Prognostic Value of Low-Dose Adenosine Stress Echocardiography in Patients With Acute Myocardial Infarction After Percutaneous Coronary Intervention Treatment

Objective: To explore the prognostic value of low-dose adenosine stress echocardiography(LDASE) in patients with acute myocardial infarction(AMI) after percutaneous coronary intervention(PCI).Methods: We retrospectively summarized 79 AMI patients with PCI,and then received LDASE within 1 week of PCI to test their cardiac function.According to left ventricular eject fraction(LVEF) increased ≥ 5%,the patients were divided into 2 groups,Improved group,n=42 and Non-improved group,n=37.The patients were followed-up for 24 months.The main adverse cardiac events(MACE) were compared between two groups,and the logistic regression analysis was applied to identify the risk factor for clinical prognosis.Results: The gender,mean age,left ventricular diastolic diameter after PCI,LVEF,plasma BNP level and Killip classification at admission were similar between two groups,P0.05.The incidences of MACE for Improved group was significantly lower than that of Non-improved group(14.29% vs.43.24%),P0.05.Compared with Improved group,Non-improved group had more incidence of heart failure(14.29 % vs.37.84%) and AMI(0.00% vs.5.41%),P0.05 respectively.Logistic regression analysis identified that LVEF increasing5% and segment improvement ≤ 3 were the risk factors for clinical prognosis.Conclusion: LDASE is an effective assessment for left ventricular function,it could be used for early prognosis of MACE in AMI patients after PCI.