Preliminary study of the relationship between the ischemic mitral regurgitation mechanism and geometric structure of the mitral valve in the papillary muscle dysfunction
10.3760/cma.j.issn.1004-4477.2014.11.002
- VernacularTitle:二尖瓣几何结构与缺血性二尖瓣反流机制的超声影像学研究
- Author:
Xiaofang ZHONG
;
Jing WANG
;
Maolong SU
;
Xiaoyang HUANG
- Publication Type:Journal Article
- Keywords:
Echocardiography,transesophageal;
Mitral valve insufficiency;
Papillary muscle dysfunction;
Geometric angles
- From:
Chinese Journal of Ultrasonography
2014;(11):925-929
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the relationship between ischemic mitral regurgitation and geometric angles of the mitral valve leaflets in patients with coronary artery disease and papillary muscle dysfunction by transesophageal echocardiography(TEE) ,and to evaluate anatomy and pathophysiology mechanicm of the ischemic mitral regurgitation with left ventricular papillary muscle dysfunction .Methods A total of 84 subjects were enrolled in this study .All of the subjects were divided into group A (healthy volunteers constituted the control group ,n =40) ,group B (chronic inferior or posterior myocardial infarction patients with papillary muscle dysfunction group ,n =44) ,group C(patients from group B after mitral valvuloplasty surgery ,n = 20) .The relationship between mitral regurgitation and geometric angles of the mitral valve leaflets and mitral annulus were studied by TEE .Results Geometric angle between the mitral valve leaflets and mitral annulus were significantly larger in group B ,and geometric angles of the mitral valve leaflets and mitral annulus was positive correlated with degree of mitral regurgitation .Degree of mitral regurgitation significantly reduced in group C ,no significant difference was found at the geometric angles of the mitral valve leaflets and mitral valve annular compared with group A .Conclusions The degree of mitral regurgitation were highly correlated with geometric angles of the mitral valve leaflets and mitral valve annular in patients with left ventricular papillary muscle dysfunction caused by coronary heart disease .Repair of the mitral valve leaflets surgery can significantly reduce geometric angles of the mitral valve leaflets and mitral valve annular ,and reduce the degree of mitral regurgitation significantly .
