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https://www.readbyqxmd.com/read/29148288/cochlear-volume-as-a-predictive-factor-for-residual-hearing-preservation-after-conventional-cochlear-implantation
#1
Masahiro Takahashi, Yasuhiro Arai, Naoko Sakuma, Kenichiro Yabuki, Daisuke Sano, Goshi Nishimura, Nobuhiko Oridate, Shin-Ichi Usami
OBJECTIVE: The preservation of residual hearing after conventional cochlear implantation (CI) is frequently observed when atraumatic soft surgery is adopted. The purpose of this study was to elucidate the predictive factors for residual hearing preservation after atraumatic CI. PATIENTS: This study included 46 patients who underwent CI based on an atraumatic technique using a standard-length flexible electrode implant through a round window approach. MAIN OUTCOME MEASURE: Cochlear volume was measured using magnetic resonance imaging (MRI)...
November 17, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29140966/how-was-your-otology-training-a-survey-of-recent-otolaryngology-residents
#2
Phillip Montague, Donald Bennett, Brian Kellermeyer
OBJECTIVE: To survey graduating residents or recent graduates of otolaryngology residency programs to evaluate their Otology/Neurotology (ON) experience in residency and discern if they had received adequate training in time to decide whether to pursue a fellowship in Otology or Neurotology. STUDY DESIGN: Internet-based survey. METHODS: A survey was distributed to all US otolaryngology residency programs to distribute to 5th year residents and recent graduates in last 4 years...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29135879/cochlear-implantation-in-children-with-congenital-unilateral-deafness-a-case-series
#3
Rainer Linus Beck, Antje Aschendorff, Frederike Hassepaß, Thomas Wesarg, Stefanie Kröger, Till F Jakob, Susan Arndt
OBJECTIVES: Cochlear implant is regarded as a treatment option for hearing rehabilitation of adults with unilateral sensorineural hearing loss. A clear benefit has been experienced in regard to speech comprehension in noise, localization, and quality of life. The aim of this study was to investigate the benefit of cochlear implantation for children with congenital unilateral hearing loss. STUDY DESIGN: Retrospective case series. SETTING: Tertiary referral center; cochlear implant program...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29135878/single-sided-deafness-impact-of-cochlear-implantation-on-speech-perception-in-complex-noise-and-on-auditory-localization-accuracy
#4
Julia Döge, Uwe Baumann, Tobias Weissgerber, Tobias Rader
OBJECTIVE: To assess auditory localization accuracy and speech reception threshold (SRT) in complex noise conditions in adult patients with acquired single-sided deafness, after intervention with a cochlear implant (CI) in the deaf ear. STUDY DESIGN: Nonrandomized, open, prospective patient series. SETTING: Tertiary referral university hospital. PATIENTS: Eleven patients with late-onset single-sided deafness (SSD) and normal hearing in the unaffected ear, who received a CI...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29135877/evaluation-of-cochlear-implant-receiver-position-and-its-temporal-changes
#5
Gloria Grupe, Grit Rademacher, Solvig Hofmann, Andreas Stratmann, Philipp Mittmann, Sven Mutze, Arneborg Ernst, Ingo Todt
HYPOTHESIS: It was the aim of this study to establish normative data regarding intended changes in cochlear implants (CI) receiver positioning by one surgeon over time. BACKGROUND: With the increasing number of CI patients, the probability of needing magnetic resonance imaging (MRI) increases. The accessibility of cerebral structures is limited by MRI artifacts caused by CI. New studies show a dependence of the visibility of intracranial structures by the MRI sequences and the position of the CI receiver itself...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29135876/effectiveness-of-directional-microphones-in-bilateral-bimodal-cochlear-implant-users-impact-of-spatial-and-temporal-noise-characteristics
#6
Tobias Weissgerber, Tobias Rader, Uwe Baumann
OBJECTIVE: To measure speech reception thresholds (SRTs) in co-located (S0N0) and diffuse noise conditions (multi-source noise field, MSNF) and to assess the impact of beamforming algorithms in MSNF in cochlear implant (CI) users. STUDY DESIGN: Non-randomized, open, prospective study. SETTING: Tertiary referral cochlear implantation center. PATIENTS: Participants included 14 CI users (7 bimodal, 7 bilateral) and 14 normal hearing young adults...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29135872/the-role-of-auditory-evoked-potentials-in-the-context-of-cochlear-implant-provision
#7
Sebastian Hoth, Oliver Christian Dziemba
: Auditory evoked potentials (AEP) are highly demanded during the whole process of equipping patients with cochlear implants (CI). They play an essential role in preoperative diagnostics, intraoperative testing, and postoperative monitoring of auditory performance and success. The versatility of AEP's is essentially enhanced by their property to be evokable by acoustic as well as electric stimuli. Thus, the electric responses of the auditory system following acoustic stimulation and recorded by the conventional surface technique as well as by transtympanic derivation from the promontory (Electrocochleography [ECochG]) are used for the quantitative determination of hearing loss and, additionally, electrically evoked compound actions potentials (ECAP) can be recorded with the intracochlear electrodes of the implant just adjacent to the stimulation electrode to check the functional integrity of the device and its coupling to the auditory system...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29135866/importance-of-perimodiolar-electrode-position-for-psychoacoustic-discrimination-in-cochlear-implantation
