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superior canal dehiscence

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https://www.readbyqxmd.com/read/29153260/diagnostic-criteria-for-patulous-eustachian-tube-a-proposal-by-the-japan-otological-society
#1
Toshimitsu Kobayashi, Masahiro Morita, Satoshi Yoshioka, Kunihiro Mizuta, Shigeto Ohta, Toshiaki Kikuchi, Tatsuya Hayashi, Akihiro Kaneko, Nobumasa Yamaguchi, Sho Hashimoto, Hiromi Kojima, Shingo Murakami, Haruo Takahashi
Patulous Eustachian Tube (PET) is of increasing importance in otology. However, despite the abundance of diseases requiring a differential diagnosis from PET, such as superior semicircular canal dehiscence syndrome, perilymphatic fistula, acute low-tone sensorineural hearing loss, etc., there are currently no established diagnostic criteria for PET. In view of these circumstances, the Japan Otological Society (JOS) Eustachian Tube Committee proposed the diagnostic criteria for Patulous Eustachian Tube in 2012, in order to promote clinical research on PET...
November 15, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/29135871/ocular-vestibular-evoked-myogenic-potentials-where-are-we-now
#2
Julia Dlugaiczyk
OBJECTIVE: Over the last decade, ocular vestibular evoked myogenic potentials (oVEMPs) have evolved as a new clinical test for dynamic otolith (predominantly utricular) function. The aim of this review is to give an update on the neurophysiological foundations of oVEMPs and their implications for recording and interpreting oVEMP responses in clinical practice. CONCLUSION: Different lines of anatomical, neurophysiological, and clinical evidence support the notion that oVEMPs measure predominantly contralateral utricular function, while cervical cVEMPs are an indicator of ipsilateral saccular function...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29116385/hearing-eyeball-and-or-eyelid-movements-on-the-side-of-a-unilateral-superior-semicircular-canal-dehiscence
#3
Pierre Bertholon, Pierre Reynard, Yann Lelonge, Roland Peyron, François Vassal, Alexandre Karkas
Hearing of eyeball movements has been reported in superior semicircular canal dehiscence (SSCD), but not hearing of eyelid movements. Our main objective was to report the hearing of eyeball and/or eyelid movements in unilateral SSCD. Our secondary objective was to access its specificity to SSCD and discuss the underlying mechanism. Six patients with SSCD who could hear their eyeball and/or eyelid movements were retrospectively reviewed. With the aim of comparisons, eight patients with an enlarged vestibular aqueduct (EVA), who share the same mechanism of an abnormal third window, were questioned on their ability to hear their eyeball and/or eyelid movements...
November 8, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29095749/genetics-of-vestibular-syndromes
#4
Pablo Roman-Naranjo, Alvaro Gallego-Martinez, Jose A Lopez Escamez
PURPOSE OF REVIEW: The increased availability of next generation sequencing has enabled a rapid progress in the discovery of genetic variants associated with vestibular disorders. We have summarized molecular genetics finding in vestibular syndromes during the last 18 months. RECENT FINDINGS: Genetic studies continue to shed light on the genetic background of vestibular disorders. Novel genes affecting brain development and otolith biogenesis have been associated with motion sickness...
November 1, 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29094067/comorbidities-confounding-the-outcomes-of-surgery-for-third-window-syndrome-outlier-analysis
#5
P Ashley Wackym, Heather T Mackay-Promitas, Shaban Demirel, Gerard J Gianoli, Martin S Gizzi, Dale M Carter, David A Siker
Objective: Patients with third window syndrome and superior semicircular canal dehiscence (SSCD) symptoms whose surgical outcomes placed them as outliers were systematically studied to determine comorbidities that were responsible for their poor outcomes due to these confounding factors. Study Design: Observational analytic case-control study in a tertiary referral center. Methods: Twelve adult patients with clinical SSCD syndrome underwent surgical management and had outcomes that did not resolve all of their subjective symptoms...
October 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/29093067/practice-guideline-cervical-and-ocular-vestibular-evoked-myogenic-potential-testing-report-of-the-guideline-development-dissemination-and-implementation-subcommittee-of-the-american-academy-of-neurology
#6
Terry D Fife, James G Colebatch, Kevin A Kerber, Krister Brantberg, Michael Strupp, Hyung Lee, Mark F Walker, Eric Ashman, Jeffrey Fletcher, Brian Callaghan, David S Gloss
OBJECTIVE: To systematically review the evidence and make recommendations with regard to diagnostic utility of cervical and ocular vestibular evoked myogenic potentials (cVEMP and oVEMP, respectively). Four questions were asked: Does cVEMP accurately identify superior canal dehiscence syndrome (SCDS)? Does oVEMP accurately identify SCDS? For suspected vestibular symptoms, does cVEMP/oVEMP accurately identify vestibular dysfunction related to the saccule/utricle? For vestibular symptoms, does cVEMP/oVEMP accurately and substantively aid diagnosis of any specific vestibular disorder besides SCDS? METHODS: The guideline panel identified and classified relevant published studies (January 1980-December 2016) according to the 2004 American Academy of Neurology process...
