Hossein Seraji; sadegh jafarzadeh
Volume 27, Issue 3 , September and October 2020, , Pages 322-326
Abstract
Background: Hearing loss is a debilitating condition that even mild degrees can disrupt speech processing, communication and limit social interaction. The prevalence of hearing loss and its causes in various age and people groups is different. The aim of this study was conducted to determine the frequency ...
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Background: Hearing loss is a debilitating condition that even mild degrees can disrupt speech processing, communication and limit social interaction. The prevalence of hearing loss and its causes in various age and people groups is different. The aim of this study was conducted to determine the frequency of hearing loss and related factors in patients referred to audiology Clinic of Ghaem Hospital in Mashhad from October 2017 to April 2018. Material and methods: This cross-sectional study was performed on 493 people referred to Audiology Clinic of Ghaem Hospital in Mashhad. The cause of referring and family history and related diseases was obtained by a questionnaire and then compared with the results of their tympanometry and audiometry tests. The results were obtained using descriptive statistics and Pearson correlation coefficient.Results: average age of participants were 41.2 (±18.96) years old and 342 out 493 (69/4%) had hearing loss. 79.8% men and 62.6% of women had hearing loss. Sensorineural hearing loss was the most common type of hearing loss (35.2% of all patients). The Otitis media was the most common cause of hearing loss among patients with hearing impairment (10.7%). Also, there was a significant relationship between aging and degree of hearing loss.Conclusions: According to this results, hearing loss are frequent among Referents of Audiology Clinic. Some causes of hearing loss, such as infections, noise exposure, and Ototoxic drugs can be controlled, Therefore, preventive health care and appropriate treatments can be helpful in reducing the risk of hearing loss.
Behzad Foladi; Abbas Mohammadi; Leila Ebrahimi; Ali Behzadi
Volume 22, Issue 1 , March and April 2015, , Pages 143-150
Abstract
Background and purpose: There are many factors affecting the risk of hearing loss. Smoking is one of these factors. Many studies show a link between smoking and hearing loss. However, the increase in hearing theresholds of smokers and non-smokers is less reported .This study was aimed comparing the hearingthres ...
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Background and purpose: There are many factors affecting the risk of hearing loss. Smoking is one of these factors. Many studies show a link between smoking and hearing loss. However, the increase in hearing theresholds of smokers and non-smokers is less reported .This study was aimed comparing the hearingthres holds at low frequencies among smokers and non-smokers.
Materials and Methods: In this cross-sectional study of medicine which was performed in 2012, in the health department of mahshahr city 40 male smokers and 40 non-smoking males with age range between 20 and 40 years were selected and studied by the researcher questionnaire based vestigation. The assessment of hearing loss was performed by using acoustic booth and audiometer with earphone amplivox DA260 Telephonic TDH-39P model. Data analysis were performed by using the software SPSS16 and P
Zahra Jafari; Ryhaneh Toofan; Maryam Aghamollayee; Shadi Rahimzadeh; Mahdieh Esmaeilie
Volume 20, Issue 3 , September and October 2013, , Pages 259-269
Abstract
Background and objective: Hearing loss and tinnitus are two auditory effects of hearing system damage due to occupational noise exposure. These factors can have non-auditory effects by themselves and impact on brain cognitive performance. In our study, the effect of occupational noise-induced hearing ...
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Background and objective: Hearing loss and tinnitus are two auditory effects of hearing system damage due to occupational noise exposure. These factors can have non-auditory effects by themselves and impact on brain cognitive performance. In our study, the effect of occupational noise-induced hearing loss and tinnitus on cognition and auditory-verbal memory was investigated.
Materials and methods: Our study was done on 42 male workers aged 40 to 56 years in three groups of workers with 1) hearing loss, 2) hearing loss and tinnitus and 3) normal hearing. Workers in two first groups had a long history of working in environments with excessive noise, and third group was matched control workers with normal hearing. Hearing impaired persons had symmetrical moderate falling sensory-neural hearing loss in the both ears. For all subjects, Mini-Mental State Examination and Rey Auditory-Verbal Learning Tests were performed in identical conditions.
