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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
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Journal of Cardiothoracic Surgery

ISSN: 1749-8090

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