RELATIONSHIPS BETWEEN EXERCISE ECG AND ANGIOCARDIOGRAPHIC INDEXES OF CORONARY INSUFFICIENCY AND MYOCARDIAL FIBROSIS IN CORONARY HEART-DISEASE

Patients with coronary heart disease were examined with exercise ECG a nd angiocardiography. Maximum work capacity expressed as a percentage of the predicted normal exercise tolerance (Wmax%) was significantly a ssociated with the angiocardiographic score of the myocardial mass sub served by obstructed coronary arteries (MCOS). Variables related to my ocardial fibrosis (MF) such as post infarction ECG signs, the left ven tricular wall motion score (LVMS) and the ejection fraction of the lef t ventricle (LVEF) correlated significantly as did variables related t o reversible myocardial ischaemia or coronary insufficiency (CI), such as ST depression during exercise (STdepr), ST/W and ST/HR indices, ef fort angina (EA/W) index, the extent of collaterals (CollS), and 'MCOS - LVMS'. MF variables correlated weakly with CI variables. Wmax% cova riated with the variables related to both CI and MF, and most closely with MCOS. Discrepancies between results of exercise ECG and angiocard iography have to some extent been overcome by comparing appropriate pa rameters.