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Table 4 Anatomic variables of study cohort

From: A novel anatomic severity grading score for acute Type B aortic dissections and correlation to aortic reinterventions after thoracic endovascular aortic repair

Variable group Variablea Low ASG mean ± SD High ASG mean ± SD All subjects mean ± SD P-valuec
Proximal Landing Zone Whole lumen cross-sectional area contour change (CC1) 285 ± 139 824 ± 405 429 ± 335 0.007
Maximum whole lumen cross-sectional area (mCSA1) 935 ± 189 1546 ± 300 1097 ± 351 0.0004
Left common carotid to left subclavian distance (L1) 16.2 ± 5.5 12.9 ± 3.9 15.3 ± 5.3 0.17
Left common carotid to entry tear distance (L2) 79.3 ± 68.3 27.6 ± 13.7 65.9 ± 63.1 0.21
Thrombusb 6.3 ± 2.1 10.1 ± 6.7 7.3 ± 4.0 0.15
Calcificationb 2.2 ± 0.9 2.0 ± 1.1 2.2 ± 1.0 0.56
Total unthrombosed lumenb 23.7 ± 8.3 28.3 ± 14.4 24.9 ± 10.2 0.42
Curvature and Tortuosity Center lumen line from left common carotid artery to superior mensenteric artery 301 ± 27.8 304 ± 25.1 302 ± 26.6 0.84
Straight Line from left common carotid artery to superior mensenteric artery 225 ± 18.1 244 ± 19.4 230 ± 19.9 0.040
Intraaortic Distance (ID) 24.7 ± 5.3 25.4 ± 4.5 24.9 ± 5.0 0.72
Left common carotid diameter 15.5 ± 27.1 12.0 ± 6.3 14.6 ± 23.3 0.58
Vertical distance from the origin of the innominate artery to the top of the arch (Inn-Top) 24.6 ± 11.4 22.6 ± 11.5 24.0 ± 11.2 0.68
Dissection True lumen diameter 20 mm distal to LSA 28.7 ± 5.1 27.6 ± 2.0 28.4 ± 4.4 0.42
False lumen diameter 20 mm distal to LSA 28.4 ± 13.3 45.9 ± 4.7 33.1 ± 14.0 0.00001
False lumen cross sectional area 20 mm distal to LSA 382 ± 225 1138 ± 392 583 ± 435 0.0007
True lumen cross sectional area 20 mm distal to LSA 477 ± 257 344 ± 149 442 ± 239 0.093
False lumen length (FLL) 306 ± 97 384 ± 90 327 ± 100 0.058
Tear length 12.0 ± 6.8 18.8 ± 7.3 13.8 ± 7.4 0.058
Number of observable tears 1.14 ± 0.71 2.00 ± 1.7 1.37 ± 1.1 0.20
Tear circumferential location subscore 0.68 ± 0.48 0.75 ± 0.46 0.7 ± 0.47 0.73
Branch Vessels Branch vessel location subscore (BVL) 0.82 ± 1.1 1.6 ± 1.3 1.03 ± 1.2 0.14
Branch vessel patency subscore (BVP) 0.50 ± 0.67 0.63 ± 0.92 0.53 ± 0.73 0.73
Supraceliac Aorta Anatomy Whole lumen cross-sectional area contour change (CC2) 402 ± 157 527 ± 277 436 ± 199 0.26
Maximum whole lumen cross-sectional area (mCSA2) 777 ± 201 909 ± 370 812 ± 257 0.36
  1. aAll lengths are listed in millimeters, and all areas are listed in millimeters squared. Bolded P-values indicate P < 0.05
  2. bCentimeters cubed
  3. cBetween the low and high-score patient groups