نتایج جستجو برای: normal hearing threshold

تعداد نتایج: 772657  

Journal: :مجله دانشگاه علوم پزشکی شهید صدوقی یزد 0
محمد رضا وحیدی mr vahidi . [email protected] جهانگیر آیت اللهی j ayatollahi قاسم کریمی gh karimi ابوالفضل ملاصادقی a mollasadeghi

introduction: glaucoma is one of the leading causes of blindness throughout the world. some studies have suggested a relationship between glaucoma and sensorineural hearing loss, while others have found no evidence of an association. we performed a study to determine whether there is a significant difference in hearing of patients with glaucoma and a match control population. methods: in this c...

Journal: :Audiology : official organ of the International Society of Audiology 1992
T Pirilä K Jounio-Ervasti M Sorri

The average asymmetry between the hearing threshold levels in the left and right ears was analyzed in a random population (n = 3487) representing a normal population. Males and females of age groups 5-10 years, 15-50 years and over 50 years were analyzed separately. A significant average inferiority of the hearing in the left ear was found at high frequencies, especially at 3-6 kHz, among adult...

Journal: :iranian journal of pharmaceutical research 0
masoud motallebi kashani department of occupational health, faculty of health, kashan university of medical sciences, kashan, iran. seyyed bagher mortazavi department of occupational and environmental health, school of medicine, tarbiat modrres university, tehran, iran. ali khavanin department of occupational and environmental health, school of medicine, tarbiat modrres university, tehran, iran. abdolamir allameh department of biochemistry, school of medicine, tarbiat modarres university, tehran, iran. ramezan mirzaee department of occupational health, school of health, zahedan university of medical sciences, zahedan, iran. mehdi akbari department of audiology, school of rehabilitation sciences, iran university of medical sciences, tehran, iran.

noise induced hearing loss (nihl) is one of the most important occupational disease worldwide. nihl has been found potentiate by simultaneous carbon monoxide (co) exposure. free radicals have been implicated in cochlear damage resulted from the exposure to noise and due to the co hypoxia. this study examined whether α-tocopherol administration, as a free radical scavenger, causes the attenuatio...

Journal: :International journal of audiology 2013
Gitte Keidser Harvey Dillon Jorge Mejia Cong-Van Nguyen

OBJECTIVE To introduce and verify an algorithm designed to administer adaptive speech-in- noise testing to a specified reliability at selectable points on the psychometric function. DESIGN Speech-in-noise performances were measured using BKB sentences presented in diffuse babble-noise, using morphemic scoring. Target of the algorithm was a test-retest standard deviation of 1.13 dB within the ...

2016
Rajkishor Mishra Himanshu Kumar Sanju Prawin Kumar

Introduction "Diabetes mellitus is a group of metabolic disorders characterized by elevated blood sugar and abnormalities in insulin secretion and action" (American Diabetes Association). Previous literature has reported connection between diabetes mellitus and hearing impairment. There is a dearth of literature on auditory temporal resolution ability in individuals with diabetes mellitus type ...

Journal: :Hearing Research 2017
J. S. Gordon S. E. Griest E. J. Thielman K. F. Carlson W. J. Helt M. S. Lewis C. Blankenship D. Austin S. M. Theodoroff J. A. Henry

Military Service Members are often exposed to high levels of occupational noise, solvents, and other exposures that can be damaging to the auditory system. Little is known about hearing loss and how it progresses in Veterans following military service. This epidemiology study is designed to evaluate and monitor a cohort of Veterans for 20 years or more to determine how hearing loss changes over...

Journal: :international journal of occupational and environment medicine 0
gm abdel rasoul public health and community medicine department, faculty of medicine, menoufiya university, al-menoufiya, egypt ma al-batanony public health and community medicine department, faculty of medicine, menoufiya university, al-menoufiya, egypt oa mahrous public health and community medicine department, faculty of medicine, menoufiya university, al-menoufiya, egypt me abo-salem public health and community medicine department, faculty of medicine, menoufiya university, al-menoufiya, egypt hm gabr public health and community medicine department, faculty of medicine, menoufiya university, al-menoufiya, egypt

background: lead still remains an important problem for poor, inner-city, ethnic minority children, with a particular emphasis on lead paint and dust. in egypt, there is no national survey about the prevalence of elevated blood lead level among children. objective: to assess the environmental lead level as well as to determine blood lead level among primary school children and find out its rela...

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