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https://www.readbyqxmd.com/read/29342047/direction-fixed-and-direction-changing-positional-nystagmus-in-ramsay-hunt-syndrome
#1
Chang-Hee Kim, Jin Woo Choi, Kyu Jin Han, Yong Sik Lee, Jung Eun Shin
OBJECTIVES: To investigate the incidence of positional nystagmus (PN) using a head-roll test in patients with Ramsay Hunt syndrome with vertigo (RHS_V) and discuss possible mechanisms. STUDY DESIGN: Retrospective study. SETTING: Tertiary referral academic medical center. PATIENTS: Twenty-eight patients with RHS_V were enrolled. MAIN OUTCOME MEASURE: Eye movements were recorded at positions of head roll to the right or left, and PN was classified as direction-fixed or direction-changing...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29330961/clinical-value-of-4-hour-delayed-gadolinium-enhanced-3d-flair-mr-images-in-acute-vestibular-neuritis
#2
Hayoung Byun, Jae Ho Chung, Seung Hwan Lee, Chul Won Park, Dong Woo Park, Tae Yoon Kim
OBJECTIVE: To investigate the clinical significance of 4-hour delayed-enhanced 3.0 Tesla three-dimensional (3D) fluid-attenuated inversion recovery (FLAIR) magnetic resonance (MR) imaging in acute vestibular neuritis. STUDY DESIGN: A prospective observational study. METHODS: Twenty-nine vestibular neuritis patients were enrolled between January 2017 and June 2017. Vestibular function tests, comprising the caloric and video head impulse tests and vestibular-evoked myogenic potential measurements, were performed...
January 13, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29315187/intra-and-interexaminer-variability-of-two-separate-video-head-impulse-test-systems-assessing-all-six-semicircular-canals
#3
Emil Riis Abrahamsen, Ann-Eva Christensen, Dan Dupont Hougaard
OBJECTIVE: To evaluate intra- and interexaminer variability of the video Head Impulse Test (v-HIT) when assessing all six semicircular canals (SCCs) of two separate v-HIT systems. STUDY DESIGN: Prospective study. SETTING: Department of Otolaryngology, Head and Neck Surgery, Aalborg University Hospital, Denmark. PATIENTS: One hundred twenty healthy subjects. INTERVENTION: Four separate tests of all six SCCs with either system A or system B...
February 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29315185/vestibular-function-and-gross-motor-development-in-195-children-with-congenital-hearing-loss-assessment-of-inner-ear-malformations
#4
Yusuke Kimura, Takeshi Masuda, Kimitaka Kaga
OBJECTIVES: To evaluate the relationship between vestibular function and gross motor development in children with inner ear malformations. METHODS: A total of 195 children (average age: 2.4 ± 1.6 yr) with profound hearing loss, defined as a hearing threshold greater than 80 dB, participated in this study. Evaluation of vestibular function was assessed in all children using a damped rotational chair test. Gross motor development was assessed by examining the age of acquisition of head control and independent walking...
February 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29313443/effectiveness-of-transmastoid-plugging-for-semicircular-canal-dehiscence-syndrome
#5
Renee M Banakis Hartl, Stephen P Cass
Objectives (1) Evaluate changes in subjective symptoms in patients following transmastoid canal plugging for superior semicircular canal dehiscence (SSCD) syndrome. (2) Quantify changes in hearing in patients who have undergone transmastoid canal plugging for SSCD syndrome. Study Design Case series with chart review. Setting Single tertiary care institution. Subjects and Methods We retrospectively reviewed patients with SSCD who underwent repair with canal plugging via a transmastoid approach between January 2012 and January 2017...
January 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29310507/inner-ear-test-battery-in-guinea-pig-models-a-review
#6
Yi-Ho Young
OBJECTIVE: This study reviewed the development of the inner ear test battery comprising auditory brainstem response (ABR), and caloric, ocular vestibular-evoked myogenic potential (oVEMP), and cervical vestibular-evoked myogenic potential (cVEMP) tests in guinea pig models at our laboratory over the last 20 years. Detailed description of the methodology for testing the small animals is also included. METHODS: Inner ear disorders, i.e. ototoxicity, noise exposure, or perilymph fistula were established in guinea pig models first...
