Vestibular test findings in individuals with auditory neuropathy: review

Sinha, Sujeet Kumar; Barman, Animesh; Singh, Niraj Kumar; Rajeshwari, G; Sharanya, R

doi:10.1017/s0022215113000406

Cited by 13 publications

(6 citation statements)

References 15 publications

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“…Moreover, the 10 AN patients complicated with vestibular dysfunction had normal oculomotor center, no spontaneous nystagmus and caloric test-induced nystagmus response abnormalities. The results were consistent with those reported by Sinha et al, 12 suggesting that the vestibular branch of auditory nerve and its dominant structure were also involved. However, due to the slow progression of vestibular neuropathy, the vestibular dysfunction of auditory neurosis patients can be compensated by various compensatory mechanisms, mostly manifested as asymptomatic vestibular dysfunction.…”

Section: Discussionsupporting

confidence: 93%

Clinical relationship between auditory neuropathy and nervous system diseases

et al. 2017

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Objective:To explore the clinical relationship between auditory neuropathy (AN) and nervous system diseases.Methods:A total of 134 AN patients who were treated in our hospital from December 2011 to April 2016 were selected. Then 120 cases (240 ears) with complete data of pure tone audiometry and acoustic immittance test were selected as an AN1 group, which was compared with 30 patients (49 ears) with general sensorineural hearing loss (SHL) in regard to the results of pure tone audiometry and acoustic immittance test. On the other hand, 79 cases (158 ears) of the 134 patients with complete data of DP otoacoustic emission test were selected as an AN2 group, which was compared with 30 normal subjects (60 ears) regarding the results of DP otoacoustic emission test.Results:Increases in the pure-tone hearing threshold by air conduction of AN1 group significantly exceeded those of SHL group at 0.125 and 0.25 kHz (low frequency) (P<0.05). The former group had significantly lower values at 1.0, 2.0 kHz (moderate frequency) and 4.0, 8.0 kHz (high frequency) (P<0.05). Of 134 patients, 14 (19 ears) had evoked V wave upon auditory brainstem response, whereas no waves after I wave were evoked in other tested ears. Distortion product (DP) otoacoustic emissions could all be evoked. AN2 group had significantly higher amplitudes of DP-gram than those of normal control group at 0.5 and 0.7 kHz (low frequency) (P<0.05). Except for three cases of unsteady walking and 10 of dizziness, others did not suffer from typical symptoms of vertigo attack. As to caloric test-induced electronystagmograms, there were 30 bilaterally normal cases (75.0%), one case of left-side semicircular canal paresis (25%) and nine cases of bilateral semicircular canal paresis (22.5%). Four patients with other nervous system diseases were complicated with AN. Other nervous system disorders included three cases of optic nerve atrophy and 7 of lower limb nerve damage.Conclusion:According to characteristic hearing dysfunction, AN may occur in the afferent pathway of acoustic nerve, probably accompanied by the pathological changes of efferent nerve in the olivocochlear system inside the brainstem.

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Section: Discussionsupporting

confidence: 93%

Clinical relationship between auditory neuropathy and nervous system diseases

et al. 2017

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“…The superior vestibular nerve and the semicircular canals can be assessed using electronystagmography (ENG): the inferior vestibular nerve and the saccule by the vestibular-evoked myogenic potentials. Sinha et al two years later reviewed that the neuropathic condition in individuals with auditory neuropathy may additionally involve the vestibular nerve, and in most cases, the pathology is restricted to the peripheral vestibular system and does not affect the central oculomotor system [8].…”

Section: Resultsmentioning

confidence: 99%

Association between Hearing Loss and Vestibular Disorders: A Review of the Interference of Hearing in the Balance

Santos¹,

Venosa²,

Sampaio³

2015

IJOHNS

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Introduction: Dizziness is very prevalent and makes a great impact on people's life. Because of anatomical and functional similarities of hearing and vestibular systems, it is noted that there is a big relation between hearing loss and vestibular disorders. Depending on the age onset of hearing loss, it can cause even delay on motor development. Objective: To find literature that demonstrates the relation between hearing and balance. Confirming that hearing loss or even intervention to improve quality of hearing can interfere on vestibular system. Methodology: Revision of literature was carried out, preferring recent research only in English. Conclusion: Cochlea and vestibular systems have a close relationship; changes in one of them can cause big damage in the other. So, a complete evaluation of vestibular system is recommended before ear surgeries. Video Head Impulse Test is a new procedure able to evaluate high frequency movements of the head. It was an additional exam of vestibular status and came to help detect problems that were not diagnosed before. Efforts must be directed in order to protect the balance.

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“…Our frequency of ANSD (1.12%) in the tertiary care setting is within what is reported by Cummings et al [ 3 ] Vestibular lesions are known to be associated with ANSD but the extent of involvement and site of lesion is variable; though most often they tend to be of peripheral type. [ 11 12 ]…”

Section: Discussionmentioning

confidence: 99%

Neurological associations in auditory neuropathy spectrum disorder: Results from a tertiary hospital in South India

Lepcha¹,

Chandran²,

Alexander³

et al. 2015

Ann Indian Acad Neurol

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Aims:To find out the prevalence and types of neurological abnormalities associated in auditory neuropathy spectrum disorder in a large tertiary referral center.Settings and Design:A prospective clinical study was conducted on all patients diagnosed with auditory neuropathy spectrum disorder in the ear, nose, and throat (ENT) and neurology departments during a 17-month period. Patients with neurological abnormalities on history and examination were further assessed by a neurologist to determine the type of disorder present.Results:The frequency of auditory neuropathy spectrum disorder was 1.12%. Sixty percent were found to have neurological involvement. This included cerebral palsy in children, peripheral neuropathy (PN), spinocerebellar ataxia, hereditary motor-sensory neuropathy, spastic paresis, and ponto-bulbar palsy. Neurological lesions did not present simultaneously with hearing loss in most patients. Sixty-six percent of patients with auditory neuropathy spectrum disorder were born of consanguineous marriages.Conclusions:There is a high prevalence of neurological lesions in auditory neuropathy spectrum disorder which has to be kept in mind while evaluating such patients. Follow-up and counselling regarding the appearance of neuropathies is therefore important in such patients. A hereditary etiology is indicated in a majority of cases of auditory neuropathy spectrum disorder.

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Vestibular test findings in individuals with auditory neuropathy: review

Abstract: Auditory neuropathy implicated the vestibular branch of the VIIIth cranial nerve as well as the cochlear nerve. However, there was variability in terms of vestibular test findings.

Cited by 13 publications

References 15 publications

Clinical relationship between auditory neuropathy and nervous system diseases

Clinical relationship between auditory neuropathy and nervous system diseases

Association between Hearing Loss and Vestibular Disorders: A Review of the Interference of Hearing in the Balance

Neurological associations in auditory neuropathy spectrum disorder: Results from a tertiary hospital in South India

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