Long-term vestibular evoked myogenic potential responses in children with cochlear implant

AbstractObjective:This study aimed to define the characteristics and use of ocular and cervical vestibular evoked myogenic potentials for evaluating paediatric cochlear implant candidates.Methods:Ocular and cervical vestibular evoked myogenic potentials of 34 paediatric cochlear implant candidates were analysed. All patients also underwent a routine audiological examination, including computed tomography.Results:In all, 27 patients with normal inner-ear structures had absent or impaired vestibular evoked myogenic potential responses. In paediatric candidates with inner-ear malformations, ocular and cervical vestibular evoked myogenic potentials had lower thresholds and higher amplitudes. Vestibular evoked myogenic potential responses in this cohort were classified into three groups. There was significant concordance between vestibular evoked myogenic potentials and temporal bone computed tomography findings.Conclusion:Ocular and cervical vestibular evoked myogenic potential waveforms were different in paediatric candidates with normal and abnormal inner-ear structures. Therefore, vestibular evoked myogenic potential responses can indicate temporal bone structure.

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Do Vestibular-Evoked Myogenic Potential Abnormalities in Patients with Cochlear Implant Only Reflect Saccular Dysfunction?

The Journal of International Advanced Otology ◽

10.5152/iao.2016.2522 ◽

2016 ◽

Vol 12 (2) ◽

pp. 166-169 ◽

Cited By ~ 4

Author(s):

Hasan Demirhan ◽

Muhammet Yildiz ◽

Ozgur Yigit

Keyword(s):

Cochlear Implant ◽

Vestibular Evoked Myogenic Potential ◽

Myogenic Potential

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Diagnostic capabilities of the vestibular evoked myogenic potential test in children with vestibular dysfunction

International Journal of Otorhinolaryngology and Head and Neck Surgery ◽

10.18203/issn.2454-5929.ijohns20201275 ◽

2020 ◽

Vol 6 (4) ◽

pp. 606 ◽

Cited By ~ 1

Author(s):

Kalina I. Madzharova ◽

Ana P. Beshkova

Keyword(s):

Vestibular Dysfunction ◽

Otolith Organs ◽

Vestibular Evoked Myogenic Potential ◽

Additional Method ◽

Analysis And Evaluation ◽

Myogenic Potential ◽

Ocular Vemp ◽

Cervical Vemp ◽

Diagnostic Capabilities

Background: Vestibular evoked myogenic potential (VEMP) testing is used in the diagnosis of vestibular disorders. It is an objective method for testing the the otolith organs of the vestibular system. VEMP test is an additional method for diagnosing vestibular neuritis (VN). The combination of cervical VEMP (cVEMP) and ocular VEMP (oVEMP) testing has an advantage in long-term monitoring of patients with VN. The VEMP test is well-studied for adults but studies involving children are insufficient. The aim of this study was to analysis and evaluation of the results from VEMP testing of children diagnosed with vestibular dysfunction. Analysis and evaluation of the results from VEMP testing of children diagnosed with vestibular dysfunction.Methods: History, examination of ENT organs, tone threshold audiometry, tympanometry, otoneurological examination, VEMP test. Results: Children with vestibular dysfunction who were examined showed changes predominantly in the oVEMP test. The upper branch of the vestibular nerve is affected. Conclusions: The VEMP test is an additional method for diagnosing patients with vestibular dysfunction. It is safe when used for children.

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Effect of Video Games on the Otolithic Reflex System

Audiology and Neurotology ◽

10.1159/000516252 ◽

2021 ◽

pp. 1-8

Author(s):

Chih-Ching Wang ◽

Yi-Ho Young

Keyword(s):

