Clinical analysis on canal conversion of otolith in the treatment of geotropic nystagmus horizontal semicircular canal benign proxysmal positional vertigo by Barbecue maneuver

Abstract

Objective To explore the correct diagnosis and treatment of canal conversion of otolith in the treatment of geotropic nystagmus horizontal semicircular canal benign paroxysmal positional vertigo (BPPV) by Barbecue maneuver. Methods and Results There were 66 patients with geotropic nystagmus horizontal semicircular canal BPPV treated by Barbecue maneuver from January to December 2010 in Guangdong General Hospital. Among 66 cases, 6 cases (9.09%) were transformed to posterior semicircular canal BPPV and 10 cases (15.15% ) were transformed to apogeotropic nystagmus. Among 50 cases (75.76%) who did not show transition, 3 cases (4.55%) were found relapsed on the 30th day of follow-up. The total effective rate was 95.45% (63/66). No one suffered from severe adverse events. Conclusions During the maneuver treatment of geotropic nystagmus horizontal semicircular canal BPPV, canal conversion of otolith could happen. Therefore, characteristics of nystagmus should be concerned, and exact diagnosis and repeated maneuver treatment is the key to success.

DOI: 10.3969/j.issn.1672-6731.2019.02.004