Table 2 Operative details for the DAC and RAC groups
Variables | DAC group (n = 341) | RAC group (n = 90) | P value | Matched DAC group (n = 154) | Matched RAC group (n = 77) | P value |
|---|---|---|---|---|---|---|
Site of tears | Â | Â | 0.286 | Â | Â | 0.547 |
 Ascending aorta | 191 (56.0%) | 42 (46.7%) |  | 79 (51.3%) | 37 (48.1%) |  |
 Aortic arch | 98 (28.7%) | 28 (31.1%) |  | 45 (29.2%) | 21 (27.3%) |  |
 Descending aorta | 22 (6.5%) | 10 (11.1%) |  | 11 (7.1%) | 10 (13.0%) |  |
 Unseen | 30 (8.8%) | 10 (11.1%) |  | 19 (12.3%) | 9 (11.7%) |  |
Root Surgery | Â | Â | 0.168 | Â | Â | 0.181 |
 Untreated | 9 (2.6%) | 1 (1.1%) |  | 4 (2.6%) | 0 |  |
 Root reconstruction | 237 (69.5%) | 69 (76.7%) |  | 102 (66.2%) | 59 (76.6%) |  |
 Bentall | 90 (26.4%) | 16 (17.8%) |  | 46 (29.9%) | 16 (20.8%) |  |
 Wheat | 1 (0.3%) | 1 (1.1%) |  | 0 | 0 |  |
 David | 4 (1.2%) | 3 (3.3%) |  | 2 (1.3%) | 2 (2.6%) |  |
Arch Surgery | Â | Â | 0.719 | Â | Â | 0.969 |
 Untreated | 10 (2.9%) | 3 (3.3%) |  | 3 (1.9%) | 1 (1.3%) |  |
 Hemi-arch | 44 (12.9%) | 9 (10.0%) |  | 20 (13.0%) | 9 (11.7%) |  |
 Total-arch | 181 (53.1%) | 45 (50.0%) |  | 78 (50.6%) | 39 (50.6%) |  |
 Arch stent | 106 (31.1%) | 33 (36.7%) |  | 53 (34.4%) | 28 (36.4%) |  |
 Descending stent | 289 (84.8%) | 79 (87.8%) | 0.470 | 130 (84.4%) | 67 (87.0%) | 0.599 |
Perfusion Method | Â | Â | 0.859 | Â | Â | 0.616 |
 Without perfusion | 1 (0.3%) | 0 |  | 0 | 0 |  |
 ACP | 336 (98.8%) | 89 (98.9%) |  | 153 (99.4%) | 76 (98.7%) |  |
 RCP | 3 (0.9%) | 1 (1.1%) |  | 1 (0.6%) | 1 (1.3%) |  |
Operation time (h) | 8.18 ± 1.93 | 8.52 ± 1.87 | 0.130 | 8.09 ± 1.96 | 8.50 ± 1.85 | 0.127 |
CPB (min) | 251.92 ± 82.42 | 248.66 ± 1.87 | 0.734 | 241.68 ± 72.41 | 244.30 ± 70.50 | 0.795 |
Crossclamp time(min) | 176.12 ± 57.10 | 168.93 ± 56.17 | 0.292 | 168.59 ± 55.19 | 166.71 ± 56.78 | 0.810 |
DHCA (min) | 30.51 ± 11.19 | 28.21 ± 8.87 | 0.077 | 28.87 ± 9.93 | 28.09 ± 8.92 | 0.568 |