Results: Normal hearing group had higher scores in all stages of the Rey Auditory-Verbal Learning test than two other groups and their means differences in three A1, Sum and Recognition stages were significant (p≤0.034). Similar finding was observed in the Mini-Mental Examination test too (p≤0.025).
Conclusion: Our study revealed effect of noise induced hearing loss and tinnitus due to prolonged exposure to noise over the limit on general cognition and auditory-verbal memory. Given the preventable nature of auditory and non-auditory effects of occupational noise, administration and control of hearing conservation programs and training of workers can be the suitable and proposed solution.
MR AZARPAZHOUH; SR SHAHAMI
Volume 14, Issue 2 , July and August 2007, , Pages 135-140
Abstract
Background and Purpose: Type II neurofibromatosis is a dominant autosomal genetically transferred disease characterized with multiple Schwannoma and classically with bilateral vestibular Schwannoma. Schwannoma is considered as the main symptom and usually originates from cranial nerves (particularly ...
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Background and Purpose: Type II neurofibromatosis is a dominant autosomal genetically transferred disease characterized with multiple Schwannoma and classically with bilateral vestibular Schwannoma. Schwannoma is considered as the main symptom and usually originates from cranial nerves (particularly the 8th pair), nerve roots and distal nerves. In this article, one such case is reported.
The Patient: A 20-year-old patient with a history of progressive hearing loss from one year earlier was admitted. The history of the patient indicated a spinal Schwannoma surgery one year before the first visit. No familial history was recorded. On the systemic examination, only a few milk brown spots were observed. On the nervous system examination, low facial sensation along the ophthalmic and maxillary branches of the 5th pair, low OS retina reflex and left ear hearing loss were observed. MR imaging indicated hyper-intense damages in T2 phase from the cerebellar-pons angle, highlighting the mass on the right with the radio-opaque agent. Upon left occipital craniotomy, the calcified rather bleeding tumor underwent resection in the cerebellar-pons area. Pathology results confirmed Schwannoma.
Conclusion: The singleton type II neurofibromatosis is rare and consideration of the disorder seems to be essential in the diagnosis of multiple simultaneous tumors in the central nervous system.
MB ARDESHIR LARIJANI; M MOTASADDI; H HADIZADEH; A FARD ESFAHANIAN; R HESHMAT; O TABATABAEI; S SHARGHI; V HAGHPANAH; E TAHERI; A LASHKARI
Volume 13, Issue 1 , March and April 2006, , Pages 33-39
Abstract
Background and purpose: Pendred syndrome, defined traditionally as the constellation of goiter, sensori-neural hearing loss and positive perchlorate discharge test. Since the relatively newer approaches to the diagnosis of this syndrome, as MRI and genetic and/or molecular analysis are much more expensive ...
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Background and purpose: Pendred syndrome, defined traditionally as the constellation of goiter, sensori-neural hearing loss and positive perchlorate discharge test. Since the relatively newer approaches to the diagnosis of this syndrome, as MRI and genetic and/or molecular analysis are much more expensive and complicated than the traditional approaches, we planned to study the value and reliability of MRI as the sole, or adjunctive diagnostic approach to the syndrome. Materials and methods: We presumed the classic triad is still the most widely accepted gold standard, and compared MRI findings in six such defined patients with six seemingly incomplete forms with goiter and hearing loss, but with negative Perchlorate discharge test.
Results: There were a sensitivity and specificity of 83.3% and 66.7%, respectively for MRI in patients fulfilling all three criteria and 66.7% and 100% for sensitivity and specificity in the group lacking perchlorate test positivity. Conclusion: Although MRI can not replace the holistic approach, In "partial" cases with equivocal findings, and in the evaluation of relatives of the patients MRI may be considered as a valuable diagnostic adjunct.