title: Modified particle repositioning procedure.
abstract: OBJECTIVE
  To evaluate the efficacy of modifications to traditional particle repositioning maneuvers in the treatment of benign paroxysmal positional vertigo.
  
  
  METHODS
  Prospective trial of 118 patients with cupolocanalithiasis of the posterior canal treated with three different canal-repositioning techniques.
  
  
  METHODS
  Results were compared with the maneuvers employed and the statistical importance of rotating patients by 360 degrees along their longitudinal axis and head shaking on reaching each single position were evaluated.
  
  
  RESULTS
  Treatment of patients with our maneuver, which, in comparison with traditional repositioning maneuvers, was modified by breaking the procedure up into seven positions and rotating patients by 360 degrees along their longitudinal axis, gives a higher, but not statistically significant, number of treatment successes (84.5%) than the traditional Parnes maneuver (60%) (P = .154); treatment of a third group of patients with our modified particle repositioning maneuver with the addition of head-shaking on reaching each single position gives a higher (95.6%), statistically significant number of treatment successes than traditional Parnes maneuver (P = .00011).
  
  
  CONCLUSIONS
  The success rates achieved from modified particle repositioning maneuvers are statistically significant. Onset or persistence of dizziness, which patients frequently complain of after liberatory maneuvers, affects only 5.6% of the patients treated. This low incidence is statistically correlated to head-shaking.
authors.affiliation: ENT Department, Hospital of Cattinara, University of Trieste, Italy. orlts@fmc.univ.trieste.it
authors.forename: G
authors.initials: G
authors.lastname: Tirelli
authors.forename: E
authors.initials: E
authors.lastname: D'Orlando
authors.forename: O
authors.initials: O
authors.lastname: Zarcone
authors.forename: V
authors.initials: V
authors.lastname: Giacomarra
authors.forename: M
authors.initials: M
authors.lastname: Russolo
mesh_terms: D002137:Calculi / Q000473:pathology; D016009:Chi-Square Distribution; D004244:Dizziness / Q000628:therapy; D006257:Head / Q000033:anatomy & histology; D019416:Head Movements / Q000502:physiology; D006801:Humans; D007759:Labyrinth Diseases / Q000473:pathology; D009760:Nystagmus, Physiologic / Q000502:physiology; D011187:Posture / Q000502:physiology; D016684:Prone Position / Q000502:physiology; D012665:Semicircular Canals / Q000473:pathology; D016683:Supine Position / Q000502:physiology; D014717:Vertigo / Q000473:pathology / Q000628:therapy*