[Heart reHeart remodeling in patients with severe systolic dysfunction due tocancer chemotherapymodeling in patients with severe systolic dysfunction due tocancer chemotherapy.]

Objective Comparative analysis of structural and functional specific features of the heart in patients with toxic cardiomyopathy (TCMP) with a low left ventricular ejection fraction (LVEF) and severe, chronic heart failure (CHF) and in patients with idiopathic dilated cardiomyopathy (DCMP) and similar LVEF and CHF severity.Materials and Methods This observational, single-site study included 15 patients with TCMP (12 of them received treatment including anthracycline antibiotics and 3 patients received targeted therapies) and 26 patients with idiopathic DCMP. Data of echocardiography were compared for patients with TCMP and DCMP with comparably low LVEF of <40 %.Results In patients with severe heart damage associated with antitumor therapy with low LVEF, volumetric and linear indexes of left and right ventricles and the left atrium (left atrial volume index (LAVI), 33.7 (21.5-36.9) ml / m2; right ventricular end-diastolic dimension (RVDd), 2.49 (1.77-3.53) cm; and end-diastolic volume index (EDVI), 78.0 (58.7-90.0) ml / m2) were considerably less than in the DCMP group (LAVI, 67.1 (51.1-85.0) ml / m2; RVDd, 4.05 (3.6-4.4) cm; and EDVI, 117.85 (100.6-138.5) ml / m2, p<0.0001). Furthermore, LV wall thickness and pulmonary artery systolic pressure did not differ in these groups. Both in men and women with TCMP, LAVI and EDVI were significantly less than in men and women with DCMP.Conclusion The study showed significant differences in parameters of cardiac remodeling. In TCMP patients as distinct from DCMP patients, despite a pronounced decrease in LVEF, LV dilatation was absent or LV volumetric parameters were moderately increased with a more severe somatic status.