Universal newborn hearing screening (UNHS) was begun in the United States in several geographic locations, the states of Rhode Island, Hawaii, and Colorado in the early 1990s. Since that time, evidence-based research indicates that universal newborn hearing screening results in earlier identification of congenital hearing loss leading to the provision of earlier intervention. Outcome data of ch...

The preservation of residual haring has emerged as an issue of concern in cochlear implantation. The indications of cochlear implantation have broadened from bilateral profound sensory neural hearing loss with normal auditory nerve function to include cases with residual hearing [1]. More emphasis is being given to the study of factors and techniques of preservation of residual hearing in order...

background hearing loss is the most common congenital disorder the incidence of which is further increased in the presence of risk factors for hearing loss among newborns admitted to the neonatal intensive care unit (nicu). the aim of this study was early diagnosis and intervention for hearing loss in newborns discharged from nicu. materials and methods this prospective cohort study was conduct...

Introduction: The present study aimed to investigate the audiological profiles of elementary school-age children in Rasht, Iran, and estimate the prevalence of hearing impair­ments in this population.   Materials and Methods: In this cross-sectional descriptive-analytical study, the hearing threshold was screened using pure tone audiomet...

1. Review the patterns of hearing loss in hereditary hearing impairment. AL First, we must understand that genetic hearing loss seems to breach all categories of hearing loss, including the following: congenital, progressive, and adult onset; conductive, sensory, and neural; syndromic and nonsyndromic; high-frequency, low-frequency, or mixed frequency; and mild or profound. Genetic hearing loss...

background noise most frequently affects hearing system, as it may typically cause a bilateral, progressive sensorineural hearing loss at high frequencies. objectives this study was designed to compare three different methods to evaluate noise-induced hearing loss (conventional audiometry, high-frequency audiometry, and distortion product otoacoustic emission). material and methods this was a c...

background it seems that there is a relationship between consanguinity and profound hearing loss but there is little data about the association of consanguinity and hearing loss in iran. objectives the aim of this study is to demonstrate the causes of profound bilateral sensorineural hearing loss among iranian samples who are candidates for cochlear implantation. methods this study was retrospe...

background : noise exposure is the most frequent occupational factor which may increase the risk of work-related injuries. the purpose of this study was to estimate the association between occupational injuries and noise exposure as well as hearing loss. methods : this study was conducted from april 2008 to march 2009 on 1062 workers in the tabriz tractor manufacturing plant. sound pressure lev...

mutations in the gjb2 gene at the dfnb1 locus on chromosome 13q12 are associated with autosomal recessive non syndromic hearing loss (arnshl) in many populations. a single mutation, at position 35 (35delg) accounts for approximately 30-63% of mutations in white populations with a carrier frequency of 1.5-2.5% in most european, north american and mediterranean populations. in this study we have ...