Table 2:
Variables | Overall population, n = 204 | Open distal, n = 109 | Closed distal, n = 95 | P-value |
---|---|---|---|---|
Anatomy | ||||
Type 2 DeBakey | 24 (12%) | 6 (6%) | 18 (19%) | 0.003 |
Coronary artery (ies) dissection | 45 (23%) | 28 (26%) | 17 (18%) | 0.18 |
Tear identifieda | 175 (88%) | 95 (89%) | 80 (87%) | 0.69 |
Tear root-ascending aorta | 123 (70%) | 45 (42%) | 78 (85%) | <0.001 |
Tear arch | 52 (30%) | 50 (46%) | 2 (2%) | <0.001 |
Tear not founda | 24 (12%) | 12 (11%) | 12 (13%) | 0.72 |
Arterial cannulationb | ||||
Common femoral artery | 147 (74%) | 69 (65%) | 78 (84%) | 0.003 |
Axillary artery | 39 (20%) | 26 (25%) | 13 (14%) | 0.06 |
Other sites | 6 (2%) | 4 (3%) | 2 (2%) | 0.82 |
Combined cannulation | 7 (4%) | 7 (7%) | 0 | 0.03 |
Surgical strategies | ||||
Open/closed distal anastomosis | 109/95 | 109 | 95 | |
HCA time (min ± SD) | 30 ± 14 | |||
HCA temperature (°C±SD) | 19 ± 4 | |||
Antegrade cerebral perfusion | 28 (26%) | |||
Retrograde cerebral perfusion | 24 (22%) | |||
Aortic valve resuspension | 70 (34%) | 42 (39%) | 28 (29%) | 0.17 |
Aortic valve replacement | 13 (6%) | 4 (3%) | 9 (10%) | 0.16 |
Aortic root replacement | 59 (29%)c | 30 (28%) | 29 (31%) | 0.64 |
Mechanical prosthesis | 45 (22%) | 22 (20%) | 23 (24%) | 0.49 |
Biological prosthesis | 25 (12%) | 11 (10%) | 14 (15%) | 0.31 |
Hemiarch replacement | 60 (29%) | 60 (55%) | ||
Total arch replacement | 12 (6%) | 12 (11%) | ||
Coronary artery bypass grafting | 19 (9%) | 11 (10%) | 8 (9%) | 0.68 |
CPB time (min ± SD) | 185 ± 85 | 224 ± 86 | 142 ± 58 | <0.001 |
Cross-clamp time (min ± SD) | 103 ± 39 | 109 ± 43 | 95 ± 34 | 0.015 |
HCA: hypothermic circulatory arrest; SD: standard deviation; CPB: cardiopulmonary bypass.
Data available in 199 patients (107 open distal; 92 closed distal).
Data available in 199 patients (106 open distal; 93 closed distal).
Two patients underwent David reimplantantion procedure (one open distal, one closed distal).