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cochlear otosclerosis

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https://www.readbyqxmd.com/read/27642666/the-effect-of-piston-diameter-in-stapedotomy-for-otosclerosis-a-temporal-bone-model
#1
Inge Wegner, Mostafa M A S Eldaebes, Thomas G Landry, Wilko Grolman, Manohar L Bance
HYPOTHESIS: The use of larger-diameter pistons in stapedotomy leads to better hearing outcomes compared with the use of smaller-diameter pistons. There is an interaction between stapes piston diameter and fenestration diameter. BACKGROUND: Otosclerosis can be treated surgically by removing part of the stapes and bypassing the stapes footplate with a prosthesis. Available piston shaft diameters range between 0.3 and 0.8 mm. There has been a tendency toward the use of smaller-diameter pistons, because of a suspected decreased risk of cochlear trauma and subsequent sensorineural hearing loss (SNHL) with smaller pistons...
December 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27551842/are-routine-preoperative-ct-scans-necessary-in-adult-cochlear-implantation-implications-for-the-allocation-of-resources-in-cochlear-implant-programs
#2
Bruno Kenway, Petros V Vlastarakos, Anand V Kasbekar, Patrick R Axon, Neil Donnelly
Our aim was to critically assess the influence of preoperative computed tomography (CT) scans on implantation decisions for adult cochlear implant candidates. The working hypothesis was that these routine scans might not provide critical additional information in most adult cochlear implant candidates. The charts of 175 adults with unilateral cochlear implantation were reviewed. Preoperative CT scan reports were audited, and scans with reported pathology were examined by an Otologist/ENT Surgeon. Clinic notes and multidisciplinary team meeting summaries were also analyzed to assess whether the results of the radiology report had influenced the decision to implant or the laterality of implantation...
August 2016: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/27340982/radiological-imaging-findings-of-patients-with-congenital-totally-hearing-loss
#3
Muhammed Dağkıran, Nermin Dağkıran, Özgür Sürmelioğlu, Tuğsan Ballı, Ülkü Tuncer, Erol Akgül, Fikret Çetik
OBJECTIVE: The aim of this study was to determine and classify inner ear abnormalities in patients who had cochlear implants because of congenital sensorineural hearing loss using preoperative temporal bone computed tomography and magnetic resonance imaging. MATERIALS AND METHODS: Patients in the otolaryngology department who had cochlear implants because of congenital sensorineural hearing loss between January 2011 and December 2013 were included in the study. There were 167 male and 133 female patients, a total of 300...
April 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27329418/stapedotomy-vs-cochlear-implantation-for-advanced-otosclerosis-systematic-review-and-meta-analysis
#4
REVIEW
Yasin Abdurehim, Alexandre Lehmann, Anthony G Zeitouni
OBJECTIVES: To compare the hearing outcomes of stapedotomy vs cochlear implantation in patients with advanced otosclerosis. DATA SOURCES: PubMed, EMBASE, and The Cochrane Library were searched for the terms otosclerosis, stapedotomy, and cochlear implantation and their synonyms with no language restrictions up to March 10, 2015. METHODS: Studies comparing the hearing outcomes of stapedotomy with cochlear implantation and studies comparing the hearing outcomes of primary cochlear implantation with salvage cochlear implantation after an unsuccessful stapedotomy in patients with advanced otosclerosis were included...
November 2016: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/27153329/measurement-of-ototoxicity-following-intracochlear-bisphosphonate-delivery
#5
Woo Seok Kang, Kim Nguyen, Charles E McKenna, William F Sewell, Michael J McKenna, David H Jung
HYPOTHESIS: Assessing the maximum safe dose for local bisphosphonate delivery to the cochlea enables efficient delivery without ototoxicity. BACKGROUND: Otosclerosis is a disease of abnormal bone metabolism affecting the otic capsule, which can cause conductive hearing loss. Larger otosclerotic lesions involving the cochlear endosteum and spiral ligament can result in sensorineural hearing loss. Bisphosphonates are used to treat patients with metabolic bone diseases, including otosclerosis...
