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https://www.readbyqxmd.com/read/29470259/pure-tone-audiometry-with-forward-pressure-level-calibration-leads-to-clinically-relevant-improvements-in-test-retest-reliability
#1
Judi A Lapsley Miller, Charlotte M Reed, Sarah R Robinson, Zachary D Perez
OBJECTIVES: Clinical pure-tone audiometry is conducted using stimuli delivered through supra-aural headphones or insert earphones. The stimuli are calibrated in an acoustic (average ear) coupler. Deviations in individual-ear acoustics from the coupler acoustics affect test validity, and variations in probe insertion and headphone placement affect both test validity and test-retest reliability. Using an insert earphone designed for otoacoustic emission testing, which contains a microphone and loudspeaker, an individualized in-the-ear calibration can be calculated from the ear-canal sound pressure measured at the microphone...
February 21, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29468910/definitive-re-irradiation-using-intensity-modulated-radiation-therapy-in-cancers-of-the-head-and-neck-focusing-on-rare-tumors
#2
Hiroshi Doi, Kenji Uemoto, Norihisa Masai, Daisaku Tatsumi, Hiroya Shiomi, Ryoong-Jin Oh
PURPOSE: To analyze the outcomes following re-irradiation for local recurrence of rare head and neck tumors. MATERIAL AND METHODS: We retrospectively analyzed 11 patients who had received intensity-modulated radiation therapy (IMRT) for recurrent tumors in the head and neck except for laryngopharynx. RESULTS: Primary tumor sites included the maxillary sinus, nasal cavity, and external ear canal in six, three, and two patients, respectively...
February 22, 2018: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29466264/effects-of-high-sound-exposure-during-air-conducted-vestibular-evoked-myogenic-potential-testing-in-children-and-young-adults
#3
Amanda I Rodriguez, Megan L A Thomas, Denis Fitzpatrick, Kristen L Janky
OBJECTIVES: Vestibular evoked myogenic potential (VEMP) testing is increasingly utilized in pediatric vestibular evaluations due to its diagnostic capability to identify otolith dysfunction and feasibility of testing. However, there is evidence demonstrating that the high-intensity stimulation level required to elicit a reliable VEMP response causes acoustic trauma in adults. Despite utility of VEMP testing in children, similar findings are unknown. It is hypothesized that increased sound exposure may exist in children because differences in ear-canal volume (ECV) compared with adults, and the effect of stimulus parameters (e...
March 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29466046/impact-of-synthetic-canine-cerumen-on-in-vitro-penetration-of-auricular-skin-of-dogs-by-florfenicol-terbinafine-and-betamethasone-acetate
#4
Sarah Ehling, Ronald E Baynes, Wolfgang Bäumer
OBJECTIVE To determine the pharmacokinetics of florfenicol, terbinafine, and betamethasone acetate after topical application to canine auricular skin and the influence of synthetic canine cerumen on pharmacokinetics. SAMPLE Auricular skin from 6 euthanized shelter dogs (3 females and 3 neutered males with no visible signs of otitis externa). PROCEDURES Skin adjacent to the external opening of the ear canal was collected and prepared for use in a 2-compartment flow-through diffusion cell system to evaluate penetration of an otic gel containing florfenicol, terbinafine, and betamethasone acetate over a 24-hour period...
March 2018: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/29461882/genetic-analyses-identified-a-sall4-gene-mutation-associated-with-holt-oram-syndrome
#5
Bojian Li, Sun Chen, Kun Sun, Rang Xu, Yurong Wu
Holt-Oram syndrome (HOS) is an autosomal dominant disorder, which is characterized by deformities of upper limbs and congenital heart defects. Alterations of TBX5 gene have been identified to be the leading cause of HOS, while some cases could not be explained by TBX5 mutations. In our study, we preliminarily diagnosed a newborn baby, who had Tetralogy of Fallot, thumb agenesis, facial dysplasia, and right ear canal malformation, as HOS. Chromosome microarray analyses showed no pathological deletions or replications of chromosome segments; whole exome sequencing screened out six candidate genes that were involved in cardiac diseases or syndromes among which SALL4 has been reported as HOS related gene...
