Table 1.
Univariate preoperative risk assessment.
| Variable | Survivors % (n) | Deceased % (n) | p |
|---|---|---|---|
| Age >65 years | 18.2 (19) | 36.7 (18) | 0.01 |
| Male sex | 72.1 (75) | 63.2 (31) | 0.34 |
| Risk factors | |||
| Arterial hypertension | 79.8 (83) | 89.8 (44) | 0.16 |
| Diabetes | 5.7 (6) | 12.2 (6) | 0.20 |
| Body mass index | 28 ± 4.9 (104) | 29.92 ± 7 (49) | 0.21 |
| Marfan Syndrome | 3.8 (4) | 2.0 (1) | 1.00 |
| Bicuspid aortic valve | 10.5 (11) | 8.1 (4) | 0.77 |
| Redo procedure | 6.7 (7) | 2.0 (1) | 0.43 |
| Presentation | |||
| Pericardial fluid >10 mm | 27.8 (29) | 53 (26) | <0.01 |
| Severe aortic insufficiency | 37.5 (39) | 30.6 (15) | 0.47 |
| Aorta >5 cm | 58.6 (61) | 44.9 (22) | 0.12 |
| Ejection fraction | 54 ± 6.4 | 51.6 ± 6.2 | 0.03 |
| Entry site outside the ascending aorta | 14.4 (15) | 28.5 (14) | 0.04 |
| Malperfusion | |||
| Penn non Aa | 26.9 (28) | 59.1 (29) | <0.01 |
| Cardiogenic shock | 10.5 (11) | 36.7 (18) | <0.01 |
| Limb ischemia | 13.4 (14) | 22.4 (11) | 0.16 |
| Renal ischemia | 4.8 (5) | 4 (2) | 1.00 |
| Cerebral ischemia | 0.9 (1) | 6.1 (3) | 0.09 |
| Mesenteric ischemia | 0 (0) | 6.1 (3) | 0.03 |
| Lab values | |||
| Creatinine >1.7 mg/dL | 22.1 (23) | 40.8 (20) | 0.02 |
| Alanine aminotransferase (ALAT) | 89.38 ± 200 | 205.73 ± 450.23 | 0.13 |
| Aspartate aminotransferase (ASAT) | 113.16 ± 276.54 | 216.59 ± 472.16 | 0.23 |
| Acid base status | |||
| Prebypass base deficit | 3.63 ± 4.60 | 7.04 ± 6.70 | <0.01 |
| Prebypass pH | 7.34 ± 0.08 | 7.26 ± 0.13 | <0.01 |