Audiometric findings of printing press workers exposed to noise and organic solvents.

Autor:	Cabello-López A; Occupational Health Research Unit, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico., Chávez-Gómez NL; Division of Internal Medicine, Hospital Regional 'Adolfo López Mateos', Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado, Mexico City, Mexico., Torres-Valenzuela A; Division of Audiology, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico., Aguilar-Madrid G; Division of Research and Postgraduate Education, Claustro Universitario de Chihuahua, Chihuahua, Mexico., Trujillo-Reyes O; Occupational Health Research Unit, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico., Madrigal-Esquivel C; Occupational Health Research Unit, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico., Haro-García LC; Public Health Department, Faculty of Medicine, Universidad Nacional Autónoma de México, Mexico City, Mexico., Skjönsberg Å; Department of Clinical Science, Intervention and Technology, Division of Audiology, Karolinska Institutet, Huddinge, Sweden., Juárez-Pérez CA; Occupational Health Research Unit, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico.
Jazyk:	angličtina
Zdroj:	International journal of audiology [Int J Audiol] 2021 Jan; Vol. 60 (1), pp. 8-15. Date of Electronic Publication: 2020 Jul 31.
DOI:	10.1080/14992027.2020.1795735
Abstrakt:	Objective: To determine if exposure to organic solvents and noise is associated with audiometric results among workers from a printing press in Mexico City. Design: Cross-sectional study. Study Sample: One hundred and seventy-six male workers at a printing press in Mexico City exposed to noise and organic solvents, including xylene, and 103 non-exposed male workers as reference group. Hearing thresholds were assessed with pure-tone audiometry. Results: Poorer hearing thresholds were observed among printing workers than non-exposed controls, particularly among groups with over 5 years of exposure. Hearing thresholds differences were observed in the frequencies above 500 Hz, especially in 4000 Hz in all exposure groups compared to the reference. Adjusted models for age and previous exposure to noise and organic solvents showed worse hearing thresholds as years of seniority increased -β coefficients (95% CI): ≤5 years: 3.06 dB (0.01, 6.10); >5-10 years: 4.51 dB (1.13, 7.89); >10 years: 4.58 dB (1.20, 7.96). Further analyses showed no interaction between noise and organic solvents on hearing thresholds, considering both current and previous occupational exposures. Conclusion: Exposure to noise levels that were below recommended exposure limits and organic solvents were associated with poorer hearing thresholds than those observed among non-exposed study participants. This suggests that workers exposed to solvents should be included in hearing conservation programmes, even when noise exposures are below 85 dB. If only noise levels were taken into consideration in the risk assessment of this worker population, the risk of hearing effects could have been overlooked.
Databáze:	MEDLINE
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