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Dobutamine stress echocardiography can predict reversible ventricular dysfunction after acute myocardial infarction. 2005

Víctor M Mauro, and Tomás F Cianciulli, and Horacio A Prezioso, and Sergio D Llanos Dethinne, and Jorge H Leguizamón, and Adrían A Charask, and Enrique B Fairman, and Yanina Castillo Costa, and Carlos M Barrero
Department of Cardiology, Clínica Bazterrica, Buenos Aires, Argentina.

BACKGROUND The aim of early treatment of acute myocardial infarction (AMI) is to achieve the rapid reperfusion of the culprit artery, which correlates with improvement in ventricular function and survival. With the widespread use of thrombolytic agents or coronary angioplasty as reperfusion strategies for AMI, it is possible to reduce the amount of myocardial necrosis. OBJECTIVE The assessment of residual viability with dobutamine stress echocardiography (DSE) in the infarcted area after AMI is relevant to subsequent management and prognosis. METHODS Thirty-seven patients with AMI (mean age 59 +/- 12, 31 male, 22 with anterior AMI, 15 with inferior AMI) admitted to the coronary care unit within 3.8 +/- 1.8 h of the onset of symptoms were included. Two-dimensional echocardiography (2-D echo) study and DSE were performed at a mean of 4.7 +/- 1.8 days. Follow-up 2-D echo was performed at a mean of 25 +/- 11 days. To assess left ventricular regional systolic function, 2-D echo images were obtained at rest and during dobutamine-induced stress and were analyzed off-line according to the 13-segment model. Improvement in wall motion score (WMS) was defined by a decrease of at least two grades in the score. RESULTS Wall motion score improved in 13 of the 37 patients after DSE (rest WMS 20.9 +/- 2.0 vs. D-WMS 17.7 +/- 2.2; p<0.001), which correlated with clinical or angiographic signs of reperfusion of the culprit vessel in all cases. Follow-up WMS evidenced a significant correlation with WMS after DSE (r = 0.91; p < 0.001). Sensitivity, specificity, and positive and negative predictive values of DSE in detecting patients whose left ventricular function (LVF) improved at 2-D echo follow-up were 72,96,92.8, and 82.7%, respectively. CONCLUSIONS (1) Dobutamine stress echocardiography improved WMS in 35% of patients and correlated with signs of patency of the culprit vessel; (2) LVF improvement after dobutamine was predictive of late LVF recovery; (3) DSE can be a useful and safe tool for detecting reversible myocardial dysfunction after AMI.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009203 Myocardial Infarction NECROSIS of the MYOCARDIUM caused by an obstruction of the blood supply to the heart (CORONARY CIRCULATION). Cardiovascular Stroke,Heart Attack,Myocardial Infarct,Cardiovascular Strokes,Heart Attacks,Infarct, Myocardial,Infarction, Myocardial,Infarctions, Myocardial,Infarcts, Myocardial,Myocardial Infarctions,Myocardial Infarcts,Stroke, Cardiovascular,Strokes, Cardiovascular
D011237 Predictive Value of Tests In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test. Negative Predictive Value,Positive Predictive Value,Predictive Value Of Test,Predictive Values Of Tests,Negative Predictive Values,Positive Predictive Values,Predictive Value, Negative,Predictive Value, Positive
D012107 Research Design A plan for collecting and utilizing data so that desired information can be obtained with sufficient precision or so that an hypothesis can be tested properly. Experimental Design,Data Adjustment,Data Reporting,Design, Experimental,Designs, Experimental,Error Sources,Experimental Designs,Matched Groups,Methodology, Research,Problem Formulation,Research Methodology,Research Proposal,Research Strategy,Research Technics,Research Techniques,Scoring Methods,Adjustment, Data,Adjustments, Data,Data Adjustments,Design, Research,Designs, Research,Error Source,Formulation, Problem,Formulations, Problem,Group, Matched,Groups, Matched,Matched Group,Method, Scoring,Methods, Scoring,Problem Formulations,Proposal, Research,Proposals, Research,Reporting, Data,Research Designs,Research Proposals,Research Strategies,Research Technic,Research Technique,Scoring Method,Source, Error,Sources, Error,Strategies, Research,Strategy, Research,Technic, Research,Technics, Research,Technique, Research,Techniques, Research
D001794 Blood Pressure PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS. Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D003325 Coronary Care Units The hospital unit in which patients with acute cardiac disorders receive intensive care. Care Unit, Coronary,Care Units, Coronary,Coronary Care Unit,Unit, Coronary Care,Units, Coronary Care
D005260 Female Females
D005343 Fibrinolytic Agents Fibrinolysin or agents that convert plasminogen to FIBRINOLYSIN. Antithrombic Drug,Antithrombotic Agent,Antithrombotic Agents,Fibrinolytic Agent,Fibrinolytic Drug,Thrombolytic Agent,Thrombolytic Agents,Thrombolytic Drug,Antithrombic Drugs,Fibrinolytic Drugs,Thrombolytic Drugs,Agent, Antithrombotic,Agent, Fibrinolytic,Agent, Thrombolytic,Agents, Antithrombotic,Drug, Antithrombic,Drug, Fibrinolytic,Drug, Thrombolytic,Drugs, Antithrombic
D005500 Follow-Up Studies Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease. Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup

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