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Vestibular testing

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https://www.readbyqxmd.com/read/28339331/differential-diagnosis-of-a-patient-referred-to-physical-therapy-for-dizziness-a-case-report
#1
Zachary Rethorn, Susan J Barlow, Emily Gavlick
STUDY DESIGN: Case report. BACKGROUND: Dizziness is a common and debilitating condition across the lifespan. Patients with this complaint must be carefully examined to determine the cause of dizziness, rule out the presence of central nervous system dysfunction, and determine the appropriateness of physical therapy intervention. CASE DESCRIPTION: A 90-year-old male was referred to physical therapy six months after the onset of dizziness. A thorough history was taken and examination was performed...
March 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28337171/the-skull-vibration-induced-nystagmus-test-of-vestibular-function-a-review
#2
REVIEW
Georges Dumas, Ian S Curthoys, Alexis Lion, Philippe Perrin, Sébastien Schmerber
A 100-Hz bone-conducted vibration applied to either mastoid induces instantaneously a predominantly horizontal nystagmus, with quick phases beating away from the affected side in patients with a unilateral vestibular loss (UVL). The same stimulus in healthy asymptomatic subjects has little or no effect. This is skull vibration-induced nystagmus (SVIN), and it is a useful, simple, non-invasive, robust indicator of asymmetry of vestibular function and the side of the vestibular loss. The nystagmus is precisely stimulus-locked: it starts with stimulation onset and stops at stimulation offset, with no post-stimulation reversal...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28335700/cochlear-implants-in-the-management-of-hearing-loss-in-neurofibromatosis-type-2
#3
Frances Harris, James R Tysome, Neil Donnelly, Juliette Durie-Gair, Gemma Crundwell, Yu Chuen Tam, Richard D Knight, Zebunnisa H Vanat, Nicola Folland, Patrick Axon
OBJECTIVE: Review of cochlear implant (CI) outcomes in patients with Neurofibromatosis Type 2 (NF2), implanted in the presence of an ipsilateral vestibular schwannoma (VS). Hearing restoration was combined in some cases with a Bevacizumab regime. METHOD: Retrospective review of 12 patients, managed over the period 2009-2016, at a tertiary referral multidisciplinary NF2 clinic. The patients are grouped by hearing outcomes to explore likely protective factors, and to generate a proposed decision-making tool for the selection of either CI or Auditory Brainstem Implant (ABI)...
March 24, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28334328/vestibular-aqueduct-midpoint-width-and-hearing-loss-in-patients-with-an-enlarged-vestibular-aqueduct
#4
Mustafa S Ascha, Nauman Manzoor, Amit Gupta, Maroun Semaan, Cliff Megerian, Todd D Otteson
Importance: Elucidating the relationship between vestibular aqueduct size and hearing loss progression may inform the prognosis and counseling of patients who have an enlarged vestibular aqueduct (EVA). Objectives: To examine the association between vestibular aqueduct size and repeated measures of hearing loss. Design, Setting, and Participants: For this retrospective medical record review, 52 patients with a diagnosis of hearing loss and radiologic diagnosis of EVA according to the Valvassori criterion were included...
March 23, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28330815/antimicrobial-photodynamic-therapy-combined-to-periodontal-treatment-experimental-model
#5
Estéfani L Belinello-Souza, Letícia H Alvarenga, Cintia Lima-Leal, Patrícia Almeida, Carolina Guimarães Leite, Tairine R Lima, Jhosepher Previati-Oliveira, Lucas de Pretto, Anderson Zanardi de Freitas, Adjaci U Fernandes, Rodrigo L Marcos, Renato A Prates
BACKGROUND: Antimicrobial photodynamic therapy (aPDT) has been used as an adjuvant treatment for periodontitis. It combines a photosensitizer with a light source to induce reactive oxygen species and kill microbial cells. PpNetNI is a protoporphyrin derivative, and it has a chemical binding site at biofilm and great affinity to microbial cells. The aim of this study was to investigate the effects of aPDT as an adjuvant treatment for periodontitis. METHODS: Thirty healthy male rats Wistar (Rattus norvegicus) were used in this study (Approved by UNINOVE Ethical committee AN0029/2015)...
March 18, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28328999/what-the-electrical-impedance-can-tell-about-the-intrinsic-properties-of-an-electrodynamic-shaker
#6
Bernd Lütkenhöner
Small electrodynamic shakers are becoming increasingly popular for diagnostic investigations of the human vestibular system. More specifically, they are used as mechanical stimulators for eliciting a vestibular evoked myogenic potential (VEMP). However, it is largely unknown how shakers perform under typical measurement conditions, which considerably differ from the normal use of a shaker. Here, it is shown how the basic properties of a shaker can be determined without requiring special sensors such as accelerometers or force gauges...
