Value of longitudinal systolic deformation of a myocardium of the left ventricle at patients with coronary heart diseas
The purpose of article is comparison of the longitudinal systolic deformation (LSD) of a myocardium of the left ventricle with the help speckle-tracking of echocardiography (STE) in the two-dimensional mode in identification of a hemodynamics of a significant stenosis of coronary arteries at patients with coronary heart disease and at patients is after stenting of various sites of coronary arteries. Have been included 61 patients with the known or estimated diagnosis of the coronary heart disease and planned coronarography in a research the preliminary transthoracic echocardiographic with use of a technique of speckle-tracking on AFI algorithm has been conducted. To patients diagnostic or invasive coronarography within 7±3 days after echocardiography for establishment of an anatomic arrangement of a stenosis, his importance and in need of performing stenting has been executed. Further within 3 days repeated echocardiography with use of speckle-tracking for the purpose of measurement of possible change of the design and estimate LSD of a myocardium was conducted. It was succeeded to define that at patients with atherosclerotic defeat of coronary arteries significant decrease in indicators global and segmentary the design and estimate documentation of the LSD of a myocardium in comparison with patients without coronary artery stenosis was observed. (21,6±2,4% in comparison with 19,6±2,5%; р<0,05). At patients with atherosclerotic multivascular stenosis decrease in indicators segmentary the design and estimate documentation of the LSD of a myocardium in the segments relating to the pool of anterior interventricular artery in comparison with patients with one-vascular defeat of the coronary course that is caused by the greatest zone of coronary blood supply of this coronary artery (r=-0,29; p<0,05). In case of stenting of coronary artery at patients with normal systolic function of the left ventricle and a moderate comorbidity, significant changes of indicators global and segmentary the design and estimate documentation in the first three days after stenting isn't observed.