Assessment of left atrial strain in patients pre-and post-mitral valvuloplasty by using two-dimensional speckle tracking echocardiography
10.3760/cma.j.issn.1004-4477.2013.06.001
- VernacularTitle:二维斑点追踪技术对二尖瓣成形术前后左心房应变的研究
- Author:
Hang SU
;
Bowen ZHAO
;
Hailin TANG
;
Li XIONG
;
Xiaohui PENG
;
Bei WANG
;
Chan YU
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Mitral valvuloplasty;
Atrial function,left;
Speckle tracking imaging
- From:Chinese Journal of Ultrasonography
2013;(6):461-465
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the change of left atrial function after mitral valvuloplasty in patients with mitral valve prolapse by measuring left atrial strain using two-dimensional speckle tracking echocardiography(2D-STE).Methods Study population consisted of 25 patients with mitral valve prolapse and 25 healthy subjects.High frame rate two-dimensional images were recorded from the apical four chamber view and two chamber view.Images of patients with mitral valve prolapse were respectively recorded at pre-operation,3 days and 3 months post-operation.Left atrial longitudinal strain was measured in two views using two-dimensional strain soft ware.Results ①Compared with the control group,global peak atrial longitudinal strain (PALS),peak atrial contraction strain (PACS) and atrial longitudinal strain during early diastole(ALSED) decreased (P ＜0.01) in patients with mitral valve prolapse,but global timeto-peak of peak atrial longitudinal strain(TPLS) increased(P ＜0.01).Regurgitant jet area/left atrium area (RJA/LAA) in patients with mitral valve prolapse correlated negatively with global PALS(r =-0.620,P ＜ 0.01).② Compared with preoperative group,global PALS,PACS,ALSED and TPLS decreased significantly at 3 days after surgery(P ＜0.01).Global PALS,ALSED(P ＜0.01) and PACS(P ＜0.05)increased at 3 months after surgery,but global TPLS did not differ significantly.Conclusions 2D-STE could accurately evaluate the change of left atrial function after mitral valvuloplasty.
