نتایج جستجو برای: loss of hearing
تعداد نتایج: 21191994 فیلتر نتایج به سال:
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 ...
One of the most impairment aspect in occupational health is the study of noise induced hearing loss (NIHL) in noise exposed workers. The study was carried out to find out relation and a model between noise exposed workers and NIHL in 1997. To determine NIHL in the worker in loom-650, 45 workers...
Visual/motional skill is one of the necessary skills to maintain non-verbal communication. This skill includes visual/motional alliance of the eye and the hand in children suffering from hearing impaired who, constantly, use body language to maintain communication which is very important. Up to now, multiple analyses have been conducted by researchers in the area of the growth of visual sense a...
objective(s) despite the enormous heterogeneity of genetic hearing loss, most non-syndromic hearing losses are caused by mutations in the gjb2 gene. we aimed to characterize the mutation profiles of 100 iranian deaf patients that were under 10 years old. materials and methods patients were tested with direct sequencing of entire coding region of the gjb2 gene. results eight known mutations plus...
Background and Objective: Early detection of neonatal hearing disorders is a suitable measure of speech and behavioral development. The aim of this study was to determine the prevalence of hearing disorder in high-risk neonates treated in a neonatal intensive care unit (NICU). Materials and Methods: This descriptive study was performed on 150 neonates treated in the NICU of Besat Hospital in ...
This study deals with noise problems associated with the use of air-turbine drills in dental practice. The sigh-speed dental drills offer an entirely new concept cavity preparation and presents by far the easiest method of cutting hard dental tissues. The use of these machines, however, cause some new problems among which is the possibility of harmful effects on the hearing sense of the...
Abstract Background : Noise is the most common hazard in the workplace and noise induced hearing loss considered to be the most common occupational disease as well. Cigarette smoking, in some studies, has been known to induce hearing loss. The purpose of this study was to evaluate the effect of contemporary exposure to occupational noise and cigarette smoking on hearing. Methods :...
This study has been carried out in two shoe-making factories in Tehran with the aim ofevaluating the cobined effects of noise and toluene on the workers' hearing. Sixty four workers were assigned to three groups according to their exposure to noise andtoluene. 33 were exposed to noise (group 0), 5 to toluene (group 1) and 26 to noise andtoluene (group 2).The concentration were measured in the ...
Introduction: Noise Induced Hearing Loss(NIHL) is among the most common occupational diseases which may cause irreversible and permanent hearing loss. Noise is the most frequent preventable occupational exposure. The most importanmt cause of NIHL is exposure to noise more than 85 dB and not to use hearing protection devices. Considering the importance of hearing protection deivices for preventi...
Background: Amblyaudia, a recent subcategory of auditory processing disorder, is characterized by asymmetrical auditory processing of an individual’s ears. Amblyaudia can result in speech comprehension difficulties, reading difficulties, information processing deficits, and inattention. These difficulties can be mistakenly attributed to Attention Deficit Hyperactivity Disorder, Specific L...
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