Reliability of echocardiographic estimation of pulmonary artery pressure in patients with severe tricuspid regurgitation

Abstract Background Transthoracic Echocardiography (TTE) seems to be mistaken for the estimation of systolic Pulmonary Artery Pressure (sPAP) especially in patients with severe Tricuspid Regurgitation (TR). This study aimed determine reliability assessment sPAP by TTE this population. Methods is a monocentric analysis 236 consecutive concomitant Right Heart Catheterization (RHC) and performed an heart failure syndrome. Lin's Concordance Coefficient (LCC) Bland-Altman Analysis (BAA) were used compare values RHC TTE. Results The correlation between two procedures was good total population (LCC = 0.80; 95% limits agreement (LOA): 0.74; 0.84), but weaker 78 (33%) TR 0.67; LOA: 0.49; 0.80), propensity underestimation Altered Ventricular (RV) – (AP) coupling did not lead misestimation, contrary elevated Atrial (RAP), which associated about 8 mmHg. presence “C-V waves” sign on RAP curves (Odds-Ratio (OR) 3.32; Confidence Interval (CI): 1.02; 10.9; p=0.04) invasive ≥50 mmHg (OR 2.63; CI: 1.35; 5.16; p<0.01) independent predictors misestimation Conclusion Severe led TTE, if curve shows sign, case high sPAP. Funding Acknowledgement Type funding sources: Public hospital(s). Main source(s): CHU Rennes Pontchaillou