Preoperative characteristics
| Total 80 | Re-do complex surgery 39 | Re-do AVR 41 | P value | |
| Age | 51.80±18.73 | 51.51±16.77 | 52.07±20.63 | NS |
| <40 | 24 (30) | 10 (55.6) | 14 (34.1) | NS |
| 40–60 | 25 (31.2) | 16 (41) | 9 (22) | NS |
| 60–80 | 28 (35) | 13 (33.3) | 15 (36.6) | NS |
| >80 | 3 (3.8) | 0 (0) | 3 (7.3) | NS |
| Sex (F) | 18 (22.5) | 9 (23.1) | 9 (22) | NS |
| Body surface area | 1.87±0.27 | 1.90±0.21 | 1.84±0.33 | NS |
| Urgent/emergency | 17 (21.2) | 13 (33.3) | 4 (9.8) | 0.010 |
| Cardiogenic shock | 7 (8.8) | 7 (17.9) | 0 | 0.005 |
| NYHA III-IV | 21 (26.2) | 8 (20.5) | 13 (31.7) | NS |
| Hypertension | 37 (46.2) | 17 (43.6) | 20 (48.8) | NS |
| Diabetes mellitus | 8 (10) | 3 (7.7) | 5 (12.2) | NS |
| Smoker | 14 (17.5) | 7 (17.9) | 7 (17.1) | NS |
| Previous CVA | 9 (11.2) | 7 (17.9) | 2 (4.9) | 0.066 |
| Previous MI | 3 (3.8.) | 2 (5.1) | 1 (2.4) | NS |
| Arrhythmia | 12 (15) | 6 (15.4) | 6 (14.6) | NS |
| Coronary artery disease | 15 (18.8) | 5 (12.8) | 10 (24.4) | NS |
| Marfan syndrome | 8 (10) | 3 (7.7) | 5 (12.2) | NS |
| Good LVEF | 54 (67.5) | 25 (64.1) | 29 (70.7) | NS |
| Moderate LVEF | 20 (25) | 12 (30.8) | 8 (19.5) | NS |
| Poor LVEF | 6 (7.5) | 2 (5.1) | 4 (9.8) | NS |
| Aortic regurgitation | 51 (65.4) | 25 (65.8) | 26 (65) | NS |
| Aortic stenosis | 38 (48.7) | 13 (34.2) | 25 (62.5) | 0.011 |
| Logistic EuroSCORE II | 8.26 10.19 | 11.97 13.15 | 4.82 4.18 | 0.000 |
| I re-do | 64 (80) | 31 (79.5) | 33 (80.5) | NS |
| II re-do | 14 (17.5) | 7 (17.9) | 7 (17.1) | NS |
| III re-do | 1 (1.2) | 0 | 1 (2.4) | NS |
| Interval re-do (years) | 11.39±10.53 | 10.88±12.59 | 11.87±8.26 | NS |
AVR, aortic valve replacement; COPD, chronic obstructive pulmonary disease; CVA, cerebral vascular accident; LVEF, left ventricle ejection function; NS, not stated; NYHA, New York Heart Association.