Table 1.
Patient characteristics by crossclamp time
| Patient characteristics | All patients (n = 440), N (%) median [IQR] | CCT <90 min (n = 100), N (%) median [IQR] | CCT 90 <X < 180 min (n = 268), N (%) median [IQR] | CCT ≥180 min (n = 72), N (%) median [IQR] | P value |
|---|---|---|---|---|---|
| Age | 61 [51-69] | 66 [58-75] | 60 [49-69] | 56 [46-62] | <.001∗ |
| Female | 100 (23) | 50 (50) | 46 (17) | 4 (6) | <.001∗ |
| BSA | 2.04 [1.88-2.20] | 1.91 [1.75-2.13] | 2.05 [1.91-2.21] | 2.17 [2.01-2.33] | <.001∗ |
| Hypertension | 325 (74) | 84 (84) | 193 (72) | 48 (67) | .021∗ |
| On dialysis | 5 (1) | 1 (1) | 1 (0) | 3 (4) | .068 |
| Diabetes | 61 (14) | 19 (19) | 30 (11) | 12 (17) | .118 |
| Endocarditis | 25 (6) | 2 (2) | 11 (4) | 12 (17) | <.001∗ |
| CLD | 57 (13) | 11 (11) | 40 (15) | 6 (8) | .269 |
| CVD | 50 (11) | 15 (15) | 26 (10) | 9 (13) | .343 |
| PVD | 103 (23) | 23 (23) | 60 (22) | 20 (28) | .628 |
| Preoperative LVEF | 60 [55-62] | 60 [55-62.5] | 60 [52.5-62.5] | 57.5 [54-60] | .524 |
| Low EF (<40%) | 32 (7) | 3 (3) | 27 (10) | 2 (3) | .018∗ |
| Moderate or severe AS | 61 (14) | 18 (18) | 39 (15) | 4 (6) | .058 |
| Moderate or severe AI | 119 (27) | 11 (11) | 84 (31) | 24 (33) | <.001∗ |
| Primary indication | |||||
| Aneurysm | 288 (65) | 61 (61) | 184 (689) | 43 (60) | .208 |
| Dissection | 106 (24) | 28 (28) | 62 (23) | 16 (22) | .575 |
| Valvular | 28 (6) | 7 (7) | 16 (6) | 5 (7) | .915 |
| Obstruction | 2 (0) | 1 (1) | 0 (0) | 1 (1) | .195 |
| Infection | 11 (2) | 2 (2) | 4 (2) | 5 (7) | .029∗ |
| Hematoma | 6 (1) | 2 (2) | 3 (1) | 1 (1) | .810 |
| Urgent/emergent | 214 (49) | 45 (45) | 141 (53) | 28 (39) | .084 |
CCT, Crossclamp time; IQR, interquartile range; BSA, body surface area; CLD, chronic lung disease; CVD, cerebrovascular disease; PVD, peripheral vascular disease; LVEF, left ventricular ejection fraction; EF, ejection fraction; AS, aortic stenosis (moderate or severe); AI, aortic insufficiency (moderate or severe).
∗
P value < .05.