摘要
目的通过分析脑干梗死患者眼前庭诱发肌源性电位（oVEMP）的电生理特点，并与脑干听觉诱发电位（BAEP）进行对比研究，探讨oVEMP对脑干梗死患者的临床应用价值。方法对60例脑干梗死患者（纳入脑干梗死组）分别进行oVEMP和BAEP检测，并将其结果与60例健康志愿者（纳入正常对照组）数据进行对照。结果正常对照组60例健康志愿者中有2例未引出oVEMP，其余58例健康志愿者均引出可辨析、稳定的N1-P1波形，引出率为96．7％。脑干梗死组共有42例患者引出oVEMP，其双侧N1、P1峰潜伏期均较正常对照组显著延长（P〈0．05），双侧N1-P1波幅均较正常对照组明显降低（P〈0．05）；有18例患者未引出oVEMP，其中N1波峰潜伏期延长13例，P1峰潜伏期延长10例，同时出现N1、P1峰潜伏期延长6例，N1-P1波幅降低8例，共计oVEMP异常45例，异常率为75％。脑干梗死组BAEP的Ⅴ波潜伏期[（5．98±0．37）ms]及Ⅲ～Ⅴ波、Ⅰ～Ⅴ波峰间潜伏期[分别为（2．93±0．34）ms和（4．96±0．39）ms]均较正常对照组显著延长，Ⅴ／Ⅰ波幅比值（0．48±0．10）较正常对照组显著降低（P〈0．05）；其中Ⅴ波潜伏期延长17例，Ⅲ波潜伏期延长6例，Ⅲ～Ⅴ波峰间潜伏期延长15例，Ⅰ～Ⅴ波峰间潜伏期延长9例，11例Ⅲ-Ⅴ／Ⅰ-Ⅲ峰间潜伏期比值〉1，13例Ⅴ／Ⅰ波幅比值〈0．5，3例波形分化不良，共计BAEP异常42例，其异常率为70％。oVEMP异常率与BAEP异常率间差异无统计学意义（P〉0．05）。联用oVEMP与BAEP的检测异常率为91．7％，明显高于BAEP异常率（P〈0．05）。结论oVEMP是检测脑干梗死的可靠电生理方法，与BAEP联用能进一步提高脑干梗死患者的病灶检出率。
Objective To explore the value of ocular vestibular evoked myogenic potential in treating brainstem infarctions through comparing the characteristics ocular vestibular evoked myogenic potential （oVEMP） and brainstem auditory evoked potential （BAEP） in patients with brainstem infarctions. Methods A total of 60 patients with brainstem infarctions were enrolled in a brainstem infarction （BI） group, while another sixty healthy volunteers were selected as the control group. All patients underwent oVEMP and BAEP tests via air-conducted stimuli. Results The oVEMPs were elicited reliably and stably in 58 of the control group, and 42 of the BI group, with the bilateral N1 and P1 lateneies of oVEMP significantly prolonged [ N1 （left） ： 11.85 ±0.82 ms, N1 （right） ： 11.91 ±0.86 ms, P1 （left） ： 15.52 ± 1.61 ms, P1 （right） ： 15, 63 ± 1.64 ms respectively] and the bilateral N1-P1 amplitudes of oVEMP significantly reduced [ 1.23 ± 0.42 μV （left） and 1.58 ± 0.70 μV （right） respectively]. Moreover, no recordable oVEMPs was elicited in the other 18 patients, among which found 13 prolonged N1 latencies, 10 prolonged Pl latencies, 6 prolonged N1 and P1 lateneies and 8 reduced N1-P1 amplitudes of oVEMP. Altogether, 45 abnormal oVEMPs were found, with an abnormal rate of 75%. The average peak latencies of V waves [ （5.98 ± 0.37） ms] and interpeak latencies of Ⅲ- Ⅴ and Ⅰ-Ⅴ waves [ 2.93 ± 0.34 ms and 4.96 ± 0. 39 ms respectively] in the BI group were significantly prolonged compared to the controls （P 〈 0.01 ）. The amplitude ratio of Ⅴ/Ⅰ （0.48 ± 0.10） in the BI group was significantly reduced compared to the controls （P 〈 0.05 ）. Forty-two abnormal BAEPs were found, with an abnormal rate of 75% , including 17 prolonged latency of Ⅴ waves, 6 prolonged latency of Ⅲ waves, 15 prolonged interpeak latencies ofⅢ- Ⅴ waves, 9 prolonged interpeak latencies of Ⅰ-Ⅴ waves, 11 cases of Ⅲ- Ⅴinterpeak latency larger than Ⅰ-Ⅲ interpeak latencies,
出处
《中华物理医学与康复杂志》
CAS
CSCD
北大核心
2015年第10期765-769,共5页
Chinese Journal of Physical Medicine and Rehabilitation
关键词
脑干梗死
眼前庭诱发肌源性电位
脑干听觉诱发电位
Brainstem infarction
Ocular vestibular evoked myogenic potential
Brainstem auditory evoked potential
