Echocardiography evaluation of the studied groups
Using echocardiography, the cardiac function was evaluated (Sonoscape Model P-15 device, China). Transthoracic echocardiography was used according to the standard method to evaluate cardiac functionDimensions of the left ventricle after systole (LVESd, cm).Dimensions of the left ventricle after diastole (LVEDd, cm).The left ventricle's ejection fraction (EF) and fractional shortening (FS) were calculated using the following formulas