الفهرس 
Applied anatomy of auditory pathwayOnly 14 pages are availabe for public view
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Abstract
The auditory brainstem response (ABR) represents the far field potentials recorded from the scalp and comprises five to seven waves generated from the auditory pathway up to the level of the inferior colliculus. The ABR occurs within the first 10 milliseconds following transient acoustic stimuli, so it is called the early–evoked potential(Abramovich, 1990a).
The concept of a relationship between hypercholesterolemia and sensorineural hearing loss is still controversial. Some authors reported that there was no significant association between hearing and fasting cholesterol level. But many other authors believe there is a relationship, a view that is widely accepted based on vascular nature (Erdem et al 2003).
It is well known that hypercholesterolemia causes arteriosclerotic changes in vessel walls, leading to partial vascular obstruction and endorgan hypoxia. It has been proposed that these arteriosclerotic changes in cochlear vessels may lead to hearing loss (Satar et al, 2001).
The aim of this present study is to apply the auditory brainstem response audiometry on a group of hypercholesterolemic patients in an attempt to evaluate the integrity of the auditory system in this group of patients and to search for the existence of subclinical auditory dysfunction related to hypercholesterolemia. Fifty subjects of two groups hypercholesterolemic patients (forty patients) and control group (ten normal subjects).
Both the study and control groups were subjected to full medical history, general and otoscopic examination, pure tone and speech audiometry, blood sugar curve, fasting plasma cholesterol level and PDF Creator: PDF4U Pro DEMO Version. If you want to remove this line, please purchase the full version.