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Mechanisms of hearing loss in prematures and full terms with perinatal or postnatal hypoxia
International Conference and Exhibition on Otolaryngology
Ahmed Mehanna
ScientificTracks Abstracts: Otolaryngology
Abstract
Objective: Preoperative evaluation of the type of deafness before cochlear implant for all deaf children with severe bilateral sensorineural hearing loss after perinatal and postnatal hypoxia and asphyxia in order to assess the mechanism of deafness among prematures and full term with a history of hypoxia. Study Design: A longitudinal study of all paediatric cochlear implant patients between 1994 and 2006 referred to Sydney Cochlear Implant Centre who had history of perinatal or postnatal hypoxia or asphyxia. Electrophysiological data were collected retrospectively and prospectively and analyzed. Some oto-acoustic emissions (OAE) data was collected during the neonatal period prior to referral for cochlear implant. All subjects were tested using round window electrocochleography (RWEcochG), auditory brainstem responses (ABR), and implant-evoked electric auditory brainstem responses (EABR). The tested group consisted of 57 profoundly deaf child who experienced hypoxia or asphyxia in their perinatal period is further divided into two subgroups, prematures (their gestatic age is below 31w ) and fullterms ( born after 31weeks of gestation).Biography
Dr. Ahmed Mehanna is Lecturer of ENT at Alexandria University in Egypt. He received his MBBCH degree in September 1999 and Master degree of otorhinolaryngology and head and neck surgery in 2004. Dr. Ahmed Mehanna received his Doctorate degree of otolaryngology in Novemeber 2009 from Alexandria University. He served as House officer (INTERN) at Alexandria university hospital from March 2000- February 2001. He worked as a clinical and research ENT fellow in The Royal Prince Alfred Hospital, Westmead Children hospital and Sydney cochlear Implant Centre. He also worked in The Matter Hospital with Prof Gibson in his private operative work. Dr. Ahmed Mehanna attended several international conferences and has 4 publications. His research interests include Otology and cochlear implant surgery, Pediatric Otolaryngology and Airway management.