February 20, 2018: DNA and Cell Biology
https://www.readbyqxmd.com/read/29458340/a-microbiome-case-control-study-of-recurrent-acute-otitis-media-identified-potentially-protective-bacterial-genera
#6
Rachael Lappan, Kara Imbrogno, Chisha Sikazwe, Denise Anderson, Danny Mok, Harvey Coates, Shyan Vijayasekaran, Paul Bumbak, Christopher C Blyth, Sarra E Jamieson, Christopher S Peacock
BACKGROUND: Recurrent acute otitis media (rAOM, recurrent ear infection) is a common childhood disease caused by bacteria termed otopathogens, for which current treatments have limited effectiveness. Generic probiotic therapies have shown promise, but seem to lack specificity. We hypothesised that healthy children with no history of AOM carry protective commensal bacteria that could be translated into a specific probiotic therapy to break the cycle of re-infection. We characterised the nasopharyngeal microbiome of these children (controls) in comparison to children with rAOM (cases) to identify potentially protective bacteria...
February 20, 2018: BMC Microbiology
https://www.readbyqxmd.com/read/29456948/is-routine-use-of-high-resolution-computerized-tomography-of-temporal-bone-in-patients-of-atticoantral-chronic-suppurative-otitis-media-without-intracranial-complications-justified
#7
Meeta Bathla, Hiren Doshi, Atul Kansara
Role of high resolution computerized tomography (HRCT) of temporal bone is established in cases of atticoantral chronic suppurative otitis media (CSOM) with intracranial complications. Routine use of HRCT in management of patients of atticoantral CSOM without intracranial complications has been an issue of debate. The aim of this study was to evaluate the routine use of HRCT of temporal bone in such cases. This study was a prospective study done at LG hospital, AMC MET Medical College, Ahmedabad to evaluate and compare the temporal bone findings in HRCT and intraoperative findings in 100 patients with atticoantral CSOM...
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29456939/outcomes-of-bone-anchored-hearing-aid-implant-at-universiti-kebangsaan-malaysia-medical-centre-ukmmc
#8
Suhana Abdul Rahim, Bee-See Goh, Safinaz Zainor, Roslenda Abdul Rahman, Asma Abdullah
The cross sectional study was conducted in Universiti Kebangsaan Malaysia Medical Center (UKMMC), Malaysia from August 2012 to December 2013. All patients implanted with in UKMMC from December 2001 until December 2012 was included. Glasgow Benefit Inventory (GBI) questionnaires and UKMMC questionnaires were used as part of the assessment tool. The GBI is a scoring which measures the change in health status produced by surgical interventions. UKMMC questionnaires was invented by our department to assess questions related to social and life style of patients and also the cosmetic perspective Baha implant and other daily related activities...
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29456822/self-ear-cleaning-practices-and-the-associated-risk-of-ear-injuries-and-ear-related-symptoms-in-a-group-of-university-students
#9
Nasim Banu Khan, Sivashnee Thaver, Samantha Marlene Govender
Self-ear cleaning is the insertion of objects into the ear canal to clean it, a widespread practice that has the potential to compromise its integrity as a natural, selfcleansing mechanism, and a risk factor for possible injuries. The practice is common among young adults and highest in university than any other graduates. This study aimed to determine the self-ear cleaning practices and associated risk of injury and related symptoms in undergraduate students at KwaZulu-Natal University. The descriptive survey utilized a self-administered questionnaire...
December 31, 2017: Journal of Public Health in Africa
https://www.readbyqxmd.com/read/29455623/rare-case-of-bilateral-aural-atresia-and-cochlear-dysplasia-when-cochlear-implantation-is-not-the-answer
#10
Maja Svrakic
OBJECTIVE AND IMPORTANCE: Reports of patients with concurrent middle and inner ear anomalies are rare. These patients present a surgical challenge for cochlear implantation. The surgical risk must be weighed against the predicted benefit of the patient's hearing outcome and subsequent development of speech and language as well as their quality of life. CLINICAL PRESENTATION: Thirteen-year-old boy presented to the Otology clinic for auditory rehabilitation options...