Young People ◽

Video Gaming ◽

Short Term ◽

Vestibular Evoked Myogenic Potential ◽

Cutoff Value ◽

Myogenic Potential ◽

Cervical Vemp ◽

Before And After ◽

Reflex System

Background: Video gaming (VG) has since the 1980s become increasingly ubiquitous entertainment among the adolescents and young adults. Many young people experienced dizzy spells, but not vertiginous episodes, after playing VG. Objectives: This study performed ocular vestibular-evoked myogenic potential (oVEMP) and cervical VEMP (cVEMP) tests in subjects before and after engaging on VG to investigate the effect of VG on the otolithic reflex system. Methods: Twenty subjects who frequently played VG (>3 days per week) for more than 10 years were assigned to the long-term group. Another 20 subjects with engaging on VG <3 days per week or <10 years were assigned to the short-term group. Each subject underwent baseline oVEMP and cVEMP tests first, followed by playing VG for 1 h. Then, all subjects underwent the same paradigm. The “VG-year” is defined as frequency of VG playing within 1 week (day/week) multiplied by total length of VG engagement (year). Results: Engagement on VG rarely affected the oVEMP responses for either short- or long-term players. In contrast, the response rates of cVEMP significantly declined from pre-VG period (80%) to post-VG period (58%) in the short-term group, but not in the long-term group. The cutoff value for predicting absent cVEMP in VG engagement is 21 VG-year. Conclusion: Short-term engagement on VG may result in temporary cVEMP loss, while permanent cVEMP loss could be identified in long-term VG players. The cutoff value for predicting absent cVEMP in VG engagement is 21 VG-year, indicating that damage to the sacculo-collic reflex system could be anticipated in a subject who has played VG at least 1 h per session, 7 days weekly for 3 years.

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The Effect of Recording Montage and Tone Burst Duration on Cervical and Ocular Vestibular Evoked Myogenic Potential Latency and Amplitude

American Journal of Audiology ◽

10.1044/2018_aja-17-0055 ◽

2019 ◽

Vol 28 (2) ◽

pp. 300-307

Author(s):

Kaylee J. Smith ◽

Devin L. McCaslin ◽

Gary P. Jacobson ◽

Robert Burkard

Keyword(s):

Tone Burst ◽

Burst Duration ◽

Vestibular Evoked Myogenic Potential ◽

Myogenic Potential

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Long-Term Follow-Up of Early Cochlear Implant Device Activation

Audiology and Neurotology ◽

10.1159/000512760 ◽

2021 ◽

pp. 1-11

Author(s):

Stefanie Bruschke ◽

Uwe Baumann ◽

Timo Stöver

Keyword(s):

Speech Recognition ◽

Side Effects ◽

Cochlear Implant ◽

Surgical Techniques ◽

Control Group ◽

First Year ◽

Safe Procedure ◽

Sound Processor

Background: The cochlear implant (CI) is a standard procedure for the treatment of patients with severe to profound hearing loss. In the past, a standard healing period of 3–6 weeks occurred after CI surgery before the sound processor was initially activated. Advancements of surgical techniques and instruments allow an earlier initial activation of the processor within 14 days after surgery. Objective: Evaluation of the early CI device activation after CI surgery within 14 days, comparison to the first activation after 4–6 weeks, and assessment of the feasibility and safety of the early fitting over a 12 month observation period were the objectives of this study. Method: In a prospective study, 127 patients scheduled for CI surgery were divided into early fitting group (EF, n = 67) and control group (CG, n = 60). Individual questionnaires were used to evaluate medical and technical outcomes of the EF. Medical side effects, speech recognition, and follow-up effort were compared with the CG within the first year after CI surgery. Results: The early fitting was feasible in 97% of the EF patients. In the EF, the processor was activated 25 days earlier than in the CG. No major complications were observed in either group. At the follow-up appointments, side effects such as pain and balance problems occurred with comparable frequency in both groups. At initial fitting, the EF showed a significantly higher incidence of medical minor complications (p < 0.05). When developing speech recognition within the first year of CI use, no difference was observed. Furthermore, the follow-up effort within the first year after CI surgery was comparable in both groups. Conclusions: Early fitting of the sound processor is a feasible and safe procedure with comparable follow-up effort. Although more early minor complications were observed in the EF, there were no long-term wound healing problems caused by the early fitting. Regular inspection of the magnet strength is recommended as part of the CI follow-up since postoperative wound swelling must be expected. The early fitting procedure enabled a clear reduction in the waiting time between CI surgery and initial sound processor activation.

