Echocardiographic parameters tested by day 3 (D3) and day 7 (D7) after procedure. End diastolic Interventricular septum thickness (IVSD); end diastolic left ventricle internal diameter (LVIDD); end diastolic left ventricular posterior wall thickness (LVPWD); end systolic interventricular septum thickness (IVSS); end systolic left ventricular internal diameter (LVIDS); end systolic left ventricular posterior wall thickness (LVPWS); left ventricle ejection fraction (LVEF); fractional shortening (FS); heart rate (HR); cardiac output (CO). * EF: p < 0.001ApTOLL vs. Placebo. FS: p < 0.003 ApTOLL vs. Placebo.