Tricuspid regurgitation
Description
- Mostly a secondary (functional) disease of the right ventricle and annulus, not of the leaflets
- Functional ~80-90% | Primary (leaflet) ~10-20%
- Long ignored ("the forgotten valve"), now recognised as an independent predictor of mortality at every level of severity
- Severity grading has been extended beyond "severe"
| Grade | Vena contracta | EROA |
|---|---|---|
| Mild | <3 mm | - |
| Moderate | 3-6.9 mm | 20-39 mm2 |
| Severe | >=7 mm | >=40 mm2 |
| Massive | 14-20 mm | 60-79 mm2 |
| Torrential | >=21 mm | >=80 mm2 |
- The massive/torrential grades exist because outcomes keep worsening above "severe" - and because they identify who fails transcatheter repair
6 more sections, plus exam facts
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