hand-arm vibration syndrome (hav)

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hand-arm vibration syndrome (hav) hand-arm vibration syndrome (hav) results from exposure to vibration (4 to 5000 hz); time exposure: one month to 30 years hav: symptoms / signs: circulatory (vasospasm) with local finger blanching); previously known as: vibration-induced white finger hav: first noticed on cold, wet, and windy morning, in the tips of the fingers most affected by vibration. intermittent numbness or tingling often precedes actual blanching. vasospasm rarely symmetrical, and reflects the subject’s grip on the vibrating tool. with continued exposure, vasospasm progresses proximally, and to other fingers. in advanced cases: cyanotic tinge, progressing to trophic skin changes (gangrene). worse in smokers. hav: symptoms / signs - continued: sensory & motor disturbances numbness, loss of finger co-ordination and dexterity; inability to perform intricate tasks. musculoskeletal disturbances table 1 : some tools associated with havs sander / buffers: orbital sanders oscillating (jitter-bug) rotary burrs floor polishers / buffers guns: hilte …

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ilte guns, & screwdrivers electricians drills (various) die shop workers guns (various), jack hammers, & vibrating pokers construction workers type of tools occupations some occupations associated with havs and type of tool - continued drills (various) miners grinders, & impact wrenches millwrights wrenches, & grinders mechanics jack hammers, vibrating pokers, & concrete saws labourers wrenches, grinders (various) iron workers type of tools occupations some occupations associated with havs and type of tool - continued grinders & fettling tools welders rivetting guns & wrenches rivetters handles & tongs press operators hilte guns pipe fitters type of tools occupations hav: diagnosis: based on history, and on exclusion of other causes of raynaud’s phenomenon: primary raynaud’s or constitutional white finger, local trauma to digital vessels, thoracic outlet syndrome, peripheral vascular disease, collagen diseases. hav: laboratory tests: doppler studies (for patency of limb blood vessels and blood pressure ratios in peripheral vessels); hav: laboratory …

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mptoms stage the stockholm workshop scale for the classification of cold-induced raynaud’s phenomenon in the hand-arm vibration syndrome the staging is made separately for each hand. in the evaluation of the subject, the grade of the disorder is indicated by the stages of both hands and the number of affected fingers on each hand; example “2l(2) / 1r(1)”, “- / 3r(4)”, etc. as in stage 3, with trophic skin changes in the finger tips. very severe 4 frequent attacks affecting all phalanges of the most fingers. severe 3 occasional attacks affecting distal and middle (rarely also proximal) phalanges of one or more fingers. moderate 2 occasional attacks affecting only the tips of one or more fingers mild 1 no attacks. 0 description grade stage management: smoking cessation; decrease or avoid exposure to vibration; hold tools as lightly as possible, to decrease vibration transmission; decrease vibration at source (anti vibration tools …

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hand-arm vibration syndrome (hav) hand-arm vibration syndrome (hav) results from exposure to vibration (4 to 5000 hz); time exposure: one month to 30 years hav: symptoms / signs: circulatory (vasospasm) with local finger blanching); previously known as: vibration-induced white finger hav: first noticed on cold, wet, and windy morning, in the tips of the fingers most affected by vibration. intermittent numbness or tingling often precedes actual blanching. vasospasm rarely symmetrical, and reflects the subject’s grip on the vibrating tool. with continued exposure, vasospasm progresses proximally, and to other fingers. in advanced cases: cyanotic tinge, progressing to trophic skin changes (gangrene). worse in smokers. hav: symptoms / signs - continued: sensory & motor disturbances numbness, l...

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