Is Skull Vibration-Induced Nystagmus Useful in Vestibular Neuritis Follow Up?

Díaz, Ma Piedad García; Torres-García, Lidia; Zamora, Enrique García; Jiménez, Ana Belén Castilla; Guillen, Vanesa Pérez

doi:10.3390/audiolres12020015

Cited by 5 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We have seen reduction of the intensity of nystagmus in all the patients of our study being the most frequent finding the incomplete. As previous authors have shown the intensity of SVIN (as measured by the aSVINwo) correlates to the degree of asymmetry in the VOR between the right and left vestibules [4,12]. In patients with UVL, we have also shown that the amount of reduction of SVIN as measured with the FISVIN correlates to both: the asymmetry of gain of the VOR and the intensity of SVIN.…”

Section: Discussionsupporting

confidence: 76%

“…To test for vestibular function, the video head impulse test (vHIT) provides fast and accurate information. It has been shown that SVIN intensity correlates with the amount of vestibular deficit obtained in the vHIT [12,13]. A similar correlation was also found before when the relative asymmetry between the right and left inner ear function was evaluated with the caloric test [14].…”

supporting

confidence: 78%

See 1 more Smart Citation

Visual Fixation of Skull Vibration Induced Nystagmus in Patients with Peripheral Vestibulopathy

Blanco,

Monopoli-Roca,

Álvarez de Linera-Alperi

et al. 2024

Preprint

View full text Add to dashboard Cite

Nystagmus induced by applying an intense vibratory stimulus to the skull (SVIN) indicates vestibular functional asymmetry. In unilateral vestibular loss, a 100-Hz bone-conducted vibration given to either mastoid immediately causes a primarily horizontal nystagmus. Test is performed in darkness to avoid visual fixation (VF) but there is no data about how much VF affects the often-intense SVIN. The aim is to analyze the amount of reduction of SVIN when VF is allowed during testing. Thus, all patients seen in a tertiary hospital for vertigo or dizziness with positive SVIN were included. SVIN was recorded for 10 seconds for each condition: without VF (aSVINwo) and VF (aSVINw). We obtained an aSVINwo and aSVINw as average slow-phase velocities (SPV) without and with VF. VF index (FISVIN) was calculated as the ratio of SPV. Among the 124 patients included, spontaneous nystagmus (SN) was found in 25% and the mSPV (without VF) of SN was 2.62.4º/s. Mean FISVIN was 0.270.29. FISVIN was 0 in 42 patients and &gt;0 FISVIN &lt;1 in 82 (mean FISVIN 0.390.02). Fixation suppression was found in all patients with SVIN in cases of peripheral vestibulopathy. FISVIN clearly delineates two populations of patients: with or without complete visual reduction of nystagmus.

show abstract

Section: Discussionsupporting

confidence: 76%

supporting

confidence: 78%

Visual Fixation of Skull Vibration Induced Nystagmus in Patients with Peripheral Vestibulopathy

Blanco,

Monopoli-Roca,

Álvarez de Linera-Alperi

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…All patients showed a reduction in the intensity of nystagmus, with incomplete fixation the most frequent finding. It has previously been reported that the intensity of SVIN (as measured by the aSVINwo) correlates to the degree of asymmetry in the VOR between the right and left vestibules [ 4 , 14 ]. In patients with UVL, the amount of reduction in SVIN as measured with the FI SVIN correlates to both the asymmetry of gain of the VOR and the intensity of SVIN.…”

Section: Discussionmentioning

confidence: 99%

“…A video head impulse test (vHIT) provides fast and accurate information on the functional status of the semicircular canal afferents in the high-frequency domain. Although it is considered that vHIT examines high-frequency sensible hair cells, while SVIN, as well as the caloric test, examine the low-frequency sensible vestibular hair cells [ 13 ], it has been shown that SVIN intensity correlates with the amount of vestibular deficit obtained in the vHIT [ 14 , 15 ]. A similar correlation has also been found in case of functional asymmetry between the two horizonal semicircular canals at the caloric test [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Visual Fixation of Skull-Vibration-Induced Nystagmus in Patients with Peripheral Vestibulopathy

