[Myocardial blood flow and its relation to myocardial function in ischemic heart disease patients with various manifestations of coronary arteriosclerosis].

An analysis of variance applied to myocardial flow (MF) data obtained using 133Xe clearance technique, coronaro- and ventriculography in 53 coronary patients and 22 patients with intact coronary arteries, demonstrated a relationship between the MF level, myocardial contractility, oxygen requirement of the heart muscle and left-ventricular isovolumic relaxation time. The rate of myocardial fibres circular shortening and the ejection fraction were found to be the most sensitive indicators of myocardial contractility, responding to MF reduction. The latter was noted in coronary patients with ischemic and postinfarction asynergies. In cases of a normokinetic left ventricle, MF did not differ significantly from that of the controls, irrespective of the extent of lesion.