Evaluation of Left Ventricular Systolic Function in Patients with Dilated Cardiomyopathy by Real-time Three-dimensional Echocardiography

Objective To evaluate the systolic function of the left ventricle in patients with dilated cardiomyopathy(DCM) by using real-time three-dimensional echocardiography.Methods The end-diastolic volume(EDV),left ventricular internal dimension at end-diastole(LVIDd),spherical index(SpI),end-diastolic mass(EDMass) and ejection fraction of left ventricle(LVEF) of patients with DCM and healthy volunteers was analyzed via three-dimensional echocardiography respectively.And the difference in the indexes above was compared between the two groups.The correlation between parameters above and left ventricular ejection fraction was analyzed as well.Results When compared with the healthy subjects,EDV,LVIDd and SpI of left ventricle was significantly higher in the patients with DCM,while EDMass and LVEF was significantly lower(P0.01 for all).EDV,LVIDd and SpI of left ventricle was negatively correlated with LVEF(r=-0.879,P0.01;r=-0.908,P0.01;r=-0.708,P0.01).But EDMass of left ventricle had a weak correlation with LVEF(r=0.348,P0.05).Conclusion Real-time three-dimensional echocardiography can provide a noninvasive,accurate,repeated detection mean for the diagnosis of DCM and prognosis judgment of patients.