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Cochlear implant

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https://www.readbyqxmd.com/read/28527538/masking-release-with-changing-fundamental-frequency-electric-acoustic-stimulation-resembles-normal-hearing-subjects
#1
Alice Barbara Auinger, Dominik Riss, Rudolfs Liepins, Tobias Rader, Tilman Keck, Thomas Keintzel, Alexandra Kaider, Wolf-Dieter Baumgartner, Wolfgang Gstoettner, Christoph Arnoldner
It has been shown that patients with electric acoustic stimulation (EAS) perform better in noisy environments than patients with a cochlear implant (CI). One reason for this could be the preserved access to acoustic low-frequency cues including the fundamental frequency (F0). Therefore, our primary aim was to investigate whether users of EAS experience a release from masking with increasing F0 difference between target talker and masking talker. The study comprised 29 patients and consisted of three groups of subjects: EAS users, CI users and normal-hearing listeners (NH)...
May 11, 2017: Hearing Research
https://www.readbyqxmd.com/read/28526871/electro-tactile-stimulation-enhances-cochlear-implant-speech-recognition-in-noise
#2
Juan Huang, Benjamin Sheffield, Payton Lin, Fan-Gang Zeng
For cochlear implant users, combined electro-acoustic stimulation (EAS) significantly improves the performance. However, there are many more users who do not have any functional residual acoustic hearing at low frequencies. Because tactile sensation also operates in the same low frequencies (<500 Hz) as the acoustic hearing in EAS, we propose electro-tactile stimulation (ETS) to improve cochlear implant performance. In ten cochlear implant users, a tactile aid was applied to the index finger that converted voice fundamental frequency into tactile vibrations...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526091/a-pre-therapeutic-coating-for-medical-devices-that-prevents-the-attachment-of-candida-albicans
#3
Diego Vargas-Blanco, Aung Lynn, Jonah Rosch, Rony Noreldin, Anthony Salerni, Christopher Lambert, Reeta P Rao
BACKGROUND: Hospital acquired fungal infections are defined as "never events"-medical errors that should never have happened. Systemic Candida albicans infections results in 30-50% mortality rates. Typically, adhesion to abiotic medical devices and implants initiates such infections. Efficient adhesion initiates formation of aggressive biofilms that are difficult to treat. Therefore, inhibitors of adhesion are important for drug development and likely to have a broad spectrum efficacy against many fungal pathogens...
May 19, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28523516/pre-operative-screening-and-manual-drilling-strategies-to-reduce-the-risk-of-thermal-injury-during-minimally-invasive-cochlear-implantation-surgery
#4
Neal P Dillon, Loris Fichera, Kyle Kesler, M Geraldine Zuniga, Jason E Mitchell, Robert J Webster, Robert F Labadie
This article presents the development and experimental validation of a methodology to reduce the risk of thermal injury to the facial nerve during minimally invasive cochlear implantation surgery. The first step in this methodology is a pre-operative screening process, in which medical imaging is used to identify those patients that present a significant risk of developing high temperatures at the facial nerve during the drilling phase of the procedure. Such a risk is calculated based on the density of the bone along the drilling path and the thermal conductance between the drilling path and the nerve, and provides a criterion to exclude high-risk patients from receiving the minimally invasive procedure...
May 18, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28521543/word-learning-performance-of-children-with-and-without-cochlear-implants-given-synchronous-and-asynchronous-cues
#5
Emily Lund, C Melanie Schuele
This study sought to evaluate the effects of synchronous and asynchronous auditory-visual cues on the word-learning performance of children with cochlear implants and children with normal hearing matched for chronological age. Children with cochlear implants (n = 9) who had worn the implant for less than one year and children matched for chronological age (n = 9) participated in rapid word-learning trials. Children with cochlear implants did not learn words in either the synchronous or asynchronous condition (U = 49...
May 19, 2017: Clinical Linguistics & Phonetics
https://www.readbyqxmd.com/read/28516192/the-value-of-gesell-score-in-predicting-the-outcome-of-cochlear-implantation-in-children
#6
Yang Yang, Liu Haihong, Zheng Jun, Chen Min, Li Ying, Hao Jinsheng, Liu Wei, Zhang Jie, Ni Xin
The purpose is to determine the value of preoperative evaluation on developmental levels using Gesell score in predicting the postoperative outcome in pediatric cochlear implantation (CI) recipients. 78 children who underwent CI were included in our study. Age at the time of CI ranged from 6 to 67 months. The Gesell score including adaptability, fine motor, gross motor, language, and social skill was used for evaluating the patients' developmental levels before the CI, and a developmental quotient (DQ) was calculated by the following formula: (developmental age/actual age) × 100...
