light and electron microscopic study of the myocardium of dogs two weeks after clinical death caused by the loss of blood was carried out and showed that the structural bases of the myocardium contractile function insufficiency during the postresuscitation period included the damage of the contractile apparatus of cardiomyocytes ( microlysis and fragmentation of myofibrils , deformation of z-bands , relaxation of sacromeres ) and marked lysis of the sacrotubular system leading to the violation of the excitation-contraction coupling .
C0027061
myocardium
C0225828
cardiomyocytes