Abstract

Background: in patients with congestive heart failure (CHF), there is a change in indicators of heart mechanics against the background of myocardium remodeling. Currently, magnetic resonance imaging (MRI) and speckle tracking echocardiography provide additional options for assessing changes in heart mechanics. Evaluation of mechanics of the myocardium rotational movement according to coronarography (CAG) has not been found in available literature. In this regard, there is a need to develop a methodology that allows to obtain a mathematical description of rotation processes and heartbeat during the CAG.

Material and methods: study included 90 patients aged 30-71 to assess indicators of heart rotation mechanics. Subjects were divided into groups: with dilated cardiomyopathy (DCMP, n=30), left ventricular aneurysm (LVA, n=30) and patients with autonomic nervous system disorder (ANSD, n=30) without heart failure (control group). Mechanics of heart rotation was studied using the CAG technique, modified by us, based on mathematical calculations of the rotation angle in motion of points on the heart surface, determined on the coronary angiogram in two projections.

Results: study found out, that in patients with DCMP and LVA with chronic heart failure, the angle of rotation of the heart was significantly lower than in patients with ANSD who do not have heart disease (p <0,05). The link between impaired myocardial contractile function in patients with DCMP and LVA with chronic heart failure and a decrease in the heart rotation angle was confirmed (DCMP: ?²=9,774; df=1; P <0,05), (LVA: ?²=9,600; df=1; P <0,05).

Conclusion: coronarography technique that we modified, makes it possible to quantify changes in parameters of the heart mechanics in examined patients. This makes it possible to determine the presence or absence of heart failure, depending on results.

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