keyword
MENU ▼
Read by QxMD icon Read
search

Cochlear implantation

keyword
https://www.readbyqxmd.com/read/29166635/the-protean-neuropsychiatric-and-vestibuloauditory-manifestations-of-neurosarcoidosis
#1
Jacqueline J Greene, Ilka C Naumann, Janet M Poulik, Kevin T Nella, Lindsay Weberling, Jeffrey P Harris, Akihiro J Matsuoka
BACKGROUND: A rare subset of sarcoidosis, neurosarcoidosis, is reported to occur in 5-7% of sarcoid patients and can manifest in a variety of ways. The most common are facial paralysis and optic neuritis, less commonly causing cochleovestibulopathy, blindness, anosmia, and other cranial nerve (CN) palsies. The sensory deficit may be severe and psychiatric symptoms may result from the effects of the disease or steroid treatment. Although MRI-compatible cochlear implants are now available, concerns about the feasibility of recoverable hearing with cochlear implantation in these patients as well as the practical difficulty of disease monitoring due to implant artifact must be considered...
November 23, 2017: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/29165436/cochlear-implant-in-prelingually-deafened-oralist-adults-speech-perception-outcomes-subjective-benefits-and-quality-of-life-improvement
#2
F Forli, G Turchetti, G Giuntini, S Bellelli, S Fortunato, L Bruschini, M R Barillari, S Berrettini
The aim of this study is to report our results in a group of prelingually deafened adults, who followed an oralist rehabilitation programme, and submitted to cochlear implant at our institution. We evaluated 30 prelingually deafened adult patients, 18 males and 12 females, median age 35 years, of a group of 36 prelingually deafened adult patients consecutively submitted to unilateral cochlear implantation at the ENT Unit of the University of Pisa. After implantation, patients achieved significant benefits in terms of speech perception skills, including the ability to have telephone conversations in some cases, quality of life and their own perception of disability...
October 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/29161987/encoding-a-melody-using-only-temporal-information-for-cochlear-implant-and-normal-hearing-listeners
#3
Ann E Todd, Griet Mertens, Paul Van de Heyning, David M Landsberger
One way to provide pitch information to cochlear implant users is through amplitude-modulation rate. It is currently unknown whether amplitude-modulation rate can provide cochlear implant users with pitch information adequate for perceiving melodic information. In the present study, the notes of a song were encoded via amplitude-modulation rate of pulse trains on single electrodes at the apex or middle of long electrode arrays. The melody of the song was either physically correct or modified by compression or expansion...
January 2017: Trends in Hearing
https://www.readbyqxmd.com/read/29161976/a-new-approach-for-the-determination-of-ecap-thresholds
#4
Sebastian Hoth, Philipp Spitzer, Mark Praetorius
BACKGROUND: Electrically evoked compound action potentials (ECAPs) of the auditory nerve are routinely recorded for testing the cochlear implant integrity and its functional connection to the auditory system. The response thresholds derived from ECAP recordings are widely used as a helpful guide in the fitting of the dynamic range of electric stimulation, although they may not always predict the behavioral thresholds of individuals well. Conventionally, this threshold is based on the identification of a minimum N peak and maximum P peak and linear extrapolation of the resulting amplitude growth function (AGF)...
November 22, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/29161122/cochlear-implant-standard-seeks-to-enhance-reliability-clinical-decision-making
#5
Teresa Zwolan, Julie Verhoff
No abstract text is available yet for this article.
November 2017: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/29160929/anatomical-variations-of-the-human-cochlea-determined-from-micro-ct-and-high-resolution-ct-imaging-and-reconstruction
#6
Jie Tang, Xianglong Tang, Zhenhua Li, YiKang Liu, SongHua Tan, Heng Li, RongDan Ke, Zhi Wang, Li Gong, AnZhou Tang
Understanding the anatomical variations in the human cochlea are important for cochlear implants. This study examined these variations using a reconstructed fusion model of the skull and temporal bone. The 3D digital model of the temporal bone was reconstructed from multiple axial micro-CT scans of temporal bone and high resolution CT (HRCT) of the skull from 15 cadavers. A skull model was reconstructed and merged with the reconstructed temporal bone. The 3D relationship between the cochlea and the skull's mid-sagittal plane was analyzed...
November 21, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29159054/delayed-access-to-bilateral-input-alters-cortical-organization-in-children-with-asymmetric-hearing
#7
Melissa Jane Polonenko, Blake Croll Papsin, Karen Ann Gordon
Bilateral hearing in early development protects auditory cortices from reorganizing to prefer the better ear. Yet, such protection could be disrupted by mismatched bilateral input in children with asymmetric hearing who require electric stimulation of the auditory nerve from a cochlear implant in their deaf ear and amplified acoustic sound from a hearing aid in their better ear (bimodal hearing). Cortical responses to bimodal stimulation were measured by electroencephalography in 34 bimodal users and 16 age-matched peers with normal hearing, and compared with the same measures previously reported for 28 age-matched bilateral implant users...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29157165/successful-cochlear-implantation-in-langerhans-cell-histiocytosis-a-rare-case
#8
Gaurav Gupta, Avani Jain, Mohnish Grover
An 8-year-old girl presented with a 1-year history of bilateral progressive hearing loss and vertigo for 6 months. High-resolution computed tomography of the temporal bones demonstrated multiple lytic lesions. Histopathology examination confirmed a diagnosis of Langerhans cell histiocytosis (LCH). She underwent chemotherapy for 12 months. Following treatment, she was in remission. However, the bilateral profound sensorineural hearing loss persisted. She underwent right cochlear implantation with very good functional audiological outcomes...
November 20, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/29155975/induced-cortical-responses-require-developmental-sensory-experience
#9
Prasandhya Astagiri Yusuf, Peter Hubka, Jochen Tillein, Andrej Kral
Sensory areas of the cerebral cortex integrate the sensory inputs with the ongoing activity. We studied how complete absence of auditory experience affects this process in a higher mammal model of complete sensory deprivation, the congenitally deaf cat. Cortical responses were elicited by intracochlear electric stimulation using cochlear implants in adult hearing controls and deaf cats. Additionally, in hearing controls, acoustic stimuli were used to assess the effect of stimulus mode (electric versus acoustic) on the cortical responses...
November 16, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29153256/intraoperative-force-and-electrocochleography-measurements-in-an-animal-model-of-cochlear-implantation
#10
J Lo, C Bester, A Collins, C Newbold, A Hampson, S Chambers, H Eastwood, S O'Leary
To preserve residual hearing, techniques for monitoring and reducing the effects of trauma during cochlear implant surgery are being developed. This study examines the relationships between intraoperative recordings (electrode insertion force and electrocochleography), trauma, and hearing loss after cochlear implantation. The study also evaluated the efficacy of intravenous steroids for reducing hearing loss after implantation. Thirty-two normal-hearing guinea pigs were randomly implanted with electrode arrays of differing stiffness ('hard' or 'soft')...
November 9, 2017: Hearing Research
https://www.readbyqxmd.com/read/29148288/cochlear-volume-as-a-predictive-factor-for-residual-hearing-preservation-after-conventional-cochlear-implantation
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
keyword
keyword
13713
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"