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Identification of cochlear and retro cochlear causes in patients with tinnitus
Other Title(s)
التعرف على أسباب الطنين في القوقعة أو المسار العصبي خلف القوقعة
Joint Authors
Bakr, Muhammad Salamah
Sad, Muhammad Mustafa
Abd al-Raziq, Dalia Ismail
Source
Issue
Vol. 29, Issue 1 (31 Jan. 2005), pp.133-146, 14 p.
Publisher
Assiut University Faculty of Medicine
Publication Date
2005-01-31
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Topics
Abstract EN
This study was designed to identify the possible underlying site of lesion in patients with tinnitus through using Transient Evoked otoacoustic Emissions (TEOAEs), Auditory Brainstem Response (ABR) and Electrocochleography (ECOchG).
Forty subjects complaining of tinnitus were examined.
The control group consisted of 24 ears with normal hearing sensitivity not involved with tinnitus.
The study group comprised of 36 ears with hearing loss and 20 ears with normal hearing thresholds.
TEOAEs revealed that 88.8% of tinnitus ears with hearing loss partially passed or failed to pass the emissions.
Interestingly, 20% of tinnitus ears with normal hearing fall in the fail to pass category.
There was statistically significant difference between control and study group for absolute latency of wave I.
In ABR test.
EcochG results showed that there was no statistically significant difference of the summation potential (SP), action potential (AP) and SP/AP ratio.
On individual analysis, two subjects showed increased SP/AP ratio who were finally diagnosed as having Meniere's disease.
One subject revealed manifestations of retrocochlear lesion in ABR test results and proved later to have cerebellopontine angle mass.
The combination of TEOAEs, ABR and EcochG is useful to identify site of lesion in tinnitus subjects.
EcochG is valuable in diagnosis of endolymphatic subjects.
EcochG is valuable in diagnosis of endolymphatic hydrops, ABR for detection of retrocochlear lesion while TEOAEs is very promising for early detection of hidden cochlear pathology.
American Psychological Association (APA)
Sad, Muhammad Mustafa& Bakr, Muhammad Salamah& Abd al-Raziq, Dalia Ismail. 2005. Identification of cochlear and retro cochlear causes in patients with tinnitus. Assiut Medical Journal،Vol. 29, no. 1, pp.133-146.
https://search.emarefa.net/detail/BIM-52781
Modern Language Association (MLA)
Sad, Muhammad Mustafa…[et al.]. Identification of cochlear and retro cochlear causes in patients with tinnitus. Assiut Medical Journal Vol. 29, no. 1(Jan. 2005), pp.133-146.
https://search.emarefa.net/detail/BIM-52781
American Medical Association (AMA)
Sad, Muhammad Mustafa& Bakr, Muhammad Salamah& Abd al-Raziq, Dalia Ismail. Identification of cochlear and retro cochlear causes in patients with tinnitus. Assiut Medical Journal. 2005. Vol. 29, no. 1, pp.133-146.
https://search.emarefa.net/detail/BIM-52781
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. .145
Record ID
BIM-52781