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Table 1 Patient demography and perioperative data

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 All
(n=27)
SCI
(n=2)
Patient A, B
No -SCI
(n=25)
Demography
 Age (year) 69.8±7.7 82, 81 68.9±7.2 [44–81]
 Sex (men, %) 20 (74.1) 2 (100.0) 18 (72.0)
 BMI (kg/m2) 24.8±3.8 24.8, 28.9 24.6±3.9 [17–33]
 Hypertension (n, %) 27 (100) 2 (100) 25 (100)
 Diabetes mellitus (n, %) 4 (14.8) 1 (50.0) 3 (12.0)
 Dyslipidemia or statin use (n, %) 7 (25.9) 0 (0.0) 7 (28.0)
 eGFR (ml/min) 58.9±21.2 45.7, 43.4 60.0±21.6 [5.3–97.5]
 eGFR < 50 (n, %) 10 (37.0) 2 (100) 8 (32.0)
 Prior AAA repair 3 (11.1) 0 (0.0) 3 (12.0)
 Ischemic heart disease 6 (22.2) 0 (0.0) 6 (24.0)
 Cerebrovascular disease 6 (22.2) 1 (50.0) 5 (20.0)
 Malignancy 3 (11.1) 0 (0.0) 3 (25.0)
 Smoking 8 (29.6) 1 (50.0) 7 (28.0)
 Symptoms of LLI 2 (7.4) 2 (100) 0 (0.0)
Emergency case 7 (25.9) 0 (0.0) 7 (28.0)
Intraoperative data (min)
 Operative time 423±81 368, 471 523±83 [307–661]
 CPB time 182±37 166, 181 183.6±38.5 [125–279]
 AXC time 107±41 127, 105 106.4±43.4 [58–221]
 SCP time 91±17 74, 71 93.2±16.8 [67–140]
 CA time 49±14 51, 43 50.2±14.5 [27–78]
Information of FET
 FET diameter 32.4±3.6 33, 35 32.3±3.6 [22–39]
 FET length 116.6±18.8 120, 150 115.2±18.3 [90–150]
 level of FET distal end (Th) Th6.5±1.1 Th8, Th7 Th6.4±1.0 [Th4–Th8]
  1. The patients tended to be older in the SCI group than in the no-SCI group. The other preoperative data was not different between the two groups
  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, BMI body mass index, eGFR estimated glomerular filtration rate, LLI lower limb ischemia, CPB cardiopulmonary bypass, AXC aortic cross clamp, SCP selective cerebral perfusion, CA circulatory arrest, FET frozen elephant trunk, Th, thoracic vertebrate, NA not assessed