January 8, 2018: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29305208/vestibulo-cochlear-function-in-inflammatory-neuropathies
#7
Marisa Blanquet, Jens A Petersen, Antonella Palla, Dorothe Veraguth, Konrad P Weber, Dominik Straumann, Alexander A Tarnutzer, Hans H Jung
OBJECTIVE: We aimed to quantify peripheral-vestibular deficits that may contribute to imbalanced stance/gait in patients with inflammatory neuropathies. METHODS: Twenty-one patients (58 ± 15 y [mean age ± 1SD]; chronic-inflammatory-demyelinating-polyneuropathy = 10, Guillain-Barré Syndrome = 5, Anti-MAG peripheral neuropathy = 2, multifocal-motor-neuropathy = 4) were compared with 26 healthy controls. All subjects received video-head-impulse testing (vHIT), caloric irrigation and cervical/ocular vestibular-evoked myogenic-potentials (VEMPs)...
December 20, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29304173/the-reliability-of-nonlinear-least-squares-algorithm-for-data-analysis-of-neural-response-activity-during-sinusoidal-rotational-stimulation-in-semicircular-canal-neurons
#8
Pengyu Ren, Bowen Li, Shiyao Dong, Lin Chen, Yuelin Zhang
Although many mathematical methods were used to analyze the neural activity under sinusoidal stimulation within linear response range in vestibular system, the reliabilities of these methods are still not reported, especially in nonlinear response range. Here we chose nonlinear least-squares algorithm (NLSA) with sinusoidal model to analyze the neural response of semicircular canal neurons (SCNs) during sinusoidal rotational stimulation (SRS) over a nonlinear response range. Our aim was to acquire a reliable mathematical method for data analysis under SRS in vestibular system...
2018: PloS One
https://www.readbyqxmd.com/read/29287890/a-novel-pathogenic-variant-c-975g-a-p-trp325-in-the-pou3f4-gene-in-yakut-family-eastern-siberia-russia-with-the-x-linked-deafness-2-dfnx2
#9
Nikolay A Barashkov, Leonid A Klarov, Fedor M Teryutin, Aisen V Solovyev, Vera G Pshennikova, Edilia E Konnikova, Georgii P Romanov, Alexander V Tobokhov, Igor V Morozov, Alexander A Bondar, Olga L Posukh, Lilya U Dzhemileva, Mikhail I Tomsky, Elza K Khusnutdinova, Sardana A Fedorova
Here, we report a novel hemizygous transition c.975G>A (p.Trp325*) in POU3F4 gene (Xq21) found in two deaf half-brothers from one Yakut family (Eastern Siberia, Russia) with identical inner ear abnormalities ("corkscrew" cochlea with an absence of modiolus) specific to X-linked deafness-2 (DFNX2). Comprehensive clinical evaluation (CT and MR-imaging, audiological and stabilometric examinations) of available members of this family revealed both already known (mixed progressive hearing loss) and additional (enlargement of semicircular canals and postural disorders) clinical DFNX2 features in affected males with c...
January 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29283100/the-efficacy-of-magnetic-resonance-imaging-for-the-diagnosis-of-superior-semicircular-canal-dehiscence
#10
Fatma Beyazal Çeliker, Abdulkadir Özgür, Metin Çeliker, Mehmet Beyazal, Arzu Turan, Suat Terzi, Mehmet Fatih İnecikli
OBJECTIVE: This study aimed to evaluate the efficacy of magnetic resonance imaging (MRI) for diagnosing superior semicircular canal dehiscence (SSCD). MATERIALS AND METHODS: The radiological records of patients who were admitted to our clinic with complaints of otologic and neuro-otologic symptoms between October 2014 and December 2015 were retrospectively reviewed. Among these patients, those who underwent both computed tomography and MRI and were reported to have SSCD in the temporal bone on at least one side were included in the study group...
