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https://www.readbyqxmd.com/read/28341566/vibration-induced-nystagmus-in-patients-with-vestibular-schwannoma-characteristics-and-clinical-implications
#1
Jeon Mi Lee, Mi Joo Kim, Jin Won Kim, Dae Bo Shim, Jinna Kim, Sung Huhn Kim
OBJECTIVE: To investigate the clinical significance of vibration-induced nystagmus (VIN) in unilateral vestibular asymmetry and vestibular schwannoma. METHODS: Thirteen patients with vestibular schwannoma underwent the VIN test, in which stimulation was applied to the mastoid processes and sternocleidomastoid (SCM) muscles on the ipsilateral and contralateral sides of lesions. Preoperative VIN was measured, and changes in VIN were followed up for 6months after tumor removal...
March 6, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
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/28333776/transcanal-endoscopic-ear-surgery-for-middle-ear-cholesteatoma
#3
Eran Glikson, Ruth Yousovich, Jobran Mansour, Michael Wolf, Lela Migirov, Yisgav Shapira
OBJECTIVE: To evaluate the clinical parameters, outcomes, and complications of transcanal endoscopic ear surgeries for middle ear cholesteatoma. STUDY DESIGN: Retrospective study. SETTING: Tertiary university-affiliated medical center. PATIENTS: Adult patients (age >18) who underwent transcanal endoscopic ear surgeries for cholesteatoma, between March 2009 and March 2015. INTERVENTION: Transcanal endoscopic surgery was indicated when the cholesteatoma did not extend posterior to the anterior limb of the lateral semicircular canal...
March 22, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28330628/analysis-of-the-dura-involvement-in-cholesteatoma-surgery
#4
David Schwarz, Antoniu-Oreste Gostian, Sami Shabli, Philipp Wolber, Karl Bernd Hüttenbrink, Andreas Anagiotos
OBJECTIVE: The involvement of the dura is a rare yet potentially life-threatening complication during cholesteatoma surgery. Thus, the knowledge about treatment and consequences of this issue is of great importance to every ear surgeon. METHODS: This retrospective study analyzed the dura involvement with regard to the type of defect, reconstruction method used, and the post-operative complications of 1291 pediatric and adult cholesteatoma surgeries performed at an academic tertiary care center over a twelve-year period...
March 19, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28326007/evaluation-of-the-cortical-silent-period-of-the-laryngeal-motor-cortex-in-healthy-individuals
#5
Mo Chen, Rebekah L S Summers, George S Goding, Sharyl Samargia, Christy L Ludlow, Cecília N Prudente, Teresa J Kimberley
Objective: This work aimed to evaluate the cortical silent period (cSP) of the laryngeal motor cortex (LMC) using the bilateral thyroarytenoid (TA) muscles with transcranial magnetic stimulation (TMS). Methods: In 11 healthy participants, fine-wire electromyography (EMG) was used to record bilateral TA muscle responses to single pulse TMS delivered to the LMC in both hemispheres. Peripheral responses to stimulation over the mastoid, where the vagus nerve exits the skull, were collected to verify the central origin of the cortical stimulation responses by comparing the latencies...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28323018/modulation-of-auditory-percepts-by-transcutaneous-electrical-stimulation
#6
Margarete Anna Ueberfuhr, Amalia Braun, Lutz Wiegrebe, Benedikt Grothe, Markus Drexl
Transcutaneous, electrical stimulation with electrodes placed on the mastoid processes represents a specific way to elicit vestibular reflexes in humans without active or passive subject movements, for which the term galvanic vestibular stimulation was coined. It has been suggested that galvanic vestibular stimulation mainly affects the vestibular periphery, but whether vestibular hair cells, vestibular afferents, or a combination of both are excited, is still a matter of debate. Galvanic vestibular stimulation has been in use since the late 18(th) century, but despite the long-known and well-documented effects on the vestibular system, reports of the effect of electrical stimulation on the adjacent cochlea or the ascending auditory pathway are surprisingly sparse...
March 17, 2017: Hearing Research
https://www.readbyqxmd.com/read/28322125/anatomy-specific-virtual-reality-simulation-in-temporal-bone-dissection
#7
Garrett D Locketz, Justin T Lui, Sonny Chan, Kenneth Salisbury, Joseph C Dort, Patricia Youngblood, Nikolas H Blevins
Objective To evaluate the effect of anatomy-specific virtual reality (VR) surgical rehearsal on surgeon confidence and temporal bone dissection performance. Study Design Prospective pre- and poststudy of a novel virtual surgical rehearsal platform. Setting Academic otolaryngology-head and neck surgery residency training programs. Subjects and Methods Sixteen otolaryngology-head and neck surgery residents from 2 North American training institutions were recruited. Surveys were administered to assess subjects' baseline confidence in performing 12 subtasks of cortical mastoidectomy with facial recess...
