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https://www.readbyqxmd.com/read/28895171/effect-of-aging-and-direction-of-impulse-in-video-head-impulse-test
#1
Tae Hwan Kim, Min-Beom Kim
OBJECTIVE: The aim of this study was to identify the difference of gain value in the video head impulse test (vHIT) according to the age of the patient and the direction of the impulse. METHOD: All participants were subjected to vHIT with horizontal semicircular canal (HSCC). vHIT with vertical canal (posterior and anterior semicircular canal [PSCC and ASCC]) additionally was performed in 434 participants. RESULTS: The mean vestibulo-ocular reflex (VOR) gain was maintained in patients in the HSCC at below 70 years (1...
September 12, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28862109/video-head-impulse-test-for-early-diagnosis-of-vestibular-neuritis-among-acute-vertigo
#2
Qiongfeng Guan, Lisan Zhang, Wenke Hong, Yi Yang, Zhaoying Chen, Peilin Lu, Dan Zhang, Xingyue Hu
BACKGROUND: This study assesses the value of the video head impulse test (vHIT) for early diagnosis of vestibular neuritis (VN) among acute vertigo. METHODS: Thirty-three cases of vestibular neuritis (VN), 96 patients with other acute vertigo (AV), and 50 cases of normal controls used vHIT to quantitatively test a pair of horizontal vestibulo-ocular reflection (VOR) gains, two pairs of vertical VOR gains, and the corresponding three pairs of VOR gain asymmetry. The peculiarity of VOR gains in VN and the differences between VN and other AV, normal controls by vHIT, were collected and analyzed...
September 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/28807728/vestibulo-ocular-reflex-abnormality-in-parkinson-s-disease-detected-by-video-head-impulse-test
#3
Wen Lv, Qiongfeng Guan, Xingyue Hu, Jiaqi Chen, Hong Jiang, Lisan Zhang, Weinv Fan
BACKGROUND: Parkinson's disease (PD) is a common neurodegenerative disease characterized by dopaminergic neuronal loss. The underlying cause of PD is unknown. OBJECTIVE: To assess the clinical relevance of vestibular-ocular reflex (VOR) gain in patients with PD, especially those in the early stages. METHODS: Sixty-three PD patients and 56 control healthy individuals were enrolled in this study between Mar 2015 and Aug 2015. VOR gains were determined by video head impulse test (vHIT) device...
September 14, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28741403/comparative-study-between-the-caloric-vestibular-and-the-video-head-impulse-tests-in-unilateral-meni%C3%A3-re-s-disease
#4
Jonathan Andrés Cordero-Yanza, Edna Verónica Arrieta Vázquez, Juan Carlos Hernaiz Leonardo, Jimena Mancera Sánchez, Mario Sabas Hernández Palestina, Nicolás Pérez-Fernández
OBJECTIVE: Compare the caloric vestibular test (CVT) and the video head impulse test (vHIT) in the evaluation of Meniere's disease (MD) and to analyze their diagnostic accuracy. MATERIALS AND METHODS: Retrospective review of CVT and vHIT performed in MD patients at a tertiary care referral center in Spain. RESULTS: A total of 88 patients were reviewed. The CVT was abnormal in 67% (n = 59) of patients, while the vHIT was abnormal in 66% (n = 58) of them...
July 25, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28716764/influence-of-time-and-direction-information-on-video-head-impulse-gains
#5
Oğuz Yılmaz, Ersoy Öz, Serkan Kurt, Öyküm Esra Aşkın, Elifnur Taşdemir, Berna Özge Mutlu, Ahmet Keleş, Raşit Cevizci
OBJECTIVE: The objective of this study was to establish which factor leads to a higher vestibulo-ocular reflex (VOR) gain: the timing of the movement or the direction of the movement. For this purpose, healthy volunteers were examined under three conditions: (1) when they were informed about the timing of the head movement; (2) when they were informed about the direction of the head movement; and (3) when they knew both the timing and the direction of the head movement. MATERIALS AND METHODS: This study included data from 19 participants between the ages of 20 and 23 years with no neurological or vestibular ailments...
