title: Relationship between the affected ear in benign paroxysmal positional vertigo and habitual head-lying side during bedrest.
abstract: OBJECTIVE
  To assess the association between the habitual head position during bedrest and the affected ear in benign paroxysmal positional vertigo (BPPV).
  
  
  METHODS
  Prospective trial of patients with active BPPV of the posterior semicircular canal, confirmed on physical examination.
  
  
  METHODS
  Seventy-five patients were asked to explain the head position and lying side they were accustomed to before falling asleep in bed.
  
  
  RESULTS
  Fifty patients (67 per cent) habitually adopted a lateral head position during bedrest. The ear affected by BPPV was found to be consistent with the head-lying side during bedrest in 43 cases (86 per cent) (29 cases for the right ear and 14 cases for the left ear).
  
  
  CONCLUSIONS
  Habitual lateral head-positioning during bedrest can be a major factor leading to the development of BPPV in the ipsilateral ear.
authors.affiliation: 1st Department of Otorhinolaryngology-Head and Neck Surgery, Sisli Etfal Research and Training Hospital, Istanbul, Turkey. burak_cakir@hotmail.com
authors.forename: B O
authors.initials: BO
authors.lastname: Cakir
authors.forename: I
authors.initials: I
authors.lastname: Ercan
authors.forename: Z A
authors.initials: ZA
authors.lastname: Cakir
authors.forename: S
authors.initials: S
authors.lastname: Civelek
authors.forename: S
authors.initials: S
authors.lastname: Turgut
mesh_terms: D000328:Adult; D000368:Aged; D001510:Bed Rest; D004423:Ear / Q000473:pathology; D005260:Female; D006257:Head; D006801:Humans; D008297:Male; D008875:Middle Aged; D011187:Posture; D011446:Prospective Studies; D012665:Semicircular Canals / Q000473:pathology; D014717:Vertigo / Q000209:etiology* / Q000473:pathology