Assessment of ventricular synchrony in patients with acute myocardial infarction before and after percutaneous coronary intervention by speckle tracking imaging
10.3760/cma.j.issn.1004-4477.2012.07.002
- VernacularTitle:斑点追踪技术评价急性心肌梗死患者介入治疗前后左心室运动的同步性
- Author:
Ning HE
;
Min REN
;
Jiawei TIAN
;
Ying WANG
;
Xudong WANG
- Publication Type:Journal Article
- Keywords:
Ultrasonography;
Myocardial infarction;
Ventricular function,left;
Speckle tracking imaging
- From:
Chinese Journal of Ultrasonography
2012;(7):558-561
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the changes of ventricular synchrony in patients with acute myocardial infarction(AMI)before and after percutaneous coronary intervention(PCI)by speckle tracking imaging(STI).Methods Thirty patients with AMI were examined by traditional echocardiography and STI before and 5 d,1 month after PCI.Myocardial imaging of left ventricular apical long views and parasternal left ventricular short axis views were recorded and stored.The time to peak longitudinal systolic and diastolic strain rate(TS-SRL,TE-SRL)and to peak radial systolic and diastolic strain rate(TS-SRR,TESRR)were measured respectively.The differences of the maximum and minimum systolic and early diastolic peak time(TSL-diff,TER-diff)and the standard deviation(TSL-SD,TER-SD)in 18 longitudinal segments were calculated.And the differences and standard deviation of TS-SRR and TE-SRR(TSR-diff,TSR-SD,TER-diff,TER-SD)were calculated also.These parameters were compared before and after PCI.Results Compared with before and 5 d after PCI,the values of TSL-diff,TSL-SD,TEL-diff and TEL-SD in 1 month after PCI were decreased significantly(P＜0.01).TSR-diff,TSR-SD,TER-diff and TER-SD were decreased also and the differences had statistical significance(P＜0.01).The cardiac synchronized index and LVEF values showed good negative correlation.Conclusions The systolic and diastolic synchrony of left ventricle in AMI patients was abnormal.STI can evaluate left ventricular synchronized function and the changes before and after PCI to assess the effect of PCI.
