Table 1.
Actuarial survival and occurrence of valve related events after 10 and 20 years in patients receiving a Bjork-Shiley or porcine prosthesis
| All patients | |||
| 10 years | 20 years | p Value* | |
| Survival | |||
| All survivors | |||
| Bjork-Shiley valve | 58.7 (3.0) | 25.0 (2.7) | 0.39 |
| Porcine valve | 53.6 (3.1) | 22.6 (2.7) | |
| Survivors with original prosthesis intact | |||
| Bjork-Shiley valve | 55.7 (3.1) | 23.5 (2.6) | <0.0001 |
| Porcine valve | 42.6 (3.0) | 6.7 (1.6) | |
| Survivors without a major event | |||
| Bjork-Shiley valve | 47.0 (3.1) | 13.8 (2.2) | 0.0007 |
| Porcine valve | 37.3 (3.0) | 4.8 (1.4) | |
| Valve related events | |||
| Reoperation | |||
| Bjork-Shiley valve | 7.1 (1.8) | 12.2 (2.5) | <0.0001 |
| Porcine valve | 27.0 (3.3) | 67.8 (5.0) | |
| Bleeding: all episodes | |||
| Bjork-Shiley valve | 15.3 (2.7) | 55.6 (5.5) | 0.007 |
| Porcine valve | 7.5 (2.2) | 43.6 (8.6) | |
| Bleeding: major episodes | |||
| Bjork-Shiley valve | 11.7 (2.4) | 40.7 (5.4) | 0.008 |
| Porcine valve | 4.9 (1.8) | 27.9 (8.4) | |
| Embolism: all episodes | |||
| Bjork-Shiley valve | 19.4 (2.8) | 36.6 (4.6) | 0.77 |
| Porcine valve | 25.1 (3.3) | 37.9 (6.5) | |
| Embolism: major episodes | |||
| Bjork-Shiley valve | 8.3 (1.9) | 13.9 (3.1) | 0.68 |
| Porcine valve | 9.0 (2.2) | 13.6 (4.9) | |
| Endocarditis | |||
| Bjork-Shiley valve | 3.8 (1.4) | 7.5 (2.6) | 0.60 |
| Porcine valve | 4.6 (1.6) | 10.3 (4.6) | |
Values are % (mean (SEM)).
*p Value from log rank tests, Bjork-Shiley v porcine valves at 20 years.