Table 1 Baseline characteristics and clinical characteristics according to ACEF score groups before matching and after IPTW.
Parameters | ACEF score tertiles | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Before matching | After IPTW | |||||||||
Overall |  ≤ 0.73 | 0.73–0.95 |  > 0.95 | p | Overall |  ≤ 0.73 | 0.73–0.95 |  > 0.95 | p | |
n | 225 | 73 | 78 | 74 | NA | 239.97 | 70.57 | 70.81 | 98.6 | NA |
Demographical and clinical variables | ||||||||||
 Age (years) | 51.24 ± 11.43 | 39.62 ± 7.45 | 53.99 ± 5.60 | 59.80 ± 9.77 |  < 0.001 | 53.11 ± 12.09 | 39.77 ± 8.79 | 53.87 ± 6.01 | 62.11 ± 8.12 |  < 0.001 |
 Male | 131 (58.22) | 43 (58.90) | 40 (51.28) | 48 (64.86) | 0.234 | 78.82 (32.84) | 25.04 (35.48) | 28.51 (40.26) | 25.27 (25.63) | 0.345 |
 BMI (kg/m2) | 25.19 ± 3.15 | 25.56 ± 3.65 | 25.24 ± 2.94 | 24.77 ± 2.80 | 0.316 | 25.18 ± 2.93 | 24.69 ± 3.57 | 25.26 ± 2.92 | 25.48 ± 2.36 | 0.533 |
 Resuscitation before surgery | 7 (3.11) | 0 (0.00) | 2 (2.56) | 5 (6.76) | 0.058 | 2.78 (1.16) | 0.00 (0.00) | 0.94 (1.32) | 1.84 (1.87) | 0.339 |
 Emergency surgery | 198 (88.00) | 63 (86.30) | 69 (88.46) | 66 (89.19) | 0.855 | 212.68 (88.63) | 62.34 (88.34) | 62.30 (87.97) | 88.05 (89.31) | 0.968 |
 Inotropes at referral | 11 (4.89) | 2 (2.74) | 4 (5.13) | 5 (6.76) | 0.525 | 7.20 (3.00) | 1.62 (2.29) | 2.44 (3.44) | 3.14 (3.19) | 0.901 |
 Hemiparesis | 8 (3.56) | 1 (1.37) | 2 (2.56) | 5 (6.76) | 0.178 | 4.22 (1.76) | 0.53 (0.75) | 1.36 (1.93) | 2.33 (2.37) | 0.606 |
 Preoperative ventilation | 8 (3.56) | 1 (1.37) | 4 (5.13) | 3 (4.05) | 0.442 | 5.72 (2.38) | 1.62 (2.30) | 2.42 (3.42) | 1.67 (1.69) | 0.757 |
 Hypertension | 172 (76.44) | 48 (65.75) | 62 (79.49) | 62 (83.78) | 0.027 | 168.98 (70.42) | 54.53 (77.27) | 53.58 (75.66) | 60.88 (61.75) | 0.427 |
 Diabetes | 12 (5.33) | 4 (5.48) | 5 (6.41) | 3 (4.05) | 0.810 | 9.82 (4.09) | 2.42 (3.43) | 3.81 (5.38) | 3.59 (3.64) | 0.805 |
 Previous cardiac surgery | 7 (3.11) | 1 (1.37) | 2 (2.56) | 4 (5.41) | 0.349 | 8.15 (3.39) | 4.49 (6.36) | 1.04 (1.47) | 2.61 (2.65) | 0.391 |
 LVEF (%) | 63.65 ± 7.01 | 66.08 ± 5.31 | 64.92 ± 5.57 | 59.91 ± 8.28 |  < 0.001 | 64.10 ± 6.67 | 66.27 ± 4.98 | 64.75 ± 5.75 | 62.08 ± 7.73 | 0.057 |
 Aortic valve regurgitation | 65 (28.89) | 29 (39.73) | 20 (25.64) | 18 (24.32) | 0.076 | 80.52 (33.55) | 17.46 (24.74) | 18.75 (26.48) | 44.31 (44.94) | 0.236 |
 Pericardial effusion | 10 (4.44) | 2 (2.74) | 3 (3.85) | 5 (6.76) | 0.473 | 5.33 (2.22) | 1.10 (1.56) | 1.88 (2.65) | 2.35 (2.39) | 0.846 |
 End-organ malperfusion |  |  |  |  | NA |  |  |  |  | NA |
 Coronary | 8 (3.56) | 0 (0.00) | 4 (5.13) | 4 (5.41) | 0.136 | 4.27 (1.78) | 0.00 (0.00) | 2.13 (3.00) | 2.15 (2.18) | 0.298 |
 Cerebral | 23 (10.22) | 3 (4.11) | 8 (10.26) | 12 (16.22) | 0.053 | 20.51 (8.55) | 7.59 (10.76) | 6.33 (8.93) | 6.59 (6.69) | 0.767 |
