Table 2.
Procedural Characteristics and Outcomes by Stratification of SCI Index
| High SCI (N1 = 275) | Middle SCI (N2 = 658) | Low SCI (N3 = 1,034) | P Valuea | |
|---|---|---|---|---|
| Procedural characteristics | ||||
| Root procedure | 0.201 | |||
| Root repair only | 45 (16.4) | 143 (21.7) | 250 (24.2) | |
| Aortic valve replacement only | 15 (5.4) | 45 (6.8) | 50 (4.8) | |
| Bentall | 57 (20.4) | 123 (18.5) | 214 (20.5) | |
| David | 4 (1.5) | 5 (0.8) | 8 (0.8) | |
| Arch procedure | <0.001 | |||
| Hemiarch replacement | 25 (9.1) | 53 (8.1) | 66 (6.4) | |
| Total arch replacement | 192 (69.8) | 491 (74.6) | 851 (82.3) | |
| ET implantation | 186 (67.6) | 490 (74.5) | 848 (82.0) | <0.001 |
| Hypothermic circulatory arrest | 213 (77.5) | 537 (81.6) | 910 (88.0) | <0.001 |
| Total arch replacement plus FET implantation | 185 (67.3) | 481 (73.1) | 842 (81.4) | <0.001 |
| Concomitant operation | ||||
| CABG | 10 (3.6) | 41 (6.2) | 55 (5.3) | 0.275 |
| Valve surgeryb | 8 (2.9) | 12 (1.8) | 26 (2.5) | 0.523 |
| Primary outcome | ||||
| 90-day mortality | 10 (3.6) | 47 (7.1) | 135 (13.1) | <0.001 |
| Secondary outcomes | ||||
| 30-day mortality | 10 (3.6) | 40 (6.1) | 118 (11.4) | <0.001 |
| Hospital mortality | 10 (3.6) | 47 (7.1) | 136 (13.2) | <0.001 |
| Cardiac death | 5 | 19 | 44 | |
| Neurologic death | 2 | 13 | 36 | |
| Respiratory death | 0 | 3 | 7 | |
| ICU stay, days | 4 (2-7) | 4 (2-7) | 5 (3-11) | <0.001 |
| Ventilation support, h | 26 (17-78) | 33 (17-81) | 43 (19-115) | <0.001 |
| Hospital stay, days | 20 (14-28) | 18 (13-25) | 18 (12-27) | 0.367 |
| Re-exploration for bleeding | 13 (4.8) | 35 (5.3) | 65 (6.3) | 0.520 |
| Stroke | 16 (5.8) | 41 (6.2) | 71 (6.9) | 0.772 |
Values are n (%) or median (IQR).
AVSRR = aortic valve-sparing root replacement; CABG = coronary artery bypass grafting; FET = frozen elephant trunk; ICU = intensive care unit; SCI = systemic coagulation-inflammation; SII = systemic immune-inflammation index.
a
P value represents chi square analysis for categorical variables and Kruskal-Wallis rank sum for continuous variables.
b
Indicated the surgery including mitral, tricuspid, pulmonary valve surgery, but not aortic valve surgery.