Blanco,

Monopoli-Roca,

Álvarez de Linera-Alperi

et al. 2024

Audiology Research

View full text Add to dashboard Cite

Nystagmus induced by applying an intense vibratory stimulus to the skull (SVIN) indicates vestibular functional asymmetry. In unilateral vestibular loss, a 100 Hz bone-conducted vibration given to either mastoid immediately causes a primarily horizontal nystagmus. The test is performed in darkness to avoid visual fixation (VF) but there are no data about how much VF affects the often-intense SVIN. The aim is to analyze the amount of reduction in SVIN when VF is allowed during testing. Thus, all patients seen in a tertiary hospital for vertigo or dizziness with positive SVIN were included. SVIN was recorded for 10 s for each condition: without VF (aSVINwo) and with VF (aSVINw). We obtained an aSVINwo and an aSVINw as average slow-phase velocities (SPV) without and with VF. VF index (FISVIN) was calculated as the ratio of SPV. Among the 124 patients included, spontaneous nystagmus (SN) was found in 25% and the median slow phase velocity (mSPV) (without VF) of SN was 2.6 ± 2.4°/s. Mean FISVIN was 0.27 ± 0.29. FISVIN was 0 in 42 patients, and FISVIN between 0 and 1 was found in 82 (mean FISVIN 0.39 ± 0.02). Fixation suppression was found in all patients with SVIN in cases of peripheral vestibulopathy. FISVIN clearly delineates two populations of patients: with or without a complete visual reduction in nystagmus.

show abstract

Nationwide Prevalence of Video Head Impulse Test Abnormality and its Risk Factors in South Korea

Suh,

Shim,

Kim

et al. 2024

Otolaryngol.--head neck surg.

View full text Add to dashboard Cite

ObjectiveTo identify the prevalence of and relevant information for video head impulse test (vHIT) abnormality in a large population.Study DesignA cross‐sectional design.SettingKorean National Health and Nutrition Examination Survey, 2021.MethodsThe sample was representative of the Korean population, with 2237 participants aged ≥40 years. A vHIT was performed to evaluate vestibular function. The vestibulo‐ocular reflex (VOR) gain and the presence of reproducible catch‐up saccades was assessed in a vHIT. Participants also completed questionnaires for demographics, socioeconomic status, and basic information regarding systemic diseases and dizziness and underwent hearing tests with automated pure‐tone audiometry.ResultsThe prevalence of vHIT abnormality was 22.5%, with unilateral (14.3%) being more common than bilateral (8.2%). The prevalence of vHIT abnormality increased significantly with age, with the highest rate observed in individuals aged >70 years (42.5%). Both hearing and VOR gain deteriorated with age, but the patterns of age‐related progression were different. While hearing loss (HL) deteriorated gradually and progressively throughout adulthood, VOR gain deterioration was markedly evident after 70 years of age.ConclusionConsidering the high prevalence of vHIT abnormality, appropriate social and medical policies are needed to prevent associated injuries and improve patients' quality of life. The distinct age‐related changes in HL and objective findings of vestibular dysfunction indicate the need for different approaches to address these social problems in aging countries.

show abstract

Is Skull Vibration-Induced Nystagmus Useful in Vestibular Neuritis Follow Up?

Cited by 5 publications

References 12 publications

Visual Fixation of Skull Vibration Induced Nystagmus in Patients with Peripheral Vestibulopathy

Visual Fixation of Skull Vibration Induced Nystagmus in Patients with Peripheral Vestibulopathy

Visual Fixation of Skull-Vibration-Induced Nystagmus in Patients with Peripheral Vestibulopathy

Nationwide Prevalence of Video Head Impulse Test Abnormality and its Risk Factors in South Korea

Contact Info

Product

Resources

About