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caloric test vhit

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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
#1
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/28623066/association-of-posterior-semicircular-canal-hypofunction-on-video-head-impulse-testing-with-other-vestibulo-cochlear-deficits
#2
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/28616773/intracochlear-schwannoma-tumor-removal-via-subtotal-cochleoectomy-and-partial-cochlear-reconstruction-with-preservation-of%C3%A2-semicircular-canal-function
#3
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
#4
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
#5
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
#6
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/28395489/-frequency-characteristics-of-the-semicicular-canals-damage-in-patients-with-meniere-disease
#7
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
#8
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/28077250/role-of-video-head-impulse-test-in-lateralization-of-vestibulopathy-comparative-study-with-caloric-test
#9
Pona Park, Joo Hyun Park, Ji Soo Kim, Ja-Won Koo
OBJECTIVE: To evaluate the lateralization value of video head-impulse test (vHIT) for the diagnosis of vestibulopathy and to analyze cases showing dissociated results with caloric test. METHODS: In total, 19 healthy volunteers and 92 dizzy patients who underwent both a caloric test and a vHIT were enrolled. Patients were divided into two groups depending on their fluctuating pattern of vertigo. The vestibulo-ocular reflex (VOR) gain and gain asymmetry (GA) of a vHIT as well as unilateral weakness (UW) and the sum of the slow-phase velocities (SPVs) of warm and cold irrigation of the same side were compared...
January 8, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/27746761/vestibular-function-tests-for-vestibular-migraine-clinical-implication-of-video-head-impulse-and-caloric-tests
#10
Woo Seok Kang, Sang Hun Lee, Chan Joo Yang, Joong Ho Ahn, Jong Woo Chung, Hong Ju Park
Vestibular migraine (VM) is one of the most common causes of episodic vertigo. We reviewed the results of multiple vestibular function tests in a cohort of VM patients who were diagnosed with VM according to the diagnostic criteria of the Barany Society and the International Headache Society and assessed the efficacy of each for predicting the prognosis in VM patients. A retrospective chart analysis was performed on 81 VM patients at a tertiary care center from June 2014 to July 2015. Patients were assessed by the video head impulse test (vHIT), caloric test, vestibular-evoked myogenic potentials (VEMPs), and sensory organization test (SOT) at the initial visit and then evaluated for symptomatic improvement after 6 months...
2016: Frontiers in Neurology
https://www.readbyqxmd.com/read/27638075/bilateral-vestibulopathy
#11
REVIEW
M Strupp, K Feil, M Dieterich, T Brandt
The leading symptoms of bilateral vestibulopathy (BVP) are postural imbalance and unsteadiness of gait that worsens in darkness and on uneven ground. There are typically no symptoms while sitting or lying under static conditions. A minority of patients also have movement-induced oscillopsia, in particular while walking. The diagnosis of BVP is based on a bilaterally reduced or absent function of the vestibulo-ocular reflex (VOR). This deficit is diagnosed for the high-frequency range of the angular VOR by a bilaterally pathologic bedside head impulse test (HIT) and for the low-frequency range by a bilaterally reduced or absent caloric response...
2016: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/27544496/vestibular-function-in-patients-with-niemann-pick-type-c-disease
#12
Tatiana Bremova, Siegbert Krafczyk, Stanislavs Bardins, Jörg Reinke, Michael Strupp
We investigated whether vestibular dysfunction may cause or contribute to postural imbalance and falls in patients with Niemann-Pick type C disease (NP-C). Eight patients with NP-C disease and 20 healthy controls were examined using the video-based head impulse test (vHIT) and caloric irrigation to investigate horizontal canal function as well as ocular- and cervical vestibular evoked myogenic potentials (o- and cVEMP), and binocular subjective visual vertical estimation (SVV) for otolith function, and static posturography...
November 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27374754/discrepancies-between-video-head-impulse-and-caloric-tests-in-patients-with-enlarged-vestibular-aqueduct
#13
COMPARATIVE STUDY
Jinsei Jung, Michelle J Suh, Sung Huhn Kim
OBJECTIVE: We performed the video head impulse test (vHIT) and caloric test in patients with enlarged vestibular aqueducts (EVA). We compared the results with those found in Ménière's disease (MD) and acute vestibular neuritis to clarify the characteristics of vestibular dysfunction in EVA and to suggest reasons for the discrepancy between the vHIT and caloric tests in endolymphatic hydrops. STUDY DESIGN: Retrospective analysis. METHODS: Ten patients with EVA and confirmed biallelic SLC26A4 genetic mutations were enrolled...