November 1, 2017: Neurology
https://www.readbyqxmd.com/read/29022108/middle-cranial-fossa-approach-for-the-repair-of-superior-semicircular-canal-dehiscence-is-associated-with-greater-symptom-resolution-compared-to-transmastoid-approach
#7
REVIEW
Thien Nguyen, Carlito Lagman, John P Sheppard, Prasanth Romiyo, Courtney Duong, Giyarpuram N Prashant, Quinton Gopen, Isaac Yang
BACKGROUND: Superior semicircular canal dehiscence (SSCD) is a disorder of the skull base that is gaining increasing recognition among neurosurgeons. Traditionally, the middle cranial fossa (MCF) approach has been used for the surgical repair of SSCD. However, the transmastoid (TM) approach is an alternative strategy that has demonstrated promising results. METHODS: We performed independent searches of a popular database to identify studies that described outcomes following the surgical repair of SSCD through MCF and TM approaches...
October 11, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28990655/round-window-plugging-in-the-treatment-of-superior-semicircular-canal-dehiscence
#8
Eric F Succar, Periakaruppan V Manickam, Sara Wing, Jeffrey Walter, Joseph S Greene, William J Azeredo
OBJECTIVES/HYPOTHESIS: Objectives were to describe the use of round window plugging for superior semicircular canal dehiscence syndrome and review further recommendations regarding the procedure based on our experience and to compare results with recent literature on round window plugging. STUDY DESIGN: Retrospective case series. METHODS: Fourteen patients underwent round window plugging for superior semicircular canal dehiscence at our institution from 2012 to 2015...
October 9, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28945893/novel-method-of-measuring-canal-dehiscence-and-evaluation-of-its-potential-as-a-predictor-of-symptom-outcomes-after-middle-fossa-craniotomy
#9
Carlito Lagman, Joel S Beckett, Lawrance K Chung, Cheng Hao Jacky Chen, Brittany L Voth, Bilwaj Gaonkar, Quinton Gopen, Isaac Yang
BACKGROUND: Superior semicircular canal dehiscence (SSCD) is an osseous defect of the arcuate eminence of the petrous temporal bone. Strategies for measuring dehiscence size are variable, and the usefulness of such parameters remains in clinical equipoise. OBJECTIVE: To present a novel method of measuring dehiscence volume and to evaluate its potential as a predictor of symptom outcomes after surgical repair of SSCD. METHODS: High-resolution computed tomographic temporal bone images were imported into a freely available segmentation software...
August 9, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28922894/minimally-invasive-middle-fossa-keyhole-craniectomy-for-repair-of-superior-semicircular-canal-dehiscence
#10
(no author information available yet)
No abstract text is available yet for this article.
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28902804/long-term-patient-reported-outcomes-after-surgery-for-superior-canal-dehiscence-syndrome
#11
Mohammed S Alkhafaji, Sanskriti Varma, Seth E Pross, Jeffrey D Sharon, Jason C Nellis, Charles C Della Santina, Lloyd B Minor, John P Carey
OBJECTIVE: Evaluate the long-term patient-reported outcomes of surgery for superior canal dehiscence syndrome (SCDS). STUDY DESIGN: Cross-sectional survey. SETTING: Tertiary referral center. PATIENTS: Adults who have undergone surgery for SCDS with at least 1 year since surgery. MAIN OUTCOME MEASURE(S): Primary outcome: change in symptoms that led to surgery. SECONDARY OUTCOMES: change in 11 SCDS-associated symptoms, change in psychosocial metrics, and willingness to recommend surgery to friends with SCDS...
October 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28891720/vestibular-rehabilitation-following-surgical-repair-for-superior-canal-dehiscence-syndrome-a-complicated-case-report
#12
Wendy J Carender, Melissa Grzesiak
Superior Canal Dehiscence Syndrome (SCDS) causes auditory and vestibular symptoms. Following surgical repair of the dehiscence, patients often experience dizziness and imbalance. This case report describes a postoperative vestibular exercise program, focusing on the principles of central compensation and habituation, and how it was modified for a patient with delayed progress secondary to strabismus and visual vertigo. A 63-year-old male with history of strabismus eye surgery, right hearing loss, aural fullness, and sensitivity to loud sounds was referred for vestibular rehabilitation (VR)...
September 11, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28861037/the-clinical-utility-of-vestibular-evoked-myogenic-potentials-in-the-diagnosis-of-m%C3%A3-ni%C3%A3-re-s-disease
#13
REVIEW
Maxime Maheu, Jenny Marylin Alvarado-Umanzor, Audrey Delcenserie, François Champoux
Ménière's disease (MD) is a condition that has been proposed over 150 years ago, which involves audiological and vestibular manifestations, such as aural fullness, tinnitus, vertigo, and fluctuating hearing thresholds. Over the past few years, many researchers have assessed different techniques to help diagnose this pathology. Vestibular-evoked myogenic potential (VEMP) is an electrophysiological method assessing the saccule (cVEMP) and the utricule (oVEMP). Its clinical utility in the diagnosis of multiple pathologies, such as superior canal dehiscence, has made this tool a common method used in otologic clinics...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28833207/semicircular-canal-dehiscence-among-idiopathic-intracranial-hypertension-patients
#14
Phoebe Kuo, Kenneth A Bagwell, Gino Mongelluzzo, Christopher A Schutt, Ajay Malhotra, Babar Khokhar, John F Kveton
OBJECTIVES/HYPOTHESIS: The cause of superior semicircular canal dehiscence (SSCD) is unknown. Because of a demonstrated association with tegmental defects and obesity, some have suggested idiopathic intracranial hypertension (IIH) could contribute by eroding the bone over the canal and resulting in SSCD. However, an association between IIH and SSCD has not previously been evaluated. Our objective was to evaluate an association between IIH and SSCD. STUDY DESIGN: Retrospective cohort...
