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Hearing Preservation

Ashley Zaleski-King, Matthew J Goupell, Dragana Barac-Cikoja, Matthew Bakke
BACKGROUND: Bilateral inputs should ideally improve sound localization and speech understanding in noise. However, for many bimodal listeners [i.e., individuals using a cochlear implant (CI) with a contralateral hearing aid (HA)], such bilateral benefits are at best, inconsistent. The degree to which clinically available HA and CI devices can function together to preserve interaural time and level differences (ITDs and ILDs, respectively) enough to support the localization of sound sources is a question with important ramifications for speech understanding in complex acoustic environments...
November 12, 2018: Journal of the American Academy of Audiology
Eva Orzan, Enrico Muzzi, Igor Caregnato, Pietro Cossu, Raffaella Marchi, Sara Ghiselli
Bacterial meningitis may cause inner ear fibrosis and progressive cochlear ossification with irreversible profound hearing loss (HL). Recognition of potential ossification is essential for effective management. We present a clinical case of a 4 year old boy who developed a progressive HL starting 3 weeks after meningitis. For the prospective risk of cochlear ossification, bilateral cochlear implantation (CI) was performed. Unexpectedly, unaided hearing threshold began to show improvement on the left ear, starting 4 months after meningitis and continuing for years post CI surgery...
November 9, 2018: Journal of International Advanced Otology
Christopher Welch, Margaret T Dillon, Harold C Pillsbury
Hearing loss affects 30 million people in the United States, and a subset of these patients have normal low-frequency hearing and ski-sloped high-frequency hearing loss. For these patients, hearing aids alone may not provide adequate benefit. Cochlear implantation alone has been utilized to improve speech perception. The addition of high-frequency electric hearing to low-frequency acoustic hearing in these patients is beneficial. Technical improvements have allowed preservation of low-frequency hearing in cochlear implant recipients, allowing for electric and acoustic stimulation in the same ear with significant improvements in speech perception, sound localization, music appreciation, and quality of life...
November 2018: Seminars in Hearing
Pavlina Sverak, Meredith E Adams, Stephen J Haines, Samuel C Levine, David Nascene, Katherine Sommer, Kathryn Dusenbery, Tina C Huang, Christopher Moertel
OBJECTIVE: Bevacizumab for hearing preservation in patients with neurofibromatosis type 2 (NF2) is an emerging practice. We set out to characterize the effectiveness and toxicity of bevacizumab in our patient group. STUDY DESIGN: Case series with chart review. SETTING: Tertiary referral center. SUBJECTS AND METHODS: Seventeen consecutive patients with NF2 received bevacizumab treatment for vestibular schwannomas, including 2 patients treated to maintain cochlear implant performance...
October 30, 2018: Otolaryngology—Head and Neck Surgery
Henne Holstege, Nina Beker, Tjitske Dijkstra, Karlijn Pieterse, Elizabeth Wemmenhove, Kimja Schouten, Linette Thiessens, Debbie Horsten, Sterre Rechtuijt, Sietske Sikkes, Frans W A van Poppel, Hanne Meijers-Heijboer, Marc Hulsman, Philip Scheltens
Although the incidence of dementia increases exponentially with age, some individuals reach more than 100 years with fully retained cognitive abilities. To identify the characteristics associated with the escape or delay of cognitive decline, we initiated the 100-plus Study ( ). The 100-plus Study is an on-going prospective cohort study of Dutch centenarians who self-reported to be cognitively healthy, their first-degree family members and their respective partners. We collect demographics, life history, medical history, genealogy, neuropsychological data and blood samples...
October 25, 2018: European Journal of Epidemiology
Gregory P Lekovic, Marc S Schwartz, George Hanna, John Go
Objectives: Little evidence exists regarding the management of orbital meningioma causing vision loss in the setting of neurofibromatosis Type 2 (NF2). We review here our experience with patients at risk for blindness due to intra-orbital meningioma. Design/Setting/Participants/Main Outcome Measures: The charts of patients with NF2 presenting for evaluation of intra-orbital meningioma and vision impairment between 2008 and 2013 were retrospectively reviewed in accordance with institutional IRB policies. Patients with primarily extra-orbital tumors and minimal intra-orbital extension were excluded...
