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Table 4 Arterial calcification score and the number of collateral arteries

From: Risk factors for spinal cord ischemia in frozen elephant trunk–induced upper spinal cord ischemia in patients with combination of degenerative arch aneurysms and peripheral artery diseases: a possible mechanism

Variables SCI
(n=2)
Patient A, B
No-SCI
(n=12)
Arterial calcification score
 Right SCA 1, 1 0.36±0.55 [0–2]
 Left SCA 0, 1 0.68±0.67 [0–2]
 Bilateral SCA 1, 2 1.04±1.05 [0–3]
 Right HA 2, 1 1.48±0.94 [0–3]
 Left HA 4, 1 1.56±1.13 [0–4]
 Bilateral HA 6, 2 3.04±1.96 [0–6]
No. of collateral branches from HAs (range)
 Right side 28, 45 16.5±4.4 [11–25]
 Left side 38, 21 14.1±3.6 [10–23)
 Total 66, 66 30.7±7.5 [21–47]
No. of patent SAs
 Intercostal arteries (Th8–L2) 6, 6 6.0±0.0 [6]
 Lumber arteries (L1–L5) 4, 5 3.66±1.97 [0–5]
  1. The number of collateral branches of the hypogastric artery was greater in the SCI group than in the no-SCI group. There was no difference in the arterial calcification scores and the number of patent segmental arteries
  2. Continuous data were presented as mean and standard deviation and categorical variables as numbers and percentages. The actual data for the two patients with spinal cord ischemia were presented
  3. SCI spinal cord ischemia, SCA subclavian artery, HA hypogastric artery (internal iliac artery), SA segmental artery, NA not assessed