Noninvasive Assessment of Pulmonary Vascular Resistance Using Doppler Tissue Imaging of the Tricuspid Annulus

Doppler tissue imaging of the lateral tricuspid annulus is a useful clinical tool that can provide a noninvasive estimate of PVR in patients with chronic thromboembolic pulmonary hypertension. In this population, decreasing values of tSm predicted progressively higher measurements of PVR.