Vestibular evoked myogenic potential in noise-induced hearing loss

Kumar, Kaushlendra; Vivarthini, Christina Jean; Bhat, Jayashree S.

doi:10.4103/1463-1741.64973

Cited by 38 publications

(48 citation statements)

References 10 publications

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“…cVEMP latency results were in agreement with Kumar et al [15] , they reported that in NIHL, as the pure tone average increased, the latency was prolonged, also our results are in agreement with Wang and Young [16] who reported that an increasingly damaged saccule could result in abnormal VEMPs (e.g., absent or delayed VEMPs) in subjects with >40dB at 4 kHz. Similar results are also obtained by Tseng and Young [17] who reported that there was a decreasing order of abnormal percentages in the function of the cochlea, saccule, utricle, and semicircular canals after exposure to a chronic noise, this further supports that pars inferior (cochlea and saccule) is more vulnerable to noise damage than pars superior (utricle and semicircular canals).…”

Section: Discussionsupporting

confidence: 93%

“…According to Vetter [19] , these protective mechanisms have never been assessed as protective mechanism of the vestibular end organs again, this may raise our probability of the vestibular affection before the cochlear affection with chronic noise exposure. This study concluded that there was a significant decrease in the cVE-MP amplitude in relation to the control group, similar results were obtained by Kumar et al [15] ; while these results disagree with Emara and Gabr [20] who reported that there was statistically insignificant reduction of the cVEMP amplitude with increase of the duration and the degree of hearing loss.…”

Section: Discussioncontrasting

confidence: 51%

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Evaluation of Cervical Vestibular Evoked Myogenic Potential in Subjects with Chronic Noise Exposure

2017

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OBJECTIVE:Noise has been recognized as a major cause of cochlear damage resulting in both tinnitus and hearing loss. On the other hand, damage to the vestibular system, especially the saccule, can be considered as a potential problem. The cervical vestibular-evoked myogenic potentials (cVEMPs) have been established as a clinical test of measuring both sac cular and inferior vestibular nerve function. Therefore, it is thought to be sensitive to the noise-induced damage to the vestibular system. Accordingly, this study was designed to assess the vestibular system in subjects exposed to noise during work by using cVEMPs. MATERIALS and METHODS:This study was performed in over 60 adult males who were divided into a study group (consisting of 40 adult males) with history of chronic occupational noise exposure and with variable degree of hearing levels and a control group consisting of 20 healthy adults with normal peripheral hearing, with no history of noise exposure and no vestibular complaints. cVEMP recordings were elicited using 95dB nHL click stimuli. RESULTS:There was statistically significant prolonged cVEMP latency of the P13 and N23 waves of the study versus the control groups. As regard to the sense of imbalance, there were significant prolonged cVEMPs latencies in present versus absent sense of imbalance. However, there were statistically insignificant reduced cVEMP amplitudes in present versus absent sense of imbalance. CONCLUSION:Chronic noise exposure damages the vestibular system especially the saccule in addition to cochlear damage.

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Section: Discussionsupporting

confidence: 93%

Section: Discussioncontrasting

confidence: 51%

Evaluation of Cervical Vestibular Evoked Myogenic Potential in Subjects with Chronic Noise Exposure

2017

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“…In humans, several studies, with relatively small sample sizes ( n = 20-30), showed that abnormal (reduced, delayed or absent responses) cervical vestibular evoked myogenic potentials (VEMPs) and ocular VEMPs are associated with chronic or acute acoustic trauma [62, 131–133]. This supports the hypothesis that noise causes functional damage to the otolithic organs either directly or indirectly.…”

Section: Beyond Hearing Loss: Associated Symptomatologymentioning

confidence: 87%

Current insights in noise-induced hearing loss: A literature review of the underlying mechanism, pathophysiology, asymmetry, and management options

