EFFICIENCY OF USING ELECTRONEUROMYOGRAPHY IN DIAGNOSTICS OF OCCUPATIONAL DISEASES

Abstract

The importance of using the method of electroneuromiography examination in the occupational pathological practice was grounded. The peculiarities of the change of index of electroneuromiography examination were analyzed and generalized in the patients with occupation disease of different etiology: caused by the exposure to the local vibration (40 persons), with occupational polyneuropathy of extremity induced by the complex exposure to the local and whole-body vibration and the physical overstrain (30 persons), firefighters with the diagnosis revealed as the consequence of the intoxication with the complex of toxic substances (50 persons), the patients with the diagnosis of chronic mercury intoxication (45 persons). In spite of the numerous number of the parameters which are used in the electroneuromiography examinations we consider the following indices as more important ones for clinical studies in the studied occupational pathologies: the decrease of rate of the impulse conductance in the distal section of the motor component of the middle and elbow nerves in the vibration-induced disease after exposure to the local vibration; along with the rate decrease of the impulse conductance in the distal nerve sections of upper extremities the decrease in the rate impulse conductance in the peripheral nerves in lower extremities was registered in the compressive neuropathy and polyneuropathy after exposure to the complex of the unfavorable production factors; the time period of the residual latency indicating the decrease in the impulse conductance at the level of the ending non-myelinized fibres, in upper and lower extremities for studying the clinically manifested polyneuropathy processes (in examination of the patients with intoxication induced by the complex of toxic substances); the time period of the residual latency and delaying the conductance rate of the impulse in the motor component of the tibial nerve for the latent (subclinical) injuries of the peripheral nerves which were found to be diagnosed in the patients with chronic mercury intoxication.