July 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27106776/endoscopic-approach-for-cochlear-implantation-in-advanced-otosclerosis-a-case-report
#6
Daniele Marchioni, Davide Soloperto, Luca Bianconi, Maria C Guarnaccia, Elisabetta Genovese, Livio Presutti
HYPOTHESIS: Ossification of the cochlea was once considered to be a contraindication for cochlear implantation. Advances in cochlear implant technology and coding strategies have led to developments in different surgical procedures to manage cochlear ossification. The endoscopic technique allows a direct approach to the round window and the cochlea, especially in remodeled labyrinth, allowing a better vision of scala tympani. BACKGROUND: Tertiary referral ENT center...
April 19, 2016: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/26971342/study-of-the-improvement-in-bone-conduction-threshold-after-stapedectomy
#7
Leire García-Iza, Juan José Navarro, Miren Goiburu, Nuria Pérez, Xabier Altuna
INTRODUCTION AND OBJECTIVES: Bone conduction threshold depression is not always a result of inner ear and cochlear nerve pathology. In fact, middle ear pathologies may be responsible for such threshold depression, as occurs in otosclerosis. The aims of this study were to evaluate the improvement of bone conduction threshold in patients with otosclerosis that underwent stapedectomy and to study the postoperative audiological results. MATERIAL AND METHODS: This was a retrospective study on 95 patients (116 ears) diagnosed with otosclerosis having conductive or mixed hearing loss that received surgery (stapedectomy and complete removal of the footplate) consecutively...
September 2016: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/26915154/the-effect-of-reference-electrode-position-in-cochlear-implants
#8
Angel Ramos Miguel, Angel Ramos Macías, Jaime Viera Artiles, María Teresa Perez Zaballos
OBJECTIVE: This study aims to evaluate the increase in power of cochlear implants (CI) as the reference electrode (RE) position changes. Patients in whom it is necessary to use the full power of the device to achieve the desired stimulation levels, this strategy will ensure that stimulation capability is maximized. MATERIALS AND METHODS: The variability in RE placement in the temporal bone has a measurable effect on the electrical current, impedance, and power consumption, and if the electrode position has a functional effect on the stimulation intensity...
December 2015: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/26859540/intracochlear-drug-delivery-through-the-oval-window-in-fresh-cadaveric-human-temporal-bones
#9
Woo Seok Kang, Kim Nguyen, Charles E McKenna, William F Sewell, Michael J McKenna, David H Jung
HYPOTHESIS: Drug delivered to the oval window can diffuse to the apex of the human cochlea. BACKGROUND: We have previously demonstrated that zoledronate, a nitrogen-containing bisphosphonate, can arrest the sensorineural hearing loss in cochlear otosclerosis. We have also shown that, in animals, delivery of bisphosphonate into the cochlea can dramatically increase delivery efficiency. Intracochlear drug delivery has the potential to increase local concentration of drug while decreasing the risk of systemic toxicity...
March 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/26841857/cochlear-lymph-fluid-signal-increase-in-patients-with-otosclerosis-after-intravenous-administration-of-gadodiamide
#10
Shinji Naganawa, Hisashi Kawai, Toshiaki Taoka, Kojiro Suzuki, Shingo Iwano, Hiroko Satake, Michihiko Sone, Mitsuru Ikeda
PURPOSE: Increased cochlear lymph fluid signals on three-dimensional fluid-attenuated inversion recovery (3D-FLAIR) images obtained several minutes after intravenous administration of a single dose of gadolinium-based contrast agent (IV-SD-GBCA) in a patient with severe retrofenestral type otosclerosis had been reported. This increase was thought to represent breakdown of the blood-labyrinthine barrier. The purpose of this study was to evaluate cochlear lymph signal on heavily T2-weighted 3D-FLAIR (HF) images obtained 4 hours after IV-SD-GBCA in patients with otosclerosis, Ménière's disease, and healthy subjects...
