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Video head impulse test

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https://www.readbyqxmd.com/read/28807728/vestibulo-ocular-reflex-abnormality-in-parkinson-s-disease-detected-by-video-head-impulse-test
#1
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...
August 11, 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
#2
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
#3
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/28696571/acute-evaluation-of-the-acute-vestibular-syndrome-differentiating-posterior-circulation-stroke-from-acute-peripheral-vestibulopathies
#4
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/28653555/usher-s-syndrome-type-ii-a-comparative-study-of-genetic-mutations-and-vestibular-system-evaluation
#5
Giuseppe Magliulo, Giannicola Iannella, Silvia Gagliardi, Nicola Iozzo, Rocco Plateroti, Alessandro Mariottini, Francesca Torricelli
Objective Usher's syndrome type II (USH2) is characterized by moderate to profound congenital hearing loss, later onset of retinitis pigmentosa, and normal vestibular function. Recently, a study investigating the vestibular function of USH2 patients demonstrated a pathologic response to vestibular tests. In this cross-sectional study we performed vestibular tests of a group patients with genetic diagnosis of USH2 syndrome to demonstrate if vestibular damage is present in USH2 patients. Study Design Cross-sectional study...
June 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28650850/systemic-aminoglycosides-induced-vestibulotoxicity-in-humans
#6
Ruth Van Hecke, Vincent Van Rompaey, Floris L Wuyts, Laura Leyssens, Leen Maes
OBJECTIVES: This systematic review aimed to investigate the prevalence and characteristics of vestibular adverse effects of aminoglycoside (AG) therapy in humans and to analyze objective vestibular tests for the detection of AG-induced vestibulotoxicity. DESIGN: PubMed, Cochrane Database, Web of Science, and reference lists of all included studies were screened by two independent researchers. The Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines were followed...
June 23, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28649224/the-video-head-impulse-test
#7
REVIEW
G M Halmagyi, Luke Chen, Hamish G MacDougall, Konrad P Weber, Leigh A McGarvie, Ian S Curthoys
In 1988, we introduced impulsive testing of semicircular canal (SCC) function measured with scleral search coils and showed that it could accurately and reliably detect impaired function even of a single lateral canal. Later we showed that it was also possible to test individual vertical canal function in peripheral and also in central vestibular disorders and proposed a physiological mechanism for why this might be so. For the next 20 years, between 1988 and 2008, impulsive testing of individual SCC function could only be accurately done by a few aficionados with the time and money to support scleral search-coil systems-an expensive, complicated and cumbersome, semi-invasive technique that never made the transition from the research lab to the dizzy clinic...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28623066/association-of-posterior-semicircular-canal-hypofunction-on-video-head-impulse-testing-with-other-vestibulo-cochlear-deficits
#8
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
#9
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
#10
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
#11
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/28561344/bilateral-vestibulopathy-with-positive-tullio-phenomenon
#12
Sigrid Finn, Maren Dietzek, Panagiota Karvouniari, Carsten M Klingner, Rotraud Neumann, Orlando Guntinas-Lichius, Otto W Witte, Hubertus Axer
We describe the case of a 34-year-old patient presenting with the unique combination of bilateral vestibulopathy in combination with noise- and pressure-induced nystagmus. Bilateral vestibular dysfunction was demonstrated by pathological results in video-based head impulse testing as well as in caloric testing. In contrast, cervical vestibular-evoked myogenic potentials were normal, demonstrating normal sacculus function. Due to the positive Tullio phenomenon, semicircular dehiscence syndrome was excluded. Recently, this symptom combination was related to the histopathological finding of vestibular atelectasis...
May 31, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28499299/-current-diagnostic-procedures-for-diagnosing-vertigo-and-dizziness
#13
Leif Erik Walther
Modern diagnostic methods such as video head impulse test and cervical and ocular vestibular evoked myogenic potentials allow to measure canal and otolith function quantitatively and objectively. These methods contribute to a complex assessment of the functional integrity of all 5 sensory elements of the vestibular organ for the first time. Moreover, in combination with additional vestibular tests frequency specific and time depended changes of impairments of vestibular sensors and their pathways can be assessed...
April 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28496432/vestibular-loss-in-older-adults-is-associated-with-impaired-spatial-navigation-data-from-the-triangle-completion-task
#14
Yanjun Xie, Robin T Bigelow, Scott F Frankenthaler, Stephanie A Studenski, Scott D Moffat, Yuri Agrawal
BACKGROUND: Vestibular inputs have been shown to play a critical role in spatial navigation. In this study, we sought to evaluate whether vestibular loss due to aging contributes to impaired spatial navigation as measured by the triangle completion task (TCT). MATERIALS AND METHODS: We recruited three types of participants: young controls <55 years of age, older controls ≥55 years of age, and older patients from a Neurotology Clinic with evidence of vestibular physiologic impairment but who did not have any known vestibular disorder...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28486738/-isolated-high-frequency-hvor-lesion-in-patients-with-chronic-dizziness
#15
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/28486231/decrease-of-horizontal-canal-vestibulo-oculomotor-reflex-gain-in-the-elderly-with-dysequilibrium-without-lifetime-vertigo
#16
Roberto Teggi, Matteo Trimarchi, Omar Gatti, Francesco Fornasari, Mario Bussi
BACKGROUND/AIMS: Unsteadiness in the elderly is a frequent complaint and a strong predictor of falls and psychological distress. Although there is a general consensus that it is a multifactorial condition, recent studies have focused on the role of aging of the vestibular system as a possible cofactor. The aim of our work was to assess horizontal canal function in the elderly. METHODS: We evaluated the gain of horizontal vestibulo-ocular reflex (VOR) with a video head impulse test on a sample of 58 subjects aged >70 years without lifetime episodes of vertigo and correlated the value with different clinical conditions (hypertension, diabetes, prior cardiovascular and vascular disorders of the central nervous system, and falls)...
2017: ORL; Journal for Oto-rhino-laryngology and its related Specialties
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
#17
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
#18
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
#19
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
#20
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
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