#8
Angel Ramos Macias, Maria Teresa Perez Zaballos, Angel Ramos de Miguel, Javier Cervera Paz
HYPOTHESIS: Modiolar proximity of the cochlear implant electrodes and low impedance values have a positive effect on electrical pitch discrimination. BACKGROUND: The proximity of the cochlear electrode to the modiolar wall can determine changes in tissue and fluid environment. With the onset of soft-surgery techniques, the trauma caused during surgery has been reduced, minimizing fibrous growth. METHODS: Computed tomography-scan measurements of electrode-inner wall distance and psychoacoustic electrode discrimination tests were done...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29135865/electrode-impedance-fluctuations-as-a-biomarker-for-inner-ear-pathology-after-cochlear-implantation
#9
June Choi, Matthew R Payne, Luke J Campbell, Christo W Bester, Carrie Newbold, Hayden Eastwood, Stephen J O'Leary
OBJECTIVES/HYPOTHESIS: Cochlear implant surgery now aims to preserve residual low frequency hearing. The current research explores whether fluctuations in the electrical impedance of cochlear implant electrodes may act as a biomarker for pathological changes that lead to the delayed loss of residual hearing. STUDY DESIGN: Secondary analysis of a double-blinded randomized trial, where methylprednisolone was administered intravenously before cochlear implantation with a view to preserving residual hearing...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29133013/the-optimal-inter-implant-interval-in-pediatric-sequential-bilateral-implantation
#10
Angelika Illg, Carolin Sandner, Andreas Büchner, Thomas Lenarz, Andrej Kral, Anke Lesinski-Schiedat
An increasing number of children receive bilateral cochlear implants (CIs) sequentially. Outcomes of bilateral implantation show high variability. This retrospective analysis investigates the optimal inter-implant interval. For this purpose, speech comprehension results of 250 children who underwent sequential bilateral cochlear implantation were evaluated. All individuals underwent periodic speech perception testing in quiet and noise. The most recent unilateral data for each side were statistically analyzed...
October 31, 2017: Hearing Research
https://www.readbyqxmd.com/read/29131113/speech-production-quality-of-cochlear-implant-users-with-respect-to-duration-and-onset-of-hearing-loss
#11
Suzan Ruff, Tobias Bocklet, Elmar Nöth, Joachim Müller, Eva Hoster, Maria Schuster
PURPOSE: To assess whether postlingual onset and shorter duration of deafness before cochlear implant (CI) provision predict higher speech intelligibility results of CI users. METHODS: For an objective judgement of speech intelligibility, we used an automatic speech recognition system computing the word recognition rate (WR) of 50 adult CI users and 50 age-matched control individuals. All subjects were recorded reading a standardized text. Subjects were divided into three groups: pre- or perilingual deafness (A), both >2 years before implantation, postlingual deafness <2 years before implantation (B), or postlingual deafness >2 years before implantation (C)...
November 9, 2017: ORL; Journal for Oto-rhino-laryngology and its related Specialties
https://www.readbyqxmd.com/read/29130439/cochlear-implantation-in-children-with-postlingual-progressive-steeply-sloping-high-frequency-hearing-loss
#12
Margaret A Meredith, Jay T Rubinstein, Kathleen C Y Sie, Susan J Norton
BACKGROUND: Children with steeply sloping sensorineural hearing loss (SNHL) lack access to critical high-frequency cues despite the use of advanced hearing aid technology. In addition, their auditory-only aided speech perception abilities often meet Food and Drug Administration criteria for cochlear implantation. PURPOSE: The objective of this study was to describe hearing preservation and speech perception outcomes in a group of young children with steeply sloping SNHL who received a cochlear implant (CI)...
November 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/29130438/segmental-and-suprasegmental-perception-in-children-using-hearing-aids
#13
Kaitlyn A Wenrich, Lisa S Davidson, Rosalie M Uchanski
BACKGROUND: Suprasegmental perception (perception of stress, intonation, "how something is said" and "who says it") and segmental speech perception (perception of individual phonemes or perception of "what is said") are perceptual abilities that provide the foundation for the development of spoken language and effective communication. While there are numerous studies examining segmental perception in children with hearing aids (HAs), there are far fewer studies examining suprasegmental perception, especially for children with greater degrees of residual hearing...
November 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/29129834/the-relationship-between-cochlear-implants-and-deaf-identity
#14
Madeleine Chapman, Jesper Dammeyer
The degree to which individuals with cochlear implants (CIs) experience communication difficulties has implications for social participation and identity development. However, few studies have examined the relationship between cochlear implantation, identity, and social participation. Using data from a Danish national survey of deaf adults, the authors examined the significance of having (or not having) a CI in regard to identity (categorized as deaf, hearing, bicultural, and marginal) and various related factors concerning social participation and experiences of being deaf...
