Diagnostic Value of Prolonged Latencies in the Vestibular Evoked Myogenic Potential

Murofushi, Toshihisa; Shimizu, Ken; Takegoshi, Hideki; Cheng, Po‐Wen

doi:10.1001/archotol.127.9.1069

Cited by 255 publications

(194 citation statements)

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“…The latencies of peaks p13 and n23, and peak-to-peak amplitude p13-n23 were measured for evaluation. Accordingly, delayed VEMP indicates the mean latency of p13 exceeding the level (mean + 2SD), suggesting lesion in the retrolabyrinth, especially in the vestibulo-spinal tract [10].…”

Section: Discussionmentioning

confidence: 99%

Vestibular evoked myogenic potentials: optimal stimulation and clinical application

Young

2006

J Biomed Sci

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SummaryBy easily stimulating the ear with loud sound and recording on tonically contracted neck muscles, vestibular evoked myogenic potential (VEMP) test can reflect inner ear function other than the cochlea and semicircular canal. This expands the test battery for clinicians to explore saccular disease, adding a potential usefulness to the sacculo-collic reflex. The ideal stimulation mode for VEMPs is as follows: 95 dB tone bursts, frequency 500 Hz, stimulation repetition rate 5 Hz, rise/fall time 1 ms, plateau 2 ms, binaural stimulation with bilateral recordings. Animal model using guinea pigs has been established, which sets the stage for useful future studies investigating VEMPs in guinea pigs that would appear to resemble human VEMP responses. Clinically, VEMP test has been widely used in central and peripheral vestibular disorders.

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Section: Discussionmentioning

confidence: 99%

Vestibular evoked myogenic potentials: optimal stimulation and clinical application

Young

2006

J Biomed Sci

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“…Even if its structure is yet to be completely understood, given the little time since the scientific world has gotten an interest in this topic, the analysis of this reflex has brought about growing support to the diagnosis of severe pathologic conditions, such as tumors in the acoustic nerve (vestibular neuritis), Meniere's disease, multiple sclerosis and sensorineural hearing loss [41][42][43][44][45] .…”

Section: Discussionmentioning

confidence: 99%

Potenciais miogênicos evocados vestibulares: metodologias de registro em homens e cobaias

Oliveira

David

Colafêmina

2008

Rev. Bras. Otorrinolaringol.

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The vestibular evoked myogenic potential (VEMP) is a clinical test that assess the vestibular function by means of an inhibitory vestibulo-neck reflex, recorded in body muscles in response to high intensity acoustic stimuli. Aim: To check and analyze the different methods used to record VEMPs in humans and in guinea pigs. Materials and Methods: We researched the following databases: MEDLINE, LILACS, SCIELO and COCHRANE. Results: we noticed discrepancies in relation to the ways used to record the vestibular evoked myogenic potentials in relation to the following factors: patient position at the time of recording, type of sound stimulus used (clicks or tone bursts), parameters for stimuli mediation (intensity, frequency, duration of presentation, filters, response amplification gain and windows for stimulus recording), type of phone used and way of stimulus presentation (mono or binaural, ipsi or contralateral). Conclusion: There is no consensus in the literature as to the best recording method for vestibular evoked myogenic potentials. We need more specific studies in order to compare these recordings and establish a standard model to use it in the clinical practice.

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“…En los pacientes en los que se obtuvieron respuestas en los dos oídos, no hubo diferencias en la latencia de la respuesta entre el oído afecto y el normal. Este fenó-meno descarta la existencia de alguna lesión adicional en las vías vestibulares centrales 18 .…”

Section: Discussionunclassified

Resultados de los potenciales evocados miogénicos vestibulares en el vértigo posicional paroxístico benigno

Boleas-Aguirre

Sánchez-Ferrándiz²,

Artieda

et al. 2007

Acta Otorrinolaringológica Española

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Objetivo: El vértigo posicional paroxístico benigno (VPPB) parece deberse a la migración de otoconias dentro de los conductos semicirculares o su adherencia a la cúpula. Si bien el origen de estas otoconias es la mácula del utrículo, aprovechando que los potenciales evocados miogénicos vestibulares (VEMP) valoran la función del sáculo, nuestro objetivo es estudiar su función en pacientes con VPPB. Pacientes y método: En 19 pacientes con VPPB por afección del conducto semicircular posterior, se valoró el nivel de audición, la respuesta de las pruebas calórica, rotatoria y VEMP. Se determinó en los VEMP ipsolaterales y contralaterales los umbrales, las latencias de las ondas p13 y n23 a 100 dB, la amplitud entre máximos y la diferencia de la amplitud interaural. Resultados: Se halló ausencia de respuesta de los VEMP en el 52 % de los oídos con VPPB. Cuando se corrigió por la ausencia de respuesta bilateral, los VEMP estaban ausentes en el 20,3 % de los casos. Conclusiones: En algunos pacientes con VPPB hay cierto grado de disfunción sacular.Palabras clave: VEMP. Vértigo posicional paroxístico benigno. Sáculo. Vestibular Evoked Myogenic Potentials and Benign Paroxysmal Positional VertigoObjective: 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.Key words: VEMPs. Benign paroxysmal positional vertigo. Saccule. INTRODUCCIÓNEl vértigo posicional paroxístico benigno (VPPB) es una afección frecuente del oído interno y, de acuerdo con las hipótesis actuales, aparece como consecuencia de la migración de las otoconias en los conductos semicirculares o su adherencia a la cúpula de éstos. Las otoconias son depósi-tos cristalinos inorgánicos embebidos en la superficie de las membranas otolíticas del utrículo y el sáculo 1 . Cuando se desplazan de esta localización y flotan libremente en el interior de los conductos semicirculares o se adhieren a su cú-pula, estimulan los órganos terminales sensibles a los movimientos. Esto ocasiona vértigo y nistagmo cuando se adoptan las posiciones que desencadenan el cuadro. De todas maneras, no se ha identificado es...

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Diagnostic Value of Prolonged Latencies in the Vestibular Evoked Myogenic Potential

Abstract: Prolonged latencies of the VEMP suggest lesions in the retrolabyrinthine, especially in the vestibulospinal tract.

Cited by 255 publications

References 10 publications

Vestibular evoked myogenic potentials: optimal stimulation and clinical application

Vestibular evoked myogenic potentials: optimal stimulation and clinical application

Potenciais miogênicos evocados vestibulares: metodologias de registro em homens e cobaias

Resultados de los potenciales evocados miogénicos vestibulares en el vértigo posicional paroxístico benigno

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