2018: Frontiers in Surgery
Ivo Dobrev, Jae Hoon Sim, Flurin Pfiffner, Alexander M Huber, Christof Röösli
OBJECTIVES: Evaluation of the transfer function efficiency of a newly-developed piezo-electric actuator for active subcutaneous bone conduction hearing aid. METHODS: The experiments were conducted on four Thiel embalmed whole head cadaver specimens. A novel actuator based on piezo-electric transduction (PZTA), part of a subcutaneous bone conduction hearing aid device, was sequentially implanted on three locations: 1) Immediately posterior to pinna; 2) 50-60 mm posterior to pinna, approximately the same distance as between the BAHA (bone anchored hearing aid) location and the ear canal, but the same horizontal level as location 1; 3) the traditional BAHA location...
October 6, 2018: Hearing Research
Baptiste Hochet, Sophie Achard, Mark Brandt Lorenz, Marc Baroncini, Amine Berama, Frederic Gabanou, Marion Devambez, Jean-Paul Lejeune, Christophe Vincent, Nicolas-Xavier Bonne
OBJECTIVE: To determine whether cervical vestibular evoked myogenic potentials (cVEMPs) are predictive of hearing preservation in patients undergoing vestibular schwannoma removal through middle fossa craniotomy approach. STUDY DESIGN: Retrospective case study. SETTING: Tertiary referral center. PATIENTS: Eighteen patients who underwent a middle fossa craniotomy for vestibular schwannoma (stage I or II of Koos classification) with attempted hearing preservation from January 2008 to February 2016 were retrospectively reviewed...
October 18, 2018: Otology & Neurotology
Christopher K Giardina, Kevin D Brown, Oliver F Adunka, Craig A Buchman, Kendall A Hutson, Harold C Pillsbury, Douglas C Fitzpatrick
OBJECTIVES: Electrocochleography (ECochG) obtained through a cochlear implant (CI) is increasingly being tested as an intraoperative monitor during implantation with the goal of reducing surgical trauma. Reducing trauma should aid in preserving residual hearing and improve speech perception overall. The purpose of this study was to characterize intracochlear ECochG responses throughout insertion in a range of array types and, when applicable, relate these measures to hearing preservation...
October 17, 2018: Ear and Hearing
Warren Michael Henry Bakay, Lucy Anne Anderson, Jose Alberto Garcia-Lazaro, David McAlpine, Roland Schaette
Exposure to even a single episode of loud noise can damage synapses between cochlear hair cells and auditory nerve fibres, causing hidden hearing loss (HHL) that is not detected by audiometry. Here we investigate the effects of noise-induced HHL on functional hearing by measuring the ability of neurons in the auditory midbrain of mice to adapt to sound environments containing quiet and loud periods. Neurons from noise-exposed mice show less capacity for adaptation to loud environments, convey less information about sound intensity in those environments, and adaptation to the longer-term statistical structure of fluctuating sound environments is impaired...
October 16, 2018: Nature Communications
Oak-Sung Choo, Dukyong Yoon, Young Choi, Soojung Jo, Ho-Min Jung, Jun Young An, Yun-Hoon Choung
Hearing loss in the elderly causes communication difficulties, decreased quality of life, isolation, loneliness and frustration. The aim of this study was to identify the modifiable variables that may affect the progression of hearing loss in the elderly. A case-control study was conducted using two datasets. Data were extracted from the health examination survey of Ajou University Hospital (2010-2014) and the Korea National Health and Nutrition Examination Survey (2009-2012) datasets. Audiometry data were evaluated according to variables such as age, sex and drug use for underlying diseases...
October 16, 2018: Basic & Clinical Pharmacology & Toxicology
X Dubernard, J-C Kleiber, M Makeieff, A Bazin, A Chays
Preservation of vestibular structures, particularly the posterior semicircular canal, is essential to ensure hearing preservation in addition to complete tumour resection during retrosigmoid surgical resection of a vestibular schwannoma. Drilling of the internal auditory canal (IAC) is a delicate step, during which these structures can be accidentally perforated. The orientation of the IAC results in the formation of poorly visible zones that can predispose to perforation of these structures when drilling is performed with a microscope...
