Table 4.
Imaging characteristics of type A aortic dissections presenting with lower-extremity malperfusion compared between those undergoing no revascularization and those undergoing revascularization
| Variable | No lower-extremity revascularization (n = 70) | Lower-extremity revascularization (n = 15) | P value |
|---|---|---|---|
| Primary tear location | .40 | ||
| Noncoronary sinus | 14 (20.00) | 0 (0.00) | |
| Left coronary sinus | 2 (2.86) | 0 (0.00) | |
| Right coronary sinus | 2 (2.86) | 1 (6.67) | |
| Sinotubular junction | 15 (21.43) | 2 (13.33) | |
| Ascending aorta | 27 (38.57) | 8 (53.33) | |
| Aortic arch | 8 (11.43) | 3 (20.00) | |
| Secondary arch tear | 17 (24.29) | 4 (26.67) | .85 |
| Left main coronary artery | 0 (0.00) | 0 (0.00) | 1.00 |
| Right main coronary artery | 2 (2.86) | 0 (0.00) | 1.00 |
| Concomitant coronary artery bypass graft | 6 (8.57) | 3 (20.00) | .19 |
| Extent of residual type B dissection | .39 | ||
| 0 | 24 (48.0) | 6 (46.15) | |
| 1 (Descending thoracic aorta) | 2 (4.0) | 1 (7.69) | |
| 2 (Mesenteric) | 0 (0.0) | 1 (7.69) | |
| 3 (Infrarenal) | 2 (4.0) | 0 (0.0) | |
| 4 (Iliac) | 22 (44.0) | 5 (38.5) | |
| Missing | 20 | 2 | |
| Partial/complete thrombosis of iliac artery (missing) | 19 (35.2) 16 | 6 (75.0) 7 | .03 |
| False lumen diameter greater than true lumen (missing) | 46 (85.2) 16 | 8 (100) 7 | .24 |
| True lumen collapsed at level of paravisceral aorta (missing) | 5 (9.6) 18 | 2 (25.0) 7 | .23 |
| Complete true lumen collapse/compression (missing) | 6 (11.5) 18 | 7 (12.5) 7 | 1.00 |
| False lumen patent (missing) | 46 (85.2) 16 | 8 (100) 7 | .58 |
| False lumen partially thrombosed (missing) | 17 (30.9) 15 | 6 (75.0) 7 | .04 |
| Pericardial effusion | 6 (8.6) | 2 (13.3) | .63 |