- Tricuspid Annular Plane Systolic Excursion (TAPSE) is a measurement of the systolic longitudinal displacement of the lateral tricuspid annulus towards the apex
- Measures distance of the tricuspid annulus moving up towards the apex during systole
- TAPSE is less preload dependent than other markers of RV function and is performed in patients using both TTE and TEE. 1
- Measured using M-mode echocardiography in the A4C to assess right ventricular function
- the M-mode cursor is directed through the lateral annulus of the tricuspid valve, and the distance of annular motion during systole is measured longitudinally 1
- the view that provides optimal longitudinal alignment should be used.
- Specific, modestly sensitive
- Prognostic in Pulmonary Hypertension
- Whereas TAPSE measures distance, you can also measure the velocity of this movement using Tissue Doppler → S’ (peak systolic velocity)
- An S’ velocity < 9.5 cm/sec measured on the free-wall side indicates RV systolic dysfunction. 2