keyword
https://read.qxmd.com/read/38541910/hearing-outcomes-from-gamma-knife-treatment-for-intracanalicular-vestibular-schwannomas-with-good-initial-hearing
#1
JOURNAL ARTICLE
Philippine Toulemonde, Nicolas Reyns, Michael Risoud, Pierre-Emmanuel Lemesre, Frédéric Gabanou, Marc Baroncini, Jean-Paul Lejeune, Rabih Aboukais, Christophe Vincent
Background: The objective of this study was to describe the long-term hearing outcomes of gamma knife treatment for unilateral progressing vestibular schwannomas (VS) presenting with good initial hearing using audiologic data. Methods: A retrospective review was performed between 2010 and 2020 to select patients with progressing unilateral VS and good hearing (AAO-HNS class A) treated with stereotactic gamma knife surgery (GKS). Their audiograms were analyzed along with treatment metrics and patient data. Results : Hearing outcomes with a median follow-up of 5 years post-treatment showed statistically significant loss of serviceable hearing: 34...
March 14, 2024: Journal of Clinical Medicine
https://read.qxmd.com/read/38539359/unilateral-sensorineural-hearing-loss-in-children-etiology-audiological-characteristics-and-treatment
#2
JOURNAL ARTICLE
Mirko Aldè, Diego Zanetti, Umberto Ambrosetti, Eleonora Monaco, Anna Maria Gasbarre, Lorenzo Pignataro, Giovanna Cantarella, Stefania Barozzi
The aim of this study was to evaluate audiological characteristics and parents' opinions on hearing device use in children with unilateral sensorineural hearing loss (USNHL) who attended a tertiary-level audiologic center. The medical charts of 70 children aged 6 to 12 years with USNHL were reviewed. In 51.4% of cases, the children were diagnosed with USNHL after the age of 2 years. The main causes of USNHL were congenital cytomegalovirus infection (21.4%) and unilateral cochlear nerve hypoplasia (12.9%). The percentage of patients wearing a hearing device was 45...
March 9, 2024: Children
https://read.qxmd.com/read/38533346/detection-of-reduced-diameter-of-the-cochlear-nerve-in-long-term-deaf-patients-quantified-with-semiautomatic-measurement-of-nerve-cross-sectional-area-using-3t-mri-data
#3
JOURNAL ARTICLE
Katrin Reimann, Uwe Klose, Ulrike Ehrenpfordt, Kruthika Thangavelu, Maximilian Schulze
HYPOTHESIS: High-resolution parallel transmit T2 sampling perfection with application optimized contrast using different flip angle evolution sequence with improved edge discrimination and semiautomatic determination of nerve cross-sectional area (CSA) can be used to evaluate nerve degeneration in the inner auditory canal (IAC) in long-term deaf patients. BACKGROUND: In patients with hearing loss, temporal bone MRI is routinely acquired to evaluate the morphology of the nerves within the IAC...
March 2024: Otol Neurotol Open
https://read.qxmd.com/read/38515783/cochlear-implant-fold-detection-in-intra-operative-ct-using-weakly-supervised-multi-task-deep-learning
#4
JOURNAL ARTICLE
Mohammad M R Khan, Yubo Fan, Benoit M Dawant, Jack H Noble
In cochlear implant (CI) procedures, an electrode array is surgically inserted into the cochlea. The electrodes are used to stimulate the auditory nerve and restore hearing sensation for the recipient. If the array folds inside the cochlea during the insertion procedure, it can lead to trauma, damage to the residual hearing, and poor hearing restoration. Intraoperative detection of such a case can allow a surgeon to perform reimplantation. However, this intraoperative detection requires experience and electrophysiological tests sometimes fail to detect an array folding...
October 2023: Medical Image Computing and Computer-assisted Intervention: MICCAI ..
https://read.qxmd.com/read/38503720/peripheral-neural-synchrony-in-postlingually-deafened-adult-cochlear-implant-users
#5
JOURNAL ARTICLE
Shuman He, Jeffrey Skidmore, Ian C Bruce, Jacob J Oleson, Yi Yuan
OBJECTIVES: This paper reports a noninvasive method for quantifying neural synchrony in the cochlear nerve (i.e., peripheral neural synchrony) in cochlear implant (CI) users, which allows for evaluating this physiological phenomenon in human CI users for the first time in the literature. In addition, this study assessed how peripheral neural synchrony was correlated with temporal resolution acuity and speech perception outcomes measured in quiet and in noise in postlingually deafened adult CI users...
