Velocidade de Propagação de Enchimento Precoce e Estudo da Função Diastólica no Enfarte Agudo do Miocárdio Submetido a Reperfusão Aguda (5)

Early flow propagation velocity for assess- ment of diastolic function in myocardial infarction treated with acute reperfusion Introduction: Acute myocardial infarction (MI) causes left ventricular (LV) diastolic dysfunction, which influences prognosis and clinical evolution. Early flow propagation velocity (FPV), evaluated by color M-mode Doppler, has been demonstrated to be a diastolic function parameter with excellent correlation with relaxation constant tau, and is relatively independent of pre- and afterload. Objective: The aim of this study was to evaluate left ventricular relaxation in MI patients treated with acute reperfusion therapy. Methods: Patients with ST-elevation MI treated with reperfusion therapy were evaluated by echocardiography in the first 48 hours and after one week. The parameters studied were: early peak filling velocity (E), late peak filling velocity (A), E/A ratio, E-wave deceleration time (EDT), isovolumic relaxation time (IVRT) and FPV. The values obtained at the first and