Tricuspid Annular Plane Systolic Excursion
A simple M-mode measurement of how much the lateral tricuspid annulus moves toward the apex during systole. The most widely used parameter for right ventricular function.
TAPSE is measured by placing an M-mode cursor through the lateral tricuspid annulus in the apical four-chamber view and measuring the total systolic displacement. Normal TAPSE in adults is ≥17 mm (ASE / EACVI 2015 right-heart guidelines).
Reduced TAPSE is a strong predictor of mortality in pulmonary hypertension, advanced heart failure, and post-cardiac-surgery cohorts. It is the headline right-heart parameter on most clinical echocardiography reports.
TAPSE is angle-dependent, proper apical-four-chamber alignment matters, and AI-assisted measurement helps standardize the M-mode line placement.