May 17, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28509597/use-of-technological-aids-and-interpretation-services-among-children-and-adults-with-hearing-loss
#7
Jesper Dammeyer, Christine Lehane, Marc Marschark
OBJECTIVES: The technological development of communication aids for people with hearing loss has progressed rapidly over the last decades. Quality has improved and the number of different types of aids has increased. However, few studies have examined the prevalence of technology use and interpreting services use among people with hearing loss as they relate to demographic characteristics of this population. DESIGN: This study reports from national surveys of children and adults with hearing loss...
May 16, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28508720/human-kinematics-of-cochlear-implant-surgery-an-investigation-of-insertion-micro-motions-and-speed-limitations
#8
Kyle Kesler, Neal P Dillon, Loris Fichera, Robert F Labadie
Objectives Document human motions associated with cochlear implant electrode insertion at different speeds and determine the lower limit of continuous insertion speed by a human. Study Design Observational. Setting Academic medical center. Subjects and Methods Cochlear implant forceps were coupled to a frame containing reflective fiducials, which enabled optical tracking of the forceps' tip position in real time. Otolaryngologists (n = 14) performed mock electrode insertions at different speeds based on recommendations from the literature: "fast" (96 mm/min), "stable" (as slow as possible without stopping), and "slow" (15 mm/min)...
May 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28507614/functional-pattern-of-increasing-concentrations-of-brain-derived-neurotrophic-factor-in-spiral-ganglion-implications-for-research-on-cochlear-implants
#9
Emina Ramku, Refik Ramku, Dugagjin Spanca, Valbona Zhjeqi
BACKGROUND: As previously various studies have suggested application of brain-derived neurotrophic factor (BDNF) may be considered as a promising future therapy for hearing deficits, in particular for the improvement of cochlear neurone loss during cochlear implantation. AIM: The present study's aim was to establish the upper threshold of the concentration of BDNF in Naval Medical Research Institute (NMRI) mice spiral ganglion outgrowth. METHODS: Spiral ganglion explants were prepared from post-natal day 4 (p4) (NMRI) mice of both sexes under the approval and guidelines of the regional council of Hearing Research Institute Tubingen...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28506442/boosting-syntax-training-with-temporally-regular-musical-primes-in-children-with-cochlear-implants
#10
N Bedoin, A-M Besombes, E Escande, A Dumont, P Lalitte, B Tillmann
OBJECTIVES: Previous research has suggested the use of rhythmic structures (implemented in musical material) to improve linguistic structure processing (i.e., syntax processing), in particular for populations showing deficits in syntax and temporal processing (e.g., children with developmental language disorders). The present study proposes a long-term training program to improve syntax processing in children with cochlear implants, a population showing syntax processing deficits in perception and production...
May 11, 2017: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28505158/investigation-of-the-effect-of-cochlear-implant-electrode-length-on-speech-comprehension-in-quiet-and-noise-compared-with-the-results-with-users-of-electro-acoustic-stimulation-a-retrospective-analysis
#11
Andreas Büchner, Angelika Illg, Omid Majdani, Thomas Lenarz
OBJECTIVES: This investigation evaluated the effect of cochlear implant (CI) electrode length on speech comprehension in quiet and noise and compare the results with those of EAS users. METHODES: 91 adults with some degree of residual hearing were implanted with a FLEX20, FLEX24, or FLEX28 electrode. Some subjects were postoperative electric-acoustic-stimulation (EAS) users; the other subjects were in the groups of electric stimulation-only (ES-only). Speech perception was tested in quiet and noise at 3 and 6 months of ES or EAS use...
2017: PloS One
https://www.readbyqxmd.com/read/28502273/modiolar-ossification-in-paediatric-patients-with-auditory-neuropathy
#12
L Wang, Z Wang, F Gao, K A Peng
OBJECTIVE: To describe our finding of increased ossification of the modiolus in paediatric patients with auditory neuropathy who met criteria for cochlear implantation. METHODS: A retrospective case series with a comparison group at a tertiary referral centre is described. Seven paediatric patients with auditory neuropathy who met criteria for and underwent cochlear implantation were identified. Fifteen paediatric implantees with bilateral profound sensorineural hearing loss were included as the comparison group...
May 15, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28499302/-virtual-planning-of-prosthetic-treatment-of-the-orbit
#13
Johannes A Veit, Julia Thierauf, Kornelius Egner, Severin Wiggenhauser, Daniel Friedrich, Jens Greve, Patrick J Schuler, Thomas K Hoffmann, Alexander Schramm
Optimal positioning of bone-anchored implants in the treatment of patients with orbital prosthesis is challenging. The definition of implant axis as well as the positioning of the implants is important to prevent failures in prosthetic rehabilitation in these patients. We performed virtual planning of enossal implants at a base of a standard fan beam CT scan using the software CoDiagnostiX™ (DentalWings, Montréal, Canada). By 3D-printing a surgical guide for drilling and implant insertion was manufactured (Med-610™, Stratasys, Rehovot, Israel)...
