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Correlation between the head‐lying side during sleep and the affected side by benign paroxysmal positional vertigo involving the posterior or horizontal semicircular canal
Author(s) -
Shim Dae Bo,
Kim Ji Hong,
Park Kye Chun,
Song Mee Hyun,
Park Hong Ju
Publication year - 2012
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1002/lary.23180
Subject(s) - benign paroxysmal positional vertigo , medicine , supine position , posterior semicircular canal , prospective cohort study , semicircular canal , vertigo , lying , audiology , surgery , vestibular system , radiology
Objectives/Hypothesis: The aim of this study was to evaluate the relationship between the head position during sleep and the affected semicircular canal (SCC) in patients with benign paroxysmal positional vertigo (BPPV). Study Design: Prospective study at a tertiary hospital. Methods: We conducted a prospective study in patients with BPPV involving posterior or horizontal SCCs. Of a total of 425 patients diagnosed with BPPV, 83 patients showing signs of simultaneous multiple canal involvement, and those having combined otologic diseases in the same ear were excluded from the study. All patients included in the study were asked to define their preferred head‐lying side at the beginning of sleep among the following choices: supine, lateral (right or left), or no predominant side. Results: Our study included 174 patients with posterior SCC BPPV (p‐BPPV) and 168 patients with horizontal SCC BPPV (h‐BPPV). Patients habitually adopted a lateral head position during sleep in 105 cases of p‐BPPV and 109 cases of h‐BPPV. Statistically significant correlation was demonstrated between the head‐lying side during sleep and the affected side by BPPV ( P < .01) in patients with p‐BPPV as well as h‐BPPV. Conclusions: There is significant correlation between the head‐lying side during sleep and the side affected by BPPV in h‐BPPV and p‐BPPV, which may provide additional clues about the pathophysiology of BPPV. Clinically, this information may be used to provide helpful guidelines for patients with BPPV concerning their sleeping positions to prevent recurrence of BPPV. Laryngoscope, 2012