Table 3.
Time-dependent changes of true lumen (TL) area, aortic lumen (AL) area, and TL area/AL area ratio (TLR)
| Variable | Preoperative (n = 196) | Postoperative (n = 182) | 6 mo (n = 149) | 1 y (n = 109) | 2 y (n = 71) | P value∗ |
|---|---|---|---|---|---|---|
| Level A | ||||||
| TL area (mm2) | 364.2 (208.5) | 508.9 (155.0) | 586.9 (146.4) | 601.9 (159.9) | 645.5 (150.4) | <.001 |
| AL area (mm2) | 776.9 (186.3) | 743.9 (237.2) | 646.7 (181.0) | 670.6 (201.8) | 688.6 (214.8) | <.001 |
| TLR (%) | 50.1 (34.4) | 73.1 (23.1) | 93.9 (18.4) | 93.5 (19.5) | 96.3 (12.8) | <.001 |
| Level B | ||||||
| TL area (mm2) | 350.2 (228.8) | 449.2 (203.7) | 526.9 (193.8) | 536.6 (190.7) | 573.9 (198.0) | <.001 |
| AL area (mm2) | 739.5 (201.9) | 772.2 (260.6) | 699.3 (258.1) | 685.6 (266.2) | 665.4 (260.5) | .06 |
| TLR (%) | 48.7 (28.8) | 63.5 (29.3) | 82.7 (29.1) | 85.8 (27.0) | 90.9 (21.8) | <.001 |
| Level C | ||||||
| TL area (mm2) | 309.2 (189.0) | 342.6 (174.0) | 365.6 (147.5) | 376.2 (142.3) | 400.7 (130.3) | <.001 |
| AL area (mm2) | 586.0 (208.5) | 603.8 (259.0) | 600.1 (189.0) | 610.3 (200.5) | 628.0 (221.0) | .31 |
| TLR (%) | 56.1 (31.5) | 62.5 (32.1) | 68.5 (33.0) | 70.2 (33.0) | 73.3 (31.6) | <.001 |
| Level D | ||||||
| TL area (mm2) | 206.4 (138.4) | 218.0 (130.1) | 220.7 (114.9) | 215.8 (104.2) | 229.97 (117.09) | .50 |
| AL area (mm2) | 321.7 (126.1) | 324.3 (131.5) | 323.5 (127.8) | 332.2 (146.0) | 360.41 (166.20) | .52 |
| TLR (%) | 67.2 (33.7) | 71.0 (30.4) | 74.1 (31.4) | 73.5 (32.1) | 72.50 (32.23) | .09 |
Values are presented as mean (SD).
∗
Preoperative versus 1 year.