July 11, 2016: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/26747254/3d-flair-sequence-at-3t-in-cochlear-otosclerosis
#11
Francesco Lombardo, Sara De Cori, Gayane Aghakhanyan, Domenico Montanaro, Daniele De Marchi, Francesca Frijia, Susanna Fortunato, Francesca Forli, Dante Chiappino, Stefano Berrettini, Raffaello Canapicchi
PURPOSE: To assess the capability of three-dimensional fluid-attenuated inversion recovery (3D-FLAIR) sequences in detecting signal alterations of the endolabyrinthine fluid in patients with otosclerosis. MATERIALS AND METHODS: 3D-FLAIR before and after (-/+) gadolinium (Gd) administration was added to the standard MR protocol and acquired in 13 patients with a clinical/audiological diagnosis of severe/profound hearing loss in otosclerosis who were candidates for cochlear implantation and in 11 control subjects using 3-T magnetic resonance imaging (MRI) equipment...
October 2016: European Radiology
https://www.readbyqxmd.com/read/26493690/factors-that-influence-outcomes-in-cochlear-implantation-in-adults-based-on-patient-related-characteristics-a-retrospective-study
#12
V J C Kraaijenga, A L Smit, I Stegeman, J J M Smilde, G A van Zanten, W Grolman
OBJECTIVE: Outcomes in speech perception following cochlear implantation in adults vary widely. Many studies have been carried out to identify and quantify factors that influence outcomes. This study adds a new dimension to pre-existing literature. DESIGN: Single-centre retrospective cohort study. SETTING: University Medical Center Utrecht, the Netherlands. PARTICIPANTS: A total of 428 adults with bilateral severe-to-profound sensorineural hearing loss, unilaterally implanted between February 1988 and March 2014...
October 2016: Clinical Otolaryngology
https://www.readbyqxmd.com/read/26360798/utility-of-preoperative-computed-tomography-and-magnetic-resonance-imaging-in-adult-and-pediatric-cochlear-implant-candidates
#13
Matthew Tamplen, Adam Schwalje, Lawrence Lustig, Aurash S Alemi, Mia E Miller
OBJECTIVES/HYPOTHESIS: Determine the utility of preoperative imaging in adult and pediatric cochlear implant candidates. STUDY DESIGN: Retrospective chart review. METHODS: Medical records of 101 consecutive adult and 20 consecutive pediatric patients who underwent 137 cochlear implantation (CI) procedures at a single institution were reviewed. RESULTS: Computed tomography (CT) was obtained preoperatively in 110 (90.9%) patients, preoperative magnetic resonance imaging (MRI) was obtained in 102 (84...
June 2016: Laryngoscope
https://www.readbyqxmd.com/read/26313160/indications-of-cone-beam-ct-in-head-and-neck-imaging
#14
Malene Stutzki, Evelyn Jahns, Magis Matthew Mandapathil, Isabell Diogo, Jochen Alfred Werner, Christian Güldner
CONCLUSION: Cone Beam Computed Tomography (CBCT) can be widely used in imaging of bony structures of the anterior and lateral skull base. Significant differences of applied dosages result from the different protocols of the various indications. OBJECTIVES: CBCT is increasingly being used in head and neck imaging. Until now, no precise knowledge about its dedicated usage existed. METHODS: All CBCT of 2012 and 2013 were analysed with regard to the technical parameters, the performance, and the indication for imaging...
