Artykuły w czasopismach: „Conductive hearing loss”

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Djalilian, Hamid R., Brooke Sarna i Mehdi Abouzari. "Symptom: Conductive Hearing Loss". Hearing Journal 73, nr 8 (sierpień 2020): 6. http://dx.doi.org/10.1097/01.hj.0000695844.29036.91.

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Gunnarson, Adele D., i Terese Finitzo. "Conductive Hearing Loss During Infancy". Journal of Speech, Language, and Hearing Research 34, nr 5 (październik 1991): 1207–15. http://dx.doi.org/10.1044/jshr.3405.1207.

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Long-term effects on auditory electrophysiology from early fluctuating hearing loss were studied in 27 children, aged 5 to 7 years, who had been evaluated originally in infancy. For controls (Group A), infant auditory brain stem responses (ABRs) were normal from birth to age 2 years. A second group (Group B) had intermittent conductive hearing loss. A third group (Group C) had more abnormal ABRs during infancy than Group B and more severe and frequent conductive hearing loss. For this follow-up study, all children had normal peripheral hearing at test. ABRs were obtained to monaural and binaural stimuli. Binaural interaction (BI) in the ABR was assessed in difference traces, derived by subtracting summed binaural from summed monaural waveforms.Controls differed from both groups with early hearing loss for wave III and wave V latencies and interpeak I–III and I–V latencies. There was a significant difference in the presence of BI. Eight of 9 A subjects and 8 of 9 B subjects, but only 4 of 9 C subjects, had demonstrable BI. Findings suggest that early fluctuating hearing loss disrupts later auditory brain stem electrophysiology.

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Chole, Richard A., Timothy E. Hullar i Lisa G. Potts. "Conductive Component After Cochlear Implantation in Patients With Residual Hearing Conservation". American Journal of Audiology 23, nr 4 (grudzień 2014): 359–64. http://dx.doi.org/10.1044/2014_aja-14-0018.

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Purpose Changes in auditory thresholds following cochlear implantation are generally assumed to be due to damage to neural elements. Theoretical studies have suggested that placement of a cochlear implant can cause a conductive hearing loss. Identification of a conductive component following cochlear implantation could guide improvements in surgical techniques or device designs. The purpose of this study is to characterize new-onset conductive hearing losses after cochlear implantation. Method In a prospective study, air- and bone-conduction audiometric testing were completed on cochlear implant recipients. An air–bone gap equal to or greater than 15 dB HL at 2 frequencies determined the presence of a conductive component. Results Of the 32 patients with preoperative bone-conduction hearing, 4 patients had a new-onset conductive component resulting in a mixed hearing loss, with air-conduction thresholds ranging from moderate to profound and an average air–bone gap of 30 dB HL. One had been implanted through the round window, 2 had an extended round window, and 1 had a separate cochleostomy. Conclusions Loss of residual hearing following cochlear implantation may be due in part to a conductive component. Identifying the mechanism for this conductive component may help minimize hearing loss. Postoperative hearing evaluation should measure both air- and bone-conduction thresholds.

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Chakkal, Dr Hamjol Singh. "Conductive Hearing Loss Due to a Dehiscent Facial Nerve". Journal of Medical Science And clinical Research 05, nr 01 (24.01.2017): 15926–29. http://dx.doi.org/10.18535/jmscr/v5i1.111.

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Payne, Thomas, i Gentle Wong. "Hearing loss: Conductive versus sensorineural". InnovAiT: Education and inspiration for general practice 15, nr 4 (8.01.2022): 218–25. http://dx.doi.org/10.1177/17557380211070030.

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Hearing loss has a significant impact on quality of life, and may even compromise an individual’s ability to work and their safety – we use our hearing to constantly detect and react to environmental hazards around us. Hearing loss can have a profound impact on a person’s life. This is especially true for certain patient groups. For instance, the elderly, and those with co-existing problems that affect their ability to communicate (such as dementia, cerebrovascular disease or psychiatric disorders). Even those without co-morbidities suffer the burden of disease where communication is impaired: the young who are developing their speech and language skills and adults with language barriers or other impediments to their speech. The hearing apparatus is made up of conductive and sensorineural pathways, which may be affected by pathology, leading to deafness. This article describes the aetiology of conductive and sensorineural deafness, details the relevant clinical assessment and outlines management strategies in community practice.

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Park, Keehyun, i Yun-Hoon Choung. "Treatment of Conductive Hearing Loss". Journal of Clinical Otolaryngology Head and Neck Surgery 14, nr 2 (listopad 2003): 188–97. http://dx.doi.org/10.35420/jcohns.2003.14.2.188.

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Samy, Ravi, Nikolas Blevins, Eric Kraus, Lorne Parnes i Brian Westerberg. "Treating COM Conductive Hearing Loss". Otolaryngology–Head and Neck Surgery 143, nr 2_suppl (sierpień 2010): P33—P34. http://dx.doi.org/10.1016/j.otohns.2010.06.680.

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Lloyd, Caroline A., Brianne L. Wehner i Regina K. Fleming. "Conductive Hearing Loss: A Case Report". AAO Journal 31, nr 3 (1.09.2021): 27–31. http://dx.doi.org/10.53702/2375-5717-31.3.27.

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Abstract In this case report, osteopathic manipulative treatment restored hearing to an 8-year-old female suffering from conductive hearing loss. Numerous factors can result in hearing loss. In children and adolescents, mild or greater hearing loss occurs with a prevalence of 3.1%.1 Current osteopathic literature focuses on conductive hearing loss due to middle ear effusion (MEE).This case report examines an 8-year-old female presumed to have permanent conductive hearing loss without MEE after a traumatic ATV accident. The use of osteopathic manipulative treatment (OMT) resulted in complete resolution of the patient’s conductive hearing loss. To the authors’ knowledge, this is the first case report documenting the successful use of OMT to treat conductive hearing loss without MEE. Being able to recognize and understand the connection between the primary respiratory mechanism (PRM), which includes the cranial bones and nerves, allows an osteopathic physician to provide a unique approach to patient care and the use of OMT as a treatment modality for conductive hearing loss should be considered.

