Quantitative evaluation of left ventricular systolic dyssynchrony in patients with left ventricular apical ballooning syndrome by real-time three-dimensional echocardiography
10.3760/cma.j.issn.1004-4477.2013.06.008
- VernacularTitle:实时三维超声心动图定量评价左室心尖球形综合征患者左心室收缩不同步性
- Author:
Yujiao DENG
;
Daozi XIA
;
Yang LI
;
Xiaopeng WANG
;
Jianyuan XUAN
;
Mingliang SUN
;
Tiantong ZHU
- Publication Type:Journal Article
- Keywords:
Echocardiography,real-time three-dimensional;
Cardiomyopathies;
Ventricular function,left;
Left ventricular apical ballooning syndrome
- From:Chinese Journal of Ultrasonography
2013;(6):484-487
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the left ventricular systolic dyssynchrony in patients with left ventricular apical ballooning syndrome (LVABS) quantitatively by real-time three-dimensional echocardiography(RT-3DE) and its correlation with left ventricular ejection fraction(LVEF).Methods 7patients with LVABS were enrolled in this study.The images of left ventricle in full volume mode were obtained by RT-3DE in the different time (just after admission,4 weeks and 8 weeks).Post-processing software of 4D LV Volume Tom-Tec was used for calculation of EF and 16-segmental time-volume curves was obtained.The time to the point with minimal systolic volume(Tmsv) of each segment was calculated and by which the following indexes of systolic dyssynchrony were derived:Tmsv16-SD/Dif,Tmsv-basalSD/Dif,Tmsv-mid-SD/Dif and Tmsv-apical-SD/Dif.The correlation between systolic dyssynchrony index (SDI) and LVEF was analysed.Results ① The Tmsv16-SD/Dif,Tmsv-basal-SD/Dif,Tmsv-mid-SD/Dif and Tmsv apical-SD/Dif of left ventricle in the patients of 4 weeks and 8 weeks were smaller than those of the patients just after admission.There were significant differences among them(all P ＜0.05).②The more SDI increased,the more LVEF decreased,and vice versa.SDI was negatively associated with LVEF in the different time of admission (just after admission:r =-0.758; 4 weeks:r =-0.831 ; 8 weeks:r =-0.889;all P ＜0.05).Conclusions Left ventricular systolic dyssynchrony of severe degree is observed in patients with LVABS just after admission.But the condition of dyssynchrony has been improved gradually after 4 weeks and 8 weeks.SDI is negatively correlated with LVEF.
