[Myocardial contractile capacity in ischemic heart disease depending on the degree of coronary arteriosclerosis and the presence of parietal asynergy of the left ventricle].

Myocardial contractility was studied in 44 patients with ischaemic heart disease (28 with asynergy) without congestive circulatory insufficiency depending on the degree of coronary atherosclerosis and regional disorder in the movement of the wall of the left ventricle by ventriculography and tensiometry (dp/dt max, Veraguth index, VCE40; t-dp/dt max). No dependence was detected between the growth of the total lesions of cardiac arteries and the increase of the end diastolic and end systolic volumes and the fall of the ejection fraction in patients with normokinesia of the left ventricle. However, a strong inverse relationship has been established between the number of the affected segments of the heart and the ejection fraction (r = -0.90). It was shown that indices of contractility reflecting the pre-ejection phase (dp/dt max, Veraguth index VCE40; t-dp/ max) are less sensitive in determining the cardiac insufficiency than Vcf and must be interpreted simultaneously with the results of the regional contractility according to the ventriculography data.