[Effect of working conditions on myocardial contractility in tube-rolling mill workers].

Tetrapolar rheography, M-echocardiography and visual searching ++Doppler echocardiography were used to study the state of the myocardium in 228 practically healthy male workers engaged in different working conditions at a tube-rolling mill. Revealed were increased myocardium and myocardium contraction disorders resulting from physical over-load in combination with heating microclimate and noise. The contributors proposed approaches to the preclinical diagnosis of such changes, which could be applied to the elaboration of preventive measures.