Findings indicative of haemodynamically significant tricuspid stenosis
| Specific findings | |
| Mean pressure gradient | ≥5 mmHg |
| Inflow time-velocity integral | ≥ 60 cm |
| T½ | ≤ 190 ms |
| Valve area by continuity equation* | ≥ 1 cm²* |
| Supportive findings | |
| Enlarged right atrium ≥moderate | |
| Dilated inferior vena cava |
*Stroke volume derived from left or right ventricular outflow. In the presence of more than mild TR, the derived valve area will be underestimated. Nevertheless, a value ≤1 cm² implies a significant haemodynamic burden imposed by combined lesion.
European Journal of Echocardiography (2009) 10, 1-25
