Qualitätskontrolle der kindlichen Hörgeräteversorgung

“…In neuerer Zeit untersuchten Niehaus et al [17] Die Akzeptanz der Hörgeräte wird gelegentlich als Parameter einer guten Hörgeräteversorgung angesehen [2,19]. Dieses kann aber ein trügerisches Bild zur Folge haben, darauf wiesen bereits 1981 Gross u. Biesalski hin [9].…”

Section: Gruppeunclassified

Zum Stand der Hörgeräteversorgung bei Schülern und Schülerinnen der Schwerhörigen- und Gehörlosenschule

Seifert¹,

Rose²,

Hahn³

et al. 2001

HNO

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To evaluate and possibly improve the hearing aid fittings of children attending the Westphalian School for the Hearing Impaired or the Westphalian School for the Deaf, regular pedaudiologic consulting hours were established at both schools. During a 2-year period, 115 children were examined once, 35 children twice, and 5 children three times. The examinations comprised ear microscopy, audiometry, and a check of the hearing aids with a 0.6-cm3 coupler (children up to 7 years) or 2-cm3 coupler, respectively. The following criteria were used to assess the quality of the hearing aid setting: status of the external auditory canal and middle ear, acceptance of wearing the hearing aid, status of the ear mold, technical status of the hearing aid, and its setting. The results were related to four variables: gender, type of school, age, and mean hearing loss. Overall, just 40.9% of all children showed satisfactory hearing aid performance at the first examination and just 37.1% at the second. A significant influence of the variables on the hearing aid performance was documented for hearing loss only. The higher the hearing loss, the more likely the children were to have good hearing aid status. Analysis of the different parameters revealed that an incorrect setting was the main problem, with a rate of 20.9%; the rate of the other parameters varied from 6.1% to 15.7%. Thus, no parameter was of major relevance to the results. The results of the second examination were poorer in most parameters than those of the first. These alarming results, which are probably not only of regional significance, demonstrate that the hearing aid status of children attending schools for the hearing impaired or for the deaf is in urgent need of improvement.

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“…Die späten kortikalen Potentiale bieten, sofern die Vigilanz des Probanden stabil gehalten wird, die Vorteile der zentralen Diagnostik und der Frequenzspezifität. Wegen der sehr genauen Latenzbestimmung [6] ist mit Hilfe der frühen Potentiale des Hörorgans und des Hirnstamms eine Differentialdiagnostik unterschiedlicher Erkrankungen des Hörorgans und des Hörnerven [5,10,13] möglich. Da diese Potentiale vorzugsweise aus dem basalen Bereich der Kochlea stammen, ist eine frequenzspezifische Untersuchung der Hör-funktion im tiefen Frequenzbereich mit Hirnstammpotentialen in Schwellennä-he schwierig [18].…”

Section: Untersuchung Derunclassified

Untersuchung der Frequenzspezifität akustisch evozierter Potentiale früher und mittlerer Latenz mit Hochpaßmaskierung

Anft

Bartsch

Scholz

et al. 1998

HNO

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In contrast to auditory brainstem potentials (ABR), a more apically defined generation of middle latency evoked potentials (MLR) can be assumed due to the longer integration time present. To date, the effect of stimulus frequency spectra on MLR has not been completely known. By using masking with high-pass filtered white noise in 12 normal-hearing adults, we measured the dependence of amplitude and latency of ABR and MLR on filter frequency. No differences were found between the masking effects for ABR and MLR evoked by tone bursts of 0.5 and 2 kHz. The high-pass masking of click stimuli showed a greater influence on the amplitude and latency of the ABR than on MLR. These different qualities have to be considered clinically when evaluating the methods and results of hearing testing with acoustic evoked potentials. Our findings show that MLR evoked by tone bursts should be used for the frequency selective diagnosis of hearing thresholds, especially in low-frequency ranges.

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Qualitätskontrolle der kindlichen Hörgeräteversorgung

Cited by 5 publications

References 11 publications

Agatha Streicher (1520-1581): Schwenkfelder, Networker, and Physician in Ulm

Agatha Streicher (1520-1581): Schwenkfelder, Networker, and Physician in Ulm

Zum Stand der Hörgeräteversorgung bei Schülern und Schülerinnen der Schwerhörigen- und Gehörlosenschule

Untersuchung der Frequenzspezifität akustisch evozierter Potentiale früher und mittlerer Latenz mit Hochpaßmaskierung

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