May 12, 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28499298/-cochlear-implant-state-of-the-art
#14
Thomas Lenarz
Cochlear implants are the treatment of choice for the auditory rehabilitation of patients with sensory deafness. They restore the missing function of inner hair cells by transforming the acoustic signal into electrical stimuli for activation of auditory nerve fibers. Due to the very fast technology development cochlear implants provide open-set speech understanding in the majority of patients including the use of the telephone. Children can achieve a near to normal speech and language development provided their deafness is detected early after onset and implantation is performed quickly thereafter...
April 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28499296/-implantable-hearing-devices
#15
Matthias Tisch
Combined hearing loss is an essential indication for implantable hearing systems. Depending on the bone conduction threshold, various options are available: Patients with mild sensorineural deafness usually benefit from transcutaneous BCI, while percutaneous BCI systems are recommended also for moderate hearing loss. For combined hearing loss with moderate and high-grade cochlear hearing loss, active middle ear implants are recommended. For patients with incompatibilities or middle ear surgery, implants are a valuable and proven addition to the therapeutic options...
April 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28498488/slotted-labyrinthotomy-approach-with-customized-electrode-for-patients-with-common-cavity-deformity
#16
Xingmei Wei, Yongxin Li, Qian-Jie Fu, Yue Gong, Biao Chen, Jingyuan Chen, Ying Shi, Qiaotong Su, Danmo Cui, Ting Liu
OBJECTIVES/HYPOTHESIS: Cochlear implantation for patients with common cavity deformity (CCD) can be difficult, with a higher incidence of intra- and postoperative complications; outcomes with CCD patients are also highly variable. In this study, surgical time was compared between the traditional facial recess approach (TFRA) and the transmastoid slotted labyrinthotomy approach (TSLA). Audiological outcomes and the benefit of using customized electrode arrays for CCD patients are also discussed...
May 12, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28498272/paget-s-disease-of-the-temporal-bone-a-single-institution-contemporary-review-of-27-patients
#17
Nicholas L Deep, Jake G Besch-Stokes, John I Lane, Colin L W Driscoll, Matthew L Carlson
OBJECTIVES: To report a contemporary review from a single-institution series on Paget's disease of the temporal bone (PDTB). STUDY DESIGN: Retrospective chart review of patients evaluated from 1998 to 2016. SETTING: Quaternary referral center. PATIENTS: Patients with radiographically confirmed PDTB. MAIN OUTCOME MEASURES: Clinical, audiological, and radiological features and management strategies of PDTB...
May 11, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28498269/real-time-intracochlear-electrocochleography-obtained-directly-through-a-cochlear-implant
#18
Michael S Harris, William Jason Riggs, Kanthaiah Koka, Leonid M Litvak, Prashant Malhotra, Aaron C Moberly, Brendan P O'Connell, Jourdan Holder, Federico Alberto Di Lella, Carlos Mario Boccio, George B Wanna, Robert F Labadie, Oliver F Adunka
HYPOTHESIS: Utilizing the cochlear implant to record electrophysiologic responses during device placement is a feasible and efficacious technique for monitoring near real-time cochlear physiology during and following electrode insertion. BACKGROUND: Minimizing intracochlear trauma during cochlear implantation has emerged as a highly researched area to help improve patient performance. Currently, conventional cochlear implant technology allows for the recording of electrically evoked compound action potentials (eCAPs)...
May 11, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28498265/the-effect-of-systemic-steroid-on-hearing-preservation-after-cochlear-implantation-via-round-window-approach-a-guinea-pig-model
#19
Mun Young Chang, Yoon Chan Rah, Jun Jae Choi, Shin Wook Woo, Yu-Jung Hwang, Hayden Eastwood, Stephen J O'Leary, Jun Ho Lee
HYPOTHESIS: When administered perioperatively, systemic dexamethasone will reduce the hearing loss associated with cochlear implantation (CI) performed via the round window approach. BACKGROUND: The benefits of electroacoustic stimulation have led to interest in pharmacological interventions to preserve hearing after CI. METHODS: Thirty guinea pigs were randomly divided into three experimental groups: a control group; a 3-day infusion group; and a 7-day infusion group...
May 11, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28498264/defining-the-hook-region-anatomy-of-the-guinea-pig-cochlea-for-modeling-of-inner-ear-surgery
#20
Jonathon Lo, Phillip Sale, Sudanthi Wijewickrema, Luke Campbell, Hayden Eastwood, Stephen John O'leary
HYPOTHESIS: The aim of this study was to describe the hook region anatomy of the guinea pig cochlea to identify the optimal surgical approach for cochlear implantation and to determine what anatomical structures are at risk. BACKGROUND: Animal studies investigating hearing loss after cochlear implantation surgery are currently constrained by the lack of a reproducible implantation model. METHODS: Guinea pig cochleae were imaged using thin-sheet laser imaging microscopy...
May 11, 2017: Otology & Neurotology
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