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Vestibular evoked myogenic potentials in patients with benign paroxysmal positional vertigo involving each
Seok Min Hong1, Dong Choon Park, Seung Geun Yeo
1Department of Otorhinolaryngology and Head and Neck Surgery, College of Medicine, Kyung Hee University, Seoul, South Korea.
Purpose:
We have investigated vestibular evoked myogenic potentials (VEMPs) as a function of age and the involvement of each of the 3 semicircular canals in patients with benign paroxysmal positional vertigo (BPPV).
Materials And Methods:
We performed prospective assessment from January 2005 to September 2006. Vestibular evoked myogenic potential was measured in 53 patients with BPPV and 84 healthy subjects, with the latter subdivided by patient age.
Results:
The subgroup of healthy subjects older than 60 years showed significantly more prolonged p13 and n23 latencies and lower amplitude than the other 2 subgroups. Of the 53 patients with BPPV, 13 (24.5%) showed abnormal VEMP responses on the affected side when compared with their age-related control subgroup. There was no correlation between VEMP findings and the affected semicircular canal.
Conclusion:
Patients with BPPV may show abnormal VEMP findings, irrespective of the involved semicircular canal, and age was associated with VEMP results suggesting degeneration of the maculae of the saccule.
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