title: Assessment of myocardial perfusion and systolic function in patients with coronary artery disease after coronary artery bypass surgery by myocardial contrast echocardiography and two-dimensional strain echocardiography.
abstract: The clinically applied value of myocardial perfusion and systolic function in patients with coronary artery disease after coronary artery bypass surgery using real-time myocardial contrast echocardiography (RT-MCE) combined with two-dimensional strain echocardiography was assessed. Twenty patients underwent intravenous RT-MCE by intravenous injections of SonoVue before and after coronary artery bypass surgery. Two-dimensional images were recorded from the left ventricular four-chamber view, two-chamber view and the apical view before, and two weeks and three months after coronary artery bypass surgery, and the peak systolic longitudinal strain was measured. The results showed that myocardial perfusion was significantly increased after coronary artery bypass surgery in about 71.6% segments. In the group that myocardial perfusion was improved, the peak systolic longitudinal strain three months after bypass surgery was significantly higher than that before operation [(-15.78+/-5.91)% vs (-10.45+/-8.31)%, P<0.05]. However, the parameters did not change in the group without myocardial perfusion improvement [(-10.33+/-6.53)% vs (-9.41+/-6.09)%, P>0.05]. It was concluded that whether or not the improvement of myocardial perfusion can mirror the recovery trend of regional systolic function, two-dimensional strain echocardiography can observe dynamic change of regional systolic function. The combination of myocardial perfusion with two-dimensional strain echocardiography can more accurately assess the curative effectiveness of coronary artery bypass surgery.
authors.affiliation: Department of Medical Ultrasound, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China. stream0917@yahoo.cn
authors.forename: Rong
authors.initials: R
authors.lastname: Liu
authors.forename: Youbin
authors.initials: Y
authors.lastname: Deng
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Bi
authors.forename: Yani
authors.initials: Y
authors.lastname: Liu
authors.forename: Li
authors.initials: L
authors.lastname: Xiong
authors.forename: Liuping
authors.initials: L
authors.lastname: Chen
mesh_terms: D000368:Aged; D003287:Contrast Media / Q000008:administration & dosage; D001026:Coronary Artery Bypass / Q000379:methods; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000601:surgery*; D003326:Coronary Circulation / Q000502:physiology; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009204:Myocardial Revascularization; D020127:Recovery of Function; D013599:Systole / Q000502:physiology; D016277:Ventricular Function, Left / Q000502:physiology
chemical_list: D003287:Contrast Media