Comparative study on left ventricular systolic function in patients with coronary artery disease using M-mode,two-dimensional and real-time three-dimensional echocardiography

Objective:To explore the application value of quantitatively evaluating left ventricular systolic function(LVSF) in patients with coronary artery disease(CAD) using M-mode echocardiography(MME),two-dimensional echo-cardiography(2DE) and real-time three-dimensional echocardiography(RT-3DE).Methods:A total of 34 patients with CAD were examined by MME,2DE and RT-3DE separately.Left ventricle end diastolic volume(LVEDV),left ventricle end systolic volume(LVESV),stroke volume(SV) and ejection fraction(EF) were measured and compared within the three methods above.Results:The measurements of LVEDV,LVESV and SV with MME and 2DE were higher than RT-3DE,and EF was lower.There were statistically significant differences in above measurements between MME,2DE and RT-3DE(P0.05).But there were no statistically significant differences in above measurements between MME and 2DE(P0.05).Conclusion:RT-3DE can evaluate LVSF in patients with CAD accurately.The LVEDV,LVESV and SV are overestimated by MME and 2DE,and EF is underestimated by MME and 2DE.