October 11, 2018: European Annals of Otorhinolaryngology, Head and Neck Diseases
H Jia, M M El El Sayed, M Smail, I Mosnier, H Wu, O Sterkers, M Kalamarides, D Bernardeschi
The main manifestation of neurofibromatosis type 2 (NF2) is the development of bilateral vestibular schwannomas (VS). Consequently, one of the most severe functional sequelae is bilateral sensorineural hearing loss, caused by spontaneous tumor progression and/or treatment-related damage (surgery or radiosurgery). Preserving or restoring hearing is still challenging in NF2 no matter the strategy applied to each individual based on the natural history of VS. In this review, the different strategies for hearing preservation or rehabilitation are discussed and illustrated by several cases...
October 9, 2018: Neuro-Chirurgie
William Crohan, Jay Krishnaswamy, Gunesh Rajan
AIM: To investigate and compare residual hearing preservation between patients based on the presence of intraoperative gusher. METHODOLOGY: We retrospectively compared 2 cohorts of cochlear implant recipients significantly distinguished by whether or not they experienced gusher intraoperatively. Patients underwent cochlear implantation using 24-mm lateral wall electrode arrays as well pharmacologic steroid protection. All patients were assessed by a hearing implant MDT...
October 10, 2018: Audiology & Neuro-otology
Silke Hügl, Katharina Rülander, Thomas Lenarz, Omid Majdani, Thomas S Rau
PURPOSE: Latest research on cochlear implantations focuses on hearing preservation during insertion of the implant's electrode array by reducing insertion trauma. One parameter which may influence trauma is insertion speed. The objective of this study was to extend the range of examined insertion speeds to include ultra-low velocities, being lower than manually feasible, and investigate whether these reduce insertion forces. METHODS: 24 custom-made cochlear implant test samples were fabricated and inserted into an artificial scala tympani model using 12 different insertion speeds while measuring the resulting insertion forces...
October 9, 2018: European Archives of Oto-rhino-laryngology
Benjamin Dieudonné, Tom Francart
OBJECTIVES: To establish a framework to unambiguously define and relate the different spatial effects in speech understanding: head shadow, redundancy, squelch, spatial release from masking (SRM), and so on. Next, to investigate the contribution of interaural time and level differences to these spatial effects in speech understanding and how this is influenced by the type of masking noise. DESIGN: In our framework, SRM is uniquely characterized as a linear combination of head shadow, binaural redundancy, and binaural squelch...
October 5, 2018: Ear and Hearing
Roland Nagy, János András Jarabin, Balázs Dimák, Ádám Perényi, Ferenc Tóth, Viktória Szűts, József Jóri, József Géza Kiss, László Rovó
During the rehabilitation of hearing-impaired patients, the preservation of residual acoustic hearing following cochlear implantation by minimizing the implantation trauma allows for improved hearing performance. To achieve this, minimally invasive, soft surgery methods and thinner, atraumatic electrodes were required. In our present study, we reported a case where Cochlear® Nucleus CI532 Slim Modiolar electrode was implanted in a patient with residual hearing. Our aim was to study the possible preservation of postoperative acoustic residual hearing by audiological monitoring...
October 2018: Orvosi Hetilap
W L Crutcher, P Tassone, S Pelosi
OBJECTIVE: To compare post-operative audiometric outcomes for the two prevailing surgical approaches for isolated malleus and/or incus fixation: ossicular mobilisation with preservation of the ossicular chain, and disruption and reconstruction of the ossicular chain. METHODS: A search was conducted, in December 2016, of PubMed, Scopus, and Cumulative Index to Nursing and Allied Health Literature articles written in English. Papers presenting original data regarding post-operative audiometric outcomes in patients who underwent surgical treatment for malleus and/or incus fixation with a mobile and intact stapes were included...
October 2018: Journal of Laryngology and Otology
Adam R Coughlin, Anastasia A Hunt, Samuel P Gubbels
No abstract text is available yet for this article.
October 3, 2018: Laryngoscope
Artyom Zinchenko, Philipp Kanske, Christian Obermeier, Erich Schröger, Arno Villringer, Sonja A Kotz
Progressive hearing loss is a common phenomenon in healthy aging and may affect the perception of emotions expressed in speech. Elderly with mild to moderate hearing loss often rate emotional expressions as less emotional and display reduced activity in emotion-sensitive brain areas (e.g., amygdala). However, it is not clear how hearing loss affects cognitive and emotional control mechanisms engaged in multimodal speech processing. In previous work we showed that negative, task-relevant and -irrelevant emotion modulates the two types of control in younger and older adults without hearing loss...
2018: Frontiers in Neurology
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