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Tobacco Smoke Exposure during Childhood: Effect on Cochlear Physiology

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  • Alessandra S. Durante

    (Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP, School of Medical Sciences of Santa Casa of São Paulo), Arnaldo Vieira de Carvalho Foundation, Street Dr. Cesário Mota Júnior, 61 São Paulo 01221-020, Brazil)

  • Beatriz Pucci

    (Irmandade da Santa Casa de Misericórdia de São Paulo (ISCMSP, Santa Casa Sisters of Mercy Hospital of São Paulo), Street Dr. Cesário Mota Júnior, 112, São Paulo 01221-020, Brazil
    These authors contributed equally to this work.)

  • Nicolly Gudayol

    (Irmandade da Santa Casa de Misericórdia de São Paulo (ISCMSP, Santa Casa Sisters of Mercy Hospital of São Paulo), Street Dr. Cesário Mota Júnior, 112, São Paulo 01221-020, Brazil
    These authors contributed equally to this work.)

  • Beatriz Massa

    (Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP, School of Medical Sciences of Santa Casa of São Paulo), Arnaldo Vieira de Carvalho Foundation, Street Dr. Cesário Mota Júnior, 61 São Paulo 01221-020, Brazil
    These authors contributed equally to this work.)

  • Marcella Gameiro

    (Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP, School of Medical Sciences of Santa Casa of São Paulo), Arnaldo Vieira de Carvalho Foundation, Street Dr. Cesário Mota Júnior, 61 São Paulo 01221-020, Brazil
    These authors contributed equally to this work.)

  • Cristiane Lopes

    (Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP, School of Medical Sciences of Santa Casa of São Paulo), Arnaldo Vieira de Carvalho Foundation, Street Dr. Cesário Mota Júnior, 61 São Paulo 01221-020, Brazil
    These authors contributed equally to this work.)

Abstract

The rate of smoking in Brazil is about 18.8%. Exposure to environmental tobacco smoke is one of the major factors predisposing children to several hazardous health problems. The objective of the present research was to analyze the effect of tobacco smoke exposure during childhood on cochlear physiology by measuring the transient evoked otoacoustic emissions (TEOAE) response levels. Cotinine, the main metabolite of nicotine, was measured in 145 students’ (8–10 years old) urine. Sixty students indicated tobacco smoke exposure (TSE) (cotinine urine levels ≥ 5.0 ng/mL) and 85 did not. The evaluation of TEOAE of TSE students showed lower response levels, mainly on frequencies of 2.8 kHz on the right and left ears and 2.0 kHz on left ear and lower signal noise response levels, mainly on the 1.0 kHz and 1.4 kHz frequencies, when compared to controls that were not exposed to tobacco. The mean reduction observed in TEOAE of tobacco smoke exposure children was 2.1 dB SPL. These results have important implications on the damage to the cochlear structures and indicate a possible loss in hearing and hearing ability development.

Suggested Citation

  • Alessandra S. Durante & Beatriz Pucci & Nicolly Gudayol & Beatriz Massa & Marcella Gameiro & Cristiane Lopes, 2013. "Tobacco Smoke Exposure during Childhood: Effect on Cochlear Physiology," IJERPH, MDPI, vol. 10(11), pages 1-9, October.
    • Handle: RePEc:gam:jijerp:v:10:y:2013:i:11:p:5257-5265:d:29857
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    References listed on IDEAS

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    1. David Levy & Liz Maria de Almeida & Andre Szklo, 2012. "The Brazil SimSmoke Policy Simulation Model: The Effect of Strong Tobacco Control Policies on Smoking Prevalence and Smoking-Attributable Deaths in a Middle Income Nation," PLOS Medicine, Public Library of Science, vol. 9(11), pages 1-12, November.
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    1. Carlo Eduardo Medina-Solís & América Patricia Pontigo-Loyola & Eduardo Pérez-Campos & Pedro Hernández-Cruz & Leticia Ávila-Burgos & Martha Mendoza-Rodríguez & Gerardo Maupomé, 2014. "National Survey of Oral/Dental Conditions Related to Tobacco and Alcohol Use in Mexican Adults," IJERPH, MDPI, vol. 11(3), pages 1-16, March.
    2. Alexander Gerber & Alexander Bigelow & Michaela Schulze & David A. Groneberg, 2015. "Brand Cigarillos — A Cheap and Less Harmful Alternative to Cigarettes? Particulate Matter Emissions Suggest Otherwise," IJERPH, MDPI, vol. 12(1), pages 1-11, January.

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