Study on characteristics and regularity of left ventricular thrombus in color Doppler echocardiography

SHEN Nan; GAO Jian; HOU Chuangju

Abstract：Objective To probe into the features and patterns of color Doppler echocardio-graphy( CDE) of elderly with left ventricular thrombus ( LVT) .Methods We adopted CDE to examine 30 LVT cases to discover the features and patterns of LVT.Results All the 30 LVT cases and all the accompanied malformations are correctly diagnosed according to the CDE fea -tures.The features and patterns of CDE are evident:1) M-mode echocardiography shows that the inner diameters of the left atri -um and the left ventricle are larger in varying degrees .In zone 1, the motion range of ventricular septum and left ventricular poste-rior wall is decreased , while in zone 2, the motion range of ventricular septum and left ventricular posterior wall is relatively in -creased;2) The two-dimensional echocardiography shows that the myocardium from bottom of LVT to the ventricular apex becomes thin and bulges outward , in paradoxical movement;an echo shadow in different sizes can be seen near the ventricular apex of the left ventricle, out of which the smallest is 0.8 cm ×1.0 cm and the largest 1.8 cm ×2.2 cm.The echo shadow is closely related to the left ventricular wall and does not oscillate with the cardiac cycle;3 ) Color Doppler flow image shows mitral regurgitation flow signal during systole;4) All the left ventricular ejection fractions decrease to some extent estimated by Simpson ' s rule.After clinical treatments, the LVTs gradually increase according to CDE follow-up examination;5) All the of elderly with LVTs are soli-tary and adjacent to left ventricular aneurysm , after clinical treatment , the echo shadows gradually shrink according to CDE follow-up examination;6) and Males of elderly with LVT patients are significantly more than female patients .Conclusion The CDE of elderly with LVT shows evident features and patterns and it has specific diagnostic value for LVT .