Preventing Collapse of External Auditory Meatus During Audiometry

Pearlman, Ronald C.

doi:10.1001/archotol.1975.00780400044012

Cited by 6 publications

(6 citation statements)

References 6 publications

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“…A marked reduction in the canal airway, without occlusion of the EAM, was defined in this study as "narrowing". The term "collapse" was restricted to the condition of total occlusion, in agreement with definitions presented by other authors 4,11 . This terminological option is based on the potential differences between the effects of an EAM collapse and narrowing in the results of audiological exams.…”

Section: Discussionmentioning

confidence: 67%

“…It is recommended to use a light source such as an otoscope, especially to check the condition in dark-skinned individuals. Several studies describe and quantify the effects of collapse on various types of audiological tests, and indicate strategies for managing the problem, consequently avoiding errors in audiological diagnosis [4][5][6][7]10,11,13,16,17,19,20,23 .…”

Section: Discussionmentioning

confidence: 99%

“…In threshold tone audiometry specifically, the collapse of the external acoustic meatus can alter airway thresholds, resulting in a spurious conductive component of hearing loss, from 5 to 50 dB, predominantly affecting high frequencies 6 . Errors in audiological diagnosis resulting from collapse interference can be avoided by prior identification of vulnerable cases, allowing the use of appropriate techniques to keep the auditory canal open 5,6,[10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

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Ear canal collapse prevalence and associated factors among users of a center of prevention and rehabilitation for disabilities

Dourado¹,

Corona

Ferrite

2017

Rev. CEFAC

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Purpose: to investigate the prevalence of the ear canal collapse when using supra--aural earphones and to verify if this event is influenced by sex, age, color of the skin and prominent ear. Methods: the collapse was assessed by a visual inspection after the positioning of a detached cushion, pressured against the external ear.Results: a total of 436 individuals, aged 3 to 97 years, participated in the study. Ear canal collapse was observed in 11.4% of the subjects, being mostly bilateral (90.0%). The prevalence ranged from 6.3% to 36.6% across age groups. Males, aged 65 years or above and presence of prominent ear were independently identified as associated factors for the occurrence of ear canal collapse (p<0.05). Despite a higher prevalence for those self-identified as white skinned when compared to non-whites, the difference was not statistically significant. Conclusion: the ear canal collapse, when supra-aural earphones are used, is more likely to occur in men, in elderly people, and among those with prominent ears. The prevalence of the event in this population raises the necessity of a careful examination, previous to any evaluation using supra-aural earphones.

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Section: Discussionmentioning

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ear canal collapse prevalence and associated factors among users of a center of prevention and rehabilitation for disabilities

Dourado¹,

Corona

Ferrite

2017

Rev. CEFAC

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“…In order to avoid threshold inaccuracies due to ear canal collapse, several measures have been recommended. Pearlman (1975) suggested otoscopic examination prior to audiometry in order to identify narrow (i.e. 'at risk') or already collapsed ear canals and observation of the effect on canal patency of pressing the pinna against the head, i.e.…”

Section: Discussionmentioning

confidence: 99%

Misdiagnosis of hearing loss due to ear canal collapse: a report of two cases

Mahoney

Luxon

1996

J. Laryngol. Otol.

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Collapse of the external auditory meatus during audiometry can lead to spuriously increased hearing thresholds being obtained, particularly at high frequencies, and may simulate conditions such as noise-induced hearing loss, presbyacusis and retrocochlear pathology. Consequently, inappropriate investigations and management may be undertaken. Two patients with elevated thresholds secondary to ear canal collapse are described. The implications of initially failing to identify the true nature of their 'hearing losses' are highlighted and strategies to avoid such pitfalls are discussed.

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“…A literatura aponta várias maneiras de se evitar o colabamento do meato acústico externo (MAE) durante o teste audiométrico: colocação de tubos de polietileno no interior do MAE 4,7,10,14 ; utilização de enchimento de gaze fortemente enrolado atrás do pavilhão auricular antes da colocação do fone 4,7 ; manutenção dos fones supra-aurais em leve contato com o pavilhão auricular; utilização de audiometria em campo livre; utilização de molde de orelha e utilização de fone de inserção 15,16 .…”

Section: Introductionunclassified

Utilização de uma manobra específica para evitar alterações dos limiares auditivos causadas pelo colabamento do meato acústico externo

Amaral¹,

Ferreira

Dias

2008

Rev. CEFAC

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OBJETIVO: verificar se a utilização de uma manobra de reposicionamento dos fones em caso de suspeita de colabamento pode alterar os limiares auditivos nas freqüências altas, melhorando-os. MÉTODOS: participaram do estudo 89 indivíduos com idades entre 18 e 35 anos, e que apresentavam diferença maior ou igual a 10 dB NA nos limiares das freqüências de 6000 e 8000 Hz em relação à freqüência de 4000 Hz. Foi realizado o re-teste dos limiares auditivos nas freqüências de 4000, 6000 e 8000 Hz, a partir do reposicionamento dos fones e utilização de manobra específica, que consistiu em orientar o paciente, pedindo ao mesmo que segurasse o fone bem próximo à orelha, sem pressionála, evitando, desta forma, o colabamento do meato acústico externo. RESULTADOS: de acordo com os dados obtidos por meio deste estudo, pôde ser verificada melhora significativa dos limiares auditivos com a utilização da manobra descrita neste estudo em 60,7% dos indivíduos avaliados. CONCLUSÃO: a partir dos resultados, foi possível verificar que o colabamento do meato acústico externo, causado pela pressão dos fones pode interferir nos resultados das audiometrias tonais, bem como foi possível observar a eficácia da manobra descrita neste estudo para minimizar interferência deste fenômeno.

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Preventing Collapse of External Auditory Meatus During Audiometry

Cited by 6 publications

References 6 publications

Ear canal collapse prevalence and associated factors among users of a center of prevention and rehabilitation for disabilities

Ear canal collapse prevalence and associated factors among users of a center of prevention and rehabilitation for disabilities

Misdiagnosis of hearing loss due to ear canal collapse: a report of two cases

Utilização de uma manobra específica para evitar alterações dos limiares auditivos causadas pelo colabamento do meato acústico externo

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