Figure 1: Echocardiographic indexes of left ventricular diastolic function. Standard Doppler of transmitral flow (a) and Tissue Doppler of left ventricular myocardial motion (b). The main indexes for the assessment of left ventricular diastolic function are (1) the peak early diastolic myocardial velocity , which is an index of LV relaxation; (2) the ratio between the peak early diastolic velocity of transmitral flow and ( ratio), which is an index of left ventricular filling pressure.