March 20, 2024: Ear and Hearing
https://read.qxmd.com/read/38478409/intraoperative-eabr-testing-predicts-strength-of-cochlear-implant-stimulation-optimized-after-long-term-use-in-pediatric-malformation-ears
#6
JOURNAL ARTICLE
Hiroshi Yamazaki, Saburo Moroto, Tomoko Yamazaki, Rinko Tamaya, Naoko Fujii, Ichiro Sasaki, Keizo Fujiwara, Yasushi Naito
OBJECTIVE: This study focused on the intensities of cochlear implant (CI) stimulation in pediatric CI users with inner ear malformation or cochlear nerve deficiency (CND). In this population, CI programming is difficult because a large intensity of CI stimulation is required to achieve sufficient hearing, but the excess CI stimuli often induce facial nerve stimulation. We aimed to assess whether the results of intraoperative electrically evoked auditory brainstem responses (EABRs) testing predict maximum current levels of CI stimuli (cC levels) optimized by a behavioral-based method after long-term CI use...
April 1, 2024: Otology & Neurotology
https://read.qxmd.com/read/38473985/cochlear-ribbon-synapses-in-aged-gerbils
#7
JOURNAL ARTICLE
Sonny Bovee, Georg M Klump, Sonja J Pyott, Charlotte Sielaff, Christine Köppl
In mammalian hearing, type-I afferent auditory nerve fibers comprise the basis of the afferent auditory pathway. They are connected to inner hair cells of the cochlea via specialized ribbon synapses. Auditory nerve fibers of different physiological types differ subtly in their synaptic location and morphology. Low-spontaneous-rate auditory nerve fibers typically connect on the modiolar side of the inner hair cell, while high-spontaneous-rate fibers are typically found on the pillar side. In aging and noise-damaged ears, this fine-tuned balance between auditory nerve fiber populations can be disrupted and the functional consequences are currently unclear...
February 27, 2024: International Journal of Molecular Sciences
https://read.qxmd.com/read/38455770/a-case-of-unilateral-facial-spasm-with-vulnerable-hearing-function-due-to-a-history-of-cisplatin-treatment-resulting-in-intraoperative-hearing-loss
#8
Akina Iwasaki, Masahito Kobayashi, Sachiko Hirata, Kazuhiko Takabatake, Masaki Ujihara, Takamitsu Fujimaki
A 51-year-old man with a history of cisplatin treatment for a right testicular tumor underwent microvascular decompression for hemifacial spasm. At an early stage in the surgical procedure, the intraoperative auditory brainstem response (ABR) was diminished despite a relatively minimally invasive approach, resulting in irreversible hearing loss. Cisplatin is known to cause dose-dependent hearing impairment primarily affecting the cochlea, but it can also induce neurotoxicity. In the present case, prior cisplatin administration may have caused fragility of the cochlear nerve as well...
February 2024: Curēus
https://read.qxmd.com/read/38454282/localization-of-the-vertical-part-of-the-facial-nerve-in-the-high-resolution-computed-tomography-during-pediatric-cochlear-implantation
#9
JOURNAL ARTICLE
Mahmoud Mandour, Mohamed Amer, Saad Elzayat, Edoardo Covelli, Maurizio Barbara, Rasha Lotfy, Haitham H Elfarargy, Mohamed Osama Tomoum
BACKGROUND: This study proposed a classification of the vertical portion of the facial nerve (VPFN) location, incorporating the previous classifications regarding the posterior-to-anterior and medial-to-lateral dimensions. We also evaluated the implication of this proposed classification on the round window visibility during pediatric cochlear implantation (CI). METHODS: It was a retrospective multicenter observational cohort study. This study included 334 cases that underwent CI between 2015 and 2022 at multiple referral institutes...
January 2024: Journal of International Advanced Otology
https://read.qxmd.com/read/38451925/a-frequency-peak-at-3-1-khz-obtained-from-the-spectral-analysis-of-the-cochlear-implant-electrocochleography-noise
#10
JOURNAL ARTICLE
Javiera Herrada, Vicente Medel, Constantino Dragicevic, Juan C Maass, Carlos E Stott, Paul H Delano
INTRODUCTION: The functional evaluation of auditory-nerve activity in spontaneous conditions has remained elusive in humans. In animals, the frequency analysis of the round-window electrical noise recorded by means of electrocochleography yields a frequency peak at around 900 to 1000 Hz, which has been proposed to reflect auditory-nerve spontaneous activity. Here, we studied the spectral components of the electrical noise obtained from cochlear implant electrocochleography in humans. METHODS: We recruited adult cochlear implant recipients from the Clinical Hospital of the Universidad de Chile, between the years 2021 and 2022...
