Impact of Alcohol on Auditory Thresholds

Sivakumar, N (2015) Impact of Alcohol on Auditory Thresholds. Masters thesis, Coimbatore Medical Collegel, Coimbatore.


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BACK ROUND: Alcohol is one of the serious public health problems and has become a common tendency worldwide. In general, approximately 2 billion of the world’s population consumes alcohol and 76.3 million people have alcoholic disorders. Alcohol affects almost all organs of the body and causes cirrhosis, peripheral neuropathy, hyper tension, myocardial infarction and death. Alcohol also causes hearing loss. AIM & OBJECTIVE: The aim of the study is to analyze the hearing loss in alcoholic men and non alcoholic men by using Puretone audiometry and smart DPOAE. DESIGN: Descriptive with purposive sampling. PARTICIPANTS: A total of 134 subjects (25 to 55 years) were included in the study of which 67 alcoholic men were taken as study group and 67 healthy non- alcoholics as controls. The study subjects were selected by AUDIT questionnaire from the outpatient department of psychiatry, Coimbatore medical college hospital, Coimbatore. Alcoholic men who were diabetic, hypertensive, smoker, subjects using ototoxic drugs were identified and excluded from the study. METHODOLOGY: After getting consent, the cases were selected after ruling out any infections or foreign body in the external auditory meatus by using otoscope. After clearly explaining the procedure, audiometric thresholds were recorded by using puretone audiometer and smart DPOAE. RESULTS: Unpaired ‘t’ test and Yate’s and Fisher’s chi square tests were used to analyze the significance of difference between variables. 44 out of 67 alcoholics and only 5 non-smokers were affected with sensorineural hearing loss (p<0.0001). There is significant increase in auditory thresholds in alcoholics (p<0.0001). CONCLUSION: The results of this study suggest that, alcoholics were affected by high frequency (above 4 KHz) sensorineural hearing loss. The hearing loss is directly related to the duration, amount, type, occupation and age of alcoholics. Hearing loss may be due to the effect of inhibition of transmission via GABA A type receptors and damage occurred in outer hair cells in the organ of corti.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Sensorineural hearing loss ; Auditory thresholds ; Puretone audiometry and Distortion product otoacoustic emission.
Subjects: MEDICAL > Physiology
Depositing User: Punitha K
Date Deposited: 24 May 2018 17:48
Last Modified: 27 May 2018 12:41

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