The Experts below are selected from a list of 7734 Experts worldwide ranked by ideXlab platform
De Wet Swanepoel - One of the best experts on this subject based on the ideXlab platform.
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self reported hearing loss and Pure Tone Audiometry for screening in primary health care clinics
Journal of Primary Care & Community Health, 2018Co-Authors: Christine Louw, De Wet Swanepoel, Robert H EikelboomAbstract:Objective: To evaluate the performance of self-reported hearing loss alone and in combination with Pure Tone Audiometry screening in primary health care clinics in South Africa. Design: Nonprobabil...
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validity of diagnostic Pure Tone Audiometry without a sound treated environment in older adults
International Journal of Audiology, 2013Co-Authors: Felicity Maclennansmith, De Wet Swanepoel, James W. HallAbstract:AbstractObjective: To investigate the validity of diagnostic Pure-Tone Audiometry in a natural environment using a computer-operated audiometer with insert earphones covered by circumaural earcups incorporating real-time monitoring of environmental noise. Design: A within-subject repeated measures design was employed to compare air (250 to 8000 Hz) and bone (250 to 4000 Hz) conduction Pure-Tone thresholds, measured in retirement facilities, with thresholds measured in a sound-treated booth. Study sample: One hundred and forty-seven adults (average age 76 ± 5.7 years) were evaluated. Pure-Tone averages were ≥ 25 dB in 59%, mildly (> 40 dB) elevated in 23%, and moderately (> 55 dB) elevated in 6% of ears. Results: Air-conduction thresholds (n = 2259) corresponded within 0 to 5 dB in 95% of all comparisons between the two test environments. Bone-conduction thresholds (n = 1669) corresponded within 0 to 5 dB in 86% of comparisons. Average threshold differences (− 0.6 to 1.1) and standard deviations (3.3 to 5....
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Diagnostic Pure-Tone Audiometry in Schools: Mobile Testing without a Sound-Treated Environment
Journal of the American Academy of Audiology, 2013Co-Authors: De Wet Swanepoel, Felicity Maclennan-smith, James W. HallAbstract:PURPOSE: To validate diagnostic Pure-Tone Audiometry in schools without a sound-treated environment using an audiometer that incorporates insert earphones covered by circumaural earcups and real-time environmental noise monitoring. RESEARCH DESIGN: A within-subject repeated measures design was employed to compare air (250 to 8000 Hz) and bone (250 to 4000 Hz) conduction Pure-Tone thresholds measured in natural school environments with thresholds measured in a sound-treated booth. STUDY SAMPLE: 149 children (54% female) with an average age of 6.9 yr (SD = 0.6; range = 5-8). RESULTS: Average difference between the booth and natural environment thresholds was 0.0 dB (SD = 3.6) for air conduction and 0.1 dB (SD = 3.1) for bone conduction. Average absolute difference between the booth and natural environment was 2.1 dB (SD = 2.9) for air conduction and 1.6 dB (SD = 2.7) for bone conduction. Almost all air- (96%) and bone-conduction (97%) threshold comparisons between the natural and booth test environments were within 0 to 5 dB. No statistically significant differences between thresholds recorded in the natural and booth environments for air- and bone-conduction Audiometry were found (p > 0.01). CONCLUSIONS: Diagnostic air- and bone-conduction Audiometry in schools, without a sound-treated room, is possible with sufficient earphone attenuation and real-time monitoring of environmental noise. Audiological diagnosis on-site for school screening may address concerns of false-positive referrals and poor follow-up compliance and allow for direct referral to audiological and/or medical intervention.
Jong Woo Chung - One of the best experts on this subject based on the ideXlab platform.
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comparing Pure Tone Audiometry and auditory steady state response for the measurement of hearing loss
Otolaryngology-Head and Neck Surgery, 2007Co-Authors: Joong Ho Ahn, Hyosook Lee, Young Jin Kim, Tae Hyun Yoon, Jong Woo ChungAbstract:Objective To compare Pure-Tone Audiometry and auditory steady state response (ASSR) to measure hearing loss based on the severity of hearing loss in frequencies. Study Design and Setting A total of 105 subjects (168 ears, 64 male and 41 female) were enrolled in this study. We determined hearing level by measurement of Pure-Tone Audiometry and ASSR on the same day for each subject. Results Pure-Tone Audiometry and ASSR were highly correlated (r = 0.96). The relationship is described by the equation PTA = 1.05 × mean ASSR – 7.6. When analyzed according to the frequencies, the correlation coefficients were 0.94, 0.95, 0.94, and 0.92 for 0.5, 1, 2, and 4 kHz, respectively. Conclusion From this study, authors could conclude that Pure-Tone Audiometry and ASSR showed very similar results and indicated that ASSR may be a good alternative method for the measurement of hearing level in infants and children, for whom Pure-Tone Audiometry is not appropriate.
