Isovolumic Contraction Parameters of Tissue Doppler Imaging in Evaluation of Segmental
High-Echo Endocardium of Coronary Artery Disease with Myocardial Ischemia
MA Xiuli, LIU Shuli
Department of Electric Diagnosis, The Fourth People’s Hospital of Shenyang, Shenyang Liaoning 110031, China
Abstract:Objective To assess the segment myocardial function under the endocardium of high echo-intensity by using pulse
wave tissue Doppler imaging (PW-TDI) derived indices, and to evaluate the relationship between these parameters and myocardial
ischemia. Methods A total of 27 patients with high echo-intensity endocardium on inferior, 18 patients with high echo-intensity
endocardium on posterior septum, and 20 normal controls detected by using TW-TDI technique were enrolled in this study.
Conventional two-dimensional (2D) parameters of left heart and TDI derived systolic velocities of mitral annulus, including peak
systolic velocity during ejection period (Sa), early diastolic peak velocity (Ea), late diastolic peak velocity (Aa), peak myocardial
velocity during isovolumic contraction (IVV), and isovolumic myocardial acceleration (IVA) were measured and statistically
analyzed. Results Conventional 2D parameters of left heart had no statistical difference among 3 groups. The pulse tissue doppler
parameters (Aa was increased, Ea and IVA were decreased) which could reflect the function of left ventricular were significanthy
changed compared to that of control group. There was no significant difference of Sa and IVV among 3 groups. Conclusion
Isovolumic contraction parameters of PW-TDI can be used to evaluate the myocardiol ischemia in patients with high echo-intensity
endocardium early and noninvasively and can indicat myocardial ischemia.
马秀丽,刘书丽. TDI等容收缩期参数评价冠心病节段性心内膜回声增强与心肌缺血关系[J]. 中国医疗设备, 2017, 32(12): 76-79.
MA Xiuli, LIU Shuli. Isovolumic Contraction Parameters of Tissue Doppler Imaging in Evaluation of Segmental
High-Echo Endocardium of Coronary Artery Disease with Myocardial Ischemia. China Medical Devices, 2017, 32(12): 76-79.