 Visceral | 20 (8.89) | 3 (4.11) | 7 (8.97) | 10 (13.51) | 0.134 | 20.83 (8.68) | 8.00 (11.33) | 6.54 (9.23) | 6.29 (6.38) | 0.709 |
 Peripheral | 19 (8.44) | 3 (4.11) | 7 (8.97) | 9 (12.16) | 0.210 | 15.02 (6.26) | 4.23 (5.99) | 6.13 (8.66) | 4.66 (4.73) | 0.658 |
Extension of dissection | Â | Â | Â | Â | NA | Â | Â | Â | Â | NA |
 Supra-aortic vessels | 32 (14.22) | 7 (9.59) | 11 (14.10) | 14 (18.92) | 0.269 | 24.48 (10.20) | 5.88 (8.34) | 8.88 (12.54) | 9.71 (9.85) | 0.747 |
 Iliac vessels | 23 (10.22) | 3 (4.11) | 8 (10.26) | 12 (16.22) | 0.053 | 19.66 (8.19) | 5.84 (8.28) | 6.89 (9.74) | 6.92 (7.02) | 0.861 |
Laboratory data | ||||||||||
 Leucocytes(109/L) | 12.67 ± 3.83 | 12.69 ± 4.43 | 12.58 ± 3.16 | 12.74 ± 3.89 | 0.968 | 12.18 ± 3.69 | 12.37 ± 4.44 | 12.61 ± 3.11 | 11.72 ± 3.47 | 0.543 |
 Hemoglobin (g/L) | 130.71 ± 19.19 | 135.26 ± 18.50 | 128.64 ± 18.11 | 128.41 ± 20.38 | 0.047 | 134.46 ± 18.41 | 136.03 ± 18.62 | 130.18 ± 18.39 | 136.41 ± 17.96 | 0.193 |
 Serum creatinine (mmol/l) | 112.05 ± 106.26 | 90.40 ± 28.95 | 83.91 ± 30.41 | 163.0 ± 169.97 |  < 0.001 | 107.33 ± 84.16 | 99.96 ± 31.45 | 86.80 ± 30.75 | 127.3 ± 123.52 | 0.019 |
 Albumin (g/L) | 37.72 ± 6.72 | 39.34 ± 6.31 | 37.84 ± 6.26 | 36.01 ± 7.23 | 0.010 | 39.06 ± 7.72 | 38.11 ± 5.63 | 37.94 ± 6.28 | 40.55 ± 9.58 | 0.566 |
Surgical data | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 Aortic root procedure |  |  |  |  | 0.003 |  |  |  |  | 0.376 |
 No treatment | 69 (30.67) | 25 (34.25) | 22 (28.21) | 22 (29.73) |  | 56.53 (23.56) | 17.83 (25.26) | 20.42 (28.84) | 18.28 (18.54) |  |
 Sinus plasty | 106 (47.11) | 22 (30.14) | 42 (53.85) | 42 (56.76) |  | 112.77 (46.99) | 37.36 (52.94) | 34.93 (49.33) | 40.48 (41.06) |  |
 Bentall procedure | 50 (22.22) | 26 (35.62) | 14 (17.95) | 10 (13.51) |  | 70.67 (29.45) | 15.38 (21.80) | 15.46 (21.83) | 39.83 (40.40) |  |
 Concomitant CABG | 8 (3.56) | 0 (0.00) | 4 (5.13) | 4 (5.41) | 0.136 | 3.86 (1.61) | 0.00 (0.00) | 2.04 (2.88) | 1.83 (1.85) | 0.259 |
 Operative time (min) | 309.20 ± 69.31 | 309.90 ± 73.96 | 316.00 ± 70.92 | 301.30 ± 61.64 | 0.272 | 312.59 ± 61.75 | 309.15 ± 63.77 | 307.41 ± 67.63 | 321.87 ± 57.59 | 0.221 |
 CPB time (min) | 148.41 ± 46.90 | 149.55 ± 52.59 | 152.88 ± 49.81 | 142.57 ± 36.70 | 0.388 | 151.53 ± 42.45 | 149.14 ± 44.10 | 144.97 ± 44.50 | 157.95 ± 39.17 | 0.458 |
 ACC time(min) | 49.99 ± 24.55 | 49.26 ± 24.07 | 50.15 ± 26.23 | 50.53 ± 23.47 | 0.950 | 48.63 ± 21.54 | 49.74 ± 21.09 | 48.66 ± 24.74 | 47.80 ± 19.51 | 0.860 |
 SACP time (min) | 9.20 ± 3.41 | 9.09 ± 3.46 | 9.46 ± 3.78 | 9.04 ± 2.96 | 0.715 | 8.72 ± 3.21 | 9.22 ± 3.66 | 9.15 ± 3.35 | 8.06 ± 2.63 | 0.256 |
 24 h bleeding volume(ml) | 496.75 ± 344.74 | 498.6 ± 357.70 | 462.8 ± 365.71 | 530.5 ± 308.25 | 0.483 | 481.7 ± 313.37 | 494.5 ± 318.21 | 472.9 ± 363.03 | 478.8 ± 271.76 | 0.939 |