July 17, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28699192/what-is-the-potential-clinical-utility-of-vhit-when-assessing-adult-patients-with-dizziness
#6
Madelyn N Stevens, Douglas B Garrison, David M Kaylie
No abstract text is available yet for this article.
July 12, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28696571/acute-evaluation-of-the-acute-vestibular-syndrome-differentiating-posterior-circulation-stroke-from-acute-peripheral-vestibulopathies
#7
REVIEW
Benjamin Kwok-Tung Tsang, Alex Siew-Kar Chen, Mark Paine
This review article aims to provide an evidence-based approach to evaluating the patient who presents with acute prolonged, spontaneous vertigo in the context of the acute vestibular syndrome (AVS). Differentiation of posterior circulation stroke presenting as an acute vestibular syndrome has been regarded as an important diagnostic challenge for physicians involved in acute care. Current evidence suggests that a targeted approach to history taking and physical examination with emphasis on the oculomotor examination, more specifically the HINTS (Head Impulse/ Nystagmus/Test-of-skew) examination battery, yields a higher sensitivity for diagnosis of posterior circulation stroke than even standard magnetic resonance imaging with diffusion weighted imaging...
July 11, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28665247/the-impact-of-vestibular-status-prior-to-cochlear-implantation-on-postural-control-a-multiple-case-study
#8
Maxime Maheu, Sara Pagé, Andréanne Sharp, Audrey Delcenserie, François Champoux
OBJECTIVE: The goal of the present study was to investigate the impact of unilateral cochlear implantation on postural control in relation to the vestibular status before CI surgery. METHODS: We recruited 17 participants (four CI candidates and 13 hearing controls) and performed complete vestibular evaluation (cVEMP, oVEMP, vHIT) and postural evaluation using a force platform, prior and following unilateral cochlear implant surgery. RESULTS: Our study suggests that an increase in postural sway following cochlear implant was present only for the participants that received the implant in the ear with the better vestibular function...
September 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28623066/association-of-posterior-semicircular-canal-hypofunction-on-video-head-impulse-testing-with-other-vestibulo-cochlear-deficits
#9
Alexander A Tarnutzer, Christopher J Bockisch, Elena Buffone, Konrad P Weber
OBJECTIVES: The video-head-impulse test (vHIT) provides a functional assessment of all six semicircular canals (SCC). Occasionally isolated loss of the posterior canal(s) (ILPC) is diagnosed, though this finding is poorly characterized. Here we assessed how accurate that diagnosis is by measuring the co-occurrence of abnormalities on caloric irrigation, vestibular-evoked myogenic-potentials and audiometry. METHODS: We identified 52 patients with ILPC (unilateral=40, bilateral=12)...
August 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28619435/video-head-impulse-test-can-detect-brainstem-dysfunction-in-multiple-sclerosis
#10
Ivan Pavlović, Berislav Ruška, Tin Pavičić, Magdalena Krbot Skorić, Luka Crnošija, Ivan Adamec, Mario Habek
BACKGROUND: The aim of this study was to investigate the potential role of video head impulse test (vHIT) in the detection of brainstem lesions in patients with multiple sclerosis (MS). METHODS: Sixty-eight participants were enrolled and divided into two groups: 39 healthy subjects (HC) (78 ears, 20 females, mean age 25,3±6,3) and 29 MS patients (58 ears, 14 females, mean age 33,7±7,7). Both groups underwent vHIT, and in MS group MRI was analyzed for the presence of brainstem lesions...
