Identification of Middle Ear Effusion by Aural Acoustic Admittance and Otoscopy

Nozza, Robert J.; Bluestone, Charles D.; Kardatzke, David; Bachman, Ruth Z.

doi:10.1097/00003446-199408000-00005

Cited by 95 publications

(95 citation statements)

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“…21 Others have reported that agreement between audiologist and otolaryngologist diagnoses was validated, but without providing supporting data. 24, 25 The sensitivity we found was lower than in two earlier, smaller studies -one comparing diagnoses by an audiologist and a nurse practitioner (171 children) 26 and another comparing acoustic admittance by audiologists with tympanometry (50 children) 27 -but our calculated specificity (95.4% at the ear level, 93.6% at the child level) was higher than reported for those studies.…”

contrasting

confidence: 83%

Agreement between diagnoses of otitis media by audiologists and otolaryngologists in Aboriginal Australian children

Gunasekera

Miller

Burgess

et al. 2018

Medical Journal of Australia

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contrasting

confidence: 83%

Agreement between diagnoses of otitis media by audiologists and otolaryngologists in Aboriginal Australian children

Gunasekera

Miller

Burgess

et al. 2018

Medical Journal of Australia

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“…Tympanometric measurement of acoustic admittance, using a 226-Hz stimulus, is a standard procedure in audiology to assess middle-ear functioning ͑e.g., Margolis and Hunter, 2000͒. While differing in their degree of diagnostic relevance, commonly evaluated tympanometric measures include tympanometric peak pressure ͑TPP͒, peak-compensated static acoustic admittance, acoustic equivalent volume, and tympanometric width ͑ASHA, 1997; Nozza et al, 1994;Shanks et al, 1988͒. Patterns in conductance and susceptance tympanograms obtained at 678 Hz and 1 kHz can also be used to identify various middle-ear pathologies ͑Vanhuyse, 1975; Margolis and Hunter, 2000͒.…”

Section: Introductionmentioning

confidence: 99%

Wideband absorbance tympanometry using pressure sweeps: System development and results on adults with normal hearing

Liu

Sanford

Ellison

et al. 2008

The Journal of the Acoustical Society of America

108

122

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A system with potential for middle-ear screening and diagnostic testing was developed for the measurement of wideband energy absorbance ͑EA͒ in the ear canal as a function of air pressure, and tested on adults with normal hearing. Using a click stimulus, the EA was measured at 60 frequencies between 0.226 and 8 kHz. Ambient-pressure results were similar to past studies. To perform tympanometry, air pressure in the ear canal was controlled automatically to sweep between −300 and 200 daPa ͑ascending/descending directions͒ using sweep speeds of approximately 75, 100, 200, and 400 daPa/ s. Thus, the measurement time for wideband tympanometry ranged from 1.5 to 7 s and was suitable for clinical applications. A bandpass tympanogram, calculated for each ear by frequency averaging EA from 0.38 to 2 kHz, had a single-peak shape; however, its tympanometric peak pressure ͑TPP͒ shifted as a function of sweep speed and direction. EA estimated at the TPP was similar across different sweep speeds, but was higher below 2 kHz than EA measured at ambient pressure. Future studies of EA on normal ears of a different age group or on impaired ears may be compared with the adult normal baseline obtained in this study.

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“…Sin embargo, es difícil llevar a cabo una correcta comparación de varios parámetros timpanométricos para el diagnóstico preciso de la efusión intratimpánica, ya que no existe un valor de referencia timpanométrico definido para esta patología cuando el timpanograma arroja una curva tipo "A". En este contexto, el diagnóstico de la efusión por otoscopia o paracentesis es usado como un estándar para la validez de los resultados de la timpanometría [11][12][13] . El objetivo de este estudio fue establecer valores de normalidad de GT y AT en niños de 4 a 6 años, según sexo.…”

Section: Discussionunclassified

Gradiente y ancho del timpanograma en niños de 4 a 6 años

2009

Rev. chil. pediatr.

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Tympanogram gradient and width in Children 4 to 6 years-oldBackground: Impedanciometry is a sensitive test that allows the diagnosis of intratimpanic effusion. Both tympanogram gradient (TG) and tympanogram width (TW) can be obtained from it. Usually, international reference values for these variables are used, but their distribution in chilean pediatric population remains uncertain. Objective: Establish normal values for these parameters in chilean children 4 to 6 years-old. Method: This study was performed at the Otorhinolaryngology Service of Hospital Militar in Santiago, contemplating all chilean army personnel children, both sexes, 4 to 6 years-old who assisted to the center between March and June 2003. 180 children were evaluated by anamnesis, otoscopy, audiometry and impedanciometry. Results: Normal values for TG were determined with a 95% confidence interval. These were 0,21 to 0,62 for girls and 0,22 to 0,57 for boys. Percentiles were determined for TW, where its normal value can be estimated in our population by means of its inverse, with significative correlation with TG. Conclusion:These normal values will improve impedanciometry accuracy in the diagnosis of intratimpanic effusion, at the moment based on timpanometric shape and compliance peak.

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Identification of Middle Ear Effusion by Aural Acoustic Admittance and Otoscopy

Cited by 95 publications

References 0 publications

Agreement between diagnoses of otitis media by audiologists and otolaryngologists in Aboriginal Australian children

Agreement between diagnoses of otitis media by audiologists and otolaryngologists in Aboriginal Australian children

Wideband absorbance tympanometry using pressure sweeps: System development and results on adults with normal hearing

Gradiente y ancho del timpanograma en niños de 4 a 6 años

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