2017: PloS One
https://www.readbyqxmd.com/read/28323487/pathological-eye-movements-influence-on-the-recordings-of-ocular-vestibular-evoked-myogenic-potential
#7
Ting-Hua Yang, Hsin-Lin Chen, Yi-Ho Young
OBJECTIVE: This study investigated the influence of pathological eye movements on the recordings of ocular vestibulo-evoked myogenic potential (oVEMP). METHODS: Ten patients with pathological eye movements of non-vestibular origin (nine congenital nystagmus and one opsoclonus) who had negative MRI result were assigned to Group A. Another 20 vestibular neuritis (VN) patients with spontaneous nystagmus were assigned to Group B. Both groups underwent audiometry, and caloric, oVEMP and cervical VEMP (cVEMP) tests...
March 21, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28318060/integrating-postural-and-vestibular-dimensions-to-depict-impairment-in-moderate-to-severe-obstructive-sleep-apnea-syndrome-patients
#8
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/28302571/alpha-9-nicotinic-acetylcholine-receptors-mediate-hypothermic-responses-elicited-by-provocative-motion-in-mice
#9
Longlong Tu, Lauren Poppi, John Rudd, Ethan T Cresswell, Doug W Smith, Alan Brichta, Eugene Nalivaiko
Hypothermic responses accompany motion sickness in humans and can be elicited by provocative motion in rats. We aimed to determine the potential role in these responses of the efferent cholinergic vestibular innervation. To this end, we used knockout (KO) mice lacking α9 cholinoreceptor subunit predominantly expressed in the vestibular hair cells and CBA strain as a wild-type (WT) control. In WT mice, circular horizontal motion (1Hz, 4cm radius, 20min) caused rapid and dramatic falls in core body temperature and surface head temperature associated with a transient rise in the tail temperature; these responses were substantially attenuated in KO mice; changes were (WT vs...
March 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28294200/four-year-post-loading-results-of-full-arch-rehabilitation-with-immediate-placement-and-immediate-loading-implants-a-retrospective-controlled-study
#10
Alain Simonpieri, Roberta Gasparro, Giuseppe Pantaleo, Jolanda Mignogna, Francesco Riccitiello, Gilberto Sammartino
OBJECTIVES: The aim of this study was to evaluate implant survival rate and to measure peri-implant bone changes in fullarch rehabilitations with immediate placement and immediate loading implants with platform switching and Morse taper connection, in addition to platelet-rich fibrin (PRF) and buccal bone augmentation, after 4 years of follow-up. METHOD AND MATERIALS: In this retrospective controlled study, patients who had been fully rehabilitated with immediate placement and immediate loading implants were evaluated 4 years post-loading...
March 14, 2017: Quintessence International
https://www.readbyqxmd.com/read/28293782/baha-implant-as-a-hearing-solution-for-single-sided-deafness-after-retrosigmoid-approach-for-the-vestibular-schwannoma-surgical-results
#11
Jan Boucek, Jan Vokral, Libor Cerny, Martin Chovanec, Jiří Skrivan, Eduard Zverina, Jan Betka, Michal Zabrodsky
Skull base tumors and, in particular, vestibular schwannoma (VS) are among the etiological reasons for single-sided deafness (SSD). Patients with SSD have problems in understanding speech in a noisy environment and cannot localize the direction of sounds. Baha is one of the most frequently used systems for SSD compensation. Out of 38 patients with SSD after retrosigmoid removal of VS who underwent testing with Baha softband, 16 were satisfied and were indicated for Baha implantation. Two surgical approaches have been used-the Nijmegen linear incision technique with subdermal thinning (Group I, implant BI300) and fast surgery technique without subdermal thinning (Group II, implant BIA400)...
March 14, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28292832/functional-organization-of-vestibulo-ocular-responses-in-abducens-motoneurons
#12
Haike Dietrich, Stefan Glasauer, Hans Straka
Vestibulo-ocular reflexes (VOR) are the dominating contributors to gaze stabilization in all vertebrates. During horizontal head movements, abducens motoneurons form the final element of the reflex arc that integrates visuo-vestibular inputs into temporally precise motor commands for the lateral rectus eye muscle. Here, we studied a possible differentiation of abducens motoneurons into subtypes by evaluating their morphology, discharge properties and synaptic pharmacology in semi-intact in vitro preparations of larval Xenopus laevis Extracellular nerve recordings during sinusoidal head motion revealed a continuum of resting rates and activation thresholds during vestibular stimulation...
March 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28291858/alveolar-ridge-dimension-6-months-after-implant-placement-with-simultaneous-hard-tissue-augmentation
#13
Siegfried Martin Heckmann, Barbara Mörtlbauer, Dominik Rieder, Manfred Wichmann, Tim Krafft, Antonios Moralis
PURPOSE: When failing front teeth are replaced by implants, vestibular bone deficiencies frequently require augmentation, even though the amount of missing alveolar volume may vary. The objective of this study was to analyze the horizontal alveolar ridge dimension after implant placement and simultaneous augmentation, and to compare it to the condition at the contralateral natural site. MATERIALS AND METHODS: Forty-eight patients with a failing maxillary incisor received an immediate or early implant (Straumann Bone Level), according to a randomized study protocol...
