Mitral E/E’ ratio on echocardiogram

Brief Review Abstract: Mitral inflow E/E’ ratio determined by Doppler echocardiogram is an important indicator of left ventricular diastolic function. It can be used in the presence of atrial fibrillation when E/A ratio is not available. Mitral E/E’ ratio on Doppler echocardiography Tissue Doppler echocardiography showing measurement of mitral E/E’ ratio for assessment of diastolic dysfunction. Initially mitral E wave is measured and stored as given in the image below. After that colour Tissue Doppler (tissue velocity imaging or TVI) mode is switched on to assess tissue Doppler. The cursor is placed over the medial mitral annulus and tissue Doppler tracing obtained. E’ velocity is measured and stored. The software usually gives the E/E’ ratio. In this case the ratio is given as 13.7, suggesting diastolic dysfunction. It may be noted that the Nyquist limit for the colour tissue Doppler is 0.16 meters per second in this image while it is 0.65 meters per second in the image below for colour Doppler imaging (colour flow mapping). This is because the blood flow velocities are much higher than the velocity of tissue movement with systole and diastole. Mitral E/A reversal on echocardiography Conventional Doppler assessment of transmitral flow showing E/E reversal in left ventricular diastolic dysfunction. MV E Vel: early mitral inflow velocity; MV DecT: deceleration time of the early mitral inflow velocity; MV Dec Slope: deceleration slope of mitral in...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: Echocardiogram Library Source Type: blogs