December 14, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29280497/aggregating-the-symptoms-of-superior-semicircular-canal-dehiscence-syndrome
#11
Laura Naert, Raymond Van de Berg, Paul Van de Heyning, Alexandre Bisdorff, Jeffrey D Sharon, Bryan K Ward, Vincent Van Rompaey
OBJECTIVES/HYPOTHESIS: To aggregate symptoms reported by patients with superior canal dehiscence syndrome (SCDS) and to develop an evidence-based symptom set by performing a systematic review of the literature. STUDY DESIGN: Database search and critical assessment of research studies. METHODS: Medline and PubMed databases were searched for articles that reported the preoperative symptoms of adult and pediatric patients with unilateral and bilateral SCDS...
December 27, 2017: Laryngoscope
https://www.readbyqxmd.com/read/29274769/comparison-of-video-head-impulse-test-and-caloric-reflex-test-in-advanced-unilateral-definite-meni%C3%A3-re-s-disease
#12
F Rubin, F Simon, B Verillaud, P Herman, R Kania, C Hautefort
AIMS: There have been very few studies of the Video Head Impulse Test (VHIT) in patients with Menière's Disease (MD). Some reported 100% normal VHIT results, others not. These discrepancies may be due to differences in severity. The present study compared VHIT and caloric reflex test results in advanced unilateral definite MD. MATERIAL AND METHOD: A prospective study included 37 consecutive patients, with a mean age of 56±12 years. Mean hearing loss was 59±18dB HL; 12 patients were subject to Tumarkin's otolithic crises...
December 20, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/29272988/the-influence-of-the-subarcuate-artery-in-the-superior-semicircular-canal-dehiscence-and-its-frequency-on-stillbirths-illustrative-cases-and-systematic-review
#13
Gabriela Pereira Bom Braga, Jack H Noble, Eloisa Maria Mello Santiago Gebrim, Robert F Labadie, Ricardo Ferreira Bento
Literature describes that on the 25th gestational week the labyrinth is fully formed and with adult size. However, recent studies have shown that the cranial and labyrinth development continues until 3 years of age. OBJECTIVES: To demonstrate through tomographic study the frequency of semicircular canal dehiscence on nine specimens of stillbirths between 32 and 40 weeks and, through literature review, present another possible etiology for its cause. METHODS: Tomographic study of the temporal bone of 9 specimens of stillbirths between 32 and 40 weeks...
December 22, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29260355/vestibular-impairment-in-chronic-inflammatory-demyelinating-polyneuropathy
#14
Gülden Akdal, Tural Tanrıverdizade, İhsan Şengün, Fikret Bademkıran, Koray Koçoğlu, Ayşe Nur Yüceyar, Özgül Ekmekçi, Hatice Karasoy, G Michael Halmágyi
Chronic inflammatory demyelinating polyneuropathy (CIDP) is a common, treatable, autoimmune peripheral neuropathy considered to produce imbalance by weakness and proprioceptive impairment rather than vestibular impairment. We measured semicircular canal vestibular function in 21 CIDP patients (15M/6F) by the video head impulse test and postural stability with a battery comprising the modified Clinical Test of Sensory Integration and Balance, the Berg Balance Scale, the Dynamic Gait Index, the Fall Efficiency Scale, and the International Cooperative Ataxia Rating Scale...
December 19, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29250967/-emergency-diagnosis-of-the-acute-vestibular-syndrome
#15
T László Tamás, Tibor Garai, István Király, Andrea Mike, Csaba Nagy, Ágnes Paukovics, Péter Schmidt, Ferenc Szatmári, Tamás Tompos, Árpád Vadvári, Ágnes Szirmai
INTRODUCTION AND AIM: To diagnose acute vestibular syndrome (AVS) in a prospective study by a new bedside test (providing 1A evidence) based on oculomotor analysis and assessment of hearing loss. To assess the frequency of central and peripheral causes of acute vestibular syndrome in the emergency room. To establish the diagnostic accuracy of acute cranial computed tomography as compared to oculomotor analysis done by video oculography goggles and audiometry. METHOD: Between 1st March 2016 and 1st March 2017 we documented 125 patients (62 women, 63 men, average age 53 years) in the emergency room of the Petz Aladár County Teaching Hospital using the above bedside and instrumental testing...