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Estrem, Scott A., i Pete S. Batra. "Conductive hearing loss associated with pressure equalization tubes". Otolaryngology–Head and Neck Surgery 122, nr 3 (marzec 2000): 349–51. http://dx.doi.org/10.1067/mhn.2000.102182.

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Pressure equalization (PE) tube placement traditionally has been used to lessen conductive hearing loss with chronic middle ear effusion. It is assumed that the small diameter of the tube should not interfere with the conduction of sound. In this article we present 5 patients in whom placement of a PE tube resulted in significantly worse conductive hearing. Occlusion of the PE tube with cigarette paper or Gelfoam improved hearing, as documented with audiometry. The average conductive hearing losses attributable to the ventilation tube for this series of patients were 22, 17, 15, 13, 4, and 10 dB at the frequencies of 250, 500, 1000, 2000, 4000, and 8000 Hz, respectively. This amount of change attributable to PE tubes in this small selection of patients is much greater than would be commonly appreciated. We conclude that the opening in the tympanic membrane provided by PE tubes can potentially result in a significant conductive hearing loss. Discussion includes those conditions in which reduced hearing may be more likely to occur.

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Estrem, Scott A., i Pete S. Batra. "Conductive Hearing Loss Associated with Pressure Equalization Tubes". Otolaryngology–Head and Neck Surgery 122, nr 3 (marzec 2000): 349–51. http://dx.doi.org/10.1016/s0194-5998(00)70046-5.

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Pressure equalization (PE) tube placement traditionally has been used to lessen conductive hearing loss with chronic middle ear effusion. It is assumed that the small diameter of the tube should not interfere with the conduction of sound. In this article we present 5 patients in whom placement of a PE tube resulted in significantly worse conductive hearing. Occlusion of the PE tube with cigarette paper or Gelfoam improved hearing, as documented with audiometry. The average conductive hearing losses attributable to the ventilation tube for this series of patients were 22, 17, 15, 13, 4, and 10 dB at the frequencies of 250, 500, 1000, 2000, 4000, and 8000 Hz, respectively. This amount of change attributable to PE tubes in this small selection of patients is much greater than would be commonly appreciated. We conclude that the opening in the tympanic membrane provided by PE tubes can potentially result in a significant conductive hearing loss. Discussion includes those conditions in which reduced hearing may be more likely to occur.

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Mackersie, Carol L., i David R. Stapells. "Auditory Brainstem Response Wave I Prediction of Conductive Component in Infants and Young Children". American Journal of Audiology 3, nr 2 (lipiec 1994): 52–58. http://dx.doi.org/10.1044/1059-0889.0302.52.

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Wave I latencies were used to predict the magnitude of conductive components in 80 infants and young children (122 ears) with normal hearing, conductive hearing loss due to otitis media or aural atresia, sensorineural hearing loss, and mixed hearing loss. Two prediction methods were used. The first method based predictions on a 0.03-ms wave I latency delay for each decibel of conductive hearing loss. The second method was based on a regression analysis of wave I latency delays and the magnitude of conductive component for the subjects in this study with normal cochlear status. On average, these prediction methods resulted in prediction errors of 15 dB or greater in over one-third of the ears with hearing loss. Therefore, the clinical use of wave I latencies to predict the presence or magnitude of conductive impairment is not recommended for infants and young children. Instead, bone-conduction ABR testing is recommended as a direct measure of cochlear status when behavioral evaluation is not possible.

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Lofgren, Sarah, Martha Montgomery, Nathan Yueh, Alice Namudde, Joshua Rhein, Mahsa Abassi, Abdu Musubire, David Meya i David Boulware. "Hearing Loss in Cryptococcal Meningitis Survivors". Open Forum Infectious Diseases 4, suppl_1 (2017): S306. http://dx.doi.org/10.1093/ofid/ofx163.709.

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Abstract Background Hearing loss is a known complication cryptococcal meningitis (CM); however, there is a paucity of data. We aimed to describe hearing loss in CM survivors. Methods We assessed hearing via audiometry 8 and 18 weeks after diagnosis of CM in Kampala, Uganda from 2015-2016. We measured at 0.5, 1, 2, 4 Hz. Normal hearing was defined as minimum hearing level at <25 decibels (dB), mild at 25-39, moderate hearing at 40–69, severe at 70–89, and profound hearing loss at 90+ dB. We compared clinical factors, fungal burden, and CSF parameters to evaluate for factors associated with improvement (change in hearing loss category). Results We evaluated hearing symptoms via audiogram at week 8 (n = 117) and week 18 (n = 98). At 8-weeks, 6 (5%) participants had normal hearing, 36 (31%) had mild hearing loss, 72 (62%) had moderate hearing loss, 3 (3%) had severe hearing loss and none had profound hearing loss. Of those with moderate/severe/profound loss at week 8, 63 (54%) had mixed conductive + sensorineural hearing loss, 15 (13%) had sensorineural hearing loss, and 14 (12%) had conductive hearing loss. An additional 19 (16%) had sensorineural loss but unknown air conduction, and 3 (3%) did not have sensorineural loss but unknown air conduction. We compared risk factors for hearing loss summarized in Table 1. We assessed 66 participants who had repeated audiograms at week 8 and week 18. Of those 31 (47%) had no change, 30 (45%) had improvement and 5 (8%) had worsening. Conclusion Moderate/severe hearing loss was common 8 weeks after diagnosis of CM. More than half had mixed hearing loss and 20% had conductive hearing loss which represents a higher incidence than noted in other types of meningitis. The data is complicated by advanced HIV. Further research is needed evaluating immunologic factors causes hearing impairment in those who survived CM. Disclosures All authors: No reported disclosures.

