Clinical and transthoracic echocardiographic manifestations of mitral annular disjunction
10.13929/j.issn.1003-3289.2025.06.015
- VernacularTitle:二尖瓣环分离的临床及经胸超声心动图表现
- Author:
Qiuying LIU
1
;
Min SONG
;
Jing DOU
;
Xiaohong WANG
;
Tiantian WANG
;
Qing BAI
Author Information
1. 中国人民解放军总医院第六医学中心超声科,北京 100048
- Publication Type:Journal Article
- Keywords:
mitral annular disjunction;
echocardiography
- From:
Chinese Journal of Medical Imaging Technology
2025;41(6):919-923
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the clinical and transthoracic echocardiographic manifestations of mitral annular disjunction(MAD).Methods Transthoracic echocardiographic data of 990 individuals were retrospectively analyzed.Based on the distance between the attachment point of posterior mitral valve and posterior wall of left ventricle measured on echocardiography,whether there was MAD was judged,and the subjects were divided into MAD group and non-MAD(NMAD)group,and clinical data and echocardiographic parameters were compared between groups.Taken parameters being significantly different between groups as independent variables and the presence or absence of MAD as dependent variable,multivariate binary logistic regression analysis was used to explore correlations of patients' clinical characteristics and transthoracic echocardiographic parameters of MAD.Results MAD was detected in 186 cases(186/990,18.79％).Patients' age,left atrial diameter(LAD),left ventricle diameter(LVD),late diastolic velocity of mitral valve(A)and early diastolic velocity of mitral valve orifices(E)/A in MAD group were all lower than those in NMAD group,while the proportion of moderate and above mitral regurgitation in MAD group was higher than that in NMAD group(all P＜0.05).Patients' age,A and E/A measured with transthoracic echocardiography were all correlated with MAD(all P＜0.05).Conclusion Clinical and transthoracic echocardiographic manifestations of MAD had certain characteristics.
