Correlation among segmental dyssynchrony, regional ejection fraction and global ejection fraction of left ventricle in patients with dilated cardiomyopathy by real-time three-dimensional echocardiography
10.3760/cma.j.issn.1004-4477.2009.04.006
- VernacularTitle:实时三维超声心动图评价扩张型心肌病患者左心室心肌不同步及其与收缩功能的相关性
- Author:
Yuming MU
;
Lu CHEN
;
Qi TANG
;
Xinkui JIANG
- Publication Type:Journal Article
- Keywords:
Echocardiography,real-time three-dimensional;
Cardiomyopathy,dilated;
Ventricular function,left
- From:
Chinese Journal of Ultrasonography
2009;18(4):288-290
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the relationship among segmental dyssynchrony indexes, reginal ejection frction(EF) and global EF of left ventricle(LV) in the patients with dilated cardiomyopathy. Methods Standard deviation(SD) and maximal difference (Dif) in the time to minimal systolic volume in user-selected LV segments (Tmsv SeI-SD, Tmsv SeI-DIF) of LV global EF (LV-EF), reginal ejection fraction (REF) were acquired by real-time three-dimensional echocardiography in 27 controls and 24 DCM dyssynehrony patients. Data were grouped separately for 3 levels of the basal, mid and apical segments. Results The values of Tmsv SeI-SD and Tmsv SeI-DIF were linearly negatively correlated with REF in mid segment of DCM (r =-0.6921,-0.6384, P<0.01). It existed exclusive linear regression between Tmsv Sel-SD,Tmsv SeI-DIF and LV-EF only in mid segment's dyssynchrony indexes among three segments(β= -0.7836, -0.7801, P<0.01). Each REF in three segments was linear regression relationship with LV-EF(β= 0.2234,0.7506,0.1880, P <0.05) especially in mid segment. Conclusions The Tmsv SeI-SD, Tmsv SeI-DIF and REF of mid segment are important factors to influence left ventricular function in the patients with dilated cardiomyopathy.