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Penn, Terrey Oliver, D. Wesley Grantham i Judith S. Gravel. "Simulated Conductive Hearing Loss in Children". Journal of the American Academy of Audiology 15, nr 04 (kwiecień 2004): 300–310. http://dx.doi.org/10.3766/jaaa.15.4.4.

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Otitis media with effusion (OME) often results in hearing loss for children with the condition. In order to provide appropriate and effective audiologic management, it is important to understand the impact of OME on speech recognition ability when hearing loss is present. This study examined the speech recognition abilities of normal-hearing six- and seven-year-old children (n = 12) and adults (n = 12) using monosyllabic words and nonsense syllables presented at two levels of simulated conductive hearing loss characteristic of OME. Average speech recognition scores decreased as the degree of simulated conductive hearing loss increased. Both age groups scored significantly poorer for nonsense syllables than for monosyllabic words. In general, the children performed more poorly than the adults with the exception of the easiest listening condition for word stimuli. Furthermore, children appeared less able than adults to use their knowledge of familiar words to improve performance. These findings suggest that rehabilitative strategies may best be focused on combining familiarization techniques and amplification options.

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Vijayendra, H., i Bhavin Parikh. "Bone Conduction Improvement After Surgery for Conductive Hearing Loss". Indian Journal of Otolaryngology and Head & Neck Surgery 63, nr 3 (23.02.2011): 201–4. http://dx.doi.org/10.1007/s12070-011-0130-0.

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Snik, Ad, Martijn Agterberg i Arjan Bosman. "How to Quantify Binaural Hearing in Patients with Unilateral Hearing Using Hearing Implants". Audiology and Neurotology 20, Suppl. 1 (2015): 44–47. http://dx.doi.org/10.1159/000380747.

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Application of bilateral hearing devices in bilateral hearing loss and unilateral application in unilateral hearing loss (second ear with normal hearing) does not a priori lead to binaural hearing. An overview is presented on several measures of binaural benefits that have been used in patients with unilateral or bilateral deafness using one or two cochlear implants, respectively, and in patients with unilateral or bilateral conductive/mixed hearing loss using one or two percutaneous bone conduction implants (BCDs), respectively. Overall, according to this overview, the most significant and sensitive measure is the benefit in directional hearing. Measures using speech (viz. binaural summation, binaural squelch or use of the head shadow effect) showed minor benefits, except for patients with bilateral conductive/mixed hearing loss using two BCDs. Although less feasible in daily practise, the binaural masking level difference test seems to be a promising option in the assessment of binaural function.

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Howard, Damien. "Intercultural Communications and Conductive Hearing Loss". First Peoples Child & Family Review 3, nr 4 (15.05.2020): 96–105. http://dx.doi.org/10.7202/1069379ar.

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Widespread conductive hearing loss among Aboriginal peoples in ﬁrst world nations has a signiﬁcant, although largely invisible impact on intercultural communication. Poor acoustics and cultural differences in communication styles compound the effect of widespread hearing loss among Aboriginal peoples. This article considers Australian research that has investigated how conductive hearing loss can impact on intercultural communication in schools and in the criminal justice system, as well as communication processes within Aboriginal families. An understanding of these issues can facilitate the development of innovative interventions that can help address Aboriginal disadvantage, especially within mainstream institutions.

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De Leenheer, Els M. R., Anne-Marie Kuijpers-Jagtman, Rob C. A. Sengers, Grétel G. Oudesluijs, Gudrun A. Rappold i Cor W. R. J. Cremers. "Congenital Conductive Hearing Loss in Dyschondrosteosis". Annals of Otology, Rhinology & Laryngology 112, nr 2 (luty 2003): 153–58. http://dx.doi.org/10.1177/000348940311200208.

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Conductive hearing loss was detected in a boy with a previous diagnosis of dyschondrosteosis. Dyschondrosteosis is a rare inherited condition characterized by mesomelic dwarfism and Madelung's deformity. The syndrome can be caused by mutations in the SHOX gene, and in that case, the pattern of inheritance is pseudoautosomal dominant. Indeed, SHOX mutation analysis in our patient revealed a deletion. The combination of dyschondrosteosis and conductive hearing loss has been reported in 2 previous cases. In our patient, exploratory tympanotomy revealed ankylosis of the stapes and a malformed incus. A substantial gain in hearing threshold was obtained by a stapedectomy in combination with a malleovestibulopexy.

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Karhuketo, Tapio S., Heikki J. Puhakka i Pekka J. Laippala. "Tympanoscopy to increase the accuracy of diagnosis in conductive hearing loss". Journal of Laryngology & Otology 112, nr 2 (luty 1998): 154–57. http://dx.doi.org/10.1017/s0022215100140174.

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AbstractThe diagnosis of conductive hearing loss is usually based on audiological methods and radiology. The aim of our study was to show that there is a useful additive method to clarify the findings of diseases with conductive hearing loss.Patients (151 ears) with conductive hearing loss were examined using several methods: otomicroscopy, air- and bone-conduction threshold, pure tone average, speech threshold, speech discrimination, tympanometry and stapedial reflex and tympanoscopy.The management of the patients changed in 17 per cent of cases due to tympanoscopy. In a group with normal tympanic membrane the movement of the stapes during endoscopy was compared to stapedial reflex. Stiff stapes were found more often than an abnormal stapedial reflex.Middle ear endoscopy can increase the accuracy of diagnosis of conductive hearing loss thus enhancing decision making in the case of the patient.

