The impact of different infarction sites on left ventricular systolic vortex-a pilot study
10.3760/cma.j.issn.1004-4477.2012.04.003
- VernacularTitle:不同部位心肌梗死对左心室收缩期涡流影响的初步研究
- Author:
Li ZHOU
;
Lisha NA
;
Liwen LIU
;
Bin MA
;
Rui LIU
;
Jianying GUO
;
Jun ZHANG
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Myocardial infarction;
Ventricular function,left;
Vortex;
Vector flow map
- From:
Chinese Journal of Ultrasonography
2012;21(4):284-287
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the impact of anterior and inferior-posterior regional wall motion abnormalities on the vortex in systolic phase by vector flow map(VFM) technique.Methods Sixty patients with myocardial infarction were divided into 2 groups:the left anterior descending artery single branch lesion group (LAD group) and the left circumflex artery and/or right coronary artery lesion group (LCX/RCA group).By VFM technique,left ventricular systolic blood flow field was observed.Parameters such as the vortex duration were calculated and compared between two patient groups and also with healthy control group.Results LAD group did not show significant difference from the control group in isovolumic systolic vortex,this group was characterized with large size of vortex and usually forming local vortex at the apex in early ejection.On the contrary,LCX/RCA group had small isovolumic systolic vortex,the early ejection vortex of this group was significantly smaller than that of LAD group and larger than that of control group.The phenomenon was usually observed in the center of the lumen.Both LAD and LCX/RCA group had longer total vortex duration and vortex collapse time than the healthy control group,these differences were not significant between LAD and LCX/RCA group.There were no significant differences in isovolumic vortex duration among the three groups.Conclusions Anterior wall infarction had more impact on systolic blood flow field than inferior-posterior wall infarction.The VFM technique could be applied for observation and evaluation of the changes in vortex characteristics.
