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conductive hearing loss

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https://www.readbyqxmd.com/read/28102004/prevalence-and-causes-of-hearing-impairment-in-fundong-health-district-north-west-cameroon
#1
Silvia Ferrite, Islay Mactaggart, Hannah Kuper, Joseph Oye, Sarah Polack
OBJECTIVE: To estimate the prevalence and causes of hearing impairment in Fundong Health District, North West Cameroon. METHODS: We selected 51 clusters of 80 people through probability proportionate to size sampling. Initial hearing screening was undertaken through an otoacoustic emission (OAE) test. Participants aged 4+ years who failed this test in both ears or for whom an OAE reading could not be taken underwent a manual pure-tone audiometry (PTA) screening...
January 18, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28101972/an-evaluation-of-the-quality-of-evidence-available-to-inform-current-bone-conduction-hearing-device-national-policy
#2
Rishi Mandavia, Alex Carter, Nadine Haram, Elias Mossialos, Anne Gm Schilder
OBJECTIVES: In 2016 NHS England published the commissioning policy on Bone Conducting Hearing Devices (BCHDs). This policy was informed by updated evidence on the clinical and cost effectiveness of BCHDs as well as by the 2013 Bone Anchored Hearing Aid (BAHA) policy. Commissioning policies set the criteria for service delivery and therefore have a major impact on the care received by patients. It is important that stakeholders have a good appreciation of the available evidence informing policy, since this will promote engagement both with the policy as well as with future research leading on from the policy...
January 18, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28096187/gprasp2-a-novel-causative-gene-mutated-in-an-x-linked-recessive-syndromic-hearing-loss
#3
Guangqian Xing, Jun Yao, Chunyu Liu, Qinjun Wei, Xuli Qian, Lingxin Wu, Yajie Lu, Xin Cao
BACKGROUND: A substantial amount of nuclear genes have been identified to be implicated in genetic hearing loss, while X-linked hearing loss is genetically heterogeneous and relatively infrequent. OBJECTIVE: To identify the causative gene mutation in a five-generation Chinese family with an X-linked recessive syndromic hearing loss (SHL). METHODS: Targeted X-chromosome exome sequencing was conducted, and cosegregation analysis was performed in the members of the affected family...
January 17, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28092097/complications-and-parent-satisfaction-in-pediatric-osseointegrated-bone-conduction-hearing-implants
#4
Kenny H Chan, Dexiang Gao, Emily L Jensen, Gregory C Allen, Stephen P Cass
OBJECTIVE: To assess long-term complication rate and parental satisfaction of osseointegrated bone conduction hearing implants (OBCHIs). STUDY DESIGN: Retrospective chart review of children undergoing OBCHIs. METHODS: A retrospective chart review of children undergoing OBCHIs for the treatment of conductive, mixed, and single-sided sensorineural hearing loss in children. RESULTS: Forty-five subjects were identified with 0...
January 16, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28087418/degeneration-of-auditory-nerve-fibers-in-guinea-pigs-with-severe-sensorineural-hearing-loss
#5
Steven Kroon, Dyan Ramekers, Emma M Smeets, Ferry G J Hendriksen, Sjaak F L Klis, Huib Versnel
Damage to and loss of the organ of Corti leads to secondary degeneration of the spiral ganglion cell (SGC) somata of the auditory nerve. Extensively examined in animal models, this degeneration process of SGC somata following deafening is well known. However, degeneration of auditory nerve axons, which conduct auditory information towards the brainstem, and its relation to SGC soma degeneration are largely unknown. The consequences of degeneration of the axons are relevant for cochlear implantation, which is applied to a deafened system but depends on the condition of the auditory nerve...
January 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/28087093/audiologic-and-radiologic-findings-in-cochlear-hypoplasia
#6
Betul Cicek Cinar, Merve Ozbal Batuk, Emel Tahir, Gonca Sennaroglu, Levent Sennaroglu
OBJECTIVE: The aim of the current study is to evaluate audiologic and radiologic findings of cochlear hypoplasia which is a subgroup of inner ear malformations. METHODS: This study was a prospective clinical study and based on voluntary participation from cases with cochlear hypoplasia diagnosis. The study was conducted at Hacettepe University, Department of Otolaryngology, Head and Neck Surgery and Department of Audiology. Subjects were selected from an inner ear malformations database...
January 10, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28079680/middle-ear-sound-transmission-under-normal-damaged-repaired-and-reconstructed-conditions
#7
Wei Dong, Ying Tian, Xin Gao, Timothy T K Jung
HYPOTHESIS: We hypothesize that current clinical treatment strategies for the disarticulated or eroded incus have the effect of combining the incus and stapes of the human middle ear (ME) into one rigid structure, which, while capable of adequately transmitting lower-frequency sounds, fails for higher frequencies. BACKGROUND: ME damage causes conductive hearing loss (CHL) and while great progress has been made in repairing or reconstructing damaged MEs, the outcomes are often far from ideal...
