley's maneuver (n=36) or a sham procedure consisting of an EM for…