|Karina Mrugalska-Handke, Andrzej Stefaniak, Adam Piłka, Krzysztof Kochanek|
Introduction. Auditory brainstem responses (ABR) play a key
role in early diagnosis in children. In clinical practice, they
are usually measured by applying air-conduction stimulation.
However, in some cases, such as microtia or congenital atresia,
there is a need to evaluate auditory threshold also by bone
Aim. The aim of the study was to compare the latency and
threshold of wave V evoked by a click and a 1000 Hz tone pip
for air and bone conduction.
Material and methods. A group of 40 normal-hearing children
at the age between 9 and 12 were examined. ABRs were
recorded for both stimuli and conduction types at stimulus
intensities varied in 10 dB steps.
Results. Statistical analysis did not reveal any significant
differences between the latencies measured in ABRs evoked
by air and bone conduction, irrespective of the kind of
stimulus applied. The differences between ABR and audiometic
thresholds determined for the 1000 Hz and click stimuli at
respective frequeny ranges were within 10 dB.
Conclusions. The characteristics of ABRs evoked by the
click and 1000 Hz tone pip using air and bone conduction are
keywords: słuchowe potencjały wywołane pnia mózgu, próg słyszenia, przewodnictwo powietrzne, przewodnictwo kostne,auditory brainstem responses, auditory threshold, air conduction, bone conduction
pages: from 87 to 93
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