Mitral E/E ’ for assessment of left ventricular diastolic function

Mitral E/E’ for assessment of left ventricular diastolic function Mitral E/E’ for assessment of left ventricular diastolic function E/E’ measured using a combination of mitral flow Doppler and tissue Doppler of mitral annulus is an important measure of left ventricular diastolic function. Assessment of diastolic function of the left ventricle is assuming more importance after the recognition of diastolic heart failure which is otherwise known as heart failure with preserved ejection fraction (HFpEF). As the population ages, frequency of HFpEF is on the rise. The image illustrates measurement of E’ by tissue Doppler. Previously measured E is used to calculate the E/E’ ratio here. Tissue Doppler measurement in the image is from the medial mitral annulus region. Conventionally reversal of E/A (early diastolic and atrial systolic mitral flow velocities) is taken as indicating left ventricular diastolic dysfunction. In normal left ventricular flow pattern, E wave is taller than A wave. With diastolic dysfunction, early diastolic flow decreases and the late diastolic flow gets augmented due to more forceful atrial contraction. Mitral flow varies both with left atrial pressure and the left ventricular relaxation time constant (tau). E’ measured by tissue Doppler is the movement of mitral annulus during early diastole and is inversely proportional to tau. Hence E/E’ will be directly proportional to left atrial pressure. Hence E/E’ will ...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: Uncategorized mitral flow Doppler tissue Doppler of mitral annulus Source Type: blogs