Le¹,

Straatman²,

Lea³

et al. 2017

Journal of Otolaryngology - Head & Neck Surgery

327

235

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BackgroundNoise-induced hearing loss is one of the most common forms of sensorineural hearing loss, is a major health problem, is largely preventable and is probably more widespread than revealed by conventional pure tone threshold testing. Noise-induced damage to the cochlea is traditionally considered to be associated with symmetrical mild to moderate hearing loss with associated tinnitus; however, there is a significant number of patients with asymmetrical thresholds and, depending on the exposure, severe to profound hearing loss as well.Main bodyRecent epidemiology and animal studies have provided further insight into the pathophysiology, clinical findings, social and economic impacts of noise-induced hearing loss. Furthermore, it is recently shown that acoustic trauma is associated with vestibular dysfunction, with associated dizziness that is not always measurable with current techniques. Deliberation of the prevalence, treatment and prevention of noise-induced hearing loss is important and timely. Currently, prevention and protection are the first lines of defence, although promising protective effects are emerging from multiple different pharmaceutical agents, such as steroids, antioxidants and neurotrophins.ConclusionThis review provides a comprehensive update on the pathophysiology, investigations, prevalence of asymmetry, associated symptoms, and current strategies on the prevention and treatment of noise-induced hearing loss.

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“…It has been reported that some individuals with noise-induced hearing loss (NIHL) also suffer from balance disorders (Oosterveld et al, 1982; Juntunen et al, 1987; Golz et al, 2001). Reduced vestibular caloric response (Manabe et al, 1995; Golz et al, 2001), reduced vestibular-evoked myogenic potentials (VEMP) (Wang et al, 2006; Wang & Young, 2007; Kumar et al, 2010; Akin et al, 2012; Zuniga et al, 2012), nystagmus (Man et al, 1980; Shupak et al, 1994; Oosterveld et al, 1982; Golz et al, 2001), and increased body sway (Ylikoski 1988; Kilburn et al, 1992) have been reported. Despite our understanding of the effect of noise on auditory function, the mechanisms underlying noise-induced vestibular deficiency remain to be elucidated.…”

Section: Introductionmentioning

confidence: 99%

Effects of high intensity noise on the vestibular system in rats

Stewart

Huang

et al. 2016

Hearing Research

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Some individuals with noise-induced hearing loss (NIHL) also report balance problems. These accompanying vestibular complaints are not well understood. The present study used a rat model to examine the effects of noise exposure on the vestibular system. Rats were exposed to continuous broadband white noise (0–24kHz) at an intensity of 116dB sound pressure level (SPL) via insert ear phones in one ear for three hours under isoflurane anesthesia. Seven days after the exposure, a significant increase in ABR threshold (43.3±1.9dB) was observed in the noise-exposed ears, indicating hearing loss. Effects of noise exposure on vestibular function were assessed by three approaches. First, fluorescein-conjugated phalloidin staining was used to assess vestibular stereocilia following noise exposure. This analysis revealed substantial sensory stereocilia bundle loss in the saccular and utricular maculae as well as in the anterior and horizontal semicircular canal cristae, but not in the posterior semicircular canal cristae. Second, single unit recording of vestibular afferent activity was performed under pentobarbital anesthesia. A total of 548 afferents were recorded from 10 noise-treated rats and 12 control rats. Noise exposure produced a moderate reduction in baseline firing rates of regular otolith afferents and anterior semicircular canal afferents. Also a moderate change was noted in the gain and phase of the horizontal and anterior semicircular canal afferent’s response to sinusoidal head rotation (1 and 2Hz, 45 degrees/s peak velocity). Third, noise exposure did not result in significant changes in gain or phase of the horizontal rotational and translational vestibular-ocular reflex (VOR). These results suggest that noise exposure not only causes hearing loss, but also causes substantial damage in the peripheral vestibular system in the absence of immediate clinically measurable vestibular signs. These peripheral deficits, however, may lead to vestibular disorders over time.

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Vestibular evoked myogenic potential in noise-induced hearing loss

Cited by 38 publications

References 10 publications

Evaluation of Cervical Vestibular Evoked Myogenic Potential in Subjects with Chronic Noise Exposure

Evaluation of Cervical Vestibular Evoked Myogenic Potential in Subjects with Chronic Noise Exposure

Current insights in noise-induced hearing loss: A literature review of the underlying mechanism, pathophysiology, asymmetry, and management options

Effects of high intensity noise on the vestibular system in rats

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