Assessment of left ventricular motion asynchrony in patients with chronic heart failure by ultrasound two dimensional speckle-tracking imaging
10.3760/cma.j.issn.1004-4477.2009.01.002
- VernacularTitle:超声二维斑点追踪显像技术评价慢性心力衰竭患者左心室运动同步性的初步临床研究
- Author:
Junhong HUANG
;
Mingxing XIE
;
Xinfang WANG
;
Qing Lü
;
Jing WANG
;
Lin HE
;
Ming CHEN
;
Li ZHANG
;
Wei HAN
;
Lijun HU
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Heart failure,congestive;
Ventricular function,left;
Two dimensional speckle-tracking imaging
- From:Chinese Journal of Ultrasonography
2009;18(1):4-7
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the motion asynchrony of left ventricle(L V)wall in patients with chronic heart failure(CHF)by ultrasound two dimensional speckle-tracking imaging(2D-STI).Methods Thirty-seventy patients with CHF were divided into two groups:CHF1 group,22 with QRS≤120 ms;CHF2 group,15 with QRS ＞120 ms.Thirty healthy subjects(control group)were enrolled.2D-STI was applied to display and analyze the strain rate imaging on the three standard LV apical views and parasternal LV short-aix views,respectively.The time from the onset of QRS complexes to peak strain rate during systole(Tsrs)and early-diastole(Tsre)were measured from the longitudinal,radial and circumferential vector respectively(Tsrsl,Tsrel,Tsrsr.Tsrer,Tsrsc,Tsrec).The standard deviation of all above parameters(Tsrsl-SD.Tsrel-SD,Tsrsr SD,Tsrer-SD,Tsrsc-SI).Tsrec-SD)and the maximal temporal difference(Tsrsl-diff.Tsrel-diff,Tsrsr-diff,Tsrer-diff,Tsrsc-diff,Tsrec-diff)of 18 segments were calculated as indicator of dyssynchrony.Results The systolic dyssynehrony indices Tsrsl-SD,Tsrsl-diff,Tsrsr-SD,Tsrsr-diff,Tsrsc-SD Tsrsc-diff and diastolic dyssynchrony indices Tsrel-SD,Tsrel-diff,Tsrer-SD,Tsrer-diff,Tsrec-SD,Tsrec-diff were significantly higher in the CHF1 and CHF2 group than those in the control group(all P＜0.05).Compared with the values in the CHF1 group,the systolic indices of dyssynchrony and the radial and circumferential diastolic indicator of dyssynchrony in CHF2 group were longer(P＜0.05).Conclusions The longitudinal,radial and circumferential systolic and diastolic dyssynchrony of the LV were commonly existed in patients with CHF,regardless of QRS duration.2D-STI is a potientially useful tool to evaluate the systolic and diastolic synchrony of the LV wall motion in patients with CHF.
