Human Response to Vibration

✍ Scribed by M.J. Griffin; J. Griffin

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 209 KB
• Volume: 161
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1993.1096

✦ Synopsis

J. A. Allen, M. A. Devlin, S. McGrann and C. C. Doherty 1992. Objective assessment of digital vasospasm. ( 7 pages, 0 figures, 1 table, 6 references) (in English)

Author's Abstract. The aim of this study was to develop objective testing for digital vasospasm. Finger systolic pressure (FSP) was measured using laser Doppler flowmetry to detect blood cell flux in fingertip skin. Following middle phalangeal cooling, absence of flux indicated an FSP of (0 \mathrm{mmHg}) and complete vasospasm. A reduction in FSP of (50 %) or more indicated partial vasospasm. The degree of cooling required to abolish flux indicated the severity of the vasospastic condition in an individual patient. FSP in 28 Raynaud's patients was not significantly different from that in 28 matched control subjects when the fingers were warm at (32^{\circ} \mathrm{C}). Finger cooling for 5 minutes did not significantly alter FSP in the control subjects, but produced vasospasm in 27 of the 28 Raynaud's patients. The false negative result occurred in a patient with clinically mild disease. This type of testing may prove helpful in the evaluation of "vibration white finger".

Topics: Vibration Syndrome (Vibration-induced White Finger).