Comparing the clinical types of Benign paroxysmal positional vertigo

Abstract

Background: Incidence of BPPV (Benign paroxysmal positional vertigo) is 10.7 to 140 in 100’000 population. In Mongolia, first vestibular laboratory was established in 2006. Since then, we have been successfully diagnosing all three clinical types of BPPV, but there was no study done until now. Objective: Compare the clinical types of BPPV and determine their characteristics. Methods: Cross-sectional study design was used. Total of 162 patients, who were diagnosed with BPPV between Janauary 2019 to January 2021 at EMJJ ENT clinic’s vestibular laboratory, were included in our study. BPPV was diagnosed using clinical questionnaire and videonystagmography (VNG), according to 2017 AAO-HNS (American Academy of Otolaryngology, Head and Neck Surgery) BPPV guideline. Results: From total of 162 patients enrolled in the study, 101 (62.4%) were diagnosed as posterior canal BPPV, 44 (27.1%) as horizontal canal BPPV, and 17 (10.5%) as anterior canal BPPV. Mean age of the patients was 50, male to female ratio was 1:4 (32 male to 130 female). Cause of the BPPV was unknown in 80 (49.4%) patients, 40 (24.7%) patients had history of head trauma. Total of 102 patients had previous hospital visit, and 5.8% of them were referred to our hospital as BPPV. The clinical subtypes of BPPV did not have statistically significant difference between them regarding age, sex of the patients, duration, number of vertigo attack and cause of BPPV. Conclusion: Clinical characteristics of the subtypes of BPPV were similar, no statistically significant difference was noted.