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Cochlear Implants International

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https://www.readbyqxmd.com/read/29877144/peri-operative-electrically-evoked-auditory-brainstem-response-assessment-of-facial-nerve-cochlea-interaction-at-cochlear-implantation
#1
Nadine Schart-Morén, Karin Hallin, Sumit K Agrawal, Hanif M Ladak, Per-Olof Eriksson, Hao Li, Helge Rask-Andersen
OBJECTIVES: Dehiscence between the cochlear otic capsule and the facial nerve canal is a rare and relatively newly described pathology. In cochlear implantation (CI), this dehiscence may lead to adverse electric facial nerve stimulation (FNS) already at low levels, rendering its use impossible. Here, we describe an assessment technique to foresee this complication. METHODS: Pre- and postoperative computed tomography (CT) scans and intraoperative electrically evoked auditory brainstem response (e-ABR) measurements were analyzed in two patients with cochlear-facial dehiscence (CFD)...
June 7, 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29843587/changes-in-sound-source-localization-for-children-with-bilateral-severe-to-profound-hearing-loss-following-simultaneous-bilateral-cochlear-implantation
#2
Catherine F Killan, Sally Harman, Edward C Killan
BACKGROUND: Sound localization is a valuable skill that children can develop to some extent via bilateral cochlear implants (biCIs). However, little is known regarding the change that can be expected in sound-source localization accuracy (SLA) pre- and post-biCI for children with bilateral, severe-to-profound hearing impairment who spent their early years listening via bilateral hearing aids (biHAs). This study therefore aimed to prospectively assess SLA in a group of children before, and at one year after, receiving simultaneous biCIs...
May 29, 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29772954/electric-acoustic-stimulation-suppresses-tinnitus-in-a-subject-with-high-frequency-single-sided-deafness
#3
Griet Mertens, Vincent Van Rompaey, Paul Van de Heyning
BACKGROUND: A suggested solution to suppress tinnitus is to restore the normal sensory input. This is based on the auditory deprivation hypothesis. It is known that hearing aids can provide sufficient activation of the auditory nervous system and reduce tinnitus in subjects with mild to moderate hearing loss and that cochlear implantation can reduce tinnitus in subjects with severe to profound hearing loss. This applies to subjects with single-sided deafness (SSD) or bilateral hearing loss...
May 17, 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29658405/real-time-intracochlear-imaging-of-automated-cochlear-implant-insertions-in-whole-decalcified-cadaver-cochleas-using-ultrasound
#4
Thomas G Landry, Guy Earle, Jeremy A Brown, Manohar L Bance
OBJECTIVES: This study aimed to determine the feasibility of combining high-frequency ultrasound imaging, automated insertion, and force sensing to yield more information about cochlear implant insertion dynamics. METHODS: An apparatus was developed combining these aspects along with software to control implant and imaging probe positions. Decalcified unfixed human cochleas were implanted at various speeds, insertion sites, and implant models while imaging near the implant tip throughout insertion and recording force data from the cochlea mounting stage...
April 16, 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29631499/cochlear-helix-and-duct-length-identification-evaluation-of-different-curve-fitting-techniques
#5
Daniel Schurzig, Max Eike Timm, G Jakob Lexow, Omid Majdani, Thomas Lenarz, Thomas S Rau
OBJECTIVE: Within the field of cochlear implantation (CIs), the role of utilizing patient-specific cochlear anatomy for choosing the optimal implant electrode is becoming increasingly important. Unfortunately, performing detailed anatomical measurements of a cochlea using clinical imaging data is rather time consuming and hence difficult to implement into the clinical routine. In order to accelerate clinical cochlear anatomy evaluations, previously developed mathematical models can be adjusted to the patient-specific anatomy by measuring just a few overall cochlear dimensions...
April 9, 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29577849/facial-nerve-stimulation-after-cochlear-implantation-our-experience-in-448-adult-patients
#6
Joana Sanches Pires, Ana Sofia Melo, Ricardo Caiado, Jorge Humberto Martins, João Elói Moura, Luís Filipe Silva
Facial nerve stimulation (FNS) after cochlear implant activation is a well-known side effect, with an incidence rate raging between 1% and 14.9%. Some causes of deafness have been associated with a higher incidence of this entity, however, there is still no consensus regarding its pathophysiological mechanisms. Although FNS can be solved with changes in speech processor programming, in some cases this can lead to a decrease in performance. The aim of this work was to review the epidemiologic, clinical aspects, and performance results in a group of FNS after cochlear implantation...