2017: American Annals of the Deaf
https://www.readbyqxmd.com/read/29126650/plasticity-in-the-auditory-system
#15
REVIEW
Dexter R F Irvine
Over the last 30 years a wide range of manipulations of auditory input and experience have been shown to result in plasticity in auditory cortical and subcortical structures. The time course of plasticity ranges from very rapid stimulus-specific adaptation to longer-term changes associated with, for example, partial hearing loss or perceptual learning. Evidence for plasticity as a consequence of these and a range of other manipulations of auditory input and/or its significance is reviewed, with an emphasis on plasticity in adults and in the auditory cortex...
October 31, 2017: Hearing Research
https://www.readbyqxmd.com/read/29123468/a-model-based-approach-for-separating-the-cochlear-microphonic-from-the-auditory-nerve-neurophonic-in-the-ongoing-response-using-electrocochleography
#16
Tatyana E Fontenot, Christopher K Giardina, Douglas C Fitzpatrick
Electrocochleography (ECochG) is a potential clinically valuable technique for predicting speech perception outcomes in cochlear implant (CI) recipients, among other uses. Current analysis is limited by an inability to quantify hair cell and neural contributions which are mixed in the ongoing part of the response to low frequency tones. Here, we used a model based on source properties to account for recorded waveform shapes and to separate the combined signal into its components. The model for the cochlear microphonic (CM) was a sinusoid with parameters for independent saturation of the peaks and the troughs of the responses...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29122427/transcanal-endoscopic-ear-surgery-for-perilymphatic-fistula-after-electric-acoustic-stimulation
#17
Ryotaro Omichi, Shin Kariya, Yukihide Maeda, Kazunori Nishizaki
Transcanal endoscopic ear surgery (TEES) will become a very useful therapeutic option. A perilymphatic fistula (PLF) is defined as sudden sensorineural hearing loss and/or vertigo caused by leakage of the perilymph through a fistula from the oval window and/or round window. We report a case of PLF after electric acoustic stimulation (EAS), a kind of cochlear implant, successfully treated by TEES. A 38-year-old man presented to our hospital with vertigo and hearing loss (HL). His vertigo was induced by Valsalva maneuvers...
November 6, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/29121171/recognition-and-comprehension-of-narrow-focus-by-young-adults-with-prelingual-hearing-loss-using-hearing-aids-or-cochlear-implants
#18
Osnat Segal, Liat Kishon-Rabin
Purpose: The stressed word in a sentence (narrow focus [NF]) conveys information about the intent of the speaker and is therefore important for processing spoken language and in social interactions. The ability of participants with severe-to-profound prelingual hearing loss to comprehend NF has rarely been investigated. The purpose of this study was to assess the recognition and comprehension of NF by young adults with prelingual hearing loss compared with those of participants with normal hearing (NH)...
November 9, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/29119311/cortical-processing-of-level-cues-for-spatial-hearing-is-impaired-in-children-with-prelingual-deafness-despite-early-bilateral-access-to-sound
#19
Vijayalakshmi Easwar, Hiroshi Yamazaki, Michael Deighton, Blake Papsin, Karen Gordon
Bilateral cochlear implantation aims to restore binaural hearing, important for spatial hearing, to children who are deaf. Improvements over unilateral implant use are attributed largely to the detection of interaural level differences (ILDs) but emerging evidence of impaired sound localization and binaural fusion suggest that these binaural cues are abnormally coded by the auditory system. We used multichannel electroencephalography (EEG) to assess cortical responses to ILDs in two groups: 13 children who received early bilateral cochlear implants (CIs) simultaneously, known to protect the developing auditory cortices from unilaterally driven reorganization, and 15 age matched peers with normal hearing...
November 8, 2017: Brain Topography
https://www.readbyqxmd.com/read/29119199/speech-audiometry-and-data-logging-in-ci%C3%A2-patients-implications-for-adequate-test-levels
#20
M Hey, T Hocke, P Ambrosch
BACKGROUND: As part of postoperative cochlear implant (CI) diagnostics, speech comprehension tests are performed to monitor audiological outcome. In recent years, a trend toward improved suprathreshold speech intelligibility in quiet and an extension of intelligibility to softer sounds has been observed. Parallel to audiometric data, analysis of the patients' acoustic environment can take place by means of data logging in modern CI systems. OBJECTIVES: Which speech test levels reflect the individual listening environment in a relevant manner and how can these be reflected in a clinical audiometric setting? PATIENTS AND METHODS: In a retrospective analysis, data logs of 263 adult CI patients were evaluated for sound level and the listening situation (quiet, speech in quiet, noise, speech in noise, music, and wind)...
November 8, 2017: HNO
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