Acoustic Impedance and Tympanometry with the Retarded: A Normative Study

Fulton, Robert T.; Lamb, Lloyd E.

doi:10.3109/00206097209089297

Cited by 10 publications

(8 citation statements)

References 10 publications

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“…Normal impedance findings included an average compliance at the tympanic membrane of 0.94 cm3, and normal (type A) tympanograms with average middle-ear pressures of -23. 5 mniH,O. Mean acoustic reflex thresholds are shown in Table I .…”

Section: Resultsmentioning

confidence: 99%

Acoustic impedance measurement in the otological assessment of multiply handicapped children

1976

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This survey investigated the use of acoustic impedance measurement on a population of multiply handicapped children and correlated the results with otoscopy. Thirty-one children were tested with an impedance meter studying tympanometry, tympanic membrane compliance, and acoustic reflex. Otoscopic examination was also scheduled for each child. The results show that 42% of children tested had some kind of middle-ear problem, mostly unrecognized at the time of this survey. There was 100% agreement between impedance and otoscopic findings. Apparently impedance audiometry can be useful for identifying middle-ear disorders in children who cannot be tested by traditional audiometric methods.

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Section: Resultsmentioning

confidence: 99%

Acoustic impedance measurement in the otological assessment of multiply handicapped children

1976

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“…Given the higher incidence of conductive and middle ear pathology in many populations with disabilities, acoustic immittance measures are critical for identifying pathologies such as otitis media, ossicular fixation, and tympanic membrane perforation. [18][19][20][21] Acoustic immittance is recognized as the best, fastest, and least expensive method of objective measurement of the middle ear, cochlea, and retrocochlear pathways. 22 In our clinical experience, current technology used in acoustic immittance assessment provides reasonably accurate information even in the most difficult-to-test individuals.…”

Section: Acoustic Immittance Measuresmentioning

confidence: 99%

“…Incidence of abnormal tympanograms is as high as 43% in developmentally disabled populations, with the highest incidence among those with craniofacial anomalies. [18][19][20][21] Compliance measures obtained during tympanometry can be helpful in identifying otosclerosis, cholesteatoma, otitis media, scarred or thickened tympanic membrane, and ossicular discontinuity. 23 Ear canal volume measurements are helpful in identifying stenosis, cerumen impaction, and tympanic membrane perforation.…”

Section: Tympanometrymentioning

confidence: 99%

“…Extensive studies have been performed to predict hearing sensitivity, especially in difficult-to-test populations. [18][19][20][21][22][23] Acoustic reflexes can be helpful in predicting the degree of sensorineural hearing loss, but not the audiometric configuration of the hearing loss. Acoustic reflexes present between 70 and 80 dB HL to pure tone stimuli probably rule out a significant degree of deafness.…”

Section: Acoustic Reflexesmentioning

confidence: 99%

“…Absent or abnormal acoustic reflex thresholds are more difficult to interpret and are consistent with most conductive pathologies, severe sensorineural hearing loss, and some retrocochlear lesions and facial nerve disorders. 19 Tympanometry and acoustic reflex testing are critical prior to completion of OAEs, given that OAEs are often absent in the presence of outer/middle ear pathology. 26…”

Section: Acoustic Reflexesmentioning

confidence: 99%

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Methods and Strategies for Audiological Assessment of Individuals Who Are Deaf-Blind with Developmental Disabilities

2003

Semin Hear

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Clients who are deaf-blind with developmental disabilities pose unique challenges to the clinician who is administering an audiological assessment. This article highlights some of these challenges. Communication strategies that can be employed when evaluating an individual who is deafblind with developmental disabilities are discussed. Functional recommendations for making the audiology office accessible are outlined. Methods for adapting standard evaluation procedures are presented. The suggested protocol for audiological assessment of this low-incidence population includes the combination of behavioral testing procedures and objective measurements, as well as functional observation in natural environments.

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Comparative study between the normally hearing child and the hard of hearing child, by acoustic impedance measurements of the ear

Gersdorff¹

1977

Arch Otorhinolaryngol

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In the first part, the author makes a comparative study of the tympanometric results obtained from the normally hearing child and the hard of hearing child. The frequency of serous otitis media is statistically higher in the deaf child. The author compares such results of tympanometry as obtained from the child, considers the contribution of this technique to the field of pediatric audiology and suggests a classification of tympanograms in terms of the probe-tone frequency of the impedancemeter. The second part concerns the acoustico-facial reflex. This study compares the recording of the stapedius reflex obtained by pure tone and Narrow-Band noise acoustic stimulation, thanks to Madsen electro-acoustic bridge, in two groups of children, the one consisting of normal hearing children and the other of children suffering from severe perception hearing loss. The study of the stapedius reflex threshold makes it possible to analyse the dynamics of the field of perception in both groups. After an analysis of the results, the author outlines the importance attributable to the study of the stapedius reflex in the child as a means of objectively examining the auditive function and a means of differential diagnosis in cases of sensorineural impairment of the hearing function.

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Acoustic Impedance and Tympanometry with the Retarded: A Normative Study

Cited by 10 publications

References 10 publications

Acoustic impedance measurement in the otological assessment of multiply handicapped children

Acoustic impedance measurement in the otological assessment of multiply handicapped children

Methods and Strategies for Audiological Assessment of Individuals Who Are Deaf-Blind with Developmental Disabilities

Comparative study between the normally hearing child and the hard of hearing child, by acoustic impedance measurements of the ear

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