July 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29577839/single-sided-deaf-tactical-unit-officer-treated-with-cochlear-implantation
#7
Jean-Michel Bourque, Nicolas Rouleau, Mathieu Côté, Daniel Philippon, Richard Bussières
OBJECTIVES: To demonstrate the efficacy of cochlear implantation for management of a severe single-sided deaf tactical unit officer. Showing that hearing improvement provided by cochlear implantation was sufficient for him to return to work as a police tactical officer. METHODS: Case report. RESULTS: A 43 years-old man working as a tactical unit officer suffered from a work-related severe single-sided hearing loss. He tried unsuccessfully many types of hearing aids including a contralateral routing of sound (CROS) system and a bone conduction hearing aid with a headband...
July 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29566583/benefits-of-upgrading-to-the-nucleus-%C3%A2-6-sound-processor-for-a-wider-clinical-population
#8
Michelle J Todorov, Karyn L Galvin
OBJECTIVES: To determine whether a large clinical group of cochlear implant (CI) recipients demonstrated a difference in sentence recognition in noise when using their pre-upgrade sound processor compared to when using the Nucleus 6 processor, and to examine the impact of the following factors: implant type, sound processor type, age, or onset of hearing loss. METHODS: A file review of 154 CI recipients (aged 7-92 years old) who requested an upgrade to the Nucleus 6 sound processor at the Cochlear Care Centre Melbourne was conducted...
July 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29564963/development-and-validation-of-the-nottingham-auditory-milestones-names-profile-for-deaf-children-under-2-years-old-using-cochlear-implants
#9
Gill Datta, Pádraig T Kitterick, Jayne Ramirez-Inscoe
OBJECTIVES: Clinicians face considerable challenges in setting appropriate auditory goals for babies and young children who receive cochlear implants. This paper describes the rationale, organization, implementation, and validation of the Nottingham Auditory Milestones profile that was developed to address these challenges. METHODS: The use of the profile has been fully integrated into the postoperative pathway at the Nottingham Auditory Implant Programme since 2009...
July 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29508662/a-potential-neurophysiological-correlate-of-electric-acoustic-pitch-matching-in-adult-cochlear-implant-users-pilot-data
#10
Chin-Tuan Tan, Brett A Martin, Mario A Svirsky
The overall goal of this study was to identify an objective physiological correlate of electric-acoustic pitch matching in unilaterally implanted cochlear implant (CI) participants with residual hearing in the non-implanted ear. Electrical and acoustic stimuli were presented in a continuously alternating fashion across ears. The acoustic stimulus and the electrical stimulus were either matched or mismatched in pitch. Auditory evoked potentials were obtained from nine CI users. Results indicated that N1 latency was stimulus-dependent, decreasing when the acoustic frequency of the tone presented to the non-implanted ear was increased...
July 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29363410/intra-cochlear-electrode-tip-fold-over
#11
Dalal Sabban, Marine Parodi, Marion Blanchard, Veronique Ettienne, Isabelle Rouillon, Natalie Loundon
Cochlear implantation has been performed safely for over two decades but still has various minor and major complications. We report two cases of an unusual complication of electrode implantation: tip fold-over of the electrode array within the cochlea. Both cases required undergoing explantation and re-implantation. The frequent use of fine and pre-curved electrodes particularly with the use of an insertion tool necessitates routine postoperative radiological evaluation of the electrode array. Our cases demonstrate the benefit of systematic imaging including the possible use of the Cone Beam CT intraoperatively...
July 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29457564/investigating-speech-recognition-and-listening-effort-with-different-device-configurations-in-adult-cochlear-implant-users
#12
Douglas P Sladen, Yingjiu Nie, Katelyn Berg
OBJECTIVES: The purpose of this study was to investigate speech recognition in noise and listening effort among a group of adults with cochlear implants (CIs). Two main research questions were addressed. First, what are the effects of omni versus directional microphone configuration on speech recognition and listening effort for noisy conditions? Second, what is the effect of unilateral versus bimodal or bilateral CI listening on speech recognition and listening effort in noisy conditions? DESIGN: Sixteen adults (mean age 58 years) with CIs participated...
May 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29457563/novel-use-of-the-cochlear-%C3%A2-hybrid-ci24reh-cochlear-implant
#13
Yahya Atiya, Mohamed Razwi Ahmed, Dani Schlesinger-Michelow
Cochlear implantation is becoming more widespread. From its early days to date, huge strides have been made in the technology and surgical technique. However, one challenge remains: implanting malformed or abnormal cochleae. Even more challenging is a cochlea that appears normal at first glance, but is not. We present a case of a child with chondrodysplasia punctata, who had apparently morphologically normal inner ears, but with one major obstacle: the cochlea was smaller than normal in all dimensions. To the best of our knowledge, this is the first case described, and the solution is a novel one as well...