April 2017: Laryngoscope
https://www.readbyqxmd.com/read/27368467/video-head-impulse-test-vhit-in-dizzy-children-with-normal-caloric-responses
#14
Ahmed Mohammed Khater, Pretty O Afifi
OBJECTIVE: The caloric test and the video head-impulse test are diagnostic tools to examine dizzy patients through assessing the function of the semicircular canals. There are major differences between the two tests as regards stimulus characteristics, methodology, and function examined. The aim of this study is to evaluate the results of vHIT in children and adolescents with normal caloric test. MATERIALS AND METHODS: This work was performed on 63 patients, but 14 were excluded because of technical problems in the caloric test...
August 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27328962/video-head-impulse-test-a-review-of-the-literature
#15
REVIEW
Salman F Alhabib, Issam Saliba
Video head impulse test (vHIT) is a new testing which able to identify the overt and covert saccades and study the gain of vestibulo-ocular reflex (VOR) of each semicircular canal. The aim of this study is to review the clinical use of vHIT in patients with vestibular disorders in different diseases. PubMed and Cochrane databases were searched for all articles that defined vHIT, compared vHIT with another clinical test, and studied the efficacy of vHIT as diagnostic tools with vestibular disease. 37 articles about vHIT were reviewed...
March 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27224664/video-head-impulse-in-comparison-to-caloric-testing-in-unilateral-vestibular-schwannoma
#16
COMPARATIVE STUDY
Isaac Tranter-Entwistle, Patrick Dawes, Cynthia L Darlington, Paul F Smith, Nicholas Cutfield
CONCLUSIONS: Although there was a statistically significant relationship between the results of the vHIT and the caloric test, the limited strength of this relationship suggests that, for unilateral vestibular schwannoma (UVS), caloric testing and vHIT may provide complementary information on vestibular function. OBJECTIVE: There is limited information that can be used to determine which of the video head impulse test (vHIT) and caloric test might be better used in the diagnosis and management of UVS...
November 2016: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/27159843/recovery-of-vestibulo-ocular-reflex-symmetry-after-an-acute-unilateral-peripheral-vestibular-deficit-time-course-and-correlation-with-canal-paresis
#17
John H J Allum, T Cleworth, Flurin Honegger
BACKGROUND: We investigated how response asymmetries and deficit side response amplitudes for head accelerations used clinically to test the vestibular ocular reflex (VOR) are correlated with caloric canal paresis (CP) values. METHODS: 30 patients were examined at onset of an acute unilateral peripheral vestibular deficit (aUPVD) and 3, 6, and 13 weeks later with three different VOR tests: caloric, rotating chair (ROT), and video head impulse tests (vHIT). Response changes over time were fitted with an exponential decay model and compared with using linear regression analysis...
July 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27113255/determining-vestibular-hypofunction-start-with-the-video-head-impulse-test
#18
COMPARATIVE STUDY
B F van Esch, G E A J Nobel-Hoff, P P G van Benthem, H J van der Zaag-Loonen, Tj D Bruintjes
Caloric testing is considered the 'reference standard' in determining vestibular hypofunction. Recently, the video-head impulse test (vHIT) was introduced. In the current study we aimed to assess the diagnostic value of the vHIT as compared to caloric testing in determining vestibular function. In a cross-sectional study between May 2012 and May 2013, we prospectively analysed patients with dizziness who had completed caloric testing and the vHIT. For the left and right vestibular system we calculated the mean vHIT gain...
November 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/26972747/diverse-clinical-and-laboratory-manifestations-of-bilateral-vestibulopathy
#19
Myunggi Moon, Sun O Chang, Min-Beom Kim
OBJECTIVES/HYPOTHESIS: To identify the clinical and laboratory characteristics of bilateral vestibulopathy (BVP) on the video head impulse test (vHIT). STUDY DESIGN: Retrospective chart analysis. METHODS: During 23 months, 1,789 patients with dizziness underwent vHIT in our tertiary referral hospital. Of these patients, 65 (3.6%) patients had bilaterally positive catch-up saccades. Based on the caloric test, 15 (group 1) had bilateral caloric weakness, 13 (group 2) had unilateral caloric weakness, and 37 (group 3) had normal caloric responses on both ears...
January 2017: Laryngoscope
https://www.readbyqxmd.com/read/26834699/absence-of-rotation-perception-during-warm-water-caloric-irrigation-in-some-seniors-with-postural-instability
#20
Elodie Chiarovano, Pierre-Paul Vidal, Christophe Magnani, Georges Lamas, Ian S Curthoys, Catherine de Waele
Falls in seniors are a major public health problem. Falls lead to fear of falling, reduced mobility, and decreased quality of life. Vestibular dysfunction is one of the fall risk factors. The relationship between objective measures of vestibular responses and age has been studied. However, the effects of age on vestibular perception during caloric stimulation have not been studied. Twenty senior subjects were included in the study, and separated in two groups: 10 seniors reporting postural instability (PI) and exhibiting absence of vestibular perception when they tested with caloric stimulation and 10 sex- and age-matched seniors with no such problems (controls)...
2016: Frontiers in Neurology
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