scholarly journals Air and Bone Conduction Frequency-specific Auditory Brainstem Response in Children with Agenesis of the External Auditory Canal

2017 ◽  
Vol 21 (04) ◽  
pp. 318-322 ◽  
Author(s):  
Pricila Sleifer ◽  
Dayane Didoné ◽  
Ísis Keppeler ◽  
Claudine Bueno ◽  
Rudimar Riesgo
Keyword(s):  
Hearing Loss ◽  
External Auditory Canal ◽  
Conductive Hearing Loss ◽  
Bone Conduction ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses ◽  
Significant Difference ◽  
Brainstem Response ◽  
Conductive Hearing ◽  
Air Conduction

Introduction The tone-evoked auditory brainstem responses (tone-ABR) enable the differential diagnosis in the evaluation of children until 12 months of age, including those with external and/or middle ear malformations. The use of auditory stimuli with frequency specificity by air and bone conduction allows characterization of hearing profile. Objective The objective of our study was to compare the results obtained in tone-ABR by air and bone conduction in children until 12 months, with agenesis of the external auditory canal. Method The study was cross-sectional, observational, individual, and contemporary. We conducted the research with tone-ABR by air and bone conduction in the frequencies of 500 Hz and 2000 Hz in 32 children, 23 boys, from one to 12 months old, with agenesis of the external auditory canal. Results The tone-ABR thresholds were significantly elevated for air conduction in the frequencies of 500 Hz and 2000 Hz, while the thresholds of bone conduction had normal values in both ears. We found no statistically significant difference between genders and ears for most of the comparisons. Conclusion The thresholds obtained by bone conduction did not alter the thresholds in children with conductive hearing loss. However, the conductive hearing loss alter all thresholds by air conduction. The tone-ABR by bone conduction is an important tool for assessing cochlear integrity in children with agenesis of the external auditory canal under 12 months.

Hearing in acromegaly

1984 ◽  
Vol 98 (11) ◽  
pp. 1097-1101 ◽  
Author(s):  
J. A. Doig ◽  
S. Gatehouse
Keyword(s):  
Hearing Loss ◽  
Conductive Hearing Loss ◽  
Population Control ◽  
Bone Conduction ◽  
Control Sample ◽  
Pituitary Surgery ◽  
Significant Difference ◽  
Conductive Hearing ◽  
Air Conduction

AbstractFifty-six individuals with acromegaly referred for pituitary surgery were studied to determine any relationship between acromegaly and sensorineural or conductive hearing loss. Compared to a matched population control sample, no significant difference between the acromegalics and controls has been found, either for air conduction or for bone conduction. The differences between these findings and those published previously are discussed, and reasons proposed to explain the discrepancies.

Auditory Brainstem Responses in a Case of High-Frequency Conductive Hearing Loss

1985 ◽  
Vol 50 (4) ◽  
pp. 346-350 ◽  
Author(s):  
Michael P. Gorga ◽  
Jan K. Reiland ◽  
Kathryn A. Beauchaine
Keyword(s):  
Hearing Loss ◽  
High Frequency ◽  
Conductive Hearing Loss ◽  
Auditory Brainstem ◽  
Intensity Function ◽  
Auditory Brainstem Responses ◽  
Normal Limits ◽  
Interpeak Latency ◽  
Lower Limits ◽  
Conductive Hearing

Click-evoked auditory brainstem responses were measured in a patient with high-frequency conductive hearing loss. As is typical in cases of conductive hearing loss, Wave I latency was prolonged beyond normal limits. Interpeak latency differences were just below the lower limits of the normal range. The Wave V latency-intensity function, however was abnormally steep. This pattern is explained by the hypothesis that the slope of the latency-intensity function is determined principally by the configuration of the hearing loss. In cases of high-frequency hearing loss (regardless of the etiology), the response may be dominated by more apical regions of the cochlea at lower intensities and thus have a longer latency.

Auditory Brainstem Response Wave I Prediction of Conductive Component in Infants and Young Children

1994 ◽  
Vol 3 (2) ◽  
pp. 52-58 ◽  
Author(s):  
Carol L. Mackersie ◽  
David R. Stapells
Keyword(s):  
Hearing Loss ◽  
Young Children ◽  
Conductive Hearing Loss ◽  
Bone Conduction ◽  
Prediction Methods ◽  
Aural Atresia ◽  
Brainstem Response ◽  
Conductive Component ◽  
Conductive Hearing ◽  
Infants And Young Children

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.

Bone conduction auditory brainstem responses in infants

2004 ◽  
Vol 118 (2) ◽  
pp. 117-122 ◽  
Author(s):  
P. E. Campbell ◽  
C. M. Harris ◽  
S. Hendricks ◽  
T. Sirimanna
Keyword(s):  
Hearing Loss ◽  
Dynamic Range ◽  
Bone Conduction ◽  
Low Frequency ◽  
Paediatric Population ◽  
Auditory Brainstem ◽  
Sensorineural Hearing ◽  
Auditory Brainstem Responses ◽  
Brainstem Response ◽  
Narrow Dynamic Range

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.

