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Table 1 Characteristics of the study patients between AKI and No-AKI

From: Body mass index is an independent predictor of acute kidney injury after urgent aortic arch surgery for acute DeBakey Type I aortic dissection

Variable No-AKI (n = 54) AKI (n = 61) P-value
Age 46.8 ± 11.0 48.7 ± 10.4 0.342
Sex    0.486
 Male 42 (77.8%) 44 (72.1%)  
 Female 12 (22.2%) 17 (27.9%)  
BMI (kg/m2) 25.0 ± 3.8 27.2 ± 3.7 0.002
Diabetes mellitus 1 (1.9%) 6 (9.8%) 0.074
Hypertension 42 (77.8%) 50 (82.0%) 0.575
Previous cerebrovascular disease 4 (7.4%) 2 (3.3%) 0.320
Coronary artery disease 3 (5.6%) 3 (4.9%) 0.878
Smoking history 22 (40.7%) 34 (55.7%) 0.108
Drinking history 11 (20.4%) 12 (19.7%) 0.926
Time from onset to treatment(h) 60 (24–138) 24 (20–48) 0.005
Renal artery dissection 10 (18.5%) 7 (11.5%) 0.288
Hemopericardium 9 (16.7%) 10 (16.4%) 0.969
Penn class    0.665
 Class Aa 34 (63.0%) 36 (59.0%)  
 Non class Aa 20 (37.0%) 25 (41.0%)  
Kindey malperfusion 3 (5.6%) 4 (6.6%) 0.823
AMI 2 (3.7%) 7 (11.5%) 0.121
Preoperative shock 9 (16.7%) 10 (16.4%) 0.969
Preoperative sCr (umol/L) 82.0 ± 30.0 90.0 ± 27.9 0.141
BUN (mmol/L) 7.1 ± 2.7 7.3 ± 2.4 0.724
Hemoglobin (g/L) 137.2 ± 18.6 135.9 ± 16.3 0.689
Hematocrit (%) 39.7 ± 5.0 39.1 ± 4.2 0.443
eGFR mL/(min·1.73 m2) 94.2 ± 21.2 83.5 ± 22.8 0.011
CPB time (min) 199.1 ± 45.6 222.0 ± 62.0 0.027
Aortic cross clamp time (min) 120.2 ± 49.0 127.0 ± 36.1 0.400
Circulatory arrest time (min) 27.4 ± 9.6 27.5 ± 7.6 0.914
Operation time (h) 23.1 ± 1.6 22.7 ± 1.5 0.142
Nasopharyngeal temperature at circulatory arrest (°C) 25.5 ± 2.3 25.1 ± 2.0 0.358
Rectal temperature at circulatory arrest (°C) 27.9 ± 1.6 28.8 ± 2.0 0.007
Intraoperative amount of PRBCs (mL) 300.0 (0.0–600.0) 600.0 (0.0–600.0) 0.043
Intraoperative blood loss (mL) 1300.0 (1000.0–1575.0) 1500.0 (1200.0–2000.0) 0.024
Intraoperative amount of plasma (mL) 400.0 (0.0–550.0) 400.0 (0.0–800.0) 0.102
Combined with CABG 3 (5.6%) 5 (8.2%) 0.578
Combined with aortic bypass surgery 0 (0.0%) 1 (1.6%) 0.345
Bentall+TAR+FET 22 (40.7%) 25 (41.0%) 0.979
Respiratory failure 2 (3.70%) 18 (29.51%) < 0.001
Length of ICU 1.9 (1.0–3.0) 4.0 (2.0–9.0) < 0.001
Length of in hospital 1 (1.9%) 8 (13.1%) 0.025
Reoperation for bleeding 1 (1.9%) 8 (13.1%) 0.025
In-hospital mortality 1 (1.9%) 8 (13.1%) 0.025
  1. Bold value indicates significance at p < 0.05. Results are expressed as n (%) or mean ± SD or median [IQR]
  2. AKI Acute Kidney Injury, AMI Acute Myocardial Infarction, BMI Body Mass Index, BUN Blood Urea Nitrogen, CPB Cardiopulmonary Bypass, CABG Coronary Artery Bypass Grafting, eGFR estimated Glomerular Filtration Rate, FET Frozen Elephant Trunk, ICU Intensive Care Unit, PRBCs Packed Red Blood Cells, sCr serum Creatinine, SD Standard Deviation, TAR Total Arch Replacement, IQR Interquartile Range