Assessment of left ventricular systolic function by mitral annular displacement derived from speckle tracking echocardiography in patients with ischemic heart disease

Abstract

Aims: Evaluation of left ventricular systolic function by mitral annular displacement derived from speckle tracking echocardiography in ischemic heart disease and investigate the relationship and correlation between the mitral annulus displacement and echocardiographic parameters to evaluate left ventricular systolic function, New York Heart Association (NYHA) classification. Methods: Cross-sectional descriptive study on 106 patients with ischemic heart disease examined and treated at Hospital of Hue Medical University and 106 controls who were health check-ups or inpatients without cardiovascular disease at Hospital of Hue Medical University from March 2019 to October 2021, meeting the criteria for selecting patients according to research objectives. Mitral annular displacement derived from speckle tracking echocardiography was measured in 2-chamber and 4-chamber views from the apex using Qlab 13 offline software. Results: Mean age is 66.09 ± 13.25 years old, male/female: 1.3. Mitral annular displacement derived by speckle tracking echocardiography in patients with coronary artery stenosis was significantly lower than in the control group (p < 0.01). Mitral annular displacement derived by speckle tracking echocardiography has a strong positive correlation with left ventricular ejection fraction on 2D echocardiography (r = 0.82), and has a very strong positive correlation with the peak systolic mitral annular velocity on tissue Doppler (r = 0.88), moderately positive correlation with mitral annular plane systolic excursion on M-mode (r = 0.37). There is a statistically significant relationship between mitral annular displacement derived from speckle tracking echocardiography and New York Heart Association (NYHA) classification (p < 0.05). Conclusions: Mitral annular displacement derived by speckle tracking echocardiography is a simple, rapid, endothelium-independent parameter and may be used in the assessment of left ventricle systolic function. Especially, for patients with difficulty to identify endothelium to evaluate EF. Key words: left ventricular systolic, mitral annular, Doppler.