Conventional echocardiography measurements in patients with systemic sclerosis and control subjects
| Controls | Systemic sclerosis | p-value | |
| Subjects n | 13 | 25 | |
| Aortic cardiac output L·min−1·m-2 | 2.9±0.4 | 3±0.7 | 0.68 |
| Tricuspid regurgitant jet maximal velocity m·s−1 | 2.2±0.3 | 2.4±0.4 | 0.2 |
| Systolic RV pressure gradient mmHg | 20±5 | 23±8 | 0.2 |
| Pulmonary acceleration time ms | 141±17 | 123±24 | 0.02 |
| Pulmonary acceleration time/ejection time % | 45±6 | 40±7 | 0.03 |
| RV end-diastolic free wall thickness mm | 3.7±6.5 | 5.6±2.0 | 0.01 |
| RV end-diastolic area cm2 | 9.4±2.6 | 11.1±2.7 | 0.06 |
| RV/LV end-diastolic area ratio % | 32.8±6.2 | 39.9±9.2 | 0.02 |
| RV area shortening fraction % | 59.8±9.9 | 54.8±8.5 | 0.1 |
| RV performance index | 0.19±0.05 | 0.27±0.15 | 0.07 |
| TAPSE cm | 2.7±0.3 | 2.4±0.5 | 0.1 |
| Tricuspid flow E cm·s−1 | 56±12 | 44±11 | 0.007 |
| Tricuspid flow A cm·s−1 | 32±11 | 36±11 | 0.4 |
| Tricuspid flow E/A | 1.9±0.6 | 1.3±0.4 | 0.008 |
| LV ejection fraction % | 71.6±7.9 | 70.5±9.1 | 0.7 |
| Mitral flow E cm·s−1 | 84±19 | 80±23 | 0.6 |
| Mitral flow A cm·s−1 | 70±16 | 71±28 | 0.9 |
| Mitral flow E/A | 1.3±0.4 | 1.3±0.5 | 0.9 |
Data are presented as mean±sd, unless otherwise stated. RV: right ventricle; LV: left ventricle; TAPSE: tricuspid annular plane systolic excursion; E: early diastolic wave; A: late diastolic wave.