The Study On The Consistency Of Diagnosing Hypertensive Left Ventricular Hypertrophy Between Echocardiography And Electrocardiogram And Technology Of Speckle Tracking Imaging Evaluating Left Ventricular Function

ObjectiveTo observe the consistency of diagnosing hypertensive left ventricular hypertrophy(LVH),so as to explore the advantages of UCG and ECG in screening LVH and predicting cardiovascular disease.To investigate the value of two-dimensional speckle tracking imaging(2D-STI)in evaluating left ventricular function of hypertension patients with LVH and T wave change,to provide clinical doctors with effective diagnostic value and reduce the incidence and mortality of cardiovascular events.MethodsUsing prospectively analysis,74 hypertensive patients with LVH were collected by left ventricular mass index(LVMI)of UCG and/or Sv1+Rv5 value of ECG.Consistency and correlation analysis were performed between them.The systolic function of every cardiac segment were evaluated by 2D-STI.The difference were observed between T wave change group and T wave normal group.The correlation were analyzed among Sv1+Rv5 value?systolic function?diastolic function and STI strain.Results1.Compared with normal group,IVSd?LVPWd?LVMI?RWT?Rv5 and Sv1+Rv5 were higher in hypertension groups with significant difference(P<0.05);LVMI,Sv1,Rv5,Sv1+Rv5 were higher in T wave change group than that in T wave normal group with significant difference(P<0.05).2.LVEF?FS in T change group were higher than that in T wave normal group,but with no significant difference(P>0.05).3.Compared with normal group,E/A value were lower in hypertension group with significant difference(P<0.05),but there were no significant difference between T wave normal group and T wave change group(P>0.05).Ea/Aa value were lower in hypertension group than that in normal group with significant difference(P<0.05);E/Ea value in T wave change group were the highest among them with significant difference(P<0.05);Left atrial volume index(LAVI)in hypertension group were higher than that in normal group with significant difference(P<0.05).4.The variation of longitudinal strain(LS)peak shape in hypertension groups:they were disordered and negative peak curve and they reached the negative peak in systolic peak.LS and global longitudinal strain(GLS)of three groups in apical 4-chamber view?apical 2-chamber view?cardiac apex long axis view showed a decreasing trend,there were significant difference between hypertension groups and normal group(P<0.05),but were no significant difference between T wave normal group and T wave change group(P>0.05).5.The variation of circumferential strain(CS)peak shape in hypertension groups:they were disordered and negative peak curve which reached the negative peak in systolic peak.Compared with the normal group,global circumferential strain(GCS)and CS in short axis view of the mitral valve level?papillary muscle level and apex level were lower in hypertension groups,with significant difference(P<0.05).When compared with T wave normal group,CS value in apex level and GCS value were further reduced in T wave change group,both of which had significant difference(P<0.05).6.The variation of radial strain(RS)peak shape in hypertension groups:they were disordered and positive peak curve which reached the positive peak in systolic peak.Compared with the normal group,RS in every chamber?short axis view of the mitral valve level?papillary muscle level and apex level and global radial strain(GRS)of hypertension groups were lower with significant difference(P<0.05).But there were no significant difference between T wave change group and T wave normal group(P>0.05).7.The rate both UCG and ECG could diagnose LVH was about 24.32%,and the rate UCG could diagnose LVH but ECG could not was about 75.68%.LVMI was positively correlated with Sv1+Rvs value(-r=0.623,P<0.05).8.Sv1,+Rv5 value of ECG had a negative correlation with GLS?GCS and GRS(r=-0.264,-0.352,-0.202,both P<0.05).·Conclusion1.2D-STI can be early used to evaluate the global and regional systolic function of left ventricular in hypertension patients.2.Tissue Doppler imaging(TDI)and E/A value can reflect the diastolic function of left ventricular early and objectively.3.Compared with the T wave normal group,GCS in T wave change group was significantly lower.4.Using LVMI as the standard,in patients with hypertensive LVH diagnosed by UCG,a large part of them were failed to make a consistent diagnosis by ECG.LVMI of UCG and Sv1+Rv5 of ECG showed a moderate positive correlation.5.Sv1+Rv5 value of ECG has a low negative correlation with GLS?GCS and GRS.