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Lee, Il-Woo, Eui-Kyung Goh, Jun Jeon, Jun-Young Kim, Soo Geun Wang i Koyong-Myong Chon. "Clinical Findings of Conductive Hearing Loss". Journal of Clinical Otolaryngology Head and Neck Surgery 14, nr 2 (listopad 2003): 294–98. http://dx.doi.org/10.35420/jcohns.2003.14.2.294.

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Tange, Rinze A. "Fenestration in Congenital Conductive Hearing Loss". Otolaryngology–Head and Neck Surgery 144, nr 4 (21.03.2011): 648. http://dx.doi.org/10.1177/0194599810397587.

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Hood, Linda J., i Douglas B. Webster. "Reversible Conductive Hearing Loss in Mice". Annals of Otology, Rhinology & Laryngology 97, nr 3 (maj 1988): 281–85. http://dx.doi.org/10.1177/000348948809700314.

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Fibrin tissue adhesive was injected into the right ears of four 7-week-old CBA/J mice. Auditory brain stem responses (ABRs) were used to monitor changes in auditory sensitivity over the next 26 days, after which the middle ears and cochleas were examined histologically. Mean maximum ABR threshold shifts were as great as 36 dB, and were larger for higher frequencies than for lower. Maximum shifts occurred between 1 and 8 days; by 26 days, thresholds had returned to intensity levels observed before injection.

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Green, J. Douglas. "Surgical Solutions for Conductive Hearing Loss". Otology & Neurotology 22, nr 2 (marzec 2001): 269. http://dx.doi.org/10.1097/00129492-200103000-00028.

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Pulec, Jack L., i Christian Deguine. "Temporal Bone Fracture Conductive Hearing Loss". Ear, Nose & Throat Journal 74, nr 1 (styczeń 1995): 12. http://dx.doi.org/10.1177/014556139507400104.

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Gidley, Paul W. "Surgical Solutions for Conductive Hearing Loss". American Journal of Otolaryngology 23, nr 1 (styczeń 2002): 66. http://dx.doi.org/10.1016/s0196-0709(02)70017-3.

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Dinces, Elizabeth A. "Surgical Solutions for Conductive Hearing Loss". International Journal of Pediatric Otorhinolaryngology 60, nr 2 (sierpień 2001): 179–80. http://dx.doi.org/10.1016/s0165-5876(01)00498-0.

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Brown, JeffreyL. "Humming test for conductive hearing loss". Lancet 346, nr 8967 (lipiec 1995): 128. http://dx.doi.org/10.1016/s0140-6736(95)92150-8.

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FURUKAWA, C. "Conductive hearing loss and speech development". Journal of Allergy and Clinical Immunology 81, nr 5 (maj 1988): 1015–20. http://dx.doi.org/10.1016/0091-6749(88)90171-6.

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Norrix, Linda W., Donald W. DeYoung, Paul R. Krausman, Richard C. Etchberger i Theodore J. Glattke. "CONDUCTIVE HEARING LOSS IN BIGHORN SHEEP". Journal of Wildlife Diseases 31, nr 2 (kwiecień 1995): 223–27. http://dx.doi.org/10.7589/0090-3558-31.2.223.

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Pyle, G. Mark. "Ossicular sculpting for conductive hearing loss". Operative Techniques in Otolaryngology-Head and Neck Surgery 14, nr 4 (grudzień 2003): 237–42. http://dx.doi.org/10.1053/s1043-1810(03)00058-7.

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Ferguson, Michael O., Raymond D. Cook, Joseph W. Hall, John H. Grose i Harold C. Pillsbury. "Chronic Conductive Hearing Loss in Adults". Archives of Otolaryngology–Head & Neck Surgery 124, nr 6 (1.06.1998): 678. http://dx.doi.org/10.1001/archotol.124.6.678.

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Parikh, A. A., i G. B. Brookes. "Conductive Hearing Loss Following Retrolabyrinthine Surgery". Archives of Otolaryngology - Head and Neck Surgery 122, nr 8 (1.08.1996): 841–43. http://dx.doi.org/10.1001/archotol.1996.01890200031006.

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Lee, Jennifer W., i Manohar L. Bance. "Hearing loss". Practical Neurology 19, nr 1 (5.09.2018): 28–35. http://dx.doi.org/10.1136/practneurol-2018-001926.

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Hearing loss affects one in six people in the UK and is a significant disease burden. In addition to communication problems, there is also an association with depression and dementia. Clinical assessment with targeted history and examination can identify the characteristics and cause of hearing loss, and complementary audiological testing can confirm its type and severity. Retrocochlear screening is recommended for sudden, rapidly progressive or asymmetric sensorineural hearing loss. Medical or surgical therapies may be indicated in cases of conductive hearing loss, while hearing assistive devices and hearing aids are the mainstay of rehabilitation for sensorineural hearing loss.

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Aithal, Sreedevi, Venkatesh Aithal, Joseph Kei i Carlie Driscoll. "Conductive Hearing Loss and Middle Ear Pathology in Young Infants Referred through a Newborn Universal Hearing Screening Program in Australia". Journal of the American Academy of Audiology 23, nr 09 (październik 2012): 673–85. http://dx.doi.org/10.3766/jaaa.23.9.2.

