Operative characteristics
| Characteristic | Total (n = 155) | ΔEF >10 EFU (n = 55) | ΔEF ⩽10 EFU (n = 68) |
|---|---|---|---|
| Data are number (%) of patients or mean (SD). | |||
| CPB, cardiopulmonary bypass. | |||
| Bioprosthesis | 82 (53%) | 27 (49%) | 35 (51%) |
| Supra-annular Carpentier-Edwards | 62 | 21 | 23 |
| Medtronic Intact | 10 | 2 | 7 |
| Medtronic Mosaic | 9 | 4 | 5 |
| Carpentier-Edwards | 1 | 0 | 0 |
| Mechanical prosthesis | 73 (47%) | 28 (51%) | 33 (49%) |
| St Jude | 30 | 11 | 11 |
| Carbomedics | 29 | 13 | 13 |
| St Jude Silzone | 8 | 2 | 5 |
| Other | 6 | 2 | 4 |
| Prosthetic diameter (mm) | 23 (2) | 23 (2) | 24 (2) |
| Duration of CPB (min) | 70 (28) | 69 (25) | 70 (29) |
| Range | 30–172 | 32–143 | 30–172 |
| Duration of aortic cross clamp (min) | 49 (19) | 50 (19) | 49 (19) |
| Range | 21–115 | 24–115 | 32–99 |
| Combined procedures | 25 (16%) | 12 (22%) | 10 (15%) |
| Coronary revascularisation | 20 (13%) | 9 (16%) | 10 (15%) |
| 1 graft | 12 | 6 | 5 |
| >1 graft | 8 | 3 | 5 |
| Mitral valvoplasty | 1 | 1 | 0 |
| Myectomy | 2 | 1 | 0 |
| Aortic root repair | 1 | 1 | 0 |