[The hearing and vestibular evoked myogenic potentials test in patients with primary benign paroxysmal positional vertigo]

Zhiwei Xu, Peng Zhao, Xu Yang, Xingjian Liu, Xianbing Chen, Suzhen Zhang, Ziming Wu
Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery 2015, 29 (1): 20-3

OBJECTIVE: To investigate the result of vestibular evoked myogenic potentials (VEMP) of primary benign paroxysmal positional vertigo(BPPV)and to identify the characteristics in VEMP examination of the primary BPPV and to observe the relevance of patients with primary BPPV and abnormal VEMP with hearing loss.

METHOD: Patients with primary BPPV were tested with pure tone audiometry, videonystagmograph and VEMPs test. We analyzed the difference in the two groups with normal hearing and hearing loss, discussed the etiology and pathogenesis.

RESULT: Primary BPPV comprised 23.0% with hearing lost, 77.0% hearing normal. The results of oVEMP were abnormal in 79. 7% (59/74) of the cases; and the results of cVEMP were abnormal in 66. 2% (49/74) of the cases; oVEMP and cVEMP differences to the diagnosis of primary BPPV (P<0. 05); oVEMP and cVEMP differences to the diagnosis primary BPPV with hearing lost (P<0. 05).

CONCLUSION: oVEMP detection positive rate of primary BPPV is higher than cVEMP,which may be due to otolithic particles falling from the utricle; positive rate of cVEMP in primary BPPV with hearing loss is higher than that of oVEMP, which may related to the cochlear and sacculus occured in the same embryonic tissue structure.

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