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Head impulse test

Q X Yao, H Wang, Q Luo, Z D Yu, H B Shi, S K Yin
Objective: To explore the epidemiological characteristics and to help accomplish accurate diagnosis and treatment strategies by analyzing the composition and clinical features of various diseases with acute constant vertigo. Method: We retrospectively analyzed medical records (including name, sex, age, diabetes, hypertension, history of vertigo, family history, etc.),otoneurological examination, vestibular function tests and radiological examination of patients with acute vestibular syndrome.We classified various diseases according to diagnostic criteria, and then analyze the clinical data...
June 5, 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
Joost van Kordelaar, Jantsje H Pasma, Massimo Cenciarini, Alfred C Schouten, Herman van der Kooij, Christoph Maurer
The vestibular system is involved in gaze stabilization and standing balance control. However, it is unclear whether vestibular dysfunction affects both processes to a similar extent. Therefore, the objective of this study was to determine how the reliance on vestibular information during standing balance control is related to gaze stabilization deficits in patients with vestibular dysfunction. Eleven patients with vestibular dysfunction and twelve healthy subjects were included. Gaze stabilization deficits were established by spontaneous nystagmus examination, caloric test, rotational chair test, and head impulse test...
2018: Frontiers in Neurology
Simon D Carr, John A Rutka
INTRODUCTION: Bilateral posterior semicircular canal (PSCC) occlusion is a successful treatment of bilateral benign positional vertigo (BPV) refractory to particle repositioning manoeuvers. Little about the effects on the vestibular ocular reflex (VOR) postoperatively, which is the intent of this study. METHODS: All patients who underwent bilateral posterior canal occlusion for BPV at the University Health Network by the senior author (J.A.R.) between 2001 and 2017 with pre- and postoperative vestibular testing were included in the study...
June 15, 2018: Otology & Neurotology
Eric Anson, Robin T Bigelow, Stephanie Studenski, Nandini Deshpande, Yuri Agrawal
OBJECTIVES: Standing on foam with eyes closed (FOEC) has been characterized as a measure of vestibular function; however, the relative contribution of vestibular function and proprioceptive function to the FOEC test has not been well described. In this study, the authors investigate the relationship between peripheral sensory systems (vestibular and proprioception) and performance on the FOEC test in a cohort of healthy adults. DESIGN: A total of 563 community-dwelling healthy adults (mean age, 72...
June 11, 2018: Ear and Hearing
Takamori Takeda, Yoshiyuki Kawashima, Chiaki Hirai, Ayane Makabe, Taku Ito, Taro Fujikawa, Katsura Yamamoto, Ayako Maruyama, Takeshi Tsutsumi
OBJECTIVE: To describe the vestibular function in patients with superficial siderosis of the central nervous system (SSCN). STUDY DESIGN: Retrospective analysis. SETTING: Tertiary referral center. PATIENTS: Ten consecutive patients with SSCN. This study is the largest case series of SSCN in which detailed neuro-otological findings, including electronystagmography recording, video head impulse test (vHIT), and posturography, were described...
July 2018: Otology & Neurotology
Rebecca J Kamil, Athira Jacob, John Tilak Ratnanather, Susan M Resnick, Yuri Agrawal
OBJECTIVE: This study evaluated whether reduced vestibular function in aging adults is associated with lower hippocampal volume. STUDY DESIGN: Cross-sectional study. SETTING: Baltimore Longitudinal Study of Aging, a long-running longitudinal cohort study of healthy aging. PATIENTS: Eligible participants were aged ≥ 60 years and had both vestibular physiological testing and brain magnetic resonance imaging at the same visit...
July 2018: Otology & Neurotology
Renee M Banakis Hartl, Nathaniel T Greene, Herman A Jenkins, Stephen P Cass, Daniel J Tollin
HYPOTHESIS: Insertion of cochlear implant electrodes generates transient pressure spikes within the vestibular labyrinth equivalent to high-intensity acoustic stimuli. BACKGROUND: Though cochlear implant (CI) surgery is regarded as having low risk of impacting the vestibular system, several studies have documented changes in vestibular function after implantation. The mechanism of these changes is not understood. We have previously established that large, potentially damaging pressure transients can be generated in the cochlea during electrode insertion, but whether pressure transients occur within the vestibular labyrinth has yet to be determined...
