Effect of Temporal Bone Fracture on the Prognosis of Benign Paroxysmal Positional Vertigo

Abstract

Background and Objectives This study aimed to investigate whether benign paroxysmal positional vertigo (BPPV) accompanied by temporal bone fracture would be more resistant to canalith repositioning procedures (CRPs) than idiopathic BPPV.Subjects and Method Seventy-eight patients with BPPV were included in this study. Among them, 13 patients had temporal bone fractures and 65 had no temporal bone fractures. To identify the factors related to the number of CRPs performed until the remission of BPPV, sex, age, the presence of temporal bone fracture, hypertension, diabetes, dyslipidemia or osteopenia, BPPV affected side, and the type of affected semicircular canal were analyzed using the univariable regression analysis. Thereafter, the multivariable regression analysis was performed using only the variables that had a <i>p</i>-value of 0.2 or less in the univariable analysis.Results In the univariable analysis, temporal bone fracture, diabetes mellitus, and BPPV side showed relatively significant association with the number of CRPs (<i>p</i><0.2). In the multivariable analysis, only temporal bone fracture showed a significant association with the number of CRPs (<i>p</i>=0.043, β=0.532, 95% CI: 0.017-1.046).Conclusion The major finding of this study is that BPPV, accompanied by temporal bone fracture, precipitated more resistance to CRPs than idiopathic BPPV did. Thus, patients with temporal bone fracture might need more intensive examination and treatment for BPPV than those without temporal bone fracture.