In order to study the dynamics of the standard echocardiographic values and parameters of left ventricular regional myocardial contractility in patients with non-ST segment elevation myocardial infarction we had examined 114 patients, of whom 79 presented with hibernated myocardium and 35 patients with non-hibernated myocardium. Along with the assessment of the basic echocardiographic values and left ventricle ejection fraction which do not provide comprehensive information regarding the dynamics of regional myocardial contractility in order to detect viable myocardium in patients with non-ST segment elevation myocardial infarction, it is necessary to assess the degree of local contractility and wall motion score index in the dynamics of the 21 days of follow-up.