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Background: Although newborn hearing screening programs have been introduced in most states in Australia, the prevalence of conductive hearing loss and middle ear pathology in the infants referred through these programs is not known. Purpose: This study was designed to (1) evaluate the prevalence of conductive hearing loss and middle ear pathology in infants referred by a newborn hearing screening program in north Queensland, (2) compare prevalence rates of conductive hearing loss and middle ear pathology in indigenous and nonindigenous infants, and (3) review the outcomes of those infants diagnosed with conductive hearing loss and middle ear pathology. Research Design: Retrospective chart review of infants referred to the Audiology Department of The Townsville Hospital was conducted. Study Sample: Chart review of 234 infants referred for one or both ears from a newborn hearing screening program in north Queensland was conducted. A total of 211 infants attended the diagnostic appointment. Review appointments to monitor hearing status were completed for 46 infants with middle ear pathology or conductive hearing loss. Data Collection and Analysis: Diagnosis of hearing impairment was made using an age-appropriate battery of audiological tests. Results were analyzed for both initial and review appointments. Results: Mean age at initial diagnostic assessment was 47.5 days (SD = 31.3). Of the 69 infants with middle ear pathology during initial diagnostic assessment, 18 had middle ear pathology with normal hearing, 47 had conductive hearing loss, and 4 had mixed hearing loss. Prevalence of conductive hearing loss in the newborns was 2.97 per 1,000 while prevalence of middle ear pathology (with or without conductive hearing loss) was 4.36 per 1,000. Indigenous Australians or Aboriginal and Torres Strait Islander (ATSI) infants had a significantly higher prevalence of conductive hearing loss and middle ear pathology than non-ATSI infants (35.19 and 44.45% vs 17.83 and 28.66%, respectively). ATSI infants also showed poor resolution of conductive hearing loss over time with 66.67% of ATSI infants reviewed showing persistent conductive hearing loss compared to 17.86% of non-ATSI infants. Medical management of 17 infants with persistent conductive hearing loss included monitoring, antibiotic treatment, examination under anesthesia, and grommet insertion. Conclusions: Conductive hearing loss was found to be a common diagnosis among infants referred through screening. ATSI infants had significantly higher rates of middle ear pathology and conductive hearing loss at birth and showed poor resolution of middle ear pathology over time compared to non-ATSI infants. Future research using a direct measure of middle ear function as an adjunct to the automated auditory brainstem response screening tool to distinguish conductive from sensorineural hearing loss may facilitate prioritization of infants for assessment, thus reducing parental anxiety and streamlining the management strategies for the respective types of hearing loss.

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Johnson, Earl E. "Prescriptive Amplification Recommendations for Hearing Losses with a Conductive Component and Their Impact on the Required Maximum Power Output: An Update with Accompanying Clinical Explanation". Journal of the American Academy of Audiology 24, nr 06 (czerwiec 2013): 452–60. http://dx.doi.org/10.3766/jaaa.24.6.2.

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Background: Hearing aid prescriptive recommendations for hearing losses having a conductive component have received less clinical and research interest than for losses of a sensorineural nature; as a result, much variation remains among current prescriptive methods in their recommendations for conductive and mixed hearing losses (Johnson and Dillon, 2011). Purpose: The primary intent of this brief clinical note is to demonstrate differences between two algebraically equivalent expressions of hearing loss, which have been approaches used historically to generate a prescription for hearing losses with a conductive component. When air and bone conduction thresholds are entered into hearing aid prescriptions designed for nonlinear hearing aids, it was hypothesized that that two expressions would not yield equivalent amounts of prescribed insertion gain and output. These differences are examined for their impact on the maximum power output (MPO) requirements of the hearing aid. Subsequently, the MPO capabilities of two common behind-the-ear (BTE) receiver placement alternatives, receiver-in-aid (RIA) and receiver-in-canal (RIC), are examined. Study Samples: The two expressions of hearing losses examined were the 25% ABG + AC approach and the 75% ABG + BC approach, where ABG refers to air-bone gap, AC refers to air-conduction threshold, and BC refers to bone-conduction threshold. Example hearing loss cases with a conductive component are sampled for calculations. The MPO capabilities of the BTE receiver placements in commercially-available products were obtained from hearing aids on the U.S. federal purchasing contract. Results: Prescribed gain and the required MPO differs markedly between the two approaches. The 75% ABG + BC approach prescribes a compression ratio that is reflective of the amount of sensorineural hearing loss. Not all hearing aids will have the MPO capabilities to support the output requirements for fitting hearing losses with a large conductive component particularly when combined with significant sensorineural hearing loss. Generally, current RIA BTE products have greater output capabilities than RIC BTE products. Conclusions: The 75% ABG + BC approach is more appropriate than the 25% ABG + AC approach because the latter approach inappropriately uses AC thresholds as the basis for determining the compression ratio. That is, for hearing losses with a conductive component, the AC thresholds are not a measure of sensorineural hearing loss and cannot serve as the basis for determining the amount of desired compression. The Australian National Acoustic Laboratories has been using the 75% ABG + BC approach in lieu of the 25% ABG + AC approach since its release of the National Acoustic Laboratories—Non-linear 1 (NAL-NL1) prescriptive method in 1999. Future research may examine whether individuals with conductive hearing loss benefit or prefer more than 75% restoration of the conductive component provided adequate MPO capabilities to support such restoration.

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Christensen, Lisa, Laura Smith-Olinde, Jillian Kimberlain, Gresham T. Richter i John L. Dornhoffer. "Comparison of Traditional Bone-Conduction Hearing Aids with the Baha® System". Journal of the American Academy of Audiology 21, nr 04 (kwiecień 2010): 267–73. http://dx.doi.org/10.3766/jaaa.21.4.5.

