Clinical Application of Advanced Echocardiography in Cardiac Mechanical Contraction Synchronization Test in Patients with Heart Failure
- VernacularTitle:超声新技术在慢性心衰心脏同步性检测中的临床应用
- Author:
Chengyan DING
;
Hailong DAI
;
Mingxian ZUO
;
Qiming GAI
;
Yunchuan DING
;
Qinghui WANG
;
Xuefeng GUANG
- Publication Type:Journal Article
- Keywords:
Advanced echocardiography;
Mechanical synchrony;
Heart failure
- From:
Journal of Kunming Medical University
2013;(12):44-48
- CountryChina
- Language:Chinese
-
Abstract:
Objective To test synchronization of cardiac mechanical contraction by means of advanced echocardiography and investigate the correlation of left ventricular ejection fraction (LVEF) and the indexes of mechanical dyssynchrony, and the relationship between DTI, STI and RT-3DE.Methods Control group (20 cases), chronic heart failure with a widened QRS complex (12 cases) and chronic heart failure with a shortened QRS duration (10 cases) were selected. We evaluated mechanical dyssynchrony with the DTI, the STI and the RT-3DE, and analyzed the correlation between the improvement degree of cardiac function and indexes of mechanical dyssynchrony, and the correlation between DTI, STI and RT-3DE. Results (1) In CHF groups (including shortened QRS group and widened QRS group), the indexes of synchronization of cardiac mechanical contraction were higher than control group ( <0.05) . (2) However, the indexes of mechanical dyssynchrony before operation showed no statistically significant difference between the widened QRS group and the shortened QRS group (>0.05) . (3) In CHF groups (including shortened QRS group and widened QRS group), the indexes of mechanical dyssynchrony before operation were higher more than after operation ( <0.05) . (4) In postoperation, the indexes of mechanical dyssynchrony showed no statistically significant difference between the widened QRS group and the shortened QRS group ( >0.05) . (5) There was a significant negative correlation between the LVEF and the indexes of mechanical dyssynchrony (<0.01) . (6) .In the indexes of synchronization of cardiac mechanical contractions, there are significant positive correlations between the DTI, the STI and the RT-3DE ( <0.01) . Conclusion Echocardiography can be used to screen CHF patients,and patients with left ventricular synchronous (including shortened QRS duration) can also be benefited from CRT.
