Objectives-To study the relation between the prevalence of vascular disorders (white finger) and vibration exposure in a group of 222 forestry workers, of whom 164 (73.9%) had work experience limited to antivibration (AV) chain saws only and 58 (26.1%) had operated both non-AV and AV chain saws.
Vibration was measured on a representative sample of AV and non-AV chain saws.
Daily vibration exposure was assessed as eight hour energy equivalent frequency weighted acceleration (A (8)). A lifetime vibration dose was estimated for each of the forestry workers.
The overall prevalence of VWF among the forestry workers was 23.4%. The diagnosis of VWF was made in 13.4% of the forestry workers who handled only AV chain saws and in 51.7% of those who had also operated non-AV chain saws in the past.
Raynaud's phenomenon was found in 2.6% of the controls.
In the forestry workers, the risk for VWF showed positive increments with each increment of vibration dose, suggesting a monotonic dose-response relation.
Conclusions-In this study of VWF among forestry workers, the estimated dose-response relation showed that if the magnitude of vibration acceleration is doubled, the total duration of exposure should be halved to produce an equivalent effect.
These findings suggest a revision of the risk estimates for VWF currently provided by ISO 5349.
Mots-clés Pascal : Raynaud syndrome, Trouble dû aux vibrations, Main, Membre supérieur, Exposition professionnelle, Homme, Foresterie, Relation dose réponse, Epidémiologie, Prévalence, Tronçonnage, Médecine travail, Appareil circulatoire pathologie, Vaisseau sanguin pathologie, Capillaire sanguin pathologie, Peau pathologie, Système nerveux autonome pathologie, Acrosyndrome
Mots-clés Pascal anglais : Raynaud phenomenon, Vibration induced disorder, Hand, Upper limb, Occupational exposure, Human, Forestry, Dose activity relation, Epidemiology, Prevalence, Cross-cutting, Occupational medicine, Cardiovascular disease, Vascular disease, Capillary vessel disease, Skin disease, Diseases of the autonomic nervous system, Acrosyndrome
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0579204
Code Inist : 002B12B03. Création : 01/03/1996.