Document Detail

Effect of smoking on transient evoked otoacoustic emissions and contralateral suppression.
MedLine Citation:
PMID:  19864089     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The present study compared the amplitudes of transient evoked otoacoustic emissions (TEOAEs) and efferent suppression in smokers and non-smokers taking age into consideration. METHODS: Fifty smokers and fifty non-smokers who had normal hearing sensitivity with age range of 20-69 years were considered for the present study. TEOAEs were measured in both the groups of subjects across different age groups. The functioning of the efferent auditory system was evaluated in both the groups by recording the TEOAEs in the presence of a contralateral white noise (CWN) of 70dB SPL. RESULTS: Age did not have a significant effect on the TEOAEs amplitude in both the groups of subjects. However, the TEOAEs amplitude was significantly reduced in smokers compared to non-smokers. The results found a significant effect of age on the amplitude of efferent suppression in smokers, however, no significant effect was found in the non-smokers group. CONCLUSIONS: It was found that the difference in the amplitude of efferent suppression in smokers was significantly greater for each age group between 20 and 49 years compared to each age group from 50 to 69 years. Results have important implication on the damage to the cochlear structures from smoking.
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Publication Detail:
Type:  Journal Article     Date:  2009-10-28
Journal Detail:
Title:  Auris, nasus, larynx     Volume:  37     ISSN:  1879-1476     ISO Abbreviation:  Auris Nasus Larynx     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-03-19     Completed Date:  2010-06-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708170     Medline TA:  Auris Nasus Larynx     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  299-302     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2009 Elsevier Ireland Ltd. All rights reserved.
Department of Audiology, All India Institute of Speech and Hearing, Manasagangothri, Mysore, India.
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MeSH Terms
Hair Cells, Auditory, Outer / drug effects
Hearing / drug effects*
Middle Aged
Nicotine / adverse effects*
Nicotinic Agonists / adverse effects*
Otoacoustic Emissions, Spontaneous / drug effects*
Smoking / adverse effects*
Young Adult
Reg. No./Substance:
0/Nicotinic Agonists; 54-11-5/Nicotine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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