Table 4

 Classifications and clinical implications of stress echo responses. Modified from the American Society of Echocardiography guidelines8

ClassificationRestStressImplication
*Low dose dobutamine; if wall motion deteriorates at higher level of stress viable myocardium is supplied by coronary artery with significant stenosis (biphasic response).
NormalNormalHyperdynamicNo ischaemia
IschaemiaNormalAbnormalIschaemia induced
ScarAbnormalNo changePost myocardial infarct,
No inducible ischaemia
ViabilityAbnormalImprovement*Hibernation, stunning