July 2018: Otology & Neurotology
Y Du, X J Liu, L L Ren, S Z Zhang, S M Yang, Z M Wu
Objective: To summarize different results of suppression head impulse paradigm (SHIMP) and head impulse paradigm (HIMP) in patients with bilateral and unilateral vestibular loss and to evaluate the practicability of SHIMP in clinical vestibular examination. Method: Seventy subjects with unilateral vestibular loss, bilateral vestibular loss and healthy were included. Morphological characteristics of HIMP and SHIMP results were analyzed. The differences of VOR gains were compared with the paired t test. Result: Almost all SHIMP showed anti-compensatory saccades in healthy group...
May 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
Giulia Corallo, Maurizio Versino, Marco Mandalà, Silvia Colnaghi, Stefano Ramat
The functional head impulse test is a new test of vestibular function based on the ability to recognize the orientation of a Landolt C optotype that briefly appears on a computer screen during passive head impulses imposed by the examiner over a range of head accelerations. Here, we compare its results with those of the video head impulse test on a population of vestibular neuritis patients recorded acutely and after 3 months from symptoms onset. The preliminary results presented here show that while both tests are able to identify the affected labyrinth and to show a recovery of vestibular functionality at 3 months, the two tests are not redundant, but complementary...
June 4, 2018: Journal of Neurology
Paul D Judge, Amanda I Rodriguez, Kamran Barin, Kristen L Janky
The video head impulse test (vHIT) assesses the vestibulo-ocular reflex. Few have evaluated whether environmental factors or visual acuity influence the vHIT. The purpose of this study was to evaluate the influence of target distance, target size, and visual acuity on vHIT outcomes. Thirty-eight normal controls and 8 subjects with vestibular loss (VL) participated. vHIT was completed at 3 distances and with 3 target sizes. Normal controls were subdivided on the basis of visual acuity. Corrective saccade frequency, corrective saccade amplitude, and gain were tabulated...
May 1, 2018: Otolaryngology—Head and Neck Surgery
Dario Andres Yacovino, Leigh Alexander Martin, Manuel Perez Akly, Timothy Carl Hain
OBJECTIVE: Our aim was to determine whether overt catch up saccades (OS) provoked by vestibular stimuli, as observed in the video head impulse test (vHIT), have comparable metrics as visually triggered horizontal saccades (VS), indicating a common saccadic brainstem generator. METHODS: Three groups of patients were studied: patients with neurological disorders causing slow saccades (group 1, n = 12), patients with peripheral vestibular lesions (group 2, n = 43), and normal controls (group 3, = 24)...
2018: PloS One
R Huang, G R Bi
The leading symptoms of bilateral vestibulopathy (BVP) are postural imbalance and unsteadiness of gait, deficits of spatial memory and navigation. The etiology of BVP remains unclear in more than 50% of patients: in these cases neurodegeneration is assumed. Frequent known causes are ototoxicity mainly due to gentamicin, bilateral Menière's disease, autoimmune diseases, meningitis and bilateral vestibular schwannoma, as well as an association with cerebellar degeneration. The diagnosis of BVP is based on a bilaterally reduced or absent function of the vestibulo-ocular reflex (VOR)...
December 20, 2017: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
Y Lin, L X Gao, L Li, J L Wang, J J Shen, F Sun, J H Qiu, D J Zha
Objective: To define clinical and laboratory characteristics of bilateral vestibulopathy(BVP) and to propose diagnostic criteria of this disorder based on clinical and laboratory vestibular function test findings. Method: Forty-two case series with a clinical suspicion of BVP were retrospectively analyzed, in an attempt to determine etiology. Presenting auditory-vestibular symptoms, bedside dynamic visual acuity tests and laboratory test were reviewed, including bithermal caloric test, rotatory chair tests, video head impulse test (vHIT), vestibular-evoked myogenic potentials (VEMP)...
March 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
Q Yuan, Y Zhang, D L Liu, X L Zhang, Q F Zhang
Objective: To review the results of caloric test and the video head impulse test (vHIT) in a cohort of VM patients and assessed the value of each for predicting the prognosis in VM patients. Method: A retrospective analysis was performed on VM patients in our vertigo clinic, vestibular function were assessed by caloric test and vHIT at the initial visit and 6 months after treatment. Complete response (CR) was defined as no need for continued medication, uncomplete response (UR) as improved symptoms but need for continued medication, no symptomatic improvement...