2024: PloS One
https://read.qxmd.com/read/38445986/predicting-early-auditory-evoked-potentials-using-a-computational-model-of-auditory-nerve-processing
#11
JOURNAL ARTICLE
Miguel Temboury-Gutierrez, Gerard Encina-Llamas, Torsten Dau
Non-invasive electrophysiological measures, such as auditory evoked potentials (AEPs), play a crucial role in diagnosing auditory pathology. However, the relationship between AEP morphology and cochlear degeneration remains complex and not well understood. Dau [J. Acoust. Soc. Am. 113, 936-950 (2003)] proposed a computational framework for modeling AEPs that utilized a nonlinear auditory-nerve (AN) model followed by a linear unitary response function. While the model captured some important features of the measured AEPs, it also exhibited several discrepancies in response patterns compared to the actual measurements...
March 1, 2024: Journal of the Acoustical Society of America
https://read.qxmd.com/read/38440579/round-window-visibility-in-cochlear-implantation-pre-operative-prediction-using-various-radiological-parameters
#12
JOURNAL ARTICLE
Anjali Gupta, Sunil Samdani, Shivam Sharma, Mohnish Grover, Samanvaya Soni, Mahendra Singh Hada, Amit Kumar
PURPOSE: The round window approach has become the most preferred route for electrode insertion in cochlear implant surgery; however, it is not possible at times due to difficult round window membrane (RWM) visibility. Our study aims to investigate the relationship between preoperative radiological parameters and the surgical visibility of the RWM in Cochlear implant patients. METHODOLOGY: A prospective cross-sectional study of 31 patients, age < 6 years, with bilateral severe to profound sensorineural hearing loss was conducted at a tertiary care hospital...
February 2024: Indian Journal of Otolaryngology and Head and Neck Surgery
https://read.qxmd.com/read/38440460/radiological-parameters-predicting-the-round-window-niche-visibility-through-facial-recess-approach-in-cochlear-implantation
#13
JOURNAL ARTICLE
Sauradeep Das, Kalaiarasi Raja, G Ramkumar, Vishak Ms, Sivaraman Ganesan, Arun Alexander, Lokesh Kumar Penubarthi
AIM: The aim was to study the radiological parameters using High Resolution Computed Tomography (HRCT) temporal bone to predict the Round Window Niche (RWN) visibility through the facial recess approach and to study radiological types of the round window niche. MATERIALS AND METHODS: Prospective study was done in the patients underwent CI surgery from 2019 to 2021. HRCT radiological parameters of the patients and their intraoperative visualisation from video recordings were compared to predict the most feasible parameters to predict good visualisation of RWN...
February 2024: Indian Journal of Otolaryngology and Head and Neck Surgery
https://read.qxmd.com/read/38440431/cochlear-implant-insertion-routes-and-intra-operative-electrophysiological-measurements-a-retrospective-analysis-at-a-tertiary-care-centre
#14
JOURNAL ARTICLE
Kanchan Tadke, Pradyumna Singh
BACKGROUND: Cochlear implant surgeries are performed by different surgical routes, Round window (RW), Extended round window (Ext RW) and Cochleostomy (C). Optimum intracochlear electrode placement is important to achieve a successful outcome. Intra-operative electrophysiological testing (Impedance and ECAP) is crucial to assess the device function and appropriate electrode placement. The variability of portal of electrode insertion might affect the neural response and its characteristics...
February 2024: Indian Journal of Otolaryngology and Head and Neck Surgery
https://read.qxmd.com/read/38427998/auditory-brainstem-implantation-surgical-experience-and-audiometric-outcomes-in-the-pediatric-population
#15
JOURNAL ARTICLE
Yosef M Dastagirzada, Alexander Eremiev, Jeffrey H Wisoff, Emily Kay-Rivest, William H Shapiro, Ansley Unterberger, Susan B Waltzman, J Thomas Roland, John G Golfinos, David H Harter
OBJECTIVE: Pediatric data regarding treatment via an auditory brainstem implant (ABI) remains sparse. The authors aimed to describe their experience at their institution and to delineate associated demographic data, audiometric outcomes, and surgical parameters. METHODS: An IRB-approved, retrospective chart review was conducted among the authors' pediatric patients who had undergone auditory brainstem implantation between 2012 and 2021. Demographic information including sex, age, race, coexisting syndrome(s), history of cochlear implant placement, average duration of implant use, and follow-up outcomes were collected...
