DYNAMICS OF NEUROMUSCULAR ACTIVITY IN PATIENTS WITH LOCAL COLD INJURY

The OBJECTIVE was to study the changes of bioelectric activity of muscles in patients with local cold injury of the feet.

MATERIAL AND METHODS. Non-invasive method of cutaneous electroneuromyography was used to evaluate the bioelectrical activity of muscles. The study was conducted in 52 patients with local cold injury of III–IV degree of the lower extremities of the late reactive period and the period of granulation and epithelialization. M-response amplitude, residual latency and propagation velocity of the excitation were estimated.

RESULTS. In patients with local cold injury, there was a decrease in the bioelectric activity of the limb muscles proximal to the affected area. M-response amplitude and the propagation velocity of the excitation decreased in the patients in the late reactive period, while the residual latency increased. In patients with frostbite limbs during granulation and epithelialization, there was a tendency to restore the level of bioelectrical activity of muscles relative to the late reactive period.

CONCLUSION. The basis of the adverse effects of local cold injury was “chronic” endothelial dysfunction and local neuropathy.

The authors declare no conflict of interest.

The authors confirm that they respect the rights of the people participated in the study, including obtaining informed consent when it is necessary, and the rules of treatment of animals when they are used in the study. Author Guidelines contains the detailed information.

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