[Myoneuropathy in patients with chronic renal failure treated with hemodialysis (HD) and intermittent peritoneal dialysis (IPD). I. Evaluation of myoelectric activity of selected skeletal muscles in patients with chronic renal failure treated with hemodialysis and intermittent peritoneal dialysis].

The aim of the study was the analysis of the sequence of electrophysiological changes occurring in the skeletal muscles in patients with chronic renal failure treated with hemodialysis (HD) and intermittent peritoneal dialysis (IPD). In 30 patients (10 treated with IPD-group I, 20 with HD-group II) the global electromyography (EMG) was determined in the muscles: pectoralis, obliqus and rectus abd., biceps brachii, thenar and hypothenar. The fatigue test was determined in the m. biceps brachii. The examinations were done twice during the 12 months of observations. The analysis of the material showed that myoelectrical activity of the examined muscles was significantly lower compared to a control group and did not changed during the 12 months of observations. The results of the fatigue test showed that in uremic patients the fatiguability of m. biceps brachii was significantly greater and was deeper after 12 months of observations. The analysis of the maximal inspiratory and expiratory pressure showed that respiratory muscles in uremic patients were weak. The results of the measurements the hand grip pressure showed that hand muscles were weak also.