Traumatic Vasospastic Disease

Shah, Ami A.

doi:10.1007/978-1-4939-1526-2_9

Cited by 1 publication

(2 citation statements)

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“…Such vibrations are liable to cause angioneuronal disorders. In particular, they can lead to the development of vibration-induced Raynaud's syndrome [14,15], i.e., Vibration White Finger (VWF) [16]. In French companies, more than three-quarters of employees exposed to hand-arm vibrations use handheld or hand-guided machines [2], generating vibrations of frequencies higher than 50 Hz.…”

Section: Shortcomings In the Standardized Estimation Of Vibration Exp...mentioning

confidence: 99%

“…The physiopathology of vibration-induced Raynaud's syndrome is very complex, highly multifactorial, and still remains poorly understood [15,16,[27][28][29][30]. In a highly schematic and simplified way, we have modeled the development of Raynaud's vibration syndrome in several stages, from which emerge two steps in time and space (Figure 1).…”

Section: The Original Strategy Implementedmentioning

confidence: 99%

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A Multiscale Approach for Predicting Certain Effects of Hand-Transmitted Vibration on Finger Arteries

et al. 2022

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Prolonged exposure to strong hand-arm vibrations can lead to vascular disorders such as Vibration White Finger (VWF). We modeled the onset of this peripheral vascular disease in two steps. The first consists in assessing the reduction in shearing forces exerted by the blood on the walls of the arteries (Wall Shear Stress—WSS) during exposure to vibrations. An acute but repeated reduction in WSS can lead to arterial stenosis characteristic of VWF. The second step is devoted to using a numerical mechano-biological model to predict this stenosis as a function of WSS. WSS is reduced by a factor of 3 during exposure to vibration of 40 m·s−2. This reduction is independent of the frequency of excitation between 31 Hz and 400 Hz. WSS decreases logarithmically when the amplitude of the vibration increases. The mechano-biological model simulated arterial stenosis of 30% for an employee exposed for 4 h a day for 10 years. This model also highlighted the chronic accumulation of matrix metalloproteinase 2. By considering daily exposure and the vibratory level, we can calculate the degree of stenosis, thus that of the disease for chronic exposure to vibrations.

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Section: Shortcomings In the Standardized Estimation Of Vibration Exp...mentioning

confidence: 99%