0034: Dobutamine stress echocardiography predicts the potential of myocardial recovery after revascularization in patients with acute myocardial infarction

ObjectivesAfter a myocardial infarction (MI), patients are at high risk for major cardiovascular events and should benefit from revascularization to recover the infarcted myocardium. The roles of dubutamine stress echocardiography (DSE) have been studied extensively in this indication. The aim of our study is to correlate the results of DSE with the potential for myocardial recovery after revascularization in our patients.MethodsIt is a single-center prospective study on 146 patients with an acute coronary syndrome with ST segment elevation (STEMI), thrombolysis or not, admitted to the cardiology department since the beginning of September 2012 to the end of August 2013 and has undergo a pharmacological stress echocardiography with Dobutamine (DSE), an average of 4 weeks after the acute episode, and followed for a year.ResultsOf 146 patients, the average age was 55±8 years, 85% men, 36% had hypertension, 41% were diabetic, and 31% had dyslipidemia. Thrombolysis was performed in 63% of patients. 58% of patients had an anterior myocardial infarction. The hospital stay averaged 8±3 days. The left ventricular fraction (LVEF) at stress estimated 48.2±6.8%. 89% of patients have benefited from coronary angiography (130 patients) including 3/4 had single or two-vessel disease. Cardiovascular mortality at 1 year was 3.1% (n=5), 19.2% of MI (n=28). Nearly three-quarters of patients who had a viability at DSE improved their LVEF at 1 year (p=0.004) with a high sensitivity (97.1%) and a good specificity (75%), and nearly two thirds had a viability at DSE improved their wall motion after revascularization (p=0.005).ConclusionDobutamine stress echocardiography predicts the potential for recovery after myocardial revascularization in patients with acute myocardial infarction