Improving Vestibular Evoked Myogenic Potential Reliability by using a Blood Pressure Manometer

Vanspauwen, Robby; Wuyts, Floris L.; Heyning, Paul Van de

doi:10.1097/01.mlg.0000187405.57567.ae

Cited by 48 publications

(46 citation statements)

References 7 publications

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“…The first method is the monitoring of the pre-stimulus contraction level of the SCM, so the system runs a correction algorithm capable of calculating corrected amplitudes or it does not accept the myogenic responses if level of contraction is out of a pre-defined range [14,19]; the second is the use of a visual feedback system as a blood pressure manometer [16,19] or a visual display to maintain a steady contraction during the test. In our experiments, we have used both methods to monitor the level of tonic contraction in the SCM between different trials.…”

Section: Reliability Of Vempsmentioning

confidence: 99%

Short tone bursts are better than clicks for cervical vestibular-evoked myogenic potentials in clinical practice

Viciana

Lopez-Escamez

2012

Eur Arch Otorhinolaryngol

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Our aim is to compare short tone burst (STB)--and clicks--stimuli to evoke vestibular-evoked myogenic potentials (VEMPs) in healthy controls. A cross-sectional study in which VEMPs were measured in two sets of 185 and 55 normal volunteers by an air-conducted 500 Hz STBs and clicks, respectively. The test-retest reliability between different sessions was assessed in two subsets of 35 individuals. Moreover, 53 individuals were examined with both stimuli within the same session. Intraclass correlation coefficients (ICC) were used to assess reliability for P1 and N1 latencies, corrected amplitude and asymmetry ratio (AR). The results included that STBs produced a reliable response between different sessions (N = 35; [ICC] = 0.61-0.94, all p < 0.0001). Although clicks produced a reliable response for P1 and N1 latencies and corrected amplitudes (ICC = 0.62-0.74, all p < 0.0001), the amplitude ratio showed a lower reliability [ICC = 0.32 (-0.10 to 0.59)]. The amplitude of VEMP was consistently larger with 500 Hz STBs than clicks for a given sound pressure level. Within the same session, STBs evoked a response in 52/53 subjects (98%) whereas clicks evoked VEMPs only in 44/53 individuals (83%). Conclusions revealed that a 500 Hz STBs elicited consistently larger amplitudes, better reliability across recording sessions and fewer missing responses compared with click-induced VEMPs.

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Section: Reliability Of Vempsmentioning

confidence: 99%

Short tone bursts are better than clicks for cervical vestibular-evoked myogenic potentials in clinical practice

Viciana

Lopez-Escamez

2012

Eur Arch Otorhinolaryngol

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“…This resulted in a much smaller variation and range of the measured EMG level than reported in previous studies [e.g., Murofushi and Kaga, 2009;Vanspauwen et al, 2006Vanspauwen et al, , 2009. However, despite applying a feedback algorithm, mean EMG levels differed between the methods.…”

Section: Emg Levelmentioning

confidence: 43%

“…This method is less often used than the previous two [Burkard et al, 2007;Vanspauwen et al, 2009]. Other methods like pressing the forehead against a bar or having patients hold a rubber ball between the chin and the manubrium are of less clinical relevance [Vanspauwen et al, 2006].…”

Section: Introductionmentioning

confidence: 98%

Neurofeedback-Controlled Comparison of the Head Elevation versus Head Rotation and Head-Hand Methods in Eliciting Cervical Vestibular Evoked Myogenic Potentials

Rahne

Weiser

Plontke³

2014

Audiol Neurotol

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A constant tension of the sternocleidomastoid muscles is a prerequisite to a reliable recording of cervical vestibular evoked myogenic potentials (cVEMP). Therefore, the head elevation method, the head rotation method, and the head-hand method are used in clinical practice. So far, no method has been shown to achieve the best stability and validity of the cVEMP responses. We performed a prospective study to compare the cVEMP responses in a within-subject design. With 40 healthy subjects, cVEMP amplitudes, latencies, asymmetry ratios and thresholds were measured. The muscle tension was kept constant by using acoustic feedback. The individual subjective comfort and preference of a method were evaluated by a questionnaire. The cVEMP threshold and asymmetry ratios were lowest with the head rotation method. This method was also rated as the most comfortable and thus preferred one. The cVEMP latencies were not different between the methods. Our results show that the head rotation method appears to be superior to the compared head elevation and head-hand methods.

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“…Vanspawen et al [49] evaluated the use only of a blood pressure manometer with an inXatable cuV as feedback method to control muscle contraction, when no EMG equipment is available. This method is based on the principle that a contraction of the SCM is necessary to squeeze the cuV between hand and jaw.…”

Section: Monitoring Of Scm Contractionmentioning

confidence: 99%

Vestibular-evoked myogenic potentials eliciting: an overview

Eleftheriadou

Koudounarakis

2010

Eur Arch Otorhinolaryngol

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Recently, the favoured approach for unilateral testing of saccular function is the recently developed method of vestibular-evoked myogenic potentials (VEMPs). VEMP testing is a reliable technique, since it selectively stimulates and investigates each lateral canal in isolation from the other, providing information for the assessment of otolith function and inferior vestibular nerve integrity. The aim of this study was to provide a current review of the different methods used to record VEMPs. We noticed discrepancies in relation to the ways used to record the VEMPs in relation to the following factors: types of stimuli used (clicks or tone bursts) and body muscles tested, patient position at the time of recording, response, type of phone used and way of stimulus presentation (mono or binaural, ipsi or contralateral) and others. As a conclusion, despite the numerous studies in the field, there is no consensus in the literature as to the best recording method for VEMPs. However, the new ocular VEMPs in response to bone conducted vibration seem to be of clinical importance for the evaluation of utricular function. Further research is needed to support its clinical usefulness.

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Improving Vestibular Evoked Myogenic Potential Reliability by using a Blood Pressure Manometer

Abstract: This feedback method improves significantly the VEMP amplitude reliability.

Cited by 48 publications

References 7 publications

Short tone bursts are better than clicks for cervical vestibular-evoked myogenic potentials in clinical practice

Short tone bursts are better than clicks for cervical vestibular-evoked myogenic potentials in clinical practice

Neurofeedback-Controlled Comparison of the Head Elevation versus Head Rotation and Head-Hand Methods in Eliciting Cervical Vestibular Evoked Myogenic Potentials

Vestibular-evoked myogenic potentials eliciting: an overview

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