March 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28300924/staged-retroauricular-flap-for-helical-reconstruction-after-mohs-micrographic-surgery
#8
Felipe Bochnia Cerci
Staged retroauricular flap is a great option for full-thickness defects along the helical rim and antihelix. Donor site consists of the posterior ear, postauricular sulcus and mastoid area. The advantages of this flap include hidden donor scar, donor tissue similarity and rich vascularity. We present a case of collision tumor on the left helix treated with Mohs micrographic surgery and the resulting full-thickness defect repaired with a staged retroauricular flap. This flap is an effective technique for full-thickness helical defect repair with relatively little operative morbidity...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28290917/evaluation-of-receiver-stimulator-migration-in-cochlear-implantation-using-the-subperiosteal-pocket-technique-a-prospective-clinical-study
#9
Y Güldiken, B Polat, N Enver, L Aydemir, Ş Çomoğlu, K S Orhan
OBJECTIVE: This study aimed to evaluate migration of the receiver-stimulator after cochlear implantation using the subperiosteal pocket technique. METHODS: A prospective clinical study was performed of 32 paediatric patients (aged between 12 months and 8 years; mean ± standard deviation, 28 ± 19 months) who underwent cochlear implantation in tertiary referral centres. The degree of migration was evaluated using measurements between the receiver-stimulator and selected reference points: the lateral canthus, tragus and mastoid tip...
March 14, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28290916/comparing-electronic-recording-with-a-diagrammatic-template-versus-traditional-handwritten-recording-of-tympanomastoid-procedures-third-audit-cycle-of-95-cases
#10
S Fang, A Habeeb, P Gluckman, R Kanegoankar
BACKGROUND: The middle ear and mastoid are complex three-dimensional structures and therefore tympanomastoid procedures require detailed documentation. Traditional written accounts can be inaccurate and difficult to interpret. METHODS: This audit of 95 patients compares the completion of essential operative details using: an all-electronic version of a standardised proforma with a diagrammatic template, a non-electronic version with a diagrammatic template, and a traditional handwritten template...
March 14, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28277483/endoscopy-assisted-ear-surgery-for-treatment-of-chronic-otitis-media-with-cholesteatoma-adhesion-or-retraction-pockets
#11
Cagatay Han Ulku
The objective of this study was to analyze the results of endoscopy-assisted ear surgery for the treatment of chronic otitis media with cholesteatoma, adhesion, or retraction pockets.Fifty-one patients who underwent oto-endoscopy-assisted canal wall up tympanomastoid surgery and/or limited anterior atticotomy with tympanoplasty for chronic otitis media with cholesteatoma, adhesion, or retraction pocket from 2006 to 2013 have been included in this study. Eradication of the disease from the middle ear and mastoid air cells was achieved by combination of the oto-microscobic and oto-endoscopic approaches...
March 8, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28270277/application-of-third-generation-dual-source-ct-for-ultra-high-resolution-temporal-bone-imaging-using-automated-tube-voltage-adaptation-in-children-with-hearing-impairment
#12
Yuanli Zhu, Yu Chen, Xinmiao Fan, Huadan Xue, Xiaowei Chen, Man Wang, Yun Wang, Zhuhua Zhang, Zhengyu Jin
Objective To evaluate the radiation dose and image quality of the third-generation dual-source CT using automated tube voltage adaptation (CARE kV) in temporal bone scanning in pediatric patients with hearing impairment. Methods Totally 27 children with hearing impairment less than 18 years old were randomly divided into two groups:Group A (n=14),examined with CARE kV (reference with 100 kV and 214 mA)and sinogram-affirmed iterative reconstruction;and Group B (n=13),examined with CARE kV (reference with 100 kV and 171 mA)and advanced modeled iterative reconstruction...
February 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28264728/the-posterior-auricular-muscle-a-useful-anatomical-landmark-for-otoplasty
#13
C Stephen, A G Lowrie
BACKGROUND: The correct anatomical placement of conchomastoid sutures during suture otoplasty can sometimes prove challenging. If the suture vector is inaccurate, reduction can be difficult and this may lead to malrotation of the pinna. METHODS: This paper describes the adoption of the auricularis posterior muscle, which runs from the mastoid to the concha and whose function is to adduct the pinna, as a marker for conchomastoid suture placement. RESULTS AND CONCLUSION: The muscle is easily identified and dissected, providing a landmark for the placement of sutures onto the adjacent concha and mastoid fascia...
March 7, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28255973/chondromyxoid-fibroma-of-the-skull-base-our-experience-with-an-elusive-disease
#14
Giancarlo D'Andrea, Alessandro Pesce, Guido Trasimeni, Venceslao Wierzbicki, Veronica Picotti, Alessandra Serraino, Riccardo Caruso
Chondromyxoid fibroma (CMF) is an extremely rare lesion of the skull base. This histologic type typically predilects metaphysis of the long bones. It is locally invasive/infiltrative, and this tendency is more concerning in the skull base, where a radical resection is often technically impossible because of the presence of vital neurovascular structures. We present a case of a 19-year-old woman who presented with a sudden onset of right facial weakness, progressively worsening to a severe disfiguring motor weakness...