May 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29457562/quality-of-life-outcomes-in-cochlear-implantation-of-children-with-profound-and-multiple-learning-disability
#14
Richard Benjamin Speaker, Jennifer Roberston, Cristina Simoes-Franklin, Fergal Glynn, Peter Walshe, Laura Viani
This study was performed to investigate the effect of cochlear implantation on the Quality of Life (QoL) of children with profound and multiple learning disability (PMLD). This cohort of children has been viewed historically as poor candidates for cochlear implantation as they generally have poor speech and hearing outcomes. The Irish National Cochlear Implant Program's prospectively maintained database was examined for all children implanted from July 1996 to July 2015. All charts of the 381 children implanted during this time were reviewed retrospectively; 16 children met criteria for being PMLD...
May 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29347892/pilot-study-on-the-use-of-data-mining-to-identify-cochlear-implant-candidates
#15
Jedidiah J Grisel, Erin Schafer, Anne Lam, Terry Griffin
OBJECTIVES: The goal of this pilot study was to determine the clinical utility of data-mining software that screens for cochlear implant (CI) candidacy. METHODS: The Auditory Implant Initiative developed a software module that screens for CI candidates via integration with a software system (Noah 4) that serves as a depository for hearing test data. To identify candidates, patient audiograms from one practice were exported into the screening module. Candidates were tracked to determine if any eventually underwent implantation...
May 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29299970/inconsistent-device-use-in-pediatric-cochlear-implant-users-prevalence-and-risk-factors
#16
Kathryn B Wiseman, Andrea D Warner-Czyz
OBJECTIVES: Cochlear implants (CIs) afford an opportunity for children with a significant hearing loss to access spoken language through auditory input, but challenges post-implantation could impede success. Inconsistent device use occurs when a child wears their device less than full-time (<8 hours per day). Previous studies may underestimate the prevalence of inconsistent device use in pediatric CI users due to methodological issues (subjective parent report vs. objective measures)...
May 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29291688/comparing-esrt-and-ecap-measurements-in-pediatric-med-el-cochlear-implant-users
#17
Julie Kosaner, Philipp Spitzer, Svetlana Bayguzina, Muammer Gultekin, Laurie Arum Behar
INTRODUCTION: Electrically evoked compound action potentials (eCAP) and electrically evoked stapedius reflexes are the most frequently used objective measurements for programming a cochlear implant (CI) audio processor. Objective methods are particularly beneficial for children and CI users that encounter difficulties in providing feedback. In this study, we compared the threshold and the slope of the eCAP amplitude growth function with the electrically evoked stapedius reflex threshold (eSRT) in pediatric CI users...
May 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29188758/utility-of-intraoperative-computed-tomography-for-cochlear-implantation-in-patients-with-difficult-anatomy
#18
Christine S Kim, Alice Z Maxfield, David Foyt, Robert J Rapoport
OBJECTIVE AND IMPORTANCE: To describe cases that illustrate the utility of intraoperative computed tomography (CT) in cochlear implantation of patients with difficult temporal bone anatomy. CLINICAL PRESENTATION: A 2-year-old male with congenital X-linked stapes gusher syndrome and a 2-year-old female with enlarged vestibular aqueduct underwent successful cochlear implantation with the help of intraoperative CT. In the latter case, the initial intraoperative C-arm fluoroscopy suggested malposition of the electrode, however, was not able to provide details for adjustments...
May 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29291687/perceived-improvements-and-challenges-following-sequential-bilateral-cochlear-implantation-in-children-and-adults
#19
Mary Pat Moeller, Lisa J Stille, Michelle L Hughes, Rodney P Lusk
OBJECTIVE: Semi-structured interviews were conducted with sequentially implanted bilateral cochlear-implant (biCI) recipients to examine functional aspects of communication that are affected by listening with one versus two CIs. DESIGN: Participants were 15 adult biCI recipients and parents of 30 children (categorized into three groups by age) with biCIs. All CI users had sequential placement of biCIs with at least six months' experience with the first CI before activation of the second device, and at least three months' experience with both CIs prior to the interview...
March 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29214896/outcome-evaluation-on-cochlear-implant-users-with-residual-hearing
#20
Nicole Neben, Andreas Buechner, Mark Schuessler, Thomas Lenarz
OBJECTIVES: The performance outcome with Freedom™ Hybrid™ versus the CP900 series sound processor with Hybrid Hearing was investigated. In addition, a preliminary evaluation was conducted to consider the feasibility of upgrading experienced electric-only cochlear implant (CI) users who had substantial residual hearing to Hybrid Hearing. METHODS: This study was a single-centre prospective, non-inferiority design with repeated measures conducted at Hannover Medical School (MHH)...
March 2018: Cochlear Implants International
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