The efficacy of repositioning maneuver for horizontal semicircular canal benign paroxysmal positional vertigo

Abstract

Objective To investigate the efficacy of repositioning maneuver for horizontal semicircular canal benign paroxysmal positional vertigo (HC-BPPV).Methods Barbecue maneuver was applied in 70 patients with bilateral geotropic nystagmus; Gufoni maneuver,modified Semont maneuver,and forced prolonged position were used in 17 patients with bilateral apogeotropic nystagmus.The efficacies were observed.Results The one-time recovery rate of Barbecue maneuver was 88.6％.5 patients with apogeotropic nystagmus were cured by switching to geotropic type after Gufoni maneuver.Eight patients with apogeotropic nystagmus who never switched to geotropic type became symptom-free after being treated with modified Semont maneuver,one patient who did not response to previous maneuver were cured after use of forced prolonged position,and 3 patients with apogeotropic nystagmus did not response to the therapy.Conclusions Barbecue maneuver is effective in the treatment of HC-BPPV with bilateral geotmpic nystagmus; but it is difficult to treat bilateral apogeotropic nystagmus with this maneuver.The maneuver remains to be further studied. Key words: Vertigo; Horizontal semicircular canal; Repositioning maneuver