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Background: Little research exists to demonstrate efficacy and verification measures of the Baha® system versus traditional bone-conduction hearing aids. This study gives statistical data about 10 children who have used traditional bone-conduction hearing aids, Baha coupled to a Softband, and the Baha system implanted. Purpose: The purpose of this study was to compare functional gain at 500, 1000, 2000, and 4000 Hz for infants and children with bilateral conductive hearing loss who were initially fit with traditional bone-conduction devices then progressed to Baha with Softband and finally to unilateral Baha implants. Research Design: Retrospective five-year chart review. Study Sample: 10 children with bilateral conductive hearing loss due to congenital atresia and/or microtia. Participants ranged in age from 6 mo to 16 yr; three were male and seven were female. Two participants were African-American, five Caucasian, and three Hispanic. Intervention: The intervention was the Baha system used in children via a Softband or implanted as compared to traditional bone-conduction hearing aids. Data Collection and Analysis: Single-factor, repeated analyses of variance were run to examine the amount of functional gain delivered by the various devices as well as the threshold measures with each device at each frequency. Results: Participants in this study showed a statistically significant improvement when using the Baha Softband over traditional bone-conduction hearing aids. An implanted Baha has statistically as much gain as a bone-conduction transducer at all frequencies tested. Conclusions: The Baha system is a valid treatment in conductive hearing loss via a Softband or implanted. It statistically outperforms the traditional bone-conduction hearing aids and should be used as a first choice in intervention rather than a last option for inoperable conductive hearing loss.

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Moore, David R., Jemma E. Hine, Ze Dong Jiang, Hiroaki Matsuda, Carl H. Parsons i Andrew J. King. "Conductive Hearing Loss Produces a Reversible Binaural Hearing Impairment". Journal of Neuroscience 19, nr 19 (1.10.1999): 8704–11. http://dx.doi.org/10.1523/jneurosci.19-19-08704.1999.

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Ahmadzadeh, A., M. Daraei, M. Jalessi, A. A. Peyvandi, E. Amini, L. A. Ranjbar i A. Daneshi. "Hearing status in patients with rheumatoid arthritis". Journal of Laryngology & Otology 131, nr 10 (15.08.2017): 895–99. http://dx.doi.org/10.1017/s0022215117001670.

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AbstractObjective:Rheumatoid arthritis is thought to induce conductive hearing loss and/or sensorineural hearing loss. This study evaluated the function of the middle ear and cochlea, and the related factors.Methods:Pure tone audiometry, speech reception thresholds, speech discrimination scores, tympanometry, acoustic reflexes, and distortion product otoacoustic emissions were assessed in rheumatoid arthritis patients and healthy volunteers.Results:Pure tone audiometry results revealed a higher bone conduction threshold in the rheumatoid arthritis group, but there was no significant difference when evaluated according to the sensorineural hearing loss definition. Distortion product otoacoustic emissions related prevalence of conductive or mixed hearing loss, tympanometry values, acoustic reflexes, and speech discrimination scores were not significantly different between the two groups. Sensorineural hearing loss was significantly more prevalent in patients who used azathioprine, cyclosporine and etanercept.Conclusion:Higher bone conduction thresholds in some frequencies were detected in rheumatoid arthritis patients that were not clinically significant. Sensorineural hearing loss is significantly more prevalent in refractory rheumatoid arthritis patients.

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Davies, G. P., i I. J. M. Johnson. "The first reported treatment of Nager syndrome associated hearing loss with bone-anchored hearing aids: case report". Journal of Laryngology & Otology 126, nr 1 (12.10.2011): 76–78. http://dx.doi.org/10.1017/s0022215111002738.

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AbstractObjective:To report the first case of treatment of Nager syndrome associated conductive hearing loss with bone-anchored hearing aids, in a three-year-old boy.Method:Clinical case report and current literature review regarding the use of bone-anchored hearing aids in the treatment of conductive hearing loss in children.Results:A three year eight month old boy with Nager syndrome was successfully treated for conductive hearing loss using bilateral bone-anchored hearing aids.Conclusion:This is the first case report of the use of bone-anchored hearing aids to treat Nager syndrome associated conductive hearing loss. Treatment was safe and successful in this case.

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Convery, Elizabeth, Gitte Keidser, Mark Seeto, Katrina Freeston, Dan Zhou i Harvey Dillon. "Identification of Conductive Hearing Loss Using Air Conduction Tests Alone". Ear and Hearing 35, nr 1 (2014): e1-e8. http://dx.doi.org/10.1097/aud.0b013e31829e058f.

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Peyvandi, A. A., A. Jamilian i E. Moradi. "Relationship between conductive hearing loss and maxillary constriction". Journal of Laryngology & Otology 128, nr 9 (15.08.2014): 765–67. http://dx.doi.org/10.1017/s0022215114001716.

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AbstractObjective:To evaluate the relationship between conductive hearing loss and maxillary constriction.Method:A total of 120 people, aged from 7 to 40 years, who were referred to an audiologist when taking out health insurance or for school pre-registration check-up, were selected for this study. A total of 60 participants who had hearing threshold levels greater than 15 dB in both ears were chosen as the conductive hearing loss group. The remaining 60, with normal hearing thresholds of less than 15 dB, were used as the control group. All participants were referred to an orthodontic clinic. Participants who had a posterior crossbite and high palatal vault were considered to suffer from maxillary constriction.Results:There were no significant differences between the sex ratios and mean ages of the groups. However, participants with conductive hearing loss were 3.5 times more likely than controls to suffer from maxillary constriction.Conclusion:Patients who suffer from conductive hearing loss are likely to show a maxillary abnormality when examined by an orthodontist.

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Dahiya, Ravinder, Sandra Cleveland i Cliff A. Megerian. "Spondyloepiphyseal Dysplasia Congenita Associated with Conductive Hearing Loss". Ear, Nose & Throat Journal 79, nr 3 (marzec 2000): 178–82. http://dx.doi.org/10.1177/014556130007900312.

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Spondyloepiphyseal dysplasia is a disorder characterized by abnormalities of growth. Previous studies of this disorder have identified a significant incidence of associated hearing loss. Hearing loss has been reported to occur in 25 to 30% of affected patients. To date, all reports of associated hearing loss have indicated the presence of a sensorineural component. In this article, we report the case of a child who was diagnosed with spondyloepiphyseal dysplasia congenita and who was found to have a significant conductive hearing loss with a Carhart's notch, indicating the likely presence of stapes footplate fixation. We also review the diagnosis of this condition and the literature associated with hearing loss as it occurs with this disorder.

