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. 2019 Sep 11;12(9):e009047. doi: 10.1161/CIRCIMAGING.119.009047

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Figure 2. — Association of surrogates for right ventricle (RV)-arterial coupling with RV single-beat arterial elastance (Ea) and end-diastolic elastance (Eed) in patients with pulmonary hypertension. A, Tricuspid annular plane systolic excursion (TAPSE)/systolic pulmonary artery pressure (PASP), (B) Fractional area change (FAC)/mean pulmonary artery pressure (mPAP), (C) RV area change/end-systolic area (ESA), and (D) stroke volume (SV)/ESA (all measured by echocardiography except mPAP [right heart catheterization] and SV [cardiac magnetic resonance]) showed significant associations with i, Ea and ii, Eed in the study cohort. Ea and Eed showed no significant association with TAPSE/pulmonary artery acceleration time (ρ=−0.072, P=0.631 and ρ=−0.051, P=0.734, respectively) and PASP/ESA (ρ=0.118, P=0.452 and ρ=0.085, P=0.589, respectively).