February 17, 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29451456/clival-meningocele-causing-bilateral-hearing-loss-in-a-child-due-to-superficial-siderosis-of-the-central-nervous-system-case-report
#11
Stephen J Johans, Kevin N Swong, Daniel J Burkett, Michael P Wemhoff, Sean M Lew, Chirag R Patel, Anand V Germanwala
Superficial siderosis (SS) of the CNS is a rare and often unrecognized condition. Caused by hemosiderin deposition from chronic, repetitive hemorrhage in the subarachnoid space, it results in parenchymal damage in the subpial layers of the brain and spinal cord. T2-weighted MRI shows the characteristic hypointensity of hemosiderin deposition, classically occurring around the cerebellum, brainstem, and spinal cord. Patients present with progressive gait ataxia and sensorineural hearing impairment. Although there have been several studies, case reports, and review articles over the years, the clear pathophysiology of subarachnoid space hemorrhage remains to be elucidated...
February 16, 2018: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29447898/challenges-and-outcomes-of-cholesteatoma-management-in-children-with-down-syndrome
#12
Saied Ghadersohi, Bharat Bhushan, Kathleen R Billings
INTRODUCTION: The high incidence of chronic otitis media with effusion and Eustachian tube dysfunction in children with Down syndrome (DS) may predispose them to cholesteatoma formation. Establishing the diagnosis, choosing the appropriate operative intervention, and post-operative care can be challenging. OBJECTIVE: To describe management strategies for cholesteatoma diagnosis, surgical treatment, and post-operative management in children with Down syndrome. METHODS: Retrospective case series of 14 patients (17 total ears) with Down syndrome diagnosed with cholesteatoma over a 9-year period...
March 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29447896/bony-cochlear-nerve-canal-stenosis-in-pediatric-unilateral-sensorineural-hearing-loss
#13
Chae-Hyun Lim, Ji Hyung Lim, Doyoun Kim, Ho Sung Choi, Dong-Hee Lee, Dong-Kee Kim
OBJECTIVES: This study was performed to evaluate the frequency of bony cochlear nerve canal (BCNC) stenosis and its clinical significance in pediatric patients with unilateral sensorineural hearing loss (SNHL) of unknown etiology. MATERIALS AND METHODS: We analyzed the medical records and temporal bone computed tomography (CT) results of patients less than 13 years of age with a diagnosis of unilateral SNHL of unknown etiology between July 2007 and July 2017. We compared the BCNC diameter between both sides and analyzed the age at diagnosis, degree of hearing loss, and accompanying inner ear anomalies...
March 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29447806/pediatric-meniere-s-disease
#14
Chi Wang, Chien-Hao Wu, Po-Wen Cheng, Yi-Ho Young
OBJECTIVE: This study adopted an inner ear test battery comprising audiometry, and ocular vestibular evoked myogenic potential (oVEMP), cervical VEMP (cVEMP), and caloric tests to investigate the sequence of inner ear deficits in pediatric Meniere's disease (MD). METHODS: From 2005 to 2016, a total of 24 MD children aged <15 years old underwent otoscopy, CT scan, blood test, and an inner ear test battery. Nine subjects were males and 15 were females, with mean age of 12 years...
February 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29445157/enhanced-viral-mediated-cochlear-gene-delivery-in-adult-mice-by-combining-canal-fenestration-with-round-window-membrane-inoculation
#15
Hidekane Yoshimura, Seiji B Shibata, Paul T Ranum, Richard J H Smith
Cochlear gene therapy holds promise for the treatment of genetic deafness. Assessing its impact in adult murine models of hearing loss, however, has been hampered by technical challenges that have made it difficult to establish a robust method to deliver transgenes to the mature murine inner ear. Here in we demonstrate the feasibility of a combined round window membrane injection and semi-circular canal fenestration technique in the adult cochlea. Injection of both AAV2/9 and AAV2/Anc80L65 via this approach in P15-16 and P56-60 mice permits robust eGFP transduction of virtually all inner hair cells throughout the cochlea with variable transduction of vestibular hair cells...