January 10, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28079678/sound-localization-in-patients-with-congential-unilateral-conductive-hearing-loss-with-a-transcutaneous-bone-conduction-implant
#8
Erich Vyskocil, Rudolfs Liepins, Alexandra Kaider, Michaela Blineder, Sasan Hamzavi
OBJECTIVE: There is no consensus regarding the benefit of implantable hearing aids in congenital unilateral conductive hearing loss (UCHL). This study aimed to measure sound source localization performance in patients with congenital UCHL and contralateral normal hearing who received a new bone conduction implant. STUDY DESIGN: Evaluation of within-subject performance differences for sound source localization in a horizontal plane. SETTING: Tertiary referral center...
January 10, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28079417/the-experiences-of-black-and-minority-ethnic-nurses-working-in-the-uk
#9
John Pendleton
Evidence suggests that black and minority ethnic (BME) midwives are more likely to face fitness to practise hearings than white registrants and BME NHS staff are less likely to be in senior positions. This literature review critically evaluates the literature published since a systematic review on the topic was conducted in 2005. It found that BME nurses and midwives, especially those who registered abroad and subsequently came to live and work in the UK are 'underemployed' and consequently expressed feelings of loss of self-confidence...
January 12, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/28077712/changes-in-properties-of-auditory-nerve-synapses-following-conductive-hearing-loss
#10
Xiaowen Zhuang, Wei Sun, Matthew A Xu-Friedman
: Auditory activity plays an important role in the development of the auditory system. Decreased activity can result from conductive hearing loss (CHL) associated with otitis media, which may lead to long-term perceptual deficits. The effects of CHL have been mainly studied at later stages of the auditory pathway, but early stages remain less examined. However, changes in early stages could be important because they would affect how information about sounds is conveyed to higher-order areas for further processing and localization...
January 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28072811/evaluation-of-the-ototoxicity-potential-of-once-daily-single-entity-hydrocodone-in-patients-with-chronic-pain-results-of-two-phase-3-clinical-studies
#11
Kathleen Campbell, J Walter Kutz, Angela Shoup, Warren Wen, Shau Yu Lynch, Ellie He, Steven R Ripa
BACKGROUND: Use/misuse of the opioid combination hydrocodone-acetaminophen has been associated with permanent hearing loss. Although reports have been rare, this potential effect can have significant detrimental effect on patients' overall quality of life. To date, the ototoxic effect of hydrocodone alone has not been systematically investigated. OBJECTIVE: In this report, we aimed to evaluate the potential ototoxicity of a novel, single-entity, once-daily, extended-release hydrocodone tablet (Hysingla® ER; HYD)...
January 2017: Pain Physician
https://www.readbyqxmd.com/read/28068651/comparison-of-alternative-coupling-methods-of-the-vibrant-soundbridge-floating-mass-transducer
#12
Susan Busch, Thomas Lenarz, Hannes Maier
The active middle ear implant Vibrant Soundbridge© provides a variety of coupling modalities of the floating mass transducer (FMT) to various structures of the ossicular chain and the round window. A retrospective analysis was performed on 125 subjects (n = 137 ears) (1) to compare the efficacy of the different FMT coupling modalities with increasing degree of hearing loss, (2) to compare the performance in speech outcome and the effective gain between the coupling types, and (3) to evaluate the risk of additional hearing loss of each coupling procedure...
January 10, 2017: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/28061926/baro-otolagia-secondary-to-cholesteatoma
#13
Revadi Govindaraju, Meenakshi Adaikappan, Raman Rajagopalan
BACKGROUND: Baro-otalgia is a common complaint among passengers in an aircraft, in particular those who had a recent upper respiratory tract infection. The underlying pathophysiology is secondary to unequal aeration of the middle ear cleft with the surrounding atmosphere and it can be explained using Boyle's Law. We describe an unusual presentation of baro-otalgia in a pilot secondary to cholesteatoma obstructing the aditus despite normal middle ear pressure equalization provided by a grommet in the ear...
January 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28060175/cochlear-nerve-deficiency-and-brain-abnormalities-in-pediatric-patients
#14
Thierry Morlet, Markian Pazuniak, Robert C O'Reilly, Vinay Kandula, Arabinda K Choudhary
HYPOTHESIS: To investigate the intracranial abnormalities present in children with cochlear nerve deficiency (CND), including abnormalities of other cranial nerves, and to describe their auditory abilities. BACKGROUND: The prevalence of CND has increased with the development of high resolution magnetic resonance imaging (MRI). There are varying degrees of CND from true aplasia to hypoplasia. The etiology of CND remains unclear and it may be associated with intracranial abnormalities in some instances...