March 1, 2024: Journal of Neurosurgery. Pediatrics
https://read.qxmd.com/read/38425805/glycine-is-a-transmitter-in-the-human-and-chimpanzee-cochlear-nuclei
#16
JOURNAL ARTICLE
Joan S Baizer, Chet C Sherwood, Patrick R Hof, James F Baker, Sandra F Witelson
INTRODUCTION: Auditory information is relayed from the cochlea via the eighth cranial nerve to the dorsal and ventral cochlear nuclei (DCN, VCN). The organization, neurochemistry and circuitry of the cochlear nuclei (CN) have been studied in many species. It is well-established that glycine is an inhibitory transmitter in the CN of rodents and cats, with glycinergic cells in the DCN and VCN. There are, however, major differences in the laminar and cellular organization of the DCN between humans (and other primates) and rodents and cats...
2024: Frontiers in Neuroanatomy
https://read.qxmd.com/read/38417484/cochlear-aqueduct-revisited-a-histological-study-using-human-fetuses
#17
JOURNAL ARTICLE
Kwang Ho Cho, Ji Hyun Kim, Yohei Honkura, Masahito Yamamoto, Gen Murakami, Jose Francisco Rodríguez-Vázquez, Yukio Katori
BACKGROUND AND AIM: The cochlear aqueduct (CA) connects between the perilymphatic space of the cochlea and the subarachnoid space in the posterior cranial fossa. The study aimed to examine 1) whether cavitation of the CA occurs on the subarachnoid side or the cochlear side and 2) the growth and/or degeneration of the CA and its concomitant vein. METHODS: We examined paraffin-embedded histological sections from human fetuses: 15 midterm fetuses (crown-rump length or CRL, 39-115mm) and 12 near-term fetuses (CRL, 225-328mm)...
February 26, 2024: Annals of Anatomy
https://read.qxmd.com/read/38403779/how-i-do-it-hearing-preservation-in-large-vestibular-schwannomas-using-vestibular-nerve-fiber-preservation-technique
#18
JOURNAL ARTICLE
Omaditya Khanna, Elizabeth Hogan, Reinier Alvarez, A Samy Youssef
BACKGROUND: To improve hearing function after resection of large vestibular schwannomas, we describe a strategy of vestibular-nerve-fiber preservation. Anatomical considerations and stepwise dissection are described. METHOD: Steps include locating the vestibular nerve at the brainstem and identifying a dissection plane between nerve fibers and tumor capsule. Using this plane to mobilize and resect tumor reduced manipulation and maintained vascularity of underlying cochlear and facial nerves...
February 26, 2024: Acta Neurochirurgica
https://read.qxmd.com/read/38397748/oxidative-stress-plays-an-important-role-in-glutamatergic-excitotoxicity-induced-cochlear-synaptopathy-implication-for-therapeutic-molecules-screening
#19
JOURNAL ARTICLE
Anissa Rym Saidia, Florence François, François Casas, Ilana Mechaly, Stéphanie Venteo, Joseph T Veechi, Jérôme Ruel, Jean-Luc Puel, Jing Wang
The disruption of the synaptic connection between the sensory inner hair cells (IHCs) and the auditory nerve fiber terminals of the type I spiral ganglion neurons (SGN) has been observed early in several auditory pathologies (e.g., noise-induced or ototoxic drug-induced or age-related hearing loss). It has been suggested that glutamate excitotoxicity may be an inciting element in the degenerative cascade observed in these pathological cochlear conditions. Moreover, oxidative damage induced by free hydroxyl radicals and nitric oxide may dramatically enhance cochlear damage induced by glutamate excitotoxicity...
January 25, 2024: Antioxidants (Basel, Switzerland)
https://read.qxmd.com/read/38395618/age-related-deficits-in-binaural-hearing-contribution-of-peripheral-and-central-effects
#20
JOURNAL ARTICLE
Sandra Tolnai, Mariella Weiß, Rainer Beutelmann, Jens P Bankstahl, Sonny Bovee, Tobias L Ross, Georg Berding, Georg M Klump
Pure-tone audiograms often poorly predict elderly humans' ability to communicate in everyday complex acoustic scenes. Binaural processing is crucial for discriminating sound sources in such complex acoustic scenes. The compromised perception of communication signals presented above hearing threshold has been linked to both peripheral and central age-related changes in the auditory system. Investigating young and old Mongolian gerbils of both sexes, an established model for human hearing, we demonstrate age-related supra-threshold deficits in binaural hearing using behavioral, electrophysiological, anatomical and imaging methods...
February 23, 2024: Journal of Neuroscience
keyword
keyword
76088
1
2
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

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"

We want to hear from doctors like you!

Take a second to answer a survey question.