December 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/29242950/superior-canal-dehiscence-syndrome-diagnosis-with-vestibular-evoked-myogenic-potentials-and-fremitus-nystagmus
#16
R Gürkov, C Jerin, W Flatz, R Maxwell
BACKGROUND: Superior canal dehiscence syndrome (SCDS) is a relatively rare neurotological disorder that is characterized by a heterogeneous clinical picture. Recently, vestibular evoked myogenic potential (VEMP) measurement was established for the diagnosis of SCDS. In the present study, a case series of patients with SCDS were analyzed, with a focus on VEMP. METHODS: Four patients with SCDS were prospectively examined with ocular VEMP (oVEMP) and cervical VEMP (cVEMP)...
December 14, 2017: HNO
https://www.readbyqxmd.com/read/29234688/superior-semicircular-canal-dehiscence-a-new-perspective
#17
Dinesh Sood, Lokesh Rana, Raman Chauhan, Roshni Shukla, Khanak Nandolia
Objective: To determine the use of multi-detector computed tomography (MDCT) in the diagnostic interpretation of superior semicircular canal dehiscence (SSCD) or thinning and its association with ear pathologies and to find whether it is an acquired condition and its association with increase in age. Materials and methods: study was performed in a tertiary care institute present in a village, following approval of the institutional ethical committee. Retrospective review of temporal bone CT examinations performed between September 2016 and March 2017 was done...
2017: European Journal of Radiology Open
https://www.readbyqxmd.com/read/29225027/evolution-of-the-sauropterygian-labyrinth-with-increasingly-pelagic-lifestyles
#18
James M Neenan, Tobias Reich, Serjoscha W Evers, Patrick S Druckenmiller, Dennis F A E Voeten, Jonah N Choiniere, Paul M Barrett, Stephanie E Pierce, Roger B J Benson
Sauropterygia, a successful clade of marine reptiles abundant in aquatic ecosystems of the Mesozoic, inhabited nearshore to pelagic habitats over >180 million years of evolutionary history [1]. Aquatic vertebrates experience strong buoyancy forces that allow movement in a three-dimensional environment, resulting in structural convergences such as flippers and fish-like bauplans [2, 3], as well as convergences in the sensory systems. We used computed tomographic scans of 19 sauropterygian species to determine how the transition to pelagic lifestyles influenced the evolution of the endosseous labyrinth, which houses the vestibular sensory organ of balance and orientation [4]...
December 18, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/29224758/pediatric-tinnitus-incidence-of-imaging-anomalies-and-the-impact-of-hearing-loss
#19
Rhorie Kerr, Elise Kang, Brandon Hopkins, Samantha Anne
OBJECTIVE: Guidelines exist for evaluation and management of tinnitus in adults; however lack of evidence in children limits applicability of these guidelines to pediatric patients. Objective of this study is to determine the incidence of inner ear anomalies detected on imaging studies within the pediatric population with tinnitus and evaluate if presence of hearing loss increases the rate of detection of anomalies in comparison to normal hearing patients. METHODS: Retrospective review of all children with diagnosis of tinnitus from 2010 to 2015 ;at a tertiary care academic center...
December 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29224712/superior-semicircular-canal-dehiscence-diagnosis-and-management
#20
REVIEW
Christine Mau, Naveed Kamal, Saiaditya Badeti, Renuka Reddy, Yu-Lan Mary Ying, Robert W Jyung, James K Liu
The authors provide an update on the clinical manifestations, diagnosis and various approaches to the treatment of superior semicircular canal dehiscence (SSCD). SSCD is a rare condition where the bone overlying the superior semicircular canal thins or dehisces causing characteristic clinical findings. Since this was first reported in 1998 by Minor and colleagues, there has been much advancement made in terms of diagnosis and treatment. Signs and symptoms include a wide variation of both vestibular and auditory manifestations...
December 7, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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