Heart rotation angle as an assessment criterion of the contractile function of the myocardium for cardiac surgery patients

Introduction. Chronic heart failure (CHF) is one of the most severe and prognostically unfavorable complications of cardiovascular diseases. Modern pharmacological treatment improves prognosis, but loses its efficiency at a certain stage. Hence the key role is given to surgical methods of CHF treatment, which determine the further prognosis and patient’s quality of life. The main indication for CHF patients’ surgical treatment is the clinical picture of progressing heart failure. In this regard, assessment of myocardial contractility based on mathematical analysis of cardiac mechanics parameters during cardiac cycle using angiographic images of coronary arteries may become a decisive moment for choosing further tactics of diagnosis and treatment of this pathology. Materials and Methods. A retrospective study included 120 patients aged 30 to 71 years to assess the indexes of cardiac rotation mechanics. The patients were divided into four groups: 1) patients with dilated cardiomyopathy (DCMP, n = 30); 2) patients with left ventricular aneurysm (LVA, n = 30); 3) patients who underwent cardiac surgery (heart valve replacement, (n = 30); 4) patients without structural and functional heart disease (control group, n = 30). Heart rotation mechanics was studied using our developed method of mathematical calculation of cardiac rotation angle according to coronary angiography (CAG) data. Results. In cardiac surgery patients with DCMP and LVA, heart rotation angle is statistically significantly lower than in patients without structural and functional changes of the heart (p function show_eabstract() { $('#eabstract1').hide(); $('#eabstract2').show(); $('#eabstract_expand').hide(); }