[前庭诱发肌源性电位与良性阵发性位置性眩晕]
[Vestibular evoked myogenic potentials and benign paroxysmal positional vertigo].
作者信息
Boleas-Aguirre Marisol, Sánchez-Ferrándiz Noelia, Artieda Julio, Pérez Nicolás
机构信息
Departamento de Otorrinolaringología, Clínica Universitaria de Navarra, Universidad de Navarra, Pamplona Navarra, España.
出版信息
Acta Otorrinolaringol Esp. 2007 May;58(5):173-7.
OBJECTIVE
Benign paroxysmal positional vertigo (BPPV) seems to occur because of otoconia migration into the semicircular canals or their adherence to the cupula. Although the origin of these otoconia lies in the macula of the utricle, vestibular evoked myogenic potentials (VEMPs) can be used assess saccular function. The aim of this study is to assess the saccular function in patients diagnosed with BPPV.
PATIENTS AND METHOD
Nineteen patients diagnosed with BPPV of the posterior semicircular canal were included in this study. Their auditory function and their caloric, rotatory chair, and VEMP responses were tested. Ipsilateral and contralateral VEMP thresholds, ipsilateral and contralateral p13 and n23 latencies at 100 dB, inter-peak amplitude and the interaural amplitude difference were determined.
RESULTS
We found a lack of VEMP response in 52 % of the ears with BPPV. When adjusted for bilateral absence, VEMP response was absent in 20.3 % of ears.
CONCLUSIONS
Some patients with idiopathic BPPV show a degree of saccular dysfunction.
目的
良性阵发性位置性眩晕（BPPV）似乎是由于耳石微粒迁移至半规管或附着于壶腹嵴所致。尽管这些耳石微粒起源于椭圆囊斑，但前庭诱发肌源性电位（VEMP）可用于评估球囊功能。本研究旨在评估被诊断为BPPV的患者的球囊功能。
患者与方法
本研究纳入了19例被诊断为后半规管BPPV的患者。测试了他们的听觉功能以及冷热试验、转椅试验和VEMP反应。测定了同侧和对侧VEMP阈值、100 dB时同侧和对侧p13和n23潜伏期、峰间振幅和双耳振幅差。
结果
我们发现52%的BPPV患耳缺乏VEMP反应。经双侧缺失校正后，20.3%的患耳无VEMP反应。
结论
一些特发性BPPV患者存在一定程度的球囊功能障碍。
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