Ultrasonic study on the evaluation of regional right ventricular function by strain rate imaging after surgical repair of conotruncal defects
10.3760/cma.j.issn.1004-4477.2010.12.002
- VernacularTitle:超声应变率成像估测圆锥动脉干畸形术后右心室局部功能的研究
- Author:
Yuqi ZHANG
;
Xiaolei YI
;
Zhiqing YU
;
Zhifang ZHANG
;
Shuwen ZHONG
;
Lijun CHEN
;
Yurong WU
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Ventricular function,right;
Conotruncal defects;
Strain rate imaging
- From:
Chinese Journal of Ultrasonography
2010;19(12):1016-1019
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate regional right ventricular function by ultrasonic strain rate imaging in postoperative children with conotruncal defects(CTD). Methods All 27 postoperative CTD children had magnetic resonance imaging evaluation of right ventricular end-diastolic volume and end-systolic volume to calculate right ventricular ejection fraction (RVEF). The ultrasonic parameters of peak systolic strain rate (SRs), peak early diastolic strain rate (SRe), peak late diastolic strain rate(SRa) and strain (S) were obtained at the basal,middle and apical segment in curve of right ventricular anterior wall in 27 postoperative CTD children and 27 normal children. The correlation between SRs,S and RVEF were evaluated. Results Compared with healthy children,SRs,S,SRe,SRa were significantly reduced in postoperative CTD children (P ＜ 0.01 ), there were different distribution rules between postoperative CTD children and normal children,and all indexes had no statistical descrepancy among the basal, middle and apical segment ( P ＞0.05). SRs in basal segment of the right ventricular anterior wall correlated well with RVEF ( r = 0.89,P ＜ 0. 01 ). Conclusions Regional right ventricular function still was reduced in postoperative CTD children, and could be accurately evaluated by ultrasonic strain rate imaging.
