Measurement of digital blood pressure before and after local cooling was performed in 10 men with traumatic vasospastic disease (TVD), 10 men who worked with vibrating tools but had no symptoms in arms or hands, and 10 men who had never worked with vibrating tools. The reduction in finger systolic pressure was significantly larger in the group with TVD than in either of the two reference groups (p < 0.001). There was no difference between the two reference groups. Nine of the 10 patients with TVD had a larger reduction in their finger systolic pressure after local cooling than anyone in either control group. The effects of two different room temperatures (17°C and 23°C) were evaluated. At the higher temperature the overlap between patients with TVD and controls was greater. The method described seems a feasible way to obtain an objective verification of TVD. (FSP). Distal to the cuff, arterial inflow results in an increase in volume that is measured with a dualchannel strain gauge plethysmograph (Medimatic SP 2) connected to a digital cooling system (Medimatic AS). With this device simultaneous measurements may be made in two fingers. In one finger (reference finger) the cuff is inflated by air and in the other (cooled finger) the cuff is inflated by circulating water at a preset temperature.The subjects were examined in a room where the temperature was controlled at about 17°C by cold air circulated by a fan. They were lightly dressed and rested in the supine position for 30 minutes while the history was taken. Then the water-perfused cuff was placed around the proximal phalanx of the ring finger and the air-filled cuff around the index finger of the same hand. In the patients with TVD the hand on 7 April 2019 by guest. Protected by copyright.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.