Echocardiographic and methodological study on left atrial spontaneous echo contrast in patients with atrial fibrillation
- VernacularTitle:心房颤动患者左心房自发超声显影的超声学和方法学研究
- Author:
Yansheng PI
;
Wei ZHANG
;
Yun ZHANG
;
Ming ZHONG
;
Li LI
;
Zhiming GE
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Atrial fibrillation;
Spontaneous echo contrast;
Collinearing analysis
- From:
Chinese Journal of Ultrasonography
2003;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the independent echocardiographic pathogenesis associated with left atrial spontaneous echo contrast(SEC) formation in patients with atrial fibrillation(AF).Methods Twenty-one patients with valvular AF and twenty-three patients with nonvalvular AF undergoing transthoracic and transesophageal echocardiography(TTE/TEE) were studied.Morphological and functional parameters of the heart in patients with AF were detected by TTE,while the sizes of the left atrial appendage(LAA),its Doppler flow patterns,Doppler flow patterns of the left upper pulmonary vein and integrated backscatter(IBS) values of left atrial SEC relative to those of the left ventricle were measured by TEE.Results There were the following 10 variables significantly associated with the left atrial SEC,some of which associated positively with SEC were left atrial diameter(r=(0.40252),P=(0.0061)),diameter of the open mouth of LAA to the left atrium(r=(0.37816),P=(0.0161)),while the others of which associated negatively with SEC were antegrade/retrograde blood flow velocity peak,integrate(RVi) and retrograde blood flow velocity mean(RVm) values,and S/D wave peak,S wave integrate(Is) and D wave mean(Md) values,their r values ranged from(-0.40379) to(-0.32832),their P values between(0.0018) and(0.0386).Collinearity analyses suggested that RVi,RVm,Is,Md represented completely all the blood flow velocity parameters of LAA and the left upper pulmonary vein,respectively.Multivariate analyses demonstrated that RVm and Md were the independent predictors of the left atrial SEC in patients with AF(both P
