The Canalith Repositioning Procedure for the Treatment of Benign Paroxysmal Positional Vertigo: A Randomized Controlled Trial

To compare the canalith repositioning procedure (CRP) with a sham maneuver for the treatment of benign paroxysmal positional vertigo. We recruited 50 patients with a history of positional vertigo and unilateral positional nystagmus on physical examination (Dix-Hallpike maneuver). Patients were randomized to either the CRP ( n=24) or a sham maneuver ( n=26). Measured outcomes included resolution of vertigo and positional nystagmus at follow-up examination. The mean duration or toltow-up was l0 days for both groups. Resolution of symptoms was reported by 12 (50%) of the 24 patients in the CRP group and by 5 (19%) of the 26 patients in the sham group ( P=.02). The results of the Dix-Hallpike maneuver were negative for positional nystagmus in 16 (67%) of 24 patients in the CRP group and in 10 (38%) of 26 patients in the sham group ( P=.046). The CRP is effective treatment of benign paroxysmal positional vertigo, and this procedure can be performed by general internists on outpatients with this disorder.