Tei index in evaluation on left ventricular function in patients with left ventricular apical ballooning syndrome

Objective To evaluate left ventricular function in patients with left ventricular apical ballooning syndrome(LVABS) through Tei index obtained with quantitative tissue velocity imaging(QTVI).Methods Seven patients with LVABS(LVABS group) and 20 healthy controls(control group) were collected and underwent echocardiography 1-3 days after admission and at the end of the 4th and 8th week.Left ventricular Tei indexes and E peak/A peak(Ea/Aa) were obtained by QTVI.Ejection fraction(EF) of left ventricle was measured with double plane Simpson method.Results In LVABS group,Tei indexes decreased gradually.Compared with the control group,those indexes were statistically different(all P0.05);EF increased gradually at the 4th and 8th week,and compared with admission,those indexes were statistically different(all P0.05),and the average Tei index appeared negative correlation with EF(r=-0.913,-0.932,-0.946,all P0.05);Ea/Aa increased gradually at the end of 4th and 8th week(all P0.05),and the average Tei index appeared negative correlation with Ea/Aa(r=-0.779,-0.821,-0.853,all P0.05).Conclusion Tei indexes obtained with QTVI are valuable for evaluation on the left ventricular function in patients with LVABS.Tei indexes of left ventricular anterior wall and lateral wall are more sensitive.