Assessment of left ventricular myocardiac mechanics after transcatheter aortic valve implantation by speckle tracking imaging
10.3760/cma.j.issn.1004-4477.2017.04.001
- VernacularTitle:斑点追踪显像技术评价经导管主动脉瓣植入术患者左室心肌力学变化
- Author:
Xiaoguo CHEN
;
Xianhong SHU
;
Cuizhen PAN
;
Weipeng ZHAO
;
Dehong KONG
;
Daxin ZHOU
;
Wenzhi PAN
;
Hong LUO
;
Junbo GE
- Keywords:
Echocardiography;
Aortic valve stenosis;
Heart valve prosthesis implantation;
Ventricular function,left;
Speckle tracking imaging
- From:
Chinese Journal of Ultrasonography
2017;26(4):277-281
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the left ventricle systolic function in patients with aortic stenosis (AS) underwent transcatheter aortic valve implantation(TAVI) by speckle tracking imaging and to observe the indicators in bicuspid aortic valves(BAV) and tricuspid aortic valves(TAV) groups.Methods Twenty nine patients with AS were enrolled,all of them underwent TAVI successfully.The regular echocardiography and 3D full-volume images were acquired on before and 3 days,1 month after TAVI.Longitudinal strain,circumferential strain,and three-dimensional left ventricle ejection fraction(3D-LVEF) were analyzed using Qlab software.Results Compared with the baseline,aortic valve blood flow velocity (AV),maximum aortic valve pressure gradient (AVPG-max),mean aortic valve pressure gradient (AVPG-mean),aortic valve area(AVA) after TAVI were improved significantly.Global longitudinal strain(GLS) had a improvement on 3 days after TAVI(all P ＜0.001),and further increased during 1 month after TAVI (all P ＜0.001).Global circumferential strain(GCS) were increased during 1 month after TAVI(all P ＜ 0.001).The 3D-LVEF after 1 month were improved significantly(all P ＜0.001).The BAV patients and TAV patients had similar changes in all of indicators observed.Conclusions The left ventricle systolic function has early improvement after TAVI,and further recovery during follow-up.The BAV patients can obtain a benefit from TAVI equally to the TAV patients.
