What are the findings that indicate elevated risk in exercise echocardiography and exercise nuclear MPI?
Findings that indicate elevated risk in exercise echocardiography and exercise nuclear MPI include a reduction in reduced post-stress LVEF $5% or a global LVEF ,45%, transient ischemic LV dilation, increased lung or right ventricular uptake, or abnormal coronary reserve (detected on myocardial perfusion PET). For echocardiography, a wall motion abnormality extending beyond 2 to 3 segments as well as the presence of change in .1 coronary territory are suggestive of higher risk. For both tests, multiple defects in different coronary territories with either moderately reduced perfusion (or $10% of the myocardium) or inducible wall motion abnormalities with transient ischemic dilatation are suggestive of severe CAD.