Preliminary research on non-invasive technique of nerve conduction in Checking vibration-induced neuropathy

Objective To analyze the clinical value of non-invasive nerve conduction examination in diagnosis of vibration-induced neuropathy. Methods A total of 15 workers exposed to hand-arm vibration in a polishing workshop were randomly selected as the observation object. The Nicolet Viking quest electromyography was applied to examine nerve conduction function with traditional needle electrodes and the skin surface electrodes respectively. The results getting from these two methods were compared, including the conduction distal latency,amplitude and conduction velocity of median nerve and ulnar motor nerve of both sides. Results There were statistical differences in the amplitude of the left median nerve CMAP and distal motor latency of right median nerve after compared with two teams (P<0.05). However, the differences didn't affect the diagnosis according to the normal reference value recomnended by Peking Union Medical College Hospital, and the other inspection data had no significant differences(P>0.05). It could be considered that the results of 15 subjects showed there was no difference between using traditional needle electrodes and skin surface electrodes. Conclusion Surface electrodes can replace the needle electrode. Noninvasive nerve conduction function examination in clinical diagnosis of vibration neuropathy has a broad application.