February 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29429820/direct-bone-conduction-stimulation-ipsilateral-effect-of-different-transducer-attachments-in-active-transcutaneous-devices
#16
Cristina Rigato, Sabine Reinfeldt, Bo Håkansson, Karl-Johan Fredén Jansson, Erik Renvall, Måns Eeg-Olofsson
Active transcutaneous bone conduction devices, where the transducer is implanted, are used for rehabilitation of hearing impaired patients by directly stimulating the skull bone. The transducer and the way it is attached to the bone play a central role in the design of such devices. The actual effect of varying the contact to bone has not been addressed yet. The aim of this study is therefore to compare how different attachment methods of the transducer to the bone for direct stimulation affect the ear canal sound pressure and vibration transmission to the ipsilateral cochlea...
January 31, 2018: Hearing Research
https://www.readbyqxmd.com/read/29429175/-middle-ear-teratoma-in-infant-report-of-three-cases-and-review-of-the-literatures
#17
Z Peng, Z X Wang, J Xie, L E Wang, Y Liu, S S Gong
Objective: To summarize the clinical characteristics and therapeutic experiences of the middle ear teratoma in infants. Methods: Three cases of middle ear teratoma, from 2012-2015 in Beijing Friendship Hospital were analyzed. Results: The three cases all developed slowly and presented unilateral otorrhea and hearing loss. Otoscopy showed the granulation tissue in the external ear canal. Audiological changes varied according to the degree of severity. Imaging features showed the pocket-like occupancy lesions in the Eustachian tube area...
February 7, 2018: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29426271/long-term-results-of-atresiaplasty-in-patients-with-congenital-aural-atresia
#18
Juuso Pellinen, Juha-Pekka Vasama, Ilkka Kivekäs
OBJECTIVES: To evaluate long-term benefits of atresiaplasty on hearing and the impact of surgery on quality of life (QoL) in congenital aural atresia (CAA) patients. METHODS: We evaluated the long-term hearing results, the impact of atresiaplasty on QoL, the meatal diameter of the operated ear canal, and the cumulative number of post-operative hospital visits in 14 CAA patients, on average, 12 years (range: 4-17 years) post-operatively. RESULTS: The mean preoperative pure tone average (PTA) was 61 dB HL...
February 9, 2018: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29426243/external-auditory-canal-dimensions-age-and-cerumen-retention-or-impaction-in-persons-with-down-syndrome
#19
Alexander Edward S Dy, José Florencio F Lapeña
OBJECTIVE: To investigate associations between age, external auditory canal (EAC) dimensions, and cerumen retention/impaction among persons with Down syndrome (DS). METHODS: This cross-sectional study evaluated EAC dimensions, cerumen retention/impaction, and middle ear status with pneumatoscopy after extraction in 130 persons with DS. Descriptive and inferential statistics correlated age, presence of impacted/retained cerumen, and EAC diameter. RESULTS: Of 260 ears in 67 males and 63 females with average age of 9...
February 1, 2018: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/29417191/-new-clinical-applications-for-laser-doppler-vibrometry-in-otology
#20
REVIEW
T Strenger, M Brandstetter, T Stark, F Böhnke
BACKGROUND: An instrument to measure vibration in the middle ear needs to be sensitive enough to detect displacement on a nanometer scale, yet not affect the vibration itself. Numerous techniques have been described in the literature, but laser Doppler vibrometry (LDV) has nowadays become established as the standard method in hearing research. OBJECTIVE: This article aims to present possible clinical applications of an LDV system in otology. MATERIALS AND METHODS: A commercially available single-point vibrometer was used...
February 7, 2018: HNO
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