الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Background: OAEs provide information on the cochlear status with particular respect to the outer hair cell function. EOAEs can be an objective, sensitive, and specific test in ISSNHL for monitoring the results of the treatment. TEOAEs and DPOAEs are a potentially useful means of predicting hearing prognosis in ISSNHL The rationale of this study is to efficiently use otoacoustic emissions for monitoring patients and to predict recovery with treatment in patients with ISSNHL The aim of the work: This study was aimed to: • To detect the predictive value of TEOAEs and DPOAEs in patients with idiopathic sudden sensorineural hearing loss. • To identify changes in TEOAEs and DPOAEs parameters in treatment course of sudden sensorineural Hearing loss. Materials & methods: In this prospective study, 30 subjects with unilateral ISSNHL were included. Patients were evaluated 4 times(before treatment, after one week, after one month and after three months of treatment).All subjects in this study were submitted to routine audiological evaluation including history taking, otoscopic examination, tympanometry, PTA and otoacoustic emissions testing. Results: In our study, there were statistically significant decreases in the hearing thresholds in the frequency range (250 to 8000 Hz) along the study period. There were statistically significant increases in TEOAEs SNR at frequencies 1, 1. 5, 2, 4 KHz and in 1. 2-3. 4 KHz There were statistically significant increases in DPOAEs SNR at frequencies 7969, 3984, 3000, 2016, 1500, 984, 750 Hz There were negative correlations between hearing thresholds and TEOAEs SNR and between hearing threshold and DPOAEs SNR along the study period. There were statistically significant improvements in hearing along the study period in patients with present TEOAEs and DPOAEs as compared to patients with absent TEOAEs and DPOAEs.