Study of left ventricular long axis systolic function in patients with dilated cardiomyopathy by the peak time of mitral annular displacement
10.3760/cma.j.issn.1004-4477.2010.06.006
- VernacularTitle:二尖瓣环收缩期最大位移达峰时间评价扩张型心肌病患者左心室长轴收缩功能的超声心动图研究
- Author:
Yuming MU
;
Shengjun TA
;
Lina GUAN
;
Chunmei WANG
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Cardiomyopathy,dilated;
Ventricular function,left
- From:Chinese Journal of Ultrasonography
2010;19(6):475-479
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the value of peak time(PT) and corrected peak time(PTc) in the assessment of left ventricular long axis systolic function in patients with dilated cardiomyopathy(DCM).Methods Thirty-one DCM cases and thirty-six healthy cases were investigated using echocardiography.To obtain image of apical four-chamber view and apical two-chamber view, PT was measured by the technique of tissue motion annular displacement.The value of PTc was corrected by R-R interval.The critical value of PT and PTc was obtained by ROC curves.Results Compared with the PT of control group, the PT of DCM group at the site of septal and lateral were significantly increased ( P ＜0.05), but the PT at the site of anterior and inferior were no significantly increased ( P ＞0.05).The PTc at the four sites were significantly increased compared with control group ( P ＜0.05).The areas of under the ROC curve of PTc was 0.849 (95 % CI 0.699～0.929, P = 0.000), sensitivity and specificity of diagnosis cardiac dysfunction were 80.6 % and 66.7% respectively.Conclusions The PTc was significantly increased in patients with DCM.PTc was useful to evaluate left ventricular dysfunction in DCM patients.
