THE CORRELATION OF REGIONAL LEFT VENTRICULAR ASYNERGY WITH LEFT VENTRICULAR FUNCTION IN ISCHEMIC HEART DISEASE
Cine-ventriculography and selective coronary arteriography were performed in 59 cases with ischemic heart disease and correlation between the left ventricular function and left ventricular wall motion was examined. Localized asynergy of the left ventricular wall was seen in 81% with myocardial infarction, but in only 19% with angina pectoris. The value of ejection fraction was 0.75 ± 0.10 in normal wall motion, 0.60 ± 0.10 in asyneresis, 0.40 ± 0.19 in akinesis and 0.49 ± 0.11 in aneurysm. A close correlation was recognized between the size of asynergy and ejection fraction and also between the left ventricular circumferential shortening ratio and ejection fraction. Correlation between LVEDP and ejection fraction was r =-0.53 in angina pectoris, but r=-0.30 in myocardial infarction. In order to evaluate the left ventricular function in ischemic heart disease, it is very important to find out the degree and the size of asynergy, the wall motion in non-infarcted myocardium and coronary arterial lesion by cine-ventriculography and coronary arteriography.