A systematic review on the effect of low-dose radiation on hearing |
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Authors: | Nayak Srikanth Nambi Arivudai Kumar Sathish Hariprakash P Yuvaraj Pradeep Poojar Basavaraj |
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Institution: | 1.Department of Audiology and Speech—Language Pathology, Kasturba Medical College, Manipal Academy of Higher Education, Mangalore, 575001, India ;2.Department of Audiology and Speech—Language Pathology, Madras ENT Research Foundation, Chennai, 600028, India ;3.Department of Speech and Hearing, Manipal College of Health Professionals, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India ;4.Department of Speech Pathology and Audiology, National Institute of Mental Health and Neurosciences, Bangalore, Karnataka, 560029, India ;5.Department of Pharmacology, Kasturba Medical College, Manipal Academy of Higher Education, Mangalore, 575001, India ;6.Department of Audiology and Speech-Language Pathology, Yenepoya University (Deemed to be University), Mangalore, Karnataka, 575018, India ; |
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Abstract: | Numerous studies have documented the adverse effects of high-dose radiation on hearing in patients. On the other hand, radiographers are exposed to a low dose of ionizing radiation, and the effect of a low dose of radiation on hearing is quite abstruse. Therefore, the present systematic review aimed to elucidate the effect of low-dose ionizing radiation on hearing. Two authors independently carried out a comprehensive data search in three electronic databases, including PUBMED/MEDLINE, CINAHL, and SCOPUS. Eligible articles were independently assessed for quality by two authors. Cochrane Risk of Bias tool was used assess quality of the included studies. Two articles met the low-dose radiation exposure criteria given by Atomic Energy Regulatory Board (AERB) and National Council on Radiation Protection (NCRP) guidelines. Both studies observed the behavioral symptoms, pure-tone hearing sensitivity at the standard, extended high frequencies, and the middle ear functioning in low-dose radiation-exposed individuals and compared with age and gender-matched controls. One study assessed the cochlear function using transient-evoked otoacoustic emissions (TEOAE). Both studies reported that behavioral symptoms of auditory dysfunction and hearing thresholds at extended high frequencies were higher in radiation-exposed individuals than in the controls. The current systematic review concludes that the low-dose ionizing radiation may affect the hearing adversely. Nevertheless, further studies with robust research design are required to explicate the cause and effect relationship between the occupational low-dose ionizing radiation exposure and hearing. |
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