Assessment of left ventricular function early and late improvement of acute myocardial infarction after percutaneous coronary intervention by two-dimensional speckle tracking imaging
10.3760/cma.j.issn.1004-4477.2012.11.003
- VernacularTitle:二维斑点追踪技术评价急性心肌梗死患者介入治疗近期与中远期左心室功能改善
- Author:
Bo HU
;
Qing ZHOU
;
Jinling CHEN
;
Jia HUANG
;
Qing DENG
;
Sheng CAO
;
Ruiqiang GUO
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Myocardial infarction;
Angioplasty,transluminal,percutaneous coronary;
Speckle tracking imaging
- From:
Chinese Journal of Ultrasonography
2012;(11):926-931
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess left ventricular function early and late improvement of patients with acute myocardial infarction (AMI) treated by percutaneous coronary intervention (PCI) by speckle tracking imaging (STI).The clinical values of the assessment of STI for the prognosis and heart function improvement of AMI patients treated by PCI were discussed.Methods 73 AMI patients who had AMI for the first time and had been treated by primary PCI from September 2010 to July 2011 and were examined in the follow-ups from December 2010 to February 2012 in our hospital were enrolled.Dynamic images were acquired before PCI,at 3 months and 6 months after PCI and analyzed by STI.Dynamic images were analyzed for longitudinal peak systolic strain (LPSS),radial peak systolic strain (RPSS) and circumferential peak systolic strain (CPSS) values by STI.According to the comparison of left ventricular ejection fraction (LVEF) before PCI and 6 months after PCI,patients were divided into left ventricular function improved group (ΔLVEF6＞5％) and not-improved group.According to the comparison of LVEF before PCI and 3 months after PCI,improved group were divided into left ventricular function early-improved group (ΔLVEF3 ＞5％) and late-improved group.Results The values of all STI parameters before PCI,3 months and 6 months after PCI in improved group were higher than those in not-improved group (P ＜0.001,all).LPSS before PCI and at the follow-ups and RPSS at 3 months after PCI in early-improved group were higher than those in late-improved group (LPSS at 3 months after PCI:P＜0.001;Other parameters:P ＜0.05).There were significant correlations between all STI parameters and both ΔLVEF3 and ΔLVEF6.LPSS before PCI was more closely related to ΔLVEF3 (r =-0.781,P ＜0.001).CPSS at 6 months after PCI was more closely related to ΔLVEF6 (r =-0.834,P ＜ 0.001).Conclusions Early and late function improvement of left ventricle in AMI patients who is treated by PCI are accurately assessed by STI.The precise analyses of longitudinal and circumferential movements in STI are important for clinical diagnosis.