2015: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/26268552/indications-of-cone-beam-ct-in-head-and-neck-imaging
#15
Malene Stutzki, Evelyn Jahns, Magis Matthew Mandapathil, Isabell Diogo, Jochen Alfred Werner, Christian Güldner
CONCLUSION: Cone Beam Computed Tomography (CBCT) can be widely used in imaging of bony structures of the anterior and lateral skull base. Significant differences of applied dosages result from the different protocols of the various indications. OBJECTIVES: CBCT is increasingly being used in head and neck imaging. Until now, no precise knowledge about its dedicated usage existed. METHODS: All CBCT of 2012 and 2013 were analysed with regard to the technical parameters, the performance, and the indication for imaging...
August 12, 2015: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/26234021/history-of-the-surgery-for-otosclerosis-and-cochlear-implants
#16
EDITORIAL
Dragan Dankuc
No abstract text is available yet for this article.
May 2015: Medicinski Pregled
https://www.readbyqxmd.com/read/26185784/mass-and-stiffness-impact-on-the-middle-ear-and-the-cochlear-partition
#17
REVIEW
Jinsook Kim, Miseung Koo
Mass and stiffness affect on the peculiar characteristics of transmission of the middle ear and the distinctive behavior of the cochlear mechanics. Applying the principle of the mass and stiffness, the band-pass characteristic transfer function of the middle ear has been explained. The greatest transfer function of the middle ear, approximately 24-29 dB, is observed at 1-2 kHz in both cat and human species. However, at lower frequencies, the transfer function was disturbed by the stiffness of the middle ear primarily due to middle ear cavity...
April 2015: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/25997672/cochlear-implants-as-a-treatment-option-for-unilateral-hearing-loss-severe-tinnitus-and-hyperacusis
#18
MULTICENTER STUDY
Angel Ramos Macías, Juan Carlos Falcón González, Manuel Manrique, Constantino Morera, Luis García-Ibáñez, Carlos Cenjor, Chrystellel Coudert-Koall, Matthijs Killian
Tinnitus is an incapacitating condition commonly affecting cochlear implant (CI) candidates. The aim of this clinical study is to assess the long-term effects of CI treatment in patients with severe-to-profound, sensorineural, unilateral hearing loss (UHL) and incapacitating tinnitus. We performed a prospective Cochlear™ company-sponsored multicentre study in five Spanish centres. Sixteen patients with UHL and incapacitating tinnitus, which was indicated by a Tinnitus Handicap Inventory (THI) score >58%, received a Nucleus® CI in their deaf ear...
2015: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/25996080/non-ototoxic-local-delivery-of-bisphosphonate-to-the-mammalian-cochlea
#19
Woo Seok Kang, Shuting Sun, Kim Nguyen, Boris Kashemirov, Charles E McKenna, S Adam Hacking, Alicia M Quesnel, William F Sewell, Michael J McKenna, David H Jung
HYPOTHESIS: Local delivery of bisphosphonates results in superior localization of these compounds for the treatment of cochlear otosclerosis, without ototoxicity. BACKGROUND: Otosclerosis is a common disorder of abnormal bone remodeling within the human otic capsule. It is a frequent cause of conductive hearing loss from stapes fixation. Large lesions that penetrate the cochlear endosteum and injure the spiral ligament result in sensorineural hearing loss. Nitrogen-containing bisphosphonates (e...
July 2015: Otology & Neurotology
https://www.readbyqxmd.com/read/25857423/factors-affecting-postoperative-outcome-in-otosclerosis-patients-predictive-role-of-audiological-and-clinical-features
#20
Mayuko Kishimoto, Hiromi Ueda, Yasue Uchida, Michihiko Sone
OBJECTIVE: Factors affecting postoperative hearing results of patients with otosclerosis were analyzed. METHODS: Included were 191 patients with otosclerosis in whom 234 primary stapes surgeries were performed from August 1991 to December 2011 by one surgeon in three tertiary hospitals. Evaluation of factors affecting postoperative hearing thresholds at individual frequencies were performed by logistic regression analysis. RESULTS: Closure of the air-bone gap (ABG) after surgery was good at 2kHz, but poor at 4kHz and frequencies under 1kHz...
October 2015: Auris, Nasus, Larynx
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