January 4, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28057076/audiometric-findings-with-voluntary-tensor-tympani-contraction
#15
Brandon Wickens, Duncan Floyd, Manohar Bance
BACKGROUND: Tensor tympani contraction may have a "signature" audiogram. This study demonstrates audiometric findings during voluntary tensor tympani contraction. METHODS: Five volunteers possessing the ability to voluntarily contract their tensor tympani muscles were identified and enrolled. Tensor tympani contraction was confirmed with characteristic tympanometry findings. Study subjects underwent conventional audiometry. Air conduction and bone conduction threshold testing was performed with and without voluntary tensor tympani contraction...
January 5, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28056905/determinants-of-chronic-otitis-media-with-effusion-in-preschool-children-a-case-control-study
#16
Rebecca E Walker, Jim Bartley, David Flint, John M D Thompson, Edwin A Mitchell
BACKGROUND: Chronic otitis media with effusion (COME) is a prevalent upper airway infection resulting in hearing loss. The aim of this research was to determine risk factors for COME in preschool children. METHODS: A case-control design was conducted in Auckland, New Zealand from May 2011 until November 2013. The cases were children aged 3 and 4 years referred for tympanostomy tube placement due to a diagnosis of COME (n = 178). The controls were a random sample of healthy children aged 3 and 4 years from primary care practices (n = 209)...
January 6, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28056267/-association-between-eye-absent-homolog-4-gene-polymorphisms-and-occupational-noise-induced-hearing-loss
#17
Q Y Yang, X R Xu, J Jiao, Y X Zheng, L H He, S F Yu, G Z Gu, G S Chen, W H Zhou, H Wu, Y H Li, H L Zhang, Z R Zhang
Objective: To identify the association between genetic polymorphisms in the eye absent homolog 4 (EYA4) gene and noise-induced hearing loss (NIHL). Method: A nested case control study was conducted based on a cohort of noise-exposed subjects. In total, 292 cases were selected from a steel factory from 6 297 subjects during Jan 1, 2006 to Dec 12, 2015,who had an average hearing threshold of more than 40 dB(A); 584 matched control subjects for each case were designated on the basis of matched criteria including same gender, age (±5 years) and duration of exposure to noise (±2 years)...
January 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28056266/-association-between-variations-in-protocadherin-15-gene-and-occupational-noise-induced-hearing-loss
#18
X R Xu, Q Y Yang, J Jiao, Y X Zheng, L H He, S F Yu, G Z Gu, G S Chen, W H Zhou, H Wu, Y H Li, H L Zhang, Z R Zhang
Objective: The aim of this study was to investigate whether genetic variability in the protocadherin 15 (PCDH15) gene may correspond with increased susceptibility to noise-induced hearing loss (NIHL) in a Chinese population. Methods: A nested case-control study was performed that followed a cohort of 7 445 noise-exposed workers in a steel factory of Henan province in China from January 1, 2006 to December 31, 2015. In this study, 394 cases who had an average hearing threshold of more than 40 dB (A) in high frequency were defined as the case group, and 721 controls who had an average hearing threshold of less than 35 dB (A) in high frequency and less than 25 dB (A) in speech frequency were defined as the control group...
January 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28056265/-a-cohort-study-on-occupational-noise-induced-hearing-loss-in-workers-at-an-iron-and-steel-plant
#19
S F Yu, G S Chen, J Jiao, G Z Gu, H L Zhang, X M Wang, W H Zhou, H Wu, Y H Li, Y X Zheng
Objective: To analyze the incidence rate of occupational noise-induced hearing loss in noise-exposed workers in an iron and steel plant from 2006 to 2015. Methods: Using a cohort study method, workers exposed to occupational noise from Jan 1, 2006 to Dec 12, 2015 were followed up and the pure tone hearing test was conducted. In total, 6 297 subjects completed two or more physical checks and the pure tone hearing test and were included in the analysis. The noise exposure level at the workplace and the equivalent continuous A-weighted sound pressure level for workers was monitored and the cumulative noise exposure dose was evaluated...
January 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28051987/traumatic-hearing-loss-in-the-context-of-blast-related-tympanic-membrane-perforation
#20
Max D Pusz, Jon Robitschek
OBJECTIVE: Identify associated clinical factors and characterize the various forms of hearing loss in the context of blast-related traumatic tympanic membrane (TM) perforation sustained in the combat setting. METHODS: A prospective study of 41 patients who sustained a TM perforation secondary to blast injury between 2010 and 2012 while serving in combat. Clinical examinations and audiograms were obtained for all patients by a single-institution Otolaryngology service with comparative data generated from review of pre and post-trauma hearing screens...
January 2017: Military Medicine
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