Research on left ventricular twist in left-to-right shunt congenital heart diseases by speckle tracking imaging
10.3760/cma.j.issn.1004-4477.2013.04.004
- VernacularTitle:斑点追踪技术对左向右分流先天性心脏病患者左心室扭转运动的研究
- Author:
Dan JIN
;
Chunlei LI
;
Jie SUN
;
Chenyang WANG
;
Youbin DENG
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Heart septal defects,ventricular;
Ductus arteriosus,patent;
Ventricular function,left;
Speckle tracking imaging
- From:
Chinese Journal of Ultrasonography
2013;(4):292-295
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the value of left ventricular (LV) twist and rotation in left-to-right shunt congenital heart diseases(CHD) by two-dimensional speckle tracking imaging(2D-STI).Methods 16 patent ductus arteriosus(PDA),20 ventricular septal defect(VSD) and 36 age,sex matched normal subjects were included.LV end-diastolic volume (LVEDV) and LV end-systolic volume (LVESV) were measured by Biplane Simpson method,then LV ejection fraction (LVEF) was calculated.Two-dimensional images in LV basal and apical short-axis views in three complete cardiac cycles were required.Using speckle tracking imaging,the rotation of 6 segments in basal and apical short-axis levels were measured in CHD patients and control subjects,respectively.Basal and apical rotation versus time profiles and LV twist versus time profiles were drawn.Correlation analysis of LVEDV,LVESV and LV peak twist and rotation were made respectively.Results Compared to the control group,LV peak twist and the apical rotation were increased in CDH patients,which was statistically significant (P ＜0.05).LV peak twist had significant correlation with LVEDV and LVESV.Conclusions LV volume overload which was caused by left-to-right shunt CHD significantly impacted LV twist and apical rotation,but has no significant effect in basal rotation.LV peak twist correlated with LVEDV and LVESV.