August 22, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28790965/heterogeneity-in-reported-outcome-measures-after-surgery-in-superior-canal-dehiscence-syndrome-a-systematic-literature-review
#15
REVIEW
Mira E Ossen, Robert Stokroos, Herman Kingma, Joost van Tongeren, Vincent Van Rompaey, Yasin Temel, Raymond van de Berg
BACKGROUND: Superior canal dehiscence syndrome (SCDS) can be treated surgically in patients with incapacitating symptoms. However, the ideal treatment has not been determined. OBJECTIVES: This systematic literature review aims to assess available evidence on the comparative effectiveness and risks of different surgical treatments regarding: (1) symptom improvement; (2) objectively measurable auditory and vestibular function; (3) adverse effects, and (4) length of hospitalization...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28725523/a-method-of-locating-the-dehiscence-during-middle-fossa-approach-for-superior-semicircular-canal-dehiscence-surgery
#16
Joel S Beckett, Lawrance K Chung, Carlito Lagman, Brittany L Voth, Cheng Hao Jacky Chen, Bilwaj Gaonkar, Quinton Gopen, Isaac Yang
Objectives  Superior semicircular canal dehiscence (SSCD) results from a defect in the middle cranial fossa floor. One challenge during SSCD repair is the lack of a consistent landmark. This study proposes a reference point above the external auditory canal at the level of the zygoma as the inferior craniectomy edge during surgery. Design  This is a retrospective review of patients with SSCD. Setting/Participants  A total of 72 cases of SSCD in 60 patients were repaired via a middle fossa approach at a single institution...
August 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28657952/diagnosis-of-superior-semicircular-canal-dehiscence-in-the-presence-of-concomitant-otosclerosis
#17
Michael Yong, Erica Zaia, Brian Westerberg, Jane Lea
OBJECTIVE: To review three patients with concurrent otosclerosis and superior canal dehiscence identified before operative intervention and provide a practical diagnostic approach to this clinical scenario. STUDY DESIGN: Retrospective patient series. SETTING: Tertiary/quaternary referral center. PATIENTS: Individuals with confirmed diagnoses of concurrent otosclerosis and superior semicircular canal dehiscence syndrome...
September 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28653553/surgical-complications-from-superior-canal-dehiscence-syndrome-repair-two-decades-of-experience
#18
Yanjun Xie, Jeffrey D Sharon, Seth E Pross, Nicholas B Abt, Sanskriti Varma, Charley C Della Santina, Lloyd B Minor, John P Carey
Objective To determine the incidence of surgical complications associated with superior canal dehiscence syndrome (SCDS) repair and identify the demographic, medical, and intraoperative risk factors that are associated with SCDS complications. Study Design Cases series with chart review, including patients who underwent SCDS repair between 1996 and 2015. Setting A tertiary care academic medical center. Subjects and Methods Data were collected from 220 patients, including demographic information, medical comorbidities, prior otologic surgical history, surgical approach, intraoperative findings, and postoperative complications...
August 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28641325/superior-canal-dehiscence-syndrome-associated-with-scuba-diving
#19
Naoharu Kitajima, Akemi Sugita-Kitajima, Seiji Kitajima
A 28-year-old female diver presented with dizziness and difficulty clearing her left ear whilst scuba diving. Her pure-tone audiometry and tympanometry were normal. Testing of Eustachian tube function revealed tubal stenosis. Video-oculography revealed a predominantly torsional nystagmus while the patient was in the lordotic position. Fistula signs were positive. High-resolution computed tomography (HRCT) of the temporal bone revealed a diagnosis of bilateral superior semicircular canal dehiscence (SCDS). Cervical vestibular-evoked myogenic potential (cVEMP) testing showed that the amplitude of the cVEMP measured from her left ear was larger than that from the right...
June 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28628917/anatomical-characteristics-of-facial-nerve-and-cochlea-interaction
#20
Nadine Schart-Morén, Sune Larsson, Helge Rask-Andersen, Hao Li
OBJECTIVE: The aim was to study the relationship between the labyrinthine portion (LP) of the facial canal and the cochlea in human inner ear molds and temporal bones using micro-CT and 3D rendering. A reduced cochlea-facial distance may spread electric currents from the cochlear implant to the LP and cause facial nerve stimulation. Influencing factors may be the topographic anatomy and otic capsule properties. METHODS: An archival collection of human temporal bones underwent micro-CT and 3D reconstruction...
2017: Audiology & Neuro-otology
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