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Physiopathologie du syndrome de Raynaud d'origine vibratoire
Près d'un salarié sur cinq déclare être exposé aux vibrations au moins un quart de son temps de travail dans l'Union européenne. Le syndrome des vibrations main-bras susceptible d'en résulter est une pathologie complexe, dont la physiopathologie n'est pas encore totalement connue, associant des signes neurologiques, vasculaires et/ou ostéo-articulaires. Des travaux de recherche visent à mieux connaître la relation entre l'exposition aux vibrations mainbras et leurs effets sur les troubles angioneurotiques du...
A critical review of evidence related to hand-arm vibration syndrome and the extent of exposure to vibration
This report describes a systematic literature review on the nature of the exposure-response relationship between hand-transmitted vibration and the elements of hand-arm vibration syndrome (HAVS), ie the vascular, neurosensory and musculoskeletal components. Annex C of ISO 5349-1:2001 contains an exposure-response relationship for vascular HAVS, yet this review of the literature has not found any strong evidence of a precise quantitative relationship between exposure to vibration and health outcomes, either for vascular or neurosensory HAVS. There is some evidence that suggests possible limited...
Noise and cardiovascular disease: a review of the literature 2008-2011
The association between noise and cardiovascular disease has been studied for several decades and the weight of evidence clearly supports a causal link. Nevertheless, many questions remain, such as the magnitude and threshold level for adverse effects of noise, how noise and other cardio-toxic pollutants (such as particulate matter) may interact in disease causation, identification of vulnerable populations, of exposure modifiers (i.e., location of bedrooms) and of other effect-modifiers (i.e., gender), and how epidemiologic methodology can be improved. This review describes contributions to literature...
12e conférence internationale 'effets sur l'homme des vibrations transmises par les machines tenues ou guidées à la main'
Co-organisée par les homologues canadiens et américains de l'INRS et des universitaires, cette conférence a rassemblé à Ottawa (Canada) en juin 2011 une centaine d'experts d'Amérique, d'Asie et d'Europe. En introduction du congrès, les organisateurs ont demandé à l'INRS de faire le point sur l'évolution de la prévention des vibrations ces 40 dernières années en Europe. La soixantaine de communications concernaient la clinique, les effets physiologiques et biodynamiques, l'épidémiologie...
Cardiovascular Risk in Rotogravure Industry
Objective: To verify whether the occupational hazards in the rotogravure industry can be associated with cardiovascular effects. Methods: We evaluated cardiovascular parameters and audiometric tests and analyzed noise, solvents, and shift work in 44 exposed and 44 unexposed workers. Results: Unlike unexposed workers, the rotogravure workers showed significant increase of mean systolic and diastolic blood pressure (BP) values (P = 0.019; P = 0.003), higher frequency of hypertension (P = 0.002) and electrocardiographic abnormalities (P = 0.0001), significant reduction or no variation of BP response...
For certain types of shocks, acute reductions in finger blood flow can be predicted from the rms acceleration.
This study investigated how reductions in finger blood flow depend on shock repetition rate and the peak and rms magnitude of acceleration. Different repetition rates (1.3-83.3 s(-1)) and different peak magnitudes (10-88 ms(-2) peak) but the same rms acceleration (10 ms(-2) rms) caused similar decreases in blood flow in fingers on exposed and unexposed hands. Shocks with a 83.3 s(-1) repetition rate, peak magnitude of 10 ms(-2) and rms acceleration of 10 ms(-2) provoked greater reduction in finger blood flow than shocks with the same peak magnitude but lower repetition rate (21 or 5.3 s(-1)) and...
Models of the substructures of the hand-arm system can be used to help design and analyze palm and orbital sanders
Prolonged, intensive exposure to vibrations from palm and orbital sanders could cause finger disorders. They are associated with the biodynamic responses of the fingers. This study confirmed that the distributed hand responses generally varied with locations on each finger, vibration frequencies, and applied hand force. This study enhanced the understanding of the biodynamic responses of the fingers and hand exposed to vibrations on a contact surface with a large effective radius such as that found on palm and orbital sanders. These results are useful for developing hand and finger models required...
A postwoman delivering mail using a low-powered motorcycle was diagnosed with bilateral Raynaud's phenomenon.
This case report presents the hypothesis that the effect of HAV may result not in a single disorder, but in multiple disorders. Although occupational epidemiological studies do not usually address comorbidity, it is not uncommon for exposure to produce multiple effects (e.g. an association between HAV and tendonitis has been reported) . Comorbidity due to occupational exposure therefore needs further epidemiological investigation. For 15 years the woman had driven a two-stroke 50 cc motorcycle to deliver mail and was exposed to hand-arm vibration for 4 h/day. Before delivering the mail, she had...
Bruit et vibrations, une combinaison dangereuse.
La perte auditive des travailleurs atteints des «doigts blancs» est plus marquée que celle de ceux non atteints. L'exposition au bruit et la durée de l'exposition sont associées à l'acquisition de la surdité. La présence des doigts blancs augmente le risque d'une augmentation de la perte auditive. Cette étude auprès de travailleurs forestiers montre des différences significatives à 500 et 1000 Hz. Source : Le bruit et les vibrations: une combinaison dangereuse. A. Turcot, S.-A. Girard et al. Dans Les...
Review of literature relevant in the diagnosis of HAVS
Health surveillance for those exposed to hand-arm vibration, and the diagnosis of hand-arm vibration syndrome (HAVS) is heavily dependent upon self-reporting of symptoms. However, this self-reporting may not be accurate for a number of reasons including the ability of individuals to recall symptoms, misunderstanding or misidentification of symptoms and fears regarding an individual's job, or ongoing litigation. Therefore techniques that could be used to obtain better information, or tests that could be applied to obtain a more accurate diagnosis may be useful in this area. http://www.hse.gov...

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