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Occupational vibration syndrome. Department of Occupational Medicine Finnish Institute of Occupational Health. Markku Sainio Markku Vanhanen. Definitions. Occupational vibration Vibration white finger (VWF) Hand-arm vibration syndrome (HAVS)
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Occupational vibration syndrome Department of Occupational Medicine Finnish Institute of Occupational Health Markku Sainio Markku Vanhanen
Definitions • Occupational vibration • Vibration white finger (VWF) • Hand-arm vibration syndrome (HAVS) • Raynaud's phenomenon (VWF most common cause of secondary Raynaud) • Whole-body vibration (WBV)
Vibration • Periodic motion of a body in alternate opposite directions from a position of rest • Mathematical "vector quantity"= described by both a direction and a magnitude • directions of vibration • acceleration • Present in most work settings where mechanical equipment is used
Measurements and standards • ACGIH TLVs 1984 • ISO 5349 (1986) • Directive 2002/44/EC… .. on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (vibration)...
HAVS as occupational disease in Finland 1990-2001 - Clear decline from the 70´s; along with the modernisation of forest industry and the decrease of chain saw use - About 20 new cases/year - New tools with high impact vibration --> HAVS development after shorter exposure <-> undiagnosed cases???
Screening of HAVS • Target of primary screening are the symptoms which are related to the exposure • “Blue book” • Investigations at general health care hospitals, regional and central Finnish Institute of Occupational Health • Register of occupational diseases