March 2, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28255931/scary-gas-intravascular-intracranial-and-intraspinal-ectopic-gas-part-iii
#15
Claire K Sandstrom, Sherif F Osman, Ken F Linnau
While ectopic gas can be a sign of dangerous disease requiring immediate medical or surgical intervention, it can also be an incidental and benign finding. Intravenous gas and spinal vacuum gas are common and almost always benign. Intravascular gas is most often related to instrumentation and, if intraarticular, can cause end-organ ischemia; however, treatment is usually supportive. Pneumocephalus arises from a communication with paranasal sinuses or mastoids more often than from meningeal infection and can usually be managed nonoperatively...
March 2, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28253398/otogenic-temporomandibular-arthritis-in-children
#16
Alice Burgess, Charlotte Celerier, Sylvain Breton, Thierry Van den Abbeele, Natacha Kadlub, Nicolas Leboulanger, Noël Garabedian, Vincent Couloigner
Importance: Septic arthritis of the temporomandibular joint (SATMJ) is a very rare but potentially severe complication of pediatric middle ear infections because it presents risks of TMJ ankylosis. Objective: To describe the clinical, radiological, biological, and microbiological characteristics and evolution of SATMJ complicating middle ear infections (otogenic SATMJ) in children. Design, Setting, and Participants: This multicenter retrospective study included all children younger than 18 years referred between January 1, 2005, and December 31, 2015, for otogenic SATMJ or for TMJ ankylosis that occurred a few months to a few years after an acute mastoiditis...
March 2, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28248604/middle-ear-obliteration-with-blind-sac-closure-of-the-external-auditory-canal-for-spontaneous-csf-otorrhea
#17
Shawn M Stevens, Ryan Crane, Myles L Pensak, Ravi N Samy
Outcome Objectives To (1) identify unique features of patients who underwent middle ear/mastoid obliteration with blind-sac closure of the external auditory canal for spontaneous cerebrospinal fluid (CSF) otorrhea and (2) explore outcomes. Study Design Case series with chart review. Setting Tertiary care center. Subjects and Methods Adults treated for spontaneous cerebrospinal fluid otorrhea from 2007 through 2015 were reviewed and stratified into 2 groups based on the surgery performed: (1) 11 patients underwent middle ear/mastoid obliteration with blind-sac closure of the external auditory canal and (2) 26 patients underwent other procedures...
March 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28244845/incidence-10-year-recidivism-rate-and-prognostic-factors-for-cholesteatoma
#18
A Britze, M L Møller, T Ovesen
OBJECTIVE: Cholesteatoma patients have a high risk of recurrence with complications, and knowledge exchange is a prerequisite for improving treatment. This study aimed to apply appropriate statistics to provide meaningful and transferable results from cholesteatoma surgery, to highlight independent prognostic factors, and to assess the incidence rate. METHODS: Incidence rates were assessed for the district of Aarhus, Denmark. From 147 patients operated on mainly with canal wall up mastoidectomies for debuting cholesteatomas, 10-year Kaplan-Meier recidivism rates were calculated and independent prognostic factors for the recidivism were identified by Cox multivariate regression analyses...
April 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28242132/abducens-nerve-palsy-due-to-inferior-petrosal-sinus-thrombosis
#19
Shivam Om Mittal, Junaid Siddiqui, Bashar Katirji
Isolated unilateral abducens nerve palsy is usually due to ischemia, trauma or neoplasm. Dorello's canal is the space between the petrous apex and superolateral portion of the clivus, bound superiorly by Gruber's ligament. The abducens nerve travels with inferior petrosal sinus (IPS) though the Dorello's canal before entering the cavernous sinus. A 31-year-old man presented with neck pain, and binocular horizontal diplopia, worse looking towards left and at distance. He had a history of intravenous drug abuse but no history of hypertension or diabetes...
February 24, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28239591/role-of-ct-mastoids-in-the-diagnosis-and-surgical-management-of-chronic-inflammatory-ear-diseases
#20
Juveria Majeed, L Sudarshan Reddy
Chronic Suppurative Otitis Media (CSOM) is a chronic inflammation of middle ear cleft. It presents with discharging ear and decreased hearing. The diagnosis is mostly on clinical examination with otoscope or oto endoscope. Computerised Tomography (CT) of mastoids is done to evaluate the extent of the disease and its complication. High resolution CT is now the investigation of choice for temporal bone disease. This study emphasizes on the importance of CT scan in diagnosis of inflammatory ear diseases and most importantly identifying pitfalls or complications which a surgeon can come across during surgery...
March 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
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