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首页> 外文期刊>The Laryngoscope: A Medical Journal for Clinical and Research Contributions in Otolaryngology, Head and Neck Medicine and Surgery, Facial Plastic and Reconstructive Surgery .. >Vestibular evoked myogenic potentials in young children: test parameters and normative data.
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Vestibular evoked myogenic potentials in young children: test parameters and normative data.

机译：幼儿前庭诱发的肌源性潜力：测试参数和规范数据。

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OBJECTIVE: The vestibular evoked myogenic potential (VEMP) is a test of the vestibulocollic reflex that has been extensively studied in adults. Much is known about the normal values in adults as well as their changes with age. In children, the expected test values and their possible changes in development have not yet been described nor has the feasibility of reliable testing in this group. The aim of this prospective study is to accumulate normative data and to verify the viability of testing in young children. The study focused on optimal test parameters, reproducibility, and subject compliance in a pediatric population. METHODS: Thirty normal-hearing children (60 ears) ages 3 to 11 completed VEMP testing and audiograms for analysis. VEMP testing was performed with alternating clicks at three intensities (80-, 85-, and 90-dB normalized hearing level) using averaged, unrectified electromyograms recorded by surface electrode on the sternocleidomastoid muscle ipsilateral to the stimulus. VEMP latencies,amplitude, compliance, and length of testing were recorded for each patient, as well as their feedback on the testing session. The subjects were divided into four age groups for analysis. RESULTS: All but one of the subjects attempting VEMP testing was able to finish. Of 30 children completing VEMP tests, bilateral reflexes were recorded for all subjects with symmetric responses in 28 of 30 subjects (93%). The mean peak latencies (+/- standard deviation [SD]) of pI and nII were 11.3 msec (1.3 ms) and 17.6 msec (1.4 ms), respectively. The mean pI-nII amplitude (+/- SD) was 122 muV (68 muV). There was a significantly shorter nII mean peak latency of group I (ages 3-5) left ear in comparison to other groups, with an absolute shorter mean latency nII in the right ear of group I (not significant). Average test time was 15 minutes with two researchers testing, and subjects were highly compliant. CONCLUSIONS: VEMP is a well-tolerated test for screening vestibular function in young children, performed with minimal test time and reproducible results. Mean latencies in this study suggested a shorter initial negative peak (nII) than in adult studies, consistent with prolongation seen in previous research on the effects of age. Ninety-decibel normalized hearing level clicks were adequate for uniform response rates. Expected latency and amplitude values in single-channel VEMP-unrectified electromyograms were established. This is the first study describing expected latencies and optimal testing parameters in children.
机译：目的：前庭诱发的肌源性电位（VEMP）是对成年人前庭结肠反射的一项测试。关于成人的正常值及其随年龄的变化，人们已经知道很多。在儿童中，尚未描述预期的测试值及其可能的发展变化，也未对此组进行可靠测试的可行性。这项前瞻性研究的目的是收集规范性数据并验证在幼儿中进行测试的可行性。该研究的重点是儿科人群的最佳测试参数，可重复性和受试者依从性。方法：30名3至11岁的正常听力儿童（60耳）完成了VEMP测试和听力图分析。 VEMP测试是在三个强度（80、85和90 dB标准化听觉水平）上交替单击，使用由表面电极在刺激的同侧胸锁乳突肌上记录的平均未矫正肌电图进行的。记录每位患者的VEMP潜伏期，幅度，顺应性和测试时间，以及他们在测试过程中的反馈。将受试者分为四个年龄段进行分析。结果：除一名尝试进行VEMP测试的受试者外，其余所有受试者均能够完成。在完成VEMP测试的30名儿童中，有30名受试者中的28名（93％）记录了所有具有对称反应的受试者的双侧反射。 pI和nII的平均峰值延迟（+/-标准偏差[SD]）分别为11.3毫秒（1.3毫秒）和17.6毫秒（1.4毫秒）。 pI-nII平均幅度（+/- SD）为122μV（68μV）。与其他组相比，第I组（3-5岁）的左耳nII平均峰值潜伏期明显短，而第I组右耳的nII平均潜伏期nII绝对短（不显着）。在两名研究人员进行测试的情况下，平均测试时间为15分钟，并且受试者高度合规。结论：VEMP是筛查幼儿前庭功能的耐受性良好的方法，其检测时间极短，结果可重复。本研究中的平均潜伏期表明，初始阴性峰（nII）比成人研究中的要短，这与先前关于年龄影响的研究中发现的延长一致。九十分贝的标准化听力水平点击足以满足统一的响应率。建立了单通道VEMP未校正肌电图的预期潜伏期和振幅值。这是第一项描述预期的儿童潜伏期和最佳测试参数的研究。

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