Characterization of tissue velocity imaging in patients with heart failure
- VernacularTitle:心力衰竭患者的组织速度图特征
- Author:
Xin WANG
;
Tiangang ZHU
;
Xin QUAN
;
Yuqing QI
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Heart failure,congestive;
Tissue velocity imaging
- From:
Chinese Journal of Ultrasonography
2003;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To quantitatively assess the regional myocardial function in the patients with heart failure by tissue Doppler imaging. Methods The apical 4 chamber, 2 chamber and long axis view of two-dimensional tissue Doppler imaging were acquired in 30 healthy individuals and 18 patients with heart failure by GE Vivid 7 commercially machine.The basal and middle segments in left and right ventricle were analyzed in tissue velocity imaging model. The following cardiac intervals and velocities were measured in each segment, including the isovolumetric contraction time(IVCT), the ejection time, the isovolumetric relaxation time(IVRT); the rapid filling time, the artrial systolic time, the peak velocity and acceleration of Sm, the peak velocity and acceleration of Em, and the peak velocity and acceleration of Am. Results Compared with control group, IVCT, IVRT and atrial contraction time were prolonged, the ejection time and rapid filling time were shorterned, peak velocity and acceleration of Sm, Em, and Am were reduced in heart failure group. Conclusions There were characteristic changes on tissue velocity imaging in the patients with heart failure which include the delay of IVCT and IVRT and reduction of velocity in Sm, Em, and Am.
