Fig. 1. Treatment outcome, incidence of pDBN, and 1-week follow-up results in patients with PC BPPV. The responders were those patients with resolution of pT-UBN in follow-up tests performed 1 hour after the Epley maneuver. BPPV: benign paroxysmal positional vertigo, PC: posterior canal, pDBN: positional downbeat nystagmus, pT-UBN: positional vertigo and torsional upbeat nystagmus.
