"Hibernating myocardium is most commonly seen in the setting of chronic ischaemia when myocardial cells adapt to longstanding poor perfusion by entering a state of low metabolic activity. This includes loss of myocardial contractility in the tissue affected. This can result from progression of chronic coronary atherosclerosis or as a result of an acute ischaemic event. In the later phase, it is analogous to stunned myocardium."
"matched rest and stress perfusion abnormality that does not normalise upon FDG-PET/CT"
"Stress echocardiography is primarily concerned with the assessment of the myocardial contractile reserve, differentiating wall motion abnormalities due to irreversible scarring from reversible defects due to critical stenosis/ischaemia 6. Dobutamine stress echocardiography (DSE) involves incremental administration of the inotrope dobutamine (starting around 2.5 mcg/kg/min) while assessing wall motion with transthoracic echocardiography. Each dosage increase should be preceded by acquisition of images from the parasternal (long and short axis views) and apical (4 chamber and 2 chamber views) windows, analysing changes in left ventricular global and regional systolic function:"