July 5, 2017: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
W Wang, Y C Yang, J H Zhuang, F Li, B Gao
Objective: To compare the results of caloric tests and video head impulse tests (VHIT) in patients with vestibular migraine (VM) and vestibular neuritis (VN), so as to provide help for the differential diagnosis of the two patients. Method: Retrospectively analyze VM and VN patients within 2 weeks of onset from August 1, 2016 to December 31, 2017 in neurology clinic of the Changzheng Hospital of Second Military Medical University, all patients were examined by caloric tests and VHIT, and the results of the two groups were compared and analyzed...
May 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
Zhong Liqun, Kee-Hong Park, Hyo-Jung Kim, Sun-Uk Lee, Jeong-Yoon Choi, Ji-Soo Kim
Introduction: Labyrinthine infarction is a cause of acute audiovestibulopathy, but can be diagnosed only in association with other infarctions involving the brainstem or cerebellar areas supplied by the anterior inferior cerebellar artery (AICA) since current imaging techniques cannot visualize an infarction confined to the labyrinth. This case series aimed to establish embolic labyrinthine infarction as a mechanism of isolated acute audiovestibulopathy. Methods: We analyzed clinical features, imaging findings, and mechanisms of embolism in 10 patients (8 men, age range: 38-76) who had developed acute audiovestibulopathy in association with an obvious source of embolism and concurrent acute embolic infarctions in the non-anterior inferior cerebellar artery territories...
2018: Frontiers in Neurology
Raquel Manrique-Huarte, Diego Calavia, Laura Alvarez-Gomez, Alicia Huarte, Nicolás Perez-Fernández, Manuel Manrique
OBJECTIVES: To measure the auditory (pure tone audiometry and word recognition scores) and vestibular (video head impulse test and vestibular myogenic potentials) outcomes in patients diagnosed with Meniere's disease (MD) who underwent cochlear implantation. MATERIAL AND METHODS: This prospective study included 23 cochlear implant users with MD and 29 patients diagnosed with far-advanced otosclerosis (the control group). RESULTS: The preoperative mean pure tone average thresholds were 99 and 122...
April 2018: Journal of International Advanced Otology
Claudia Jerin, Rebecca Maxwell, Robert Gürkov
OBJECTIVES: To characterize video head impulse testing (vHIT) in definitive Menière's disease and to investigate the relationship between vHIT results and other audiovestibular function tests. DESIGN: Fifty-four patients with certain Menière's disease, that is, patients with clinically definite Menière's disease and endolymphatic hydrops visualized by locally enhanced inner ear MR imaging, were recruited for this study. All patients underwent vHIT. The vestibular-ocular reflex gain at 60 ms and refixation saccades were the outcome parameters measured...
May 14, 2018: Ear and Hearing
Jie Zeng, Hong Ming Huang, Xiao Qian Wang, Kai Bang Zhong, Pei Na Wu
Objective: To analyze the functional change of horizontal semicircular canals after cochlear implantation. Method: Eighteen patients were enrolled in this study.Their vestibular function was evaluated by using the caloric test and video head impulse test before and one week,one month after CI surgery,respectively.The unilateral weakness(UW),slow phase velocity(SPV)in caloric test and gain in video head impulse test(vHIT-G)were observed.Caloric test was abnormal when UW>25% or SPV mean<6°/s,while vHIT was abnormal when vHIT-G<0...
January 20, 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
Ahmet Mahmut Tekin, Erkan Soylu, Handan Turan Dizdar, Fahrettin Yilmaz, Yildirim Ahmet Bayazit
Background: Rhinoplasty is a common surgical procedure that is requested and accepted by patients for cosmetic and functional reasons. Osteotomies are performed on nasal bone, maxillary crest, or vomer to fix the deviations of the nasal dorsum or septum. During the percussion of the osteotomes with the surgical mallet, the vibration energy diffuses to the cranium. Auditory and vestibular systems may be affected by these vibrations. Objectives: To assess the effects of rhinoplasty, in which osteotomies were performed using a hammer, on the audiovestibular system...
May 11, 2018: Aesthetic Surgery Journal
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