Donghee Lee - One of the best experts on this subject based on the ideXlab platform.
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discrepancies in hearing thresholds between Pure Tone Audiometry and auditory steady state response in non malingerers
Ear and Hearing, 2020Co-Authors: Heil Noh, Donghee LeeAbstract:Objectives To evaluate discrepancies between Pure-Tone Audiometry (PTA) and auditory steady state response (ASSR) tests in non-malingerers and investigate brain lesions that may explain the discrepancies, especially in cases where the PTA threshold was worse than the estimated ASSR threshold. Design PTA, speech Audiometry, auditory brainstem response, ASSR, and neuroimaging tests were carried out on individuals selected from 995 cases of hearing impairment. Among these, medical records of 25 subjects (19 males, 6 females; mean age = 46.5 ± 16.0 years) with significant discrepancy between PTA and estimated ASSR thresholds were analyzed retrospectively. To define acceptable levels of discrepancy in PTA and ASSR hearing thresholds, 56 patients (27 males, 29 females; mean age = 53.0 ± 13.6 years) were selected for the control group. Magnetic resonance images, magnetic resonance angiograms, and positron emission tomograms were reviewed to identify any neurologic abnormalities. Results Pathologic brain lesions were found in 20 cases (80%) in the study group, all of which showed a significant discrepancy in hearing threshold between PTA and ASSR. Temporal lobe lesions were found in 14 cases (70%), frontal lobe lesions in 12 (60%), and thalamic lesions without the frontal or temporal lobe in 2 cases (10%). On repeated PTA and ASSR tests a few months later, the discrepancy between ASSR and behavioral hearing thresholds was reduced or resolved in 6 cases (85.7%). Temporal lobe lesions were found in all 3 cases in which the estimated ASSR threshold worsened with unchanged PTA threshold, and frontal lobe lesions were found in all 3 cases in which the PTA threshold improved but the estimated ASSR threshold was unchanged. No neurological lesions were found in 5 cases (20%) of patients with a discrepancy between ASSR and behavioral hearing thresholds. Conclusions Clinicians should not rely exclusively on ASSR, especially in cases of central nervous system including temporal, frontal lobe, or thalamus lesions. If no lesions are found in a neuroimaging study of a patient with a discrepancy between PTA thresholds and estimated ASSR thresholds, further functional studies of the brain may be needed. If clinicians encounter patients with a discrepancy between PTA thresholds and estimated ASSR thresholds, an evaluation of brain lesions and repeat audiologic tests are recommended in lieu of relying solely on ASSR.
Asaduzzaman Khan - One of the best experts on this subject based on the ideXlab platform.
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high frequency Pure Tone Audiometry in children a test retest reliability study relative to ototoxic criteria
Ear and Hearing, 2012Co-Authors: Nuala Beahan, Joseph Kei, Carlie Driscoll, B G Charles, Asaduzzaman KhanAbstract:Objective: Good test-retest reliability of high frequency (>= 8 kHz) Pure-Tone Audiometry (HFPTA) is essential to detect significant changes in hearing threshold caused by ototoxicity. While the test-retest reliability of HFPTA in adults has been extensively studied, such investigations in children are scant. This study aimed to evaluate the test-retest reliability of the HFPTA in normal-hearing children with particular reference to the criteria for ototoxicity.
Joong Ho Ahn - One of the best experts on this subject based on the ideXlab platform.
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comparing Pure Tone Audiometry and auditory steady state response for the measurement of hearing loss
Otolaryngology-Head and Neck Surgery, 2007Co-Authors: Joong Ho Ahn, Hyosook Lee, Young Jin Kim, Tae Hyun Yoon, Jong Woo ChungAbstract:Objective To compare Pure-Tone Audiometry and auditory steady state response (ASSR) to measure hearing loss based on the severity of hearing loss in frequencies. Study Design and Setting A total of 105 subjects (168 ears, 64 male and 41 female) were enrolled in this study. We determined hearing level by measurement of Pure-Tone Audiometry and ASSR on the same day for each subject. Results Pure-Tone Audiometry and ASSR were highly correlated (r = 0.96). The relationship is described by the equation PTA = 1.05 × mean ASSR – 7.6. When analyzed according to the frequencies, the correlation coefficients were 0.94, 0.95, 0.94, and 0.92 for 0.5, 1, 2, and 4 kHz, respectively. Conclusion From this study, authors could conclude that Pure-Tone Audiometry and ASSR showed very similar results and indicated that ASSR may be a good alternative method for the measurement of hearing level in infants and children, for whom Pure-Tone Audiometry is not appropriate.
