The relationship between myocardial perfusion and left ventricular longitudinal systolic function in patients with coronary slow flow
10.3760/cma.j.issn.1004-4477.2017.08.004
- VernacularTitle:冠状动脉慢血流患者心肌微循环与左心室纵向收缩功能的相关性研究
- Author:
Hebin ZHANG
1
;
Zhelan ZHENG
;
Feng GAO
;
Guoqing HUANG
;
Mingwei WANG
;
Shanxin LIU
Author Information
1. 310015,杭州师范大学附属医院超声科
- Keywords:
Echocardiography;
Microbubbles;
Dobutamine;
Coronary disease;
Ventricular function,left;
Speckle tracking imaging
- From:
Chinese Journal of Ultrasonography
2017;26(8):661-666
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate whether myocardial perfusion impairment and left ventricular (LV) longituadinal systolic dysfunction had happened in patients with coronary slow flow(CSF),and to assess the relationship between them by myocardial contrast echocardiography(MCE) and speckle tracking imaging(STI).Methods A total of 55 patients underwent coronary angiography for angina were enrolled,of those 35 with coronary slow flow phenomenon as CSF group,20 patients with normal coronary angiography as control group.STI and MCE were performed from the apical 4-,3 and 2 chamber views at baseline and after low-dose dobutamine stress echocardiography (LDDSE) in CSF group and control group.STI derived LV global longitudinal strain(GLS) and GLS amplitude of variation(△GLS),and MCE derived myocardial blood flow(MBF),and myocardial flow reserve (MFR) were obtained.And the correlation between GLS/△GLS and MBF/MFR was analyzed.Results At baseline,the GLS and MBF were similar between CSF group and control group(P ＞0.05).After LDDSE,both GLS and MBF were significantly increased in two groups (P ＜0.05).The GLS,△GLS,MBF,and MFR in CSF group were significantly lower than those in control group(P ＜0.05).There was no significant correlation between GLS and MBF at baseline in the CSF group(r =-0.274,P =0.111).However,after LDDSE significant correlation existed between GLS and MBF(r =-0.630,P =0.000).Conclusions LV longituadinal systolic function is impaired in patients with CSF under dobutamine stress test,the impairment of MBF and MFR could be an important contributor to the decrease of LV longituadinal systolic function.
