Abstract
Background The ratio of the transmitral early inflow wave velocity (E wave velocity) and the velocity of the septal (or lateral) mitral annulus as measured by tissue Doppler (the e’ wave velocity) can be used to estimate left atrial pressure on echocardiographic examination. An elevated E/e’ (more than 15 when using the septal mitral annular velocity) is an established measure of elevated LAP. Furthermore when the left atrial pressure rises, simultaneous changes take place in the pulmonary venous flow. The normal flow pattern in the pulmonary veins consist of a prominent systolic and a smaller diastolic component with the ratio of the peak systolic to diastolic velocities more than 1. With elevated left atrial pressure the ratio drops to below 1.
Highlights
The ratio of the transmitral early inflow wave velocity (E wave velocity) and the velocity of the septal mitral annulus as measured by tissue Doppler can be used to estimate left atrial pressure on echocardiographic examination
The normal flow pattern in the pulmonary veins consist of a prominent systolic and a smaller diastolic component with the ratio of the peak systolic to diastolic velocities more than 1
Hypothesis We hypothesize that echocardiographic techniques of measuring Left Atrial Pressure (LAP) can be extrapolated to cardiac Cardiac Magnetic Resonance Imaging (CMR) and should correlate well with echo derived E/e’
Summary
Extrapolating echocardiographic determinants of elevated Left Atrial Pressure (LAP) to Cardiac Magnetic Resonance Imaging (CMR) to determine the best CMR correlate of elevated LAP. Mohan Mallikarjuna Rao Edupuganti2*, Srikanth Vallurupalli, Sabha Bhatti, Shelly Lensing, Tarun Pandey. From 19th Annual SCMR Scientific Sessions Los Angeles, CA, USA. From 19th Annual SCMR Scientific Sessions Los Angeles, CA, USA. 27-30 January 2016
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