Estimation of cardiac function includes: Left Atrial (LA) Strain, LA Strain Rate (SR), LA Emptying Function (LAEF), LV Ejection Fraction (EF), Fractional Shortening (FS), Global Longitudinal Strain (GLS), Circumferential Strain (CS) and Radial Strain (RS), LV Strain Rate (SR), Early mitral filling velocity (E), late mitral filling velocity (A), E/A ratio, Deceleration Time (DCT) of early mitral filling velocity, medial and lateral mitral velocities using tissue doppler (e' , a' and s') and E/e' ratio.