Impedance cardiographic indices of the cardiac inotropic state during exercise in men with coronary artery disease

The inotropic state of the heart can be effectively indexed by impedance cardiography (ZCG). Eight men with coronary artery disease pedalled at rates of 30, 50, 70, and 90 rpm and at a constant WR of 60 watts to determine the effects of rpm increases on ZCG indices of the cardiac inotropic state