Due to the right ventricle’s (RV) unique geometry and cylindrical contraction pattern, assessing its function on echocardiography can be difficult. One of the more simple and reproducible techniques used to determine RV function is the tricuspid annular plane systolic excursion (TAPSE).
This is easy to do at the bedside using transthoracic echocardiography (TTE). After obtaining an apical four chamber view, motion-mode (“M-mode“) is shot through the lateral tricuspid valve annulus. During systole, this segment moves inward, so M-mode is able to measure its longitudinal displacement. More movement indicates better RV systolic function.
View this post on Instagram
Measuring right ventricular (RV) dysfunction with transthoracic echocardiography (TTE) is difficult due to the complex geometry and cylindrical contraction pattern of the RV. The tricuspid annular plane systolic excursion (TAPSE) is a simple and reproducible metric which is fairly easy to obtain with M-mode in the apical four chamber view. I'm shooting the M-mode beam across the lateral annulus of the tricuspid valve. More movement of the lateral tricuspid annulus during systole translates to a reassuring RV function. ????
Because this movement of the tricuspid annulus is relative to the echo transducer, the overall measurement is influenced by the transducer angle. And as with all RV systolic function parameters, the left ventricular function can have a significant influence on measurements.