Assessment of left ventricular global and regional systolic function after transcatheter aortic valve implantation by three-dimensional speckle tracking imaging
10.3760/cma.j.issn.1004-4477.2014.10.001
- VernacularTitle:三维斑点追踪技术评价经导管主动脉瓣植入术患者左心室整体及局部收缩功能
- Author:
Liping CHEN
;
Xin WEI
;
Yuan FENG
;
Mao CHEN
;
Hong TANG
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Aortic valve stenosis;
Heart valve prosthesis implantation;
Ventricular function,left;
Three-dimensional speckle tracking imaging
- From:
Chinese Journal of Ultrasonography
2014;23(10):829-834
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the alternation of left ventricular systolic function in patients underwent transcatheter aortic valve implantation operation(TAVI) by three-dimensional speckle tracking technology (3D-STI).Methods Totally 20 patients with severe aortic stenosis were enrolled.All the subjects underwent successful TAVI operation.The real-time 3D full volume datasets on apical four-chamber view were acquired on before,7 days and 1 month after TAVI.Left ventricular global longitudinal strain(GLS),regional peak systolic longitudinal strain(LS),regional peak systolic circumferential strain(CS) and regional peak systolic radial strain(RS),were analysed using off-line TomTec software,the differences among the three groups were compared.Results Compared with the preoperation,aortic valve blood flow velocity (AV),mean aortic valve pressure gradient(mPAG) of 7 days after operation decreased significantly.Threedimensional left ventricular ejecation fraction(3D-LVEF) among the patients whose 3D-LVEF under 50％had a remarkable increase and whose 3D-LVEF exceed 50％ before operation had no significant change,while 1 month after operation the 3D-LVEF had a significant improvement compared with the preoperational data regardless of 3D-LVEF under 50％ or not.The GLS and LS of all segments of 7 days after TAVI were higher than pre-operation(all P ＜0.05),and it had a further improvement 1 month after TAVI.Conclusions LV systolic function had improvement early after TAVI.3D-STI is a new,convenient way to detect the global and regional left ventricular systolic function of TAVI patients.
