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Zahraa Elbohy
Cairo, Cairo University, EgyptTitle : Effect of different dynamic range variables on cochlear implant performance in postlingual cochlear implant in adults
Abstract
BACKGROUND? If our goal
is to optimize patient performance in daily life, then clinical fitting should
improve the ability of cochlear implant (CI) users to understand soft speech as
well as speech in noise. It is important to change the input dynamic range
(IDR) characteristics in order to optimize the CI performance in everyday life.
Aims of work are to evaluate the effect of different IDR characteristics on CI
performance.
METHODS? The study
group comprised of fourteen postlingual CI adults who were implanted and used
their device for at least 6 months were studied. Programs were adjusted for
four input sensitivity settings differing in threshold (T) & comfortable
(C) levels, microphone sensitivity (MS) and volume sensitivity. Subjects were
tested using each sensitivity program with Arabic monosyllabic word lists
presented at 50 dB SPL and 70 dB SPL both in quiet and in noise (signal to
noise ratio 0,+10, ? 10) with and without visual cues (VC). In addition, aided
hearing threshold level was tested.
RESULTS? The highest
word recognition score at 50 dB SPL without VC in quiet was obtained when T
level was set behaviorally followed by maximum MS. The highest score at 70 dB
SPL in quiet was obtained with maximum MS.
CONCLUSIONS? Behavioral
measuring of T levels results in maximized perception of soft sounds. High MS
setting makes low-level sounds more audible. Based on the results of the study,
clinical programming recommendations are provided.
Biography
Zahraa Elbohy
has completed her MD of Audio-vestibular Medicine at the age of 34 years old
from Cairo University, Egypt. She is a lecturer of Audio-vestibular Medicine at
E.N.T department, Faculty of Medicine, Cairo University, Egypt. She works as an
Audiology Consultant in some Audiology centers in Egypt. She won the Best
Research Forum at the 6th Young Otologists Forum for Research in ORL
in GCC& Arab World during 12th GCC Otorhinolaryngology Audiology
and Communication Disorders Conference, 10th Emirates
Otorhinolaryngology Audiology and Communication Disorders Congress, January
15-17, 2020, Dubai, UAE. She has been
serving as an editorial board member of Acta Scientific Otolaryngology.
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