Fig. 1From: Early post-stress decrease in cardiac performance by impedance cardiography and its relationship to the severity and extent of ischemia by myocardial perfusion imagingStroke index and heart rate trends from rest to stress in patients with myocardial ischemia ≤10% (black arrows) and in those with myocardial ischemia > 10% (red arrows). Lines of CI are also provided. CI = Cardiac indexBack to article page