الفهرس 
Differences in anatomy of ear and physiology of hearing between neonates and adultsOnly 14 pages are availabe for public view
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Abstract
Since early detection (specially before 6 months of age) of hearing loss leads to better hearing and speech outcome after treatment, several clinical trials have been performed in order to find a cost effective, short duration screening test for neonatal hearing impairment. The aim of this study was to assess the sensitivity and specificity of Transient Otoacustic Emission (TEOAE) and Automated Auditory Brain Stem Response test in newborns comparing with auditory brain stem response (ABR) in the age of 3 months and to analyze the association between risk factors and hearing loss in neonates.
Methods: This study was conducted on a total number of 567 neonate from December 2015 to June 2016 in Primary Health Care Unit. One stage neonatal hearing screening was done using two different tools screening by either Automated Auditory Brain Stem Response (AABR) or Automated Oto Acoustic Emissions (AOAEs).64 neonates were assessed by ABR. Descriptive Statistics was used to analyze data.
Results: 567 neonates were screened including 281 with TEOAE and 286 with AABR technology. Mean age was 5.51 days +_4.7 days. The initial bilateral referral rate was significantly lower for TEOAE (8.18%) compared to AABR (16.73%). We found that OAE has 100% sensitivity and 85.41 % specificity in diagnosis of neonatal hearing impairment. Its positive and negative predictive value was 66.66 % and 100% respectively. AABR has 90% sensitivity and 59.57 % specificity in diagnosis of neonatal hearing impairment. Its positive and negative predictive value was 32.1 % and 96.55 % respectively Also we did not find statistically significant relationship between hearing loss and risk factors.
Conclusion: This study concludes that AOAE is more sensitive and specific than AABR in neonatal hearing screening in primary health care unit in Egypt, cheaper and less time consuming. So AOAE is recommended for use in neonatal hearing screening in primary health care unit. Also ABR is reliable test to diagnose hearing loss and to assess maturational changes of auditory and brain stem function.