[Coronary circulation and left ventricular function in patients with transmural myocardial infarct]. / Sostoianie koronarnogo krovotoka i funktsii levogo zheludochka u bol'nykh, pereneshikh transmural'nyi infarkt miokarda.

Hemodynamics and left-ventricular segmental contractility were examined in 72 patients, subjected to selective coronarography and ventriculography. Forty-six patients had a history of anterior, and 26, posterior, transmural myocardial infarction (MI). Atherosclerotic stenosis of coronary arteries (more than 75% of vascular diameter) was revealed in 67 of 72 patients. Residual occlusion was shown to occur more commonly in the right coronary artery. Collateral flow was more commonly associated with a history of myocardial infarction affecting the posterior wall of the left ventricle, while segmental contractility disorders, even aneurysms, and generalized disturbance of left-ventricular contractility, as manifested in reduced mean rate of myocardial circular fibre shortening, were more typical for the affection of the anterior wall of the left ventricle.

[Relationship between myocardial contractility and collateral circulation in patients with ischemic heart disease]. / O zavisimosti sokratimosti miokarda ot kollateral'nogo krovoobrashcheniia u bol'nykh ishemicheskoi bolezn'iu serdtsa.

By analyzing coronary angiograms and ventriculograms of 61 patients with the narrowed lumen of one or several coronary vessels by 90-100%, the dependence of the contractile function of the myocardium on the development of the collateral circulation in the cardiac muscle was studied. The assessment of the segmentary contractility of the left ventricle served as a criterion of the efficiency of the collateral circulation. The segmentary contractility was shown to be dependent on the presence or absence of the collateral circulation and also on the number of damaged vessels. The collateral circulation was also demonstrated to contribute to the maintenance of the contractile function of the myocardium.