| Emergency | No PPM (n = 165) | PPM (n = 196) | p Value |
| 6 (3.6%) | 5 (2.6%) | 0.55 | |
| Additional CABG | 36 (21.8%) | 57 (29.1%) | 0.12 |
| CABG ⩾2 grafts | 13 (7.9%) | 25 (12.8%) | 0.13 |
| Mechananical valve | 79 (47.9%) | 21 (10.7%) | <0.0001 |
| Prosthesis ⩽21 mm | 43 (25%) | 136 (65%) | <0.0001 |
| Aortic root enlargement | 1 (0.6%) | 7 (3.6%) | 0.057 |
| Aortic root replacement | 10 (6.1%) | 3 (1.5%) | 0.021 |
| Reference EOA (cm)2 | 1.7 (3.7) | 1.3 (1.6) | <0.0001 |
| EOAi (cm2/m2) | 0.94 (0.14) | 0.69 (0.07) | <0.0001 |
| Short-term mortality | 9 (5.5%) | 20 (10.2%) | 0.098 |
Values are expressed as mean (SD) or number (%).
PPM, patient-prosthesis mismatch; CABG, coronary artery bypass grafting; EOA, effective orifice area; EOAi, indexed effective orifice area.