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

A simple method to predict impaired right ventricular performance and disease severity in chronic pulmonary hypertension using strain rate imaging

“…In the recent study, longitudinal strain and SR accurately reflected RV contractility in an animal model [4]. Peak systolic TV of the tricuspid lateral annulus has been identified to correlate with the RV ejection fraction [6] and to have an inverse relationship with catheterizationderived mean PAP and PVR in chronic PH [24]. However, TV has no ability to distinguish between active and passive wall motion, such as translation and tethering.…”

“…However, simultaneous measurements of echocardiography may be inaccurate due to suboptimal positioning of the patient. The delay within 24 h between echocardiography and catheterization was acceptable [24,26]. Second, Doppler-based strain measurements are angle-dependent.…”

Diagnosis and Assessment of Pulmonary Arterial Hypertension

“…In patients with PAH (n ϭ 47), survival estimates at 1 and 2 years were 94% and 88%, respectively, in subjects with a TAPSE Ն1.8 cm, and 60% and 50%, respectively, in subjects with a TAPSE Ͻ1.8 cm. Gurudevan et al (122) reported that in 50 patients with suspected chronic thromboembolic PH, the systolic velocity of the tricuspid annulus had an inverse relationship with mPAP and PVR. Mahapatra et al (123) found that a measure of pulmonary vascular capacitance, as determined by Doppler echocardiography, is a predictor of mortality in patients with IPAH and adds prognostic value to conventional risk markers.…”

Utility of Right Ventricular Tei Index in the Noninvasive Evaluation of Chronic Thromboembolic Pulmonary Hypertension Before and After Pulmonary Thromboendarterectomy

“…Although peak pulmonary artery pressure (PAP) can be estimated accurately with the use of continuous-wave Doppler (1), conventional 2-dimensional echocardiographic measurements cannot be extrapolated into accurate assessments of RV volume or global function. In addition, noninvasive estimation of pulmonary vascular resistance has its limitations (2,3).…”