May 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28616773/intracochlear-schwannoma-tumor-removal-via-subtotal-cochleoectomy-and-partial-cochlear-reconstruction-with-preservation-of%C3%A2-semicircular-canal-function
#11
S K Plontke, S Kösling, N Pazaitis, T Rahne
We report about a patient, who in 2005, as a 37-year-old, experienced a sudden, mild to moderate, mid-frequency sensorineural hearing loss in the right ear, along with tinnitus and mild dizziness. MRI of the temporal bone revealed a very small (1 mm) enhancing lesion in the second turn of the right cochlea after injection of contrast medium. Hearing gradually deteriorated, with complete hearing loss in 2015. At this time, an MRI scan showed a lesion completely filling the cochlea.The tumor was removed through a subtotal cochleoectomy...
June 14, 2017: HNO
https://www.readbyqxmd.com/read/28570417/vestibular-restoration-and-adaptation-in-vestibular-neuritis-and-ramsay-hunt-syndrome-with-vertigo
#12
Eduardo Martin-Sanz, Almudena Rueda, Jonathan Esteban-Sanchez, Joaquin Yanes, Jorge Rey-Martinez, Ricardo Sanz-Fernandez
OBJECTIVE: To evaluate vestibular restoration and the evolution of the compensatory saccades in acute severe inflammatory vestibular nerve paralysis, including vestibular neuritis and Ramsay Hunt syndrome with vertigo. STUDY DESIGN: Prospective. SETTING: Tertiary referral center. PATIENTS: Vestibular neuritis (n = 18) and Ramsay Hunt syndrome patients with vertigo (n = 13) were enrolled. INTERVENTION: After treatment with oral corticosteroids, patients were followed up for 6 months...
August 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28486738/-isolated-high-frequency-hvor-lesion-in-patients-with-chronic-dizziness
#13
Roland Hülse, Manfred Hülse, Karl Hörmann, Matthias Hölzl, Richard Birk, Angela Wenzel
In the presented study video-head impulse test (vHIT) was performed in 72 patients with complaints of dizziness for more than 3 months who did not show any pathology in rotatory chair testing or caloric test, in order to analyzed high frequency vestibular-ocular-reflex (VOR). Retrospective data analyzed of rotatory chair testing, caloric tests and vHIT results were accomplished in 72 patients. Gain, gain variance and the occurrence of catch-up saccades were measured. 10 patients (n=10; 13.8%) showed pathologic vHOR results with reduced gain...
July 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28477092/-intracochlear-schwannoma-tumor-removal-via-subtotal-cochleoectomy-and-partial-cochlear-reconstruction-with-preservation-of-semicircular-canal-function-german-version
#14
S Plontke, S Kösling, N Pazaitis, T Rahne
We report about a patient who in 2005, aged 37 years, experienced sudden mild to moderate, mid-frequency sensorineural hearing loss in the right ear along with tinnitus and mild dizziness. MRI of the temporal bone revealed a very small (1 mm) contrast-enhancing lesion in the second turn of the right cochlea. Hearing gradually deteriorated with complete hearing loss in 2015. At this time, an MRI scan showed a lesion completely filling the cochlea.The tumor was removed via transmeatal subtotal cochleoectomy...
July 2017: HNO
https://www.readbyqxmd.com/read/28436631/-video-head-impulse-test-for-evaluation-of-vestibular-function-in-patients-with-vestibular-neuritis-and-benign-paroxysmal-positional-vertigo
#15
Qiongfeng Guan, Lisan Zhang, Wenke Hong, Yi Yang, Zhaoying Chen, Dan Zhang, Xingyue Hu
Objective: To assess the clinical application of video head impulse test (vHIT) for vestibular function in vestibular neuritis (VN) and benign paroxysmal positional vertigo (BPPV) patients. Methods: Thirty-three patients with VN and 43 patients with BPPV were enrolled from Sir Run Run Shaw Hospital and Ningbo Second Hospital from March 15 to September 10, 2015; and 50 healthy controls were also enrolled in the study. vHIT was used to quantitatively test the vestibulo-ocular reflex (VOR) gains of a pair of horizontal semicircular canals...
