Fig. 3
Kaplan-Meier analysis of invasively determined right ventricular function. Patients with a pulmonary vascular resistance ≥2 Wood Units, b pulmonary artery compliance <2 ml/mmHg, c cardiac index increase <2 l/min/m2, d peak cardiac index <5.5 l/min/m2 and/or e RV pulmonary vascular reserve (defined as the increase of mean pulmonary artery pressure/increase of cardiac output during exercise) ≥3 mmHg/(l/min) showed worse survival than SSc patients above the respective thresholds