Table 1 Study group characteristics with and without arterial catheterization.
Total (n = 62,618) | Without A-line (n = 46,899) | With A-line (n = 15,719) | P-value | |
|---|---|---|---|---|
Demographic data | ||||
Age, years | 54.7 ± 15.9 | 52.7 ± 15.8 | 59.9 ± 14.3 | < 0.001 |
Sex, female | 36,737 (58.7%) | 29,753 (63.4%) | 6984 (44.4%) | < 0.001 |
Body-mass index, kg/m2 | 24.1 ± 3.8 | 24.2 ± 3.8 | 24.2 ± 3.7 | 0.093 |
Preoperative laboratory results | ||||
White blood cell, 103/μL | 6.8 ± 2.6 | 6.5 ± 2.2 | 6.8 ± 2.4 | < 0.001 |
Hemoglobin, g/dL | 12.7 ± 1.9 | 12.9 ± 1.7 | 12.5 ± 1.9 | < 0.001 |
Platelet, 103/μL | 242.5 ± 75.0 | 245.8 ± 68.9 | 239.2 ± 77.7 | < 0.001 |
Sodium, mmol/L | 139.8 ± 2.6 | 140.1 ± 2.3 | 140.0 ± 2.5 | < 0.001 |
Potassium, mmol/L | 4.3 ± 0.4 | 4.2 ± 0.3 | 4.3 ± 0.3 | < 0.001 |
Chloride, mmol/L | 103.7 ± 3.0 | 103.9 ± 2.6 | 103.6 ± 2.9 | < 0.001 |
Calcium, mg/dL | 9.2 ± 0.5 | 9.3 ± 0.4 | 9.2 ± 0.5 | < 0.001 |
BUN, mg/dL | 16.2 ± 10.7 | 14.5 ± 6.1 | 16.2 ± 7.6 | < 0.001 |
Creatinine, mg/dL | 1.0 ± 1.3 | 0.8 ± 0.6 | 0.9 ± 0.8 | < 0.001 |
Albumin, g/dL | 3.7 ± 0.5 | 3.8 ± 0.4 | 3.7 ± 0.5 | < 0.001 |
AST, IU/L | 25.2 ± 29.9 | 23.9 ± 19.9 | 26.9 ± 29.2 | < 0.001 |
ALT, IU/L | 22.7 ± 31.6 | 21.7 ± 29.1 | 25.2 ± 35.3 | < 0.001 |
Glucose, mg/dL | 114.9 ± 38.7 | 110.9 ± 34.5 | 121.7 ± 42.2 | < 0.001 |
PT, INR | 1.0 ± 0.1 | 1.0 ± 0.1 | 1.0 ± 0.1 | < 0.001 |
aPTT, s | 27.5 ± 3.7 | 27.2 ± 2.8 | 27.5 ± 3.8 | < 0.001 |
Type of anesthesia, n | ||||
General anesthesia | 48,871 (78.0%) | 33,226 (70.8%) | 15,645 (99.5%) | < 0.001 |
Neuro-axial anesthesia | 2558 (4.1%) | 2474 (5.3%) | 84 (0.5%) | < 0.001 |
MAC | 1459 (2.3%) | 1378 (2.9%) | 81 (0.5%) | < 0.001 |
Regional anesthesia | 274 (0.4%) | 269 (0.6%) | 5 (0.03%) | < 0.001 |
Emergency surgery, n | 5662 (9.0%) | 5594 (11.9%) | 68 (0.4%) | < 0.001 |
Central venous catheterization, n | 4,365 (7.0%) | 17 (0.04%) | 4348 (27.0%) | < 0.001 |
