Conventional Echocardiogram
The echocardiogram was performed by a single operator blind to the
allocation group. Commercially available echocardiographic equipment
(Vivid E9; GE Medical Systems, Milwaukee, WI, USA) was used, equipped
with linear broadband transducers with a frequency of 5-2 MHz. Cavity
dimensions were measured from longitudinal parasternal view. The
systolic and diastolic cavity volumes, and LVEF, were calculated using
Simpson’s modified biplanar method, as recommended by the American
Society of Echocardiography.27 The LV segmental
contraction analysis was performed through wall motion score index
calculation (WMSI). Valve flow analysis and LV diastolic function were
was performed according to current guidelines.28-30