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      Revisión sobre la evidencia de la relación entre exposición profesional al ruido y efectos extrauditivos no cardio-vasculares Translated title: Systematic review and evidence on occupational noise exposure and extra-auditory effects of no cardiovascular nature

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          Abstract

          Trabajo de revisión que tienen como objetivo conocer el nivel de evidencia existente sobre los efectos extra-auditivos de la exposición profesional al ruido relacionados con: alteraciones bioquímicas, efectos neuro-piscológicos, salud reproductiva y accidentes de trabajo mediante el análisis sistemático de la producción científica publicada entre 1995 y 2008. La búsqueda de las referencias bibliográficas se realizó mediante términos "Major Topic"y "MeSH" para MEDLINE y términos "Decriptors" para OSH update. Se recuperaron un total de 370 referencias y se incluyeron en la revisión todos los estudios experimentales, estudios de cohortes y estudios casos control y aquellos estudios trasversales que cumplieron al menos con cinco de los nueve criterios que la declaración STROBE establece para los estudios observacionales. Fueron seleccionados para su revisión a texto completo un total de 35 artículos: 14 estudios experimentales, 2 estudios de cohortes, 6 estudios casos control, 12 estudios transversales y 1 estudio de validación. La asignación del nivel de evidencia se realizó de acuerdo a los criterios SIGN. La selección y revisión de los artículos se realizó mediante revisión por pares, los casos de discrepancia entre pares se resolvió mediante consenso. Encontramos un alto nivel de evidencia (1+) para influencia de la exposición profesional al ruido sobre el incremento de la secreción de cortisol y noradrenalina, fatiga y disminución del rendimiento, funciones cognitivas y memoria, disminución en la calidad del sueño, estrés e irritabilidad y percepción de malestar. Con un nivel de evidencia 2++ se relacionó la exposición profesional al ruido con la accidentalidad laboral. No encontramos unos resultados concluyentes para la determinación de la relación entre exposición profesional al ruido sobre la salud reproductiva. Existe una diversidad en los métodos utilizados para la evaluación de la exposición profesional al ruido, empleándose tanto métodos de medición cuantitativos y métodos cualitativos de percepción subjetiva. Nuestros resultados son coincidentes con las revisiones realizadas anteriormente por Smith AP y cols (1991) y Butler MP y cols (1999).

          Translated abstract

          Review aimed at ascertaining the level of evidence on non-auditory effects related with occupational exposure to noise concerning: biochemical, neuro- psychology effects, reproductive health and accidents at work through a systematic analysis of the scientific literature published between 1995 and 2008. The search for references was conducted using terms "Major Topic" and "MeSH" terms for MEDLINE and "Decriptors" for OSH update. We retrieved a total of 370 references, were included in the review all experimental studies, cohort studies and case control studies and those cross-sectional studies that had at least five of the nine criteria that the STROBE Statement provides for observational studies. Were selected for full text review a total of 35 studies: 14 experimental studies, 2 cohort studies, 6 case control studies, 12 cross-sectional studies and 1 validation study. The assignment of the level of evidence was performed according to SIGN criteria. The selection and review of articles was done by peer review, cases of disagreement between pairs was resolved by consensus. We found a high level of evidence (1+) about the influence of occupational noise exposure and the increased secretion of cortisol and norepinephrine, fatigue and decreased performance, cognitive function and memory, decreased quality of sleep, stress and irritability annoyance. A level of evidence 2++ was identify for occupational noise exposure and work accidents. We found no conclusive results in determine the relationship between occupational exposure to noise on reproductive health. There is diversity in the methods used for assessing occupational exposure to noise, using both quantitative measurement methods and qualitative methods of subjective perception. Our results are consistent with those previously reported by Smith AP et alt (1991) and Butler MP et al (1999).

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          Most cited references125

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          Users' guides to the medical literature. II. How to use an article about therapy or prevention. A. Are the results of the study valid? Evidence-Based Medicine Working Group.

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            The Noise/Stress Concept, Risk Assessment and Research Needs.

            In principle, the noise/stress hypothesis is well understood: Noise activates the pituitary-adrenal-cortical axis and the sympathetic-adrenal-medullary axis. Changes in stress hormones including epinephrine, norepinephrine and cortisol are frequently found in acute and chronic noise experiments. The catecholamines and steroid hormones affect the organism's metabolism. Cardiovascular disorders are especially in focus for epidemiological studies on adverse noise effects. However, not all biologically notifiable effects are of clinical relevance. The relative importance and significance of health outcomes to be assessed in epidemiological noise studies follow a hierarchical order, i.e. changes in physiological stress indicators, increase in biological risk factors, increase of the prevalence or incidence of diseases, premature death. Decision-making and risk management rely on quantitative risk assessment. Epidemiological methods are the primary tool for providing the necessary information. However, the statistical evidence of findings from individual studies is often weak. Magnitude of effect, dose-response relationship, biological plausibility and consistency of findings among studies are issues of epidemiological reasoning. Noise policy largely depends on considerations about cost-effectiveness, which may vary between populations. Limit or guideline values have to be set within the range between social and physical well-being - between nuisance and health. The cardiovascular risk is a key-outcome in non-auditory noise effects' research because of the high prevalence of related diseases in our communities. Specific studies regarding critical groups, different noise-sources, day/evening/night comparisons, coping styles and other effect-modifying factors, and the role of annoyance as a mediator of effect are issues for future research in this field.
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              Users' guides to the medical literature. VI. How to use an overview. Evidence-Based Medicine Working Group.

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                mesetra
                Medicina y Seguridad del Trabajo
                Med. segur. trab.
                Escuela Nacional de Medicina del Trabajo. Instituto de Salud Carlos III (Madrid, Madrid, Spain )
                0465-546X
                1989-7790
                March 2010
                : 56
                : 218
                : 49-71
                Affiliations
                [01] Madrid orgnameInstituto de Salud Carlos III orgdiv1Escuela Nacional de Medicina del Trabajo España
                [02] Alcalá de Henares orgnameUniversidad de Alcalá de Henares orgdiv1Departamento de Ciencias Médico-Sociales España
                Article
                S0465-546X2010000100005
                10.4321/s0465-546x2010000100005
                4ffa11da-ebdf-493d-a78f-a8ca967a2432

                This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 International License.

                History
                : 29 January 2010
                : 18 February 2010
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 85, Pages: 23
                Product

                SciELO Spain


                occupational health,reproductive health,work accidents,stress,Ruido,salud laboral,salud reproductiva,accidentes de trabajo,efectos extra-auditivos,estrés,rendimiento,alteraciones del sueño,Noise,non auditory effects,performance,sleep disturbances

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