Evaluation of the function and synchronization of left atrial in chronic heart failure patients by two dimensional-speckle tracking imaging and real-time three-dimensional echocardiography
10.3760/cma.j.issn.1004-4477.2013.09.006
- VernacularTitle:二维斑点追踪显像和实时三维超声心动图对慢性心力衰竭患者左心房功能和同步性的研究
- Author:
Sheng CAO
;
Jinling CHEN
;
Ruiqiang GUO
;
Bo HU
;
Hongning SONG
;
Juan HE
- Publication Type:Journal Article
- Keywords:
Echocardiography,real-time three-dimensional;
Heart failure,congestive;
Atrial function,left;
Speckle tracking imaging
- From:
Chinese Journal of Ultrasonography
2013;22(9):753-757
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the function and synchronization of left atrial in patients with chronic heart failure(CHF) by two dimensional-speckle tracking imaging (2D-STI) and real-time threedimensional echocardiography(RT-3DE).Methods Thirty-two healthy controls and twenty-nine patients with CHF were studied.The mean strain and strain rate during systole,early and late of diastole(mSs,mSe and mSa,mSRs,mSRe and mSRa) were measured at each left atrial wall by 2D-STI.From the volume-time curve of RT-3DE workstation,the maximum volume (LAVmax),the minimum volume(LAVmin),the volume before contraction(LAVp) of left atrial were acquired.Accordingly,the total,passive and active ejection fraction could be calculated.The synchronization parameters derived from 2D-STI and RT-3DE were the dispersion of time to peak strain and time to the minimum volume (T-SD and Tmsv-16-SD).The index of volume and time were corrected by the body surface area and interval of R-R,respectively.The correlation were analysed betwee them.Results () Comparing between two groups,the mSs,mSe and mSa were shortened and the mSRs,mSRe and mSRa were slower in CHF group (P ＜ 0.05).② All the index of volume were gradually increasing from control to CHF group,but the LATEF,LAPEF and LAAEF were just the reverse,with all parameters had significant difference between two groups (P ＜0.05).③ The synchronization parameters were significantly higher from control to CHF group by the two kinds of skills (P ＜0.05).Comparing with 2D-STI,the indexes of synchronization were bigger and the asynchronization rate of CHF group were higher by RT-3DE.④The indexes of synchronization had a negative correlation with the strain rate and the ejection fraction,but had a positive correlation with the index of volume.Conclusions The function of left atrial are reduced in patients of CHF,there are asynchronization.2D-STI and RT 3DE may paly important roles in the evaluation of function and synchronization of left atrial.The relevance ratio of the left atrial asynchronization are higher from the RT-3DE than 2D-STI.
