Features at study entry
| Age (years) (mean (SD)) | 27.7 (6.4) | |
|---|---|---|
| Range | 17 to 46 | |
| Valve position (n = 59) | ||
| Mitral | 39 | 66% |
| Aortic | 15 | 25% |
| Tricuspid | 2 | 3% |
| Double (mitral–aortic) | 3 | 5% |
| Valve type (n = 62) | ||
| Ball caged valves | 34 | 55% |
| Mitral | 23 | |
| Aortic | 11 | |
| Tilting disc | 23 | 37% |
| Mitral | 16 | |
| Aortic | 5 | |
| Tricuspid | 2 | |
| Bileaflet valves | 5 | 8% |
| Mitral | 3 | |
| Aortic | 2 |