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Li, Lok-Yee Joyce, Shin-Yi Wang, Jinn-Moon Yang, Chih-Jou Chen, Cheng-Yu Tsai, Lucas Yee-Yan Wu, Te-Fang Wu i Cheng-Jung Wu. "Validation of a Personalized Hearing Screening Mobile Health Application for Persons with Moderate Hearing Impairment". Journal of Personalized Medicine 11, nr 10 (16.10.2021): 1035. http://dx.doi.org/10.3390/jpm11101035.

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Hearing impairment is a frequent human sensory impairment. It was estimated that over 50% of those aged >75 years experience hearing impairment in the United States. Several hearing impairment–related factors are detectable through screening; thus, further deterioration can be avoided. Early identification of hearing impairment is the key to effective management. However, hearing screening resources are scarce or inaccessible, underlining the importance of developing user-friendly mobile health care systems for universal hearing screening. Mobile health (mHealth) applications (apps) act as platforms for personalized hearing screening to evaluate an individual’s risk of developing hearing impairment. We aimed to evaluate and compare the accuracy of smartphone-based air conduction and bone conduction audiometry self-tests with that of standard air conduction and bone conduction pure-tone audiometry tests. Moreover, we evaluated the use of smartphone-based air conduction and bone conduction audiometry self-tests in conductive hearing loss diagnosis. We recruited 103 patients (206 ears) from an otology clinic. All patients were aged ≥20 years. Patients who were diagnosed with active otorrhea was excluded. Moderate hearing impairment was defined as hearing loss with mean hearing thresholds >40 dB. All patients underwent four hearing tests performed by a board-certified audiologist: a smartphone-based air conduction audiometry self-test, smartphone-based bone conduction audiometry self-test, standard air-conduction pure-tone audiometry, and standard bone conduction pure-tone audiometry. We compared and analyzed the results of the smartphone-based air conduction and bone conduction audiometry self-tests with those of the standard air conduction and bone conduction pure-tone audiometry tests. The sensitivity of the smartphone-based air conduction audiometry self-test was 0.80 (95% confidence interval CI = 0.71–0.88) and its specificity was 0.84 (95% CI = 0.76–0.90), respectively. The sensitivity of the smartphone-based bone conduction audiometry self-test was 0.64 (95% CI = 0.53–0.75) and its specificity was 0.71 (95% CI = 0.62–0.78). Among all the ears, 24 were diagnosed with conductive hearing loss. The smartphone-based audiometry self-tests correctly diagnosed conductive hearing loss in 17 of those ears. The personalized smartphone-based audiometry self-tests correctly diagnosed hearing loss with high sensitivity and high specificity, and they can be a reliable screening test to rule out moderate hearing impairment among the population. It provided patients with moderate hearing impairment with personalized strategies for symptomatic control and facilitated individual case management for medical practitioners.

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S., Ravi K., i Ravishankar S. N. "Traumatic perforation: determinants of conductive hearing loss". International Journal of Otorhinolaryngology and Head and Neck Surgery 3, nr 3 (24.06.2017): 592. http://dx.doi.org/10.18203/issn.2454-5929.ijohns20172583.

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Background: Traumatic perforations of the tympanic membrane are very common in day to day life and it may be due to direct or indirect source. The aim of this study is to evaluate the various factors which determine the degree of hearing loss in patients with traumatic perforation of tympanic membrane. Methods: A retrospective review was performed in 50 patients seen at the ENT department in our rural tertiary center over a period of two years between January 2015 to December 2016. The patients with history of ear trauma from various causes and with absolutely no previous history of any ear disease were included in our study. The data retrieved included parameters such as age, sex, side, cause of injury and presenting complaints such as hearing loss, earache, tinnitus, and vertigo. A detailed clinical and otoscopic examination was done to determine the size and location of the perforation. Hearing was assessed using pure tone audiometry (PTA) to determine the degree of hearing loss and to correlate with frequency, size and location of perforation. Results: A total of 50 patients with traumatic perforations of the tympanic membrane were enrolled for the study, comprising of 32 males and 18 females patients. Age of the patients ranged from12 to 65 years of age. The results showed that the most common mode of trauma was RTA (46%). Audiometry shows that the larger the tympanic membrane perforation, the larger the air–bone gap. Hearing loss was highest at the lowest frequencies and generally decreased as the frequency increased. The results also showed that there was no difference in air bone gap with relation to location of perforation (anterior vs. posterior). Conclusions: The conductive hearing loss resulting from a tympanic membrane perforation is frequency dependent, with the largest losses occurring at the lowest sound frequencies, hearing loss increases as size of the perforation increases and no relation with location of perforation.

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Phillips, Susan G., i Richard T. Miyamoto. "Congenital Conductive Hearing Loss in Apert Syndrome". Otolaryngology–Head and Neck Surgery 95, nr 4 (listopad 1986): 429–33. http://dx.doi.org/10.1177/019459988609500402.

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Acrocephalosyndactyly (Apert syndrome) is a rare cranlosynostotic syndrome characterized by acrocephaly, syndactyly of the hands and feet, and—occasionally—-conductive hearing loss. We report three cases of conductive hearing loss in Apert syndrome. One patient was found to have bilateral stapes fixation. His daughter (the second case) had chronic bilateral otitis media with effusion. The third case involved a fixed Incus and hypomobile stapes. The management of these patients and a review of the literature are presented.

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Muzzi, Enrico, Valeria Gambacorta, Ruggero Lapenna, Giulia Pizzamiglio, Sara Ghiselli, Igor Caregnato, Raffaella Marchi, Giampietro Ricci i Eva Orzan. "Audiological Performance of ADHEAR Systems in Simulated Conductive Hearing Loss: A Case Series with a Review of the Existing Literature". Audiology Research 11, nr 4 (13.10.2021): 537–46. http://dx.doi.org/10.3390/audiolres11040048.

