Evaluation of left ventricular systolic function in patients with chronic total occlusion after PCI by two-dimensional speckle tracking imaging
Shen Yan
Luo Zhiling
Wang Jiang
Li Li
Dong Yunxing
Zhao Wanyu.
Abstract：Objective To evaluate the effect of two-dimensional speckle tracking imaging (2D-STI) on left ventricular strain after percutaneous coronary intervention (PCI) in patients with chronic complete occlusion (CTO). Methods From September 2017 to May 2018, 43 patients with CTO who underwent coronary angiography and PCI were selected as CTO group (n=43). Thirty healthy volunteers who underwent physical examination in the hospital served as the control group (n=30). Echocardiography was performed in the CTO group 1 day before PCI, 1 month after surgery, and 3 months after surgery. The control group underwent echocardiography on the day of physical examination: conventional ultrasound measures the early diastolic mitral flow velocity (E) and diastolic mitral flow velocity (A) ratio (E/A), left ventricular end-diastolic volume (LVEDV), end-systolic volume (LVESV), left ventricular ejection fraction (LVEF), and early diastolic mitral Velocity of the annulus (e'); horizontal dynamic images of the left ventricular mitral valve, papillary muscle, and apex of the sternum, and four-chamber view, two-chamber view and three-chamber view of the apex, and 2D-STI technique The left ventricular stratified longitudinal strain parameters and the left ventricular global longitudinal, radial and circumferential strain parameters (GLS, GRS and GCS) were analyzed. Results Before operation, the E/e' value of the CTO group was significantly higher than that of the control group (P<0.05). Compared with the preoperative PCI and 1 month after operation, the E/e' value of the CTO group was significantly lower after 3 months (P<0.05). Compared with the control group, the total left ventricular total strain (GLS, GCS, GRS) was significantly lower in the CTO group, and the GLS was higher than that in the first month after PCI (P<0.05). GCS and GRS were higher than those before surgery (P<0.05). Compared with the control group, the longitudinal strain of the left ventricle in the CTO group was significantly decreased (P<0.05). The strain parameters of the left ventricle gradually increased 1 month after PCI and 3 months after PCI. The increase was more significant at 3 months (P<0.05). Conclusion The left ventricular systolic function of patients with CTO is lower than that of normal people. PCI can significantly improve ventricular systolic function in CTO patients. 2D-STI technique can effectively evaluate left ventricular strain after PCI in CTO patients.
Keywords：EchocardiographyCoronary occlusionSpeckle tracking imagingLeft ventricular function
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 1062-1065,1068 )