Table 1 Comparison of the Edwards SAPIEN XT and Medtronic CoreValve Prostheses
From: Imaging in Transcatheter Aortic Valve Replacement (TAVR): role of the radiologist
Characteristics | Edwards SAPIEN XT | Medtronic CoreValve |
|---|---|---|
Frame | Cobalt chromium | Nitinol |
Leaflets | Bovine pericardial | Porcine pericardial |
Expansion | Balloon expandable | Self-expanding |
Repositionable | No | Yes |
Retrievable | No | Yes |
Annular/valvular fixation | Yes | Yes |
Ascending aorta fixation | No | Yes |
Sheath internal diameter | 18-F, 19-F | 18-F |
Sheath external diameter | 7Â mm | 7Â mm |
Minimal arterial diameter | 6Â mma | 6Â mm |
Suitable for | ||
 Dilated ascending aorta | Yes | No |
 Transapical access | Yes | No |
 Transaxillary access | Yes, limited experience | Yes, limited experience |
 Transaortic access | Yes | Yes |
Longest published follow-up | >6Â years | >4Â years |
Pacemaker requirement | 3 %–8 % | 14 %–40 % |
FDA approval | SAPIEN transfemoral only | No |
Randomised trial results | PARTNER A and B | Results anticipated 2013 |