Table 3.
Comparison of clinical results for the acute versus chronic type B aortic dissection groups
| Chronic (n = 56) | Acute (n = 118) | P value | |
|---|---|---|---|
| Follow-up duration, years | 3.13 ± 2.39 | 2.76 ± 2.39 | 0.478 |
| Procedural success, n (%) | 56 (100.00) | 118 (100.00) | 1.000 |
| Intraprocedure, n (%) | |||
| Aortic rupture | 0 | 1 (0.8) | 1.000 |
| Needing surgical operation | 0 | 0 | NS |
| Inhospital overall events, n (%) | 6 (10.7) | 28 (23.7) | 0.064 |
| Overall death | 0 | 9 (7.6) | 0.059 |
| Procedure-related events, n (%) | 3 (5.4) | 22 (18.6) | 0.021 |
| Reverse dissection | 1 (1.8) | 1 (0.8) | 0.541 |
| Organ or peripheral artery malperfusion | 2 (3.6) | 13 (11.0) | 0.148 |
| Dissection rupture | 0 | 1 (0.8) | 1.000 |
| Type I leakage | 1 (1.8) | 14 (11.9) | 0.039 |
| LSCA occlusion leading to stroke | 0 | 2 (1.7) | 1.000 |
| Nonprocedure-related events, n (%) | 3 (5.4) | 12 (10.2) | 0.392 |
| Acute myocardial infarction | 0 | 1 (0.8) | 1.000 |
| Cancer | 0 | 0 | NS |
| Multiorgan failure | 0 | 3 (2.5) | 0.552 |
| Non-LSCA occlusion leading to stroke | 3 (5.4) | 7 (5.9) | 1.000 |
| Surgical operation for access site, n (%) | 1 (1.8) | 3 (2.5) | 1.000 |
| Renal failure, n (%) | 4 (7.1) | 18 (15.3) | 0.151 |
| Without needing dialysis | 3 (5.4) | 11 (9.3) | 0.553 |
| Needing CRRT | 1 (1.8) | 7 (5.9) | 0.439 |
| Reversible central complications, n (%) | 1 (1.8) | 10 (8.5) | 0.107 |
| Overall stroke, n (%) | 3 (5.4) | 9 (7.6) | 0.754 |
| Paraplegia, n (%) | 0 | 0 | NS |
| Deep vein thrombosis, n (%) | 1 (1.8) | 0 | 0.322 |
| Bleeding, n (%) | 2 (3.6) | 14 (11.9) | 0.095 |
| Needing transfusion | 1 (1.8) | 10 (8.5) | 0.107 |
| Fever, n (%) | 17 (30.4) | 32 (27.1) | 0.719 |
| Death by end of follow-up, n (%) | 2 (3.6) | 13 (11.0) | 0.148 |
| Aortic-related death | 2 (3.6) | 9 (7.6) | 0.506 |
| Change in diameter of true lumen, mm | |||
| Prior | 16.35 ± 10.26 | 18.32 ± 15.79 | 0.726 |
| Post | 24.70 ± 4.55 | 25.02 ± 4.78 | 0.805 |
| 1 month | 26.88 ± 5.21 | 27.20 ± 5.42 | 0.819 |
| 3 months | 27.34 ± 4.09 | 27.48 ± 6.05 | 0.867 |
| 6 months | 28.66 ± 5.67 | 28.97 ± 5.73 | 0.902 |
| Diameter of false lumen at stented segment, mm | |||
| Post | 20.11 ± 7.35 | 17.65 ± 7.08 | 0.702 |
| 1 month | 18.68 ± 5.43 | 13.48 ± 4.35 | 0.430 |
| 3 months | 17.35 ± 14.65 | 12.07 ± 10.77 | 0.047 |
| 6 months | 15.02 ± 15.63 | 12.37 ± 13.24 | 0.582 |
| Complete thrombosis, n (%) | 53 (94.6) | 108 (91.5) | 0.707 |
Abbreviations: LSCA, left subclavian artery; CRRT, continuous renal replacement therapy.