Assessment of left ventricular function in patients with mitral valve replacement by quantitative tissue velocity imaging
10.3760/cma.j.issn.1004-4477.2011.06.002
- VernacularTitle:定量组织速度成像评价二尖瓣置换术后左心功能的临床研究
- Author:
Guixia ZHENG
;
Hongli HAN
;
Yiling JIA
;
Yanbin XIA
;
Song WU
;
Jiawei TIAN
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Heart valve prosthesis implantation;
Ventricular function,left;
Quantitative tissue velocity imaging
- From:
Chinese Journal of Ultrasonography
2011;20(6):466-470
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the clinical value of quantitative tissue velocity imaging (QTVI) in assessing left ventricular(LV) global and regional myocardial function in patients with mitral valve replacement(MVR).Methods Eighty patients having their implantations for more than six months were examined by echocardiography.QTVI-derived parameters such as peak systolic velocity(Sa,Sm) and early diastolic velocity(Ea,Em) of mitral annulus and LV wall were measured from the apical four-chamber,two-chamber and long axis corresponding myocardial segments in MVR groups decreased and LV ejection fraction but negative correlation between Ea' and isovolumic relaxation time(IVRT') in patients(P<0.01).Conclusions QTVI plays an important role in determining LV function of patients after MVR accurately.
