LEFT VENTRICULAR MECHANICS AFTER CORONARY ARTERY STENTING IN STABLE ISCHEMIC HEART DISEASE PATIENTS
The aim of this study was to assess the left ventricular (LV) mechanics and dynamics after coronary artery stenting in patients with stable ischemic heart disease and a single damaged coronary artery. Methods: The analysis was performed in 28 stable ischemic heart disease patients (20 men; age 59±6.47 years) with the LV ejection fraction (EF) of 55% and more. Based on the established indications, PCI was performed in all patients. Syntax score did not exceed 22 (10.78±6.12). Two-dimensional echocardiography and speckle tracking imaging were performed for assessment of the LV global rotation, global rotation rate at systole and early diastole at the basal, apical, and papillary muscle levels, twisting, untwisting and torsion before and during the first week after PCI. Results: There were no differences in the values of global rotation, global rotation rate at systole and early diastole, twisting, untwisting and torsion of the left ventricle in patients with the right coronary artery (RCA) and with the left anterior descending artery (LAD) stenosis. The values of global rotation, global rotation rate, twisting, untwisting and torsion of the left ventricle in patients with stable ischemic heart disease and normal LV EF did not depend on the presence of RCA and LAD stenosis. PCI with RCA and LAD stenting did not affect global rotation, global rotation rate, twisting, untwisting and torsion of the left ventricle in patients with stable ischemic heart disease and preserved LV EF. We found the increased rotation rate in systole and early diastole of the apical segments of RCA region after PCI. In LAD PCI, no similar pattern was found.