Effect of left bundle branch block on left ventricular function in dilated cardiomyopathy
- VernacularTitle:左束支传导阻滞对扩张型心肌病左心功能的影响
- Author:
Xianmin ZENG
;
Ke WANG
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Cardiomyopathy,congestive;
Bundle-branch block;
Ventricular function,left
- From:
Chinese Journal of Ultrasonography
2003;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the effects of intraventricular conduction abnormality on left ventricular function in dilated cardiomyopathy. Methods The study composed of 3 groups,16 patients of dilated cardiomyopathy (DCM) without wide QRS complexes, 16 patients of DCM with complete left bundle branch block(CLBBB),and 16 age-matched healthy individuals,all showing sinus rhythm and being complicated with mitral regurgitation. Pre-ejection contraction time(PET), left ventricular ejection time(LVET), left ventricular filling time(LVFT), myocardial performance index(MPI), mitral regurgitation time(MRT), stroke volume(SV) were recorded with pulsed or continuous-wave Doppler. Pulse tissue Doppler imagining(TDI) was performed to measure the time dispersity of electromechanical motion of left ventricular in systole and diastole on the atrial-ventricular annulus with mapping techniques. Results Time dispersity of electromechanical motion of adjacent left ventricular segments in systole[((77.9)?(13.6))ms vs ((52.1)?(13.2))ms vs ((28.3)?(7.2))ms, P