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Quantifying the effects of electrode placement and montage on measures of cVEMP amplitude and muscle contraction

Journal of Vestibular Research ◽

10.3233/ves-200033 ◽

2020 ◽

pp. 1-13

Author(s):

Sendhil Govender ◽

Sally M. Rosengren

Keyword(s):

Muscle Contraction ◽

Normal Subjects ◽

Electrode Placement ◽

Electrode Position ◽

Test Results ◽

Vestibular Evoked Myogenic Potential ◽

Active Electrode ◽

Myogenic Potential ◽

Position Errors ◽

Test Outcomes

BACKGROUND: The cervical vestibular evoked myogenic potential (cVEMP) can be affected by the recording parameters used to quantify the response. OBJECTIVE: We investigated the effects of electrode placement and montage on the variability and symmetry of sternocleidomastoid (SCM) contraction strength and cVEMP amplitude. METHODS: We used inter-side asymmetries in electrode placement to mimic small clinical errors in twenty normal subjects. cVEMPs were recorded at three active electrode sites and referred to the distal SCM tendon (referential montages: upper, conventional and lower). Additional bipolar montages were constructed offline to measure SCM contraction strength using closely-spaced electrode pairs (bipolar montages: superior, lower and outer). RESULTS: The conventional montage generally produced the largest cVEMP amplitudes (P < 0.001). SCM contraction strength was larger for referential montages than bipolar ones (P < 0.001). Inter-side electrode position errors produced large variations in cVEMP and SCM contraction strength asymmetries in some subjects, producing erroneous abnormal test results. CONCLUSION: Recording locations affect cVEMP amplitude and SCM contraction strength. In most cases, small changes in electrode position had only minor effects but, in a minority of subjects, the different montages produced large changes in cVEMP and contraction amplitudes and asymmetry, potentially affecting test outcomes.

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Bone-anchored hearing system, contralateral routing of signals hearing aid or cochlear implant: what is best in single-sided deafness?

European Archives of Oto-Rhino-Laryngology ◽

10.1007/s00405-021-06634-7 ◽

2021 ◽

Author(s):

Till F. Jakob ◽

Iva Speck ◽

Ann-Kathrin Rauch ◽

Frederike Hassepass ◽

Manuel C. Ketterer ◽

...

Keyword(s):

Speech Perception ◽

Cochlear Implant ◽

Hearing Aids ◽

Long Term Results ◽

Speech Perception In Noise ◽

Sound Localisation ◽

Therapy Option ◽

Single Sided Deafness ◽

Objective Hearing Tests

Abstract Purpose The aim of the study was to compare long-term results after 1 year in patients with single-sided deafness (SSD) who were fitted with different hearing aids. The participants tested contralateral routing of signals (CROS) hearing aids and bone-anchored hearing systems (BAHS). They were also informed about the possibility of a cochlear implant (CI) and chose one of the three devices. We also investigated which factors influenced the choice of device. Methods Prospective study with 89 SSD participants who were divided into three groups by choosing BAHS, CROS, or CI. All participants received test batteries with both objective hearing tests (speech perception in noise and sound localisation) and subjective questionnaires. Results 16 participants opted for BAHS-, 13 for CROS- and 30 for CI-treatment. The greater the subjective impairment caused by SSD, the more likely patients were to opt for surgical treatment (BAHS or CI). The best results in terms of speech perception in noise (especially when sound reaches the deaf ear and noise the hearing ear), sound localization, and subjective results were achieved with CI. Conclusion The best results regarding the therapy of SSD are achieved with a CI, followed by BAHS. This was evident both in objective tests and in the subjective questionnaires. Nevertheless, an individual decision is required in each case as to which SSD therapy option is best for the patient. Above all, the patient's subjective impairment and expectations should be included in the decision-making process.

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