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A new non-invasive adhesive bone conduction hearing device (ABCD) has been proposed as an alternative solution for reversible bilateral conductive hearing loss in recurrent or long-lasting forms of otitis media with effusion (OME) in children that cannot undergo surgical treatment. Our aim was to assess the effectiveness of ABCD in children with OME. Twelve normal-hearing Italian-speaking volunteers, in whom a conductive hearing loss was simulated, participated in the study. The free-field average hearing threshold was determined and, to evaluate binaural hearing skills, loudness summation and the squelch effect were assessed. Five conditions were tested: (1) unaided without earplugs, (2) unaided with bilateral earplugs, (3) aided right ear with bilateral earplugs, (4) aided left ear with bilateral earplugs, and (5) bilateral aid with bilateral earplugs. Post-hoc analysis showed a significant statistical difference between plugged, unplugged, and each aided condition. The main results were a better loudness summation and a substantial improvement of the squelch effect in the bilaterally aided. Our results suggest that ABCD is a valid treatment for patients with conductive hearing loss that cannot undergo bone conduction implant surgery. It is also important to consider bilateral aids in order to deal with situations in which binaural hearing is fundamental.

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Khan, Raphella, i Anirudh Kasliwal. "Assess the hearing of contralateral ear in patients with unilateral chronic squamosal otitis media". International Journal of Otorhinolaryngology and Head and Neck Surgery 6, nr 5 (21.04.2020): 886. http://dx.doi.org/10.18203/issn.2454-5929.ijohns20201680.

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Background: Chronic squamosal otitis media can occur due to many conditions affecting the middle ear. Most common sign of developing a chronic squamosal otitis media is formation of a retraction pocket in the tympanic membrane leading to further development of a cholesteatoma and if not treated properly, may lead to development of dangerous complication in the affected ear. These etiological factors may also affect the other ear. It is therefore very necessary to assess and diagnose the contralateral ear, so that the disease can be intervened and treated at the right time, to prevent any deterioration in hearing of the contralateral ear.Methods: The prospective study was done in 100 patients with unilateral chronic squamosal otitis media, where the contra lateral ear was examined and assessed for any hearing loss. Results: We found hearing loss in the contra lateral ear ranging from mild conductive hearing loss to sensorineural hearing loss with the maximum patients with mild conductive hearing loss (42%) and lowest in sensorineural hearing loss (1%). Conclusions: In our study, 76 patients were seen with conductive hearing loss. Out of that, 42% patients were seen with mild conductive hearing loss, 30% with moderate conductive hearing loss and 4% with severe conductive hearing loss. 20% patients were seen with normal hearing. 3% patients were seen with mixed hearing loss and only 1% patient was seen with sensorineural hearing loss in contralateral ear.

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Campbell, P. E., C. M. Harris, S. Hendricks i T. Sirimanna. "Bone conduction auditory brainstem responses in infants". Journal of Laryngology & Otology 118, nr 2 (luty 2004): 117–22. http://dx.doi.org/10.1258/002221504772784568.

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The contribution of air conduction auditory brainstem response (AC-ABR) testing in the paediatric population is widely accepted in clinical audiology. However, this does not allow for differentiation between conductive and sensorineural hearing loss. The purpose ofthis paper is to review the role of bone conduction auditory brainstem responses (BC-ABR). It is argued that despite such technical difficulties as a narrow dynamic range, masking dilemmas, stimulus artifact and low frequency underestimation of hearing loss, considerable evidence exists to suggest that BC-ABR testing provides an important contribution in the accurate assessmentof hearing loss in infants. Modification of the BC-ABR protocol is discussed and the technical difficulties that may arise are addressed, permitting BC-ABR to be used as a tool in the differential diagnosis between conductive and sensorineural hearing. Two relevant case studies are presented to highlight the growing importance of appropriate management in early identification of hearing loss. It can be concluded that BC-ABR should be adopted as a routine clinical diagnostic tool.

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Foust, A. M., D. S. Poe i C. D. Robson. "The Ossicles in Pediatric Conductive Hearing Loss". Neurographics 10, nr 5 (1.10.2020): 259–71. http://dx.doi.org/10.3174/ng.2000004.

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Congenital ossicular anomalies are important, often-missed causes of pediatric conductive hearing loss that may occur in isolation or as part of a syndrome. Accurately identifying and describing ossicular anomalies is important for determining treatment options and surgical planning. We review ossicular development, anatomy, and CT imaging findings of both nonsyndromic and syndromic congenital anomalies, including branchio-oto-renal syndrome, Treacher Collins syndrome, CHARGE (Coloboma of the eye, Heart defects, Atresia of the choanae, Retardation of growth and/or development, Genital and/or urinary abnormalities, and Ear abnormalities and deafness) syndrome, 22q11.2 deletion syndrome, hemifacial microsomia, Cornelia de Lange syndrome, and cleidocranial dysostosis.Learning Objective: Review normal anatomy and development of the ossicles, and identify imaging features of various congenital ossicular anomalies.

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Djalilian, Hamid R., Brooke Sarna i Mehdi Abouzari. "Symptom: Conductive Hearing Loss after Cholesteatoma Surgery". Hearing Journal 73, nr 7 (lipiec 2020): 20,22,23. http://dx.doi.org/10.1097/01.hj.0000689420.29323.e4.

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SCHLIEPER, ANNE, HELENA KISILEVSKY, SUSAN MATTINGLY i LOUISE YORKE. "Mild Conductive Hearing Loss and Language Development". Journal of Developmental & Behavioral Pediatrics 6, nr 2 (kwiecień 1985): 65???68. http://dx.doi.org/10.1097/00004703-198504000-00003.

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