January 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28395489/-frequency-characteristics-of-the-semicicular-canals-damage-in-patients-with-meniere-disease
#16
K X Xu, T S Chen, W Wang, S S Li, Q Liu, C Wen, X Han, P Lin
Objective: To evaluate semicircular canal damage and its frequency characteristics in Meniere disease patients. Methods: Sixty-seven Meniere disease patients accepted the video-head impulse test(vHIT)which responses to semicircular canal function of high frequency area, head shaking test(HST) which responses to semicircular canal function of middle frequency area, and caloric test(CT) which responses to semicircular canal function of low frequency area.Preferences were recorded including the video head impulse test gain (vHIT-G), head shaking nystagmus (HSN) and parameters of the unilateral weakness (UW) as observation index, and results of all the three tests were analyzed according to Meniere disease patients...
March 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28391531/efficacy-of-steroid-therapy-based-on-symptomatic-and-functional-improvement-in-patients-with-vestibular-neuritis-a-prospective-randomized-controlled-trial
#17
Myung Hoon Yoo, Chan Joo Yang, Shin Ae Kim, Marn Joon Park, Joong Ho Ahn, Jong Woo Chung, Hong Ju Park
The aim of this study was to examine the efficacy of methylprednisolone in vestibular neuritis (VN) by objective and subjective measures. This prospective controlled randomized study was conducted at one tertiary hospital. Twenty-nine VN patients were randomized to either the steroid (n = 15) or the control (n = 14) group. The steroid group received methylprednisolone for 2 weeks, whereas control patients did not; both groups underwent regular vestibular exercises and were prescribed a Ginkgo biloba...
June 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28352247/refixation-saccades-with-normal-gain-values-a-diagnostic-problem-in-the-video-head-impulse-test-a-case-report
#18
Leise Elisabeth Hviid Korsager, Christian Emil Faber, Jesper Hvass Schmidt, Jens Højberg Wanscher
Refixation saccades with normal gain value occur more frequently with increasing age. The phenomenon has also been observed in different vestibular disorders. In this case, we present a young male with normal gain value and refixation saccades tested with the video head impulse test (vHIT) the day after his cochlear implantation. One month after surgery, refixation saccades were no longer present. This suggests that refixation saccades can occur as a result of temporary pathology such as surgery. Refixation saccades with normal gain values might reflect a partial deficit in the vestibulo-ocular reflex...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28318060/integrating-postural-and-vestibular-dimensions-to-depict-impairment-in-moderate-to-severe-obstructive-sleep-apnea-syndrome-patients
#19
Alessandro Micarelli, Claudio Liguori, Andrea Viziano, Francesca Izzi, Fabio Placidi, Marco Alessandrini
Vestibular dysfunction was linked to moderate-to-severe obstructive sleep apnea syndrome (OSAS) patients in literature. However, due to a lack of knowledge among valid and recent implementations conceived to study postural control on static posturography (SP) and vestibulo-ocular reflex (VOR) gain under physiological conditions (video Head Impulse Test; vHIT), the aim of this work was to integrate (i) VOR changes via vHIT implementation, (ii) postural arrangement by studying both classical parameters and frequency spectra (PS) and (iii) correlation between these findings, polygraphic (PG) and subjective scores along Dizziness Handicap Inventory (DHI) and Epworth Sleepiness Scale (ESS)...
March 20, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28265260/role-of-the-patient-s-history-of-vestibular-symptoms-in-the-clinical-evaluation-of-the-bedside-head-impulse-test
#20
Christoph Helmchen, Julia Knauss, Peter Trillenberg, Anita Frendl, Andreas Sprenger
OBJECTIVE: Our aim was to identify the role of the investigators' knowledge of the patient's history of vestibular symptoms (PVH) in the clinical evaluation of the bedside head-impulse test (bHIT). We hypothesized that this knowledge will reduce uncertainty and improve bHIT accuracy when compared to quantitative analysis of the vestibulo-ocular reflex by video head-impulse test (vHIT). METHODS: We looked for changes in the clinical assessment of the bHIT in 594 consecutive patients before and after taking PVH...
2017: Frontiers in Neurology
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