Auditory Brainstem Responses in Children with Otitis Media with Effusion

1980 ◽  
Vol 89 (3_suppl) ◽  
pp. 200-206 ◽  
Author(s):  
Thomas J. Fria ◽  
Diane L. Sabo
Keyword(s):  
Hearing Loss ◽  
Otitis Media ◽  
Pure Tone ◽  
Conductive Hearing Loss ◽  
Otitis Media With Effusion ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses ◽  
School Age Children ◽  
School Age ◽  
Conductive Hearing

Auditory brainstem responses (ABR) were recorded in 14 infants and toddlers and 12 school-age children with a previous history of recurrent otitis media with effusion (OME), or otoscopic and tympanometric evidence of persistent OME, or both. ABR tests were performed immediately before and after myringotomy and tympanostomy tube insertion in the younger subjects. For the school-age children, ABR tests were performed following otoscopy, tympanometry, and pure tone audiometry. The results demonstrate that the latency of both wave I and wave V of the ABR was sensitive (82% and 100%, respectively) to the presence of OME. Wave I also identified the absence of OME (specificity = 100%) whereas wave V did not (specificity = 25%). ABR latency was significantly decreased postoperatively in ears found to have OME, but not in ears found to have no OME. In the school-age subjects the ABR was used to predict the conductive hearing loss at 4000 Hz with less than a 20 dB error in virtually all subjects. The ABR latency delay was also found to be related to conductive hearing impairment at lower pure tone frequencies and to the average conductive loss at a variety of pure tone frequencies. Predictions of the presence of a conductive hearing loss from these relationships promise to be impressively accurate. The results suggest that the ABR can be a valuable tool for detecting the presence of conductive hearing impairment in infants and young children suspected to have OME and perhaps as an estimate of the degree of impairment.

Is the Conductive Hearing Loss in NOG-Related Symphalangism Spectrum Disorder Congenital?

ORL ◽  
2021 ◽  
pp. 1-7
Author(s):  
Takahiro Nakashima ◽  
Akira Ganaha ◽  
Shougo Tsumagari ◽  
Takeshi Nakamura ◽  
Yuusuke Yamada ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Family History ◽  
Conductive Hearing Loss ◽  
Hearing Threshold ◽  
Auditory Brainstem ◽  
Spectrum Disorder ◽  
Hearing Level ◽  
Success Rates ◽  
Brainstem Response ◽  
Conductive Hearing

We describe a dominant Japanese patient with progressive conductive hearing loss who was diagnosed with <i>NOG</i>-related symphalangism spectrum disorder (<i>NOG</i>-SSD), a spectrum of congenital stapes fixation syndromes caused by <i>NOG</i> mutations. Based on the clinical features, including proximal symphalangism, conductive hearing loss, hyper­opia, and short, broad middle, and distal phalanges of the thumbs, his family was diagnosed with stapes ankylosis with broad thumbs and toes syndrome (SABTT). Genetic analysis revealed a heterozygous substitution in the <i>NOG</i> gene, c.645C&#x3e;A, p.C215* in affected family individuals. He had normal hearing on auditory brainstem response (ABR) testing at ages 9 months and 1 and 2 years. He was followed up to evaluate the hearing level because of his family history of hearing loss caused by SABTT. Follow-up pure tone average testing revealed the development of progressive conductive hearing loss. Stapes surgery was performed, and his post-operative hearing threshold improved to normal in both ears. According to hearing test results, the stapes ankylosis in our SABTT patient seemed to be incomplete at birth and progressive in early childhood. The ABR results in our patient indicated the possibility that newborn hearing screening may not detect conductive hearing loss in patients with <i>NOG</i>-SSD. Hence, children with a family history and/or known congenital joint abnormality should undergo periodic hearing tests due to possible progressive hearing loss. Because of high success rates of stapes surgeries in cases of SABTT, early surgical interventions would help minimise the negative effect of hearing loss during school age. Identification of the nature of conductive hearing loss due to progressive stapes ankylosis allows for better genetic counselling and proper intervention in <i>NOG</i>-SSD patients.

Sensorineural Hearing Loss in Stapedial Otosclerosis

1984 ◽  
Vol 93 (1) ◽  
pp. 13-16 ◽  
Author(s):  
G. G. Browning ◽  
S. Gatehouse
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Random Sample ◽  
Older Patients ◽  
Conductive Hearing Loss ◽  
Bone Conduction ◽  
Sensorineural Hearing ◽  
Control Subjects ◽  
Significant Difference ◽  
Conductive Hearing

Controversy exists as to whether individuals with stapedial otosclerosis have elevated bone conduction thresholds due to cochlear involvement by the focus. A comparison was made between the Carhart-corrected bone conduction thresholds in 45 unoperated, non-noise-exposed individuals with stapedial otosclerosis and the thresholds in a matched random sample of the population with no conductive hearing loss. No consistent, significant difference was discerned. It is considered that individuals with stapedial otosclerosis do not in general have elevated bone conduction thresholds compared with control subjects. However, there was a suggestion that there may be a small, progressive elevation of bone conduction thresholds in older patients.

scholarly journals Validation of a Personalized Hearing Screening Mobile Health Application for Persons with Moderate Hearing Impairment

2021 ◽  
Vol 11 (10) ◽  
pp. 1035
Author(s):  
Lok-Yee Joyce Li ◽  
Shin-Yi Wang ◽  
Jinn-Moon Yang ◽  
Chih-Jou Chen ◽  
Cheng-Yu Tsai ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Hearing Impairment ◽  
Pure Tone ◽  
Conductive Hearing Loss ◽  
Bone Conduction ◽  
Pure Tone Audiometry ◽  
Hearing Screening ◽  
Self Test ◽  
Conductive Hearing ◽  
Air Conduction

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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