March 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28291479/does-combat-hearing-preservation-equipment-affect-balance
#14
Art Ambrosio, Ali N Hoffer, Michael Hoffer
OBJECTIVES: (1) To investigate whether the occlusion effect and hearing attenuation produced by 3M Combat Arms Ear Plugs (CAEP) affects balance when compared to no hearing protection and (2) to investigate whether the occlusion effect and noise-canceling capabilities of the Nacre QuietPro system affects balance when compared to no hearing protection. METHODS: This prospective study collected pilot data for investigation of mechanisms of balance. 20 subjects with normal hearing and no vestibular dysfunction were tested with blackened goggles in three conditions-no hearing protection, CAEP, and with the Nacre QuietPro...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28290231/the-association-between-vestibular-physical-examination-vertigo-questionnaires-and-the-electronystagmography-in-patients-with-vestibular-symptoms
#15
Shany G Gofrit, Yulia Mayler, Ron Eliashar, Tali Bdolah-Abram, Ophir Ilan, Menachem Gross
OBJECTS: Dizziness makes up a diagnostic and treatment challenge. The diagnostic accuracy of the medical history and vestibular physical examination in cases of vestibular symptoms is not clear. The aim of this study is to determine the association between vestibular physical examination, vestibular questionnaires, and electronystagmography (ENG) test in patients with vestibular symptoms. METHODS: This is a prospective study of 135 adults with vestibular symptoms...
April 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/28290230/cilia-and-ear
#16
Gioia Piatti, Maria Margherita De Santi, Sara Torretta, Lorenzo Pignataro, Daniela Soi, Umberto Ambrosetti
OBJECTIVE: To investigate the prevalence of otological complications derived from primary ciliary dyskinesia (PCD) in adulthood. METHODS: Twenty-three patients with diagnosed PCD underwent medical history aimed at recording the presence of ear, nose, and throat manifestations (ENT) and any surgical treatments. The ENT objectivity was annotated, and then patients were subjected to audiometric test, tympanometry, registration of otoacoustic emission, and vestibular evaluation...
April 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/28284887/downbeat-nystagmus-due-to-ranitidine-in-a%C3%A2-pediatric-patient
#17
Laura Butragueño Laiseca, Blanca Toledo Del Castillo, Cristina Rodríguez Jimenez, Silvia Manrique-Rodríguez, Jimena Pérez Moreno
BACKGROUND: Ranitidine has not been considered as a potential cause of ocular movement conditions. However, it is known that the vestibular nucleus complex, that has a key role in gaze control and vestibule-ocular reflexes, receives hypothalamic histaminergic innervations. Some studies reported the effect of ranitidine blocking the excitatory responses of vestibular nuclei neurons to histamine. CASE REPORT: We report the first case of a downbeat nystagmus secondary to ranitidine in an infant...
February 11, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28282709/analysis-of-saccular-function-with-vestibular-evoked-myogenic-potential-test-in-meniere-s-disease
#18
Sasan Dabiri, Nasrin Yazdani, Mahdis Esfahani, Niloufar Tari, Susan Adil, Zahra Mahvi, Nima Rezazadeh
Meniere's disease is the disorder of inner ear characterized by vertigo, tinnitus and sensorineural hearing loss. The vestibular evoked myogenic potential (VEMP) test could be useful in the analysis of saccular function, and diagnosis of Meniere's disease. In this study, we've analyzed the saccular function, using VEMP test in different groups of Meniere's disease. Patients were categorized as possible, probable or definite Meniere's disease groups according to the guideline of American Academy of Otolaryngology-Head and Neck Surgery...
February 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28280987/vestibular-migraine-patients-are-more-anxious-than-migraine-patients-without-vestibular-symptoms
#19
Özge Kutay, Gülden Akdal, Pembe Keskinoğlu, Birgül Dönmez Balcı, Tunç Alkın
The link between vertigo and anxiety is well known. The aim of this study is to compare anxiety disorders in 3 groups: patients with vestibular migraine (VM), patients with migraine but without vertigo (MO) and healthy controls (HC).We performed cross-sectional analysis of following tests: (a) Hamilton Anxiety Rating Scale (HAMA); (b) State-Trait Anxiety Inventory (STAI-X1 and STAI-X2); (c) Beck Depression Inventory (BDI); (d) Panic-Agoraphobic Scale and (e) Penn State Worry Questionnaire (PSWQ). ANOVA, Kruskal-Wallis and Chi-square tests were used for comparisons and least significant difference was used for further post-hoc analysis...
March 9, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28277209/importance-of-an-interprofessional-team-approach-in-achieving-improved-management-of-the-dizzy-patient
#20
Amanda I Rodriguez, Steven Zupancic, Michael M Song, Joehassin Cordero, Tam Q Nguyen, Charles Seifert
BACKGROUND: Because of its multifaceted nature, dizziness is difficult for clinicians to diagnose and manage independently. Current treatment trends suggest that patients are often referred to the otolaryngologist for intervention despite having a nonotologic disorder. Additionally, many individuals with atypical presentations are often misdiagnosed and spend a significant amount of time waiting for consultation by the otolaryngologist. Few studies have alluded that implementation of an interprofessional team approach in the diagnosis and management of the dizzy patient can improve clinical decision-making...
March 2017: Journal of the American Academy of Audiology
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