Study on the change of left ventricle systolic function of the patients with coronary heart disease evaluated by 3-dimensional echocardiography before and after PCI

Objective To evaluate the feasibility of 3-dimensional echocardiography(3DE) in evaluating left ventricle systolic function of the patients with coronary heart disease who have regional wall motion abnormality(RWMA).Methods Before and after PCI,60 patients with coronary heart disease who had RWMA were examined by 3DE.The quantitive analysis for the 3DE images was performed by software,and global and 17 regional LV volume-time curves were drawn.Then,regional left ventricle end-diastolic volume(LVREDV),left ventricle regional end-systolic volume(LVRESV),left ventricle regional stroke volume(LVRSV) and left ventricle regional ejection fraction(LVREF) were detected and analyzed for both groups.Results The 2-Dimensional echocardiography (2DE) underestimated the values of EDV,ESV,however,which overestimated EF,as compared with the parameters got by 3DE.On one month after PCI operation,the values of REF,EF and RSV were increased,however,the values of REDV,RESV were decreased significantly(P 0.05),which indicated that the regional contractility and ejection of left ventricle were strengthened.The REF values after PCI were significantly higher than those of control group(P0.05).Conclusion (1)It is highly feasible and credible to quantitively evaluate the regional left ventricle myocardial contraction in patients with coronary artery disease complicated with regional wall motion abnormality by 3DE.(2) The regional left ventricle systolic function has heterogeneity before and after PCI.(3)The left ventricle regional systolic function of hypokinetic segments in patients with coronary heart disease after PCI is significantly increased.