Assessment of the correlation between time during admission to percutaneous coronary intervention and left ventricular function recovery of acute myocardial infarction by two-dimensional speckle tracking imaging
10.3760/cma.j.issn.1004-4477.2011.11.003
- VernacularTitle:二维纵向应变评价急性心肌梗死患者入院至介入治疗时间与左心室功能改善的相关性研究
- Author:
Bo HU
;
Qing ZHOU
;
Jia HUANG
;
Yan JIA
;
Tian WU
;
Qing DENG
;
Ruiqiang GUO
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Myocardial infarction;
Angioplasty,transluminal,percutaneous coronary;
Speckle tracking imaging
- From:
Chinese Journal of Ultrasonography
2011;20(11):930-934
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the correlation between time during admission to percutaneous coronary intervention (PCI) and left ventricular function recovery of acute myocardial infarction (AMI) by two-dimensional speckle tracking imaging (STI).The clinical value of STI in assessing therapeutic effect of AMI treated by PCI and estimation of the prognosis were discussed.Methods Sixty-one AMI patients who had AMI for the first time and had been treated by primary PCI were enrolled.Dynamic images were acquired before PCI,at 7 days after PCI and 30 days after PCI and analyzed by STI.The time during admission to PCI of AMI patients was recorded accurately.Dynamic images were analyzed for longitudinal peak systolic strain (LPSS) values (global,infarcted area) by STI.According to the comparison of left ventricular ejection fraction(LVEF) before PCI and 30 days after PCI,patients were divided into left ventricular function improved group (ΔLVEF≥5 ％) and not-improved group,and the values of LPSS and time during admission to PCI were compared between the two group respectively.Results Compared to not-improved group,the time during admission to PCI in improved group was lower ( P ＜0.001),infarcted segmental LPSS at 7 days after PCI ( P ＜0.05) and both global ( P ＜0.001) and infarcted segmental LPSS ( P ＜0.001) at 30 days after PCI in improved group were higher than those in not-improved group.Linear regression analysis showed that both global and infarcted segmental LPSS were significant correlated to LVEF respectively ( P ＜0.001,all).Infarcted segmental LPSS at 7 days after PCI were correlated to the time during admission to PCI ( P ＜0.05).LVEF ( r =0.303,P ＜0.05),global ( r =0.300,P ＜0.05)and infarcted segmental LPSS ( r =0.590,P ＜0.001) at 30 days after PCI were correlated to the time during admission to PCI.Conclusions STI provides reliable and useful clinical information for the assessment of therapeutic effect of AMI treated by PCI and estimation of the prognosis by sensitively presenting the close correlation between time during admission to PCI and left ventricular function recovery of AMI patients.
