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caloric test vhit

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
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
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
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...
July 4, 2016: Laryngoscope
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
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...
June 21, 2016: European Archives of Oto-rhino-laryngology
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...
May 25, 2016: Acta Oto-laryngologica
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
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...
April 25, 2016: European Archives of Oto-rhino-laryngology
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...
March 12, 2016: Laryngoscope
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
Mitesh Patel, Qadeer Arshad, Richard Edward Roberts, Hena Ahmad, Adolfo M Bronstein
HYPOTHESIS: As the anterior and posterior semicircular canals are vital to the regulation of gaze stability, particularly during locomotion or vehicular travel, we tested whether the high-velocity vestibulo-ocular reflex (VOR) of the three ipsilesional semicircular canals elicited by the modified Head Impulse Test would correlate with subjective dizziness or vertigo scores after vestibular neuritis (VN). BACKGROUND: Recovery after acute VN varies with around half reporting persistent symptoms long after the acute episode...
February 2016: Otology & Neurotology
Lingxiao Hou, Taisheng Chen, Kaixu Xu, Wei Wang, Shanshan Li, Qiang Liu, Chao Wen, Yan Cheng, Hui Zhao, Yuanxu Ma, Peng Lin
OBJECTIVE: To discuss the video head impulse tests (vHIT) application values in assessment of the vestibular nerves, function in sudden deafness patients with vertigo. METHODS: There were 60 cases (120 ears) of healthy volunteers as control group, and 182 cases (182 ears) of sudden deafness with vertigo patients as study group. The study group received vHIT and caloric test, and the control group received vHIT. Functions of vestibular superior and inferior nerves were analyzed by the gains of vHIT and the nystagmus, s unilateral weakness of caloric test, with SPSS17...
September 2015: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
Holger A Rambold
This retrospective study examines acute unilateral vestibular failure (up to seven days after onset) with modern vestibular testing (caloric irrigation and video-head-impulse test, vHIT) in 54 patients in order to test if the short-term outcome of the patients depends on the lesion pattern defined by the two tests. Patients were grouped according to a pathological unilateral caloric weakness without a pathological vHIT: group I; additional a pathological vHIT of the lateral semicircular canal (SCC): group II; and an additional pathological vHIT of the anterior SCC: group III...
2015: International Journal of Otolaryngology
Jaume Redondo-Martínez, Carmen Bécares-Martínez, Miguel Orts-Alborch, Francisco Javier García-Callejo, Tomás Pérez-Carbonell, Jaime Marco-Algarra
INTRODUCTION AND OBJECTIVES: The caloric test is the gold standard for the loss of vestibular function diagnosis. The Video Head Impulse Test (vHIT) assesses the same reflex by using a video- assisted examination of the impulsive maneuver. We intend to compare the variation of results of the vHIT and the caloric test in patients with vestibular neuritis with respect to their initial condition at two different moments of their evolution and to check the level of correlation between them and with that of the DHI test METHODS: We explored 20 patients with neuritis by using both vHIT and the caloric test on the same day...
May 2016: Acta Otorrinolaringológica Española
M H Yoo, S H Kim, J Y Lee, C J Yang, H S Lee, H J Park
Caloric test has been used to probe the low-frequency range of lateral canal function and video head impulse test (vHIT) provides an objective measurement of the high-frequency range of canal function in vestibular disorders. Abnormal lateral canal function for high-frequency stimuli tested by vHIT was rare (8%) in vestibular migraine (VM), suggesting that there is a substantial remaining high-frequency canal function in VM. In vestibular neuritis (VN), caloric and vHIT responses are more frequently affected than VM, with a significant positive correlation between both tests...
October 9, 2015: Clinical Otolaryngology
Maxime Maheu, Marie-Soleil Houde, Simon P Landry, François Champoux
Balance disorders are common issues for aging populations due to the effects of normal aging on peripheral vestibular structures. These changes affect the results of vestibular function evaluations and make the interpretation of these results more difficult. The objective of this article is to review the current state of knowledge of clinically relevant vestibular measures. We will first focus on otolith function assessment methods cervical-VEMP (cVEMP) and ocular-VEMP (oVEMP), then the caloric and video-head impulse test (vHIT) methods for semicircular canals assessment...
2015: Frontiers in Neurology
Leigh A McGarvie, Ian S Curthoys, Hamish G MacDougall, G Michael Halmagyi
CONCLUSION: It is suggested that the different results of rotational (video head impulse - vHIT) and caloric tests in patients with Ménière's disease (MD) may be a consequence of the physical enlargement of the membranous duct in the hydropic labyrinths in MD, causing a reduced response to caloric stimulation. OBJECTIVES: There have been reports that the results of two tests of semicircular canal function, the caloric response and the responses to vHIT do not agree...
September 2015: Acta Oto-laryngologica
Angel Batuecas-Caletrio, Santiago Santa Cruz-Ruiz, Angel Muñoz-Herrera, Nicolas Perez-Fernandez
INTRODUCTION: Dizziness is a frequent complaint in patients with vestibular schwannoma (VS). An abnormal vestibulo-ocular reflex (VOR) can explain this dizziness in patients with VS. The video Head impulse test (vHIT) offers a chance to describe specifically the VOR findings in such patients. STUDY DESIGN: Retrospective cases series study in a tertiary referral hospital. METHODS: Fifty consecutive patients with VS were classified in accordance with the morphology of the VOR; gain, covert saccade, and overt saccade were analyzed both in the affected side and in the healthy side...
December 2015: Laryngoscope
Steven S Hamilton, Guangwei Zhou, Jacob R Brodsky
OBJECTIVES: VHIT is the first vestibular test to evaluate all six semicircular canals. This test has advantages over the rotary chair and caloric tests in evaluating children since it does not require fear-inducing darkness or provocation of dizziness. The goal of this study was to review our initial experience with VHIT in children and adolescents at a pediatric vestibular program. METHODS: Results using the ICS Impulse VHIT device in 33 patients <20 years of age were retrospectively reviewed...
August 2015: International Journal of Pediatric Otorhinolaryngology
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