Application of three-dimensional speckle tracking imaging evaluating left ventricular systolic function in patients with congenital heart disease

Objective To investigate left ventricular systolic function in patients with congenital heart disease with threedimensional speckle tracking imaging(3D-STI).Methods 52 cases of congenital heart disease were selected in the study and 52 normal subjects were selected as control groups.Anteroposterior diameter of the left atrium,left ventricular end-diastolic,and end-diastolic diameter pulmonary artery were measured in echocardiography.Left ventricular end-diastolic volume(LVEDV),left ventricular end-systolic volume(LVESV),left ventricular ejection fraction(LVEF),left ventricular overall systolic peak longitudinal strain(LVGLS),global left ventricular systolic peak circumferential strain(LVGCS) and left ventricular peak systolic radial strain overall(LVGRS) were measuresd in all subjects by 3D-STI and compared between groups.Results Compared with control group,left ventricular and left atrial diameter increased,the pulmonary artery widened in VSD and PDA groups(P 0.05).Left ventricular and left atrial diameter decreased,the pulmonary artery widened in ASD group(P 0.05).Meanwhile,VSD group and PDA group ventricular volume and cardiac ejection fraction were significantly higher(P 0.05),while the ASD group was lower than that of the control group.In addition,LVGLS,LVGRS,LVGCS in all CHD groups were significantly increased than the control group(P 0.05).Conclusion3D-STI was convenient and non-invasive.Compared with the previous ultrasound,it can more accurately assess the movement of the heart in three-dimensional space.3D-STI can objectively evaluate changes in cardiac function in patients with CHD.