Abstract Details

Title Vestibular Function Tests in Benign Paroxysmal Positional Vertigo: Recurrent Rate and Associated Factors

Topic Neuro-ophthalmology/Neuro-otology

Presentation(s) P02 - (-)

Poster/Presentation
Number 251

Objective

Background BACKGROUND: Since the liberated otoconia from the degenerated utricle has been postulated as the cause of the benign paroxysmal positional vertigo (BPPV), the relationship of the utricular function and the generation of BPPV have been studied. In addition, abnormal bone metabolism and vascular risk factors resulting insufficient circulation to utricle has been reported to be related to the utricular degeneration in BPPV.

Design/Methods DESIGN/METHODS: 84 consecutive patients with BPPV were recruited in dizziness center. Caloric test, cervical and ocular VEMPswere tested in all the patients in acute phase of BPPV. At the same time, vascular risk factors and BMD were performed.Vascular risk factors were history of hypertension, diabetes mellitus, hyperlipidemia and ischemic heart disease. All the data were analyzed for the relationship between abnormal results of vestibular function tests and the risk factors.

Results RESULTS: 58 patients (69%) showed abnormal cervical VEMPsthat were related to decreased bone density, having more than one vascular risk factor, and older age (>55years). Abnormal ocular VEMPs were showed in 53 patients (63%) that were related to older age and vascular risk factors, but not statistically related to bone mineral density. Caloric tests failed to show any statistically significant results. 12 patients(14%) showed recurrent BPPV for one year that 8 patients recured same side and 4 pateints opposite side.

Conclusions CONCLUSIONS: We found abnormal results of cVEMPs and oVEMPs is related to the BMD, vascular risk factors and age. VEMPs could be used for the demonstration of presumptive otolith degeneration in BPPV. We found 14% recurrent rate for one year in BPPV and could't find the relation between recurrence and risk factors of BPPV.

Authors/Disclosures
Ji-Yun Park (Presbyterian Medical Center) PRESENTER	No disclosure on file
Roger M. Lane, MD, MPH (Ionis Pharmaceuticals)	No disclosure on file

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