Variables | All patients (n = 1862) |
---|---|
Age (year) | 63.1 (19–91) |
Male sex | 1088 (58.4%) |
Body mass index (kg/m2) | 23.4 (3.5) |
Category of surgical procedures | |
Stomach | 492 (26.4%) |
Colorectal | 719 (38.6%) |
Hepatic | 154 (8.3%) |
Biliary-pancreas | 497 (26.7%) |
Type of anesthesia | |
Total intravenous anesthesia | 865 (46.5%) |
Volatile agent | 997 (53.5%) |
Duration of anesthesia (min) | 196.6 (104.4) |
BIS derived variables | |
bis40_dur (min) | 70.5 (73.2) |
bis40_5min | 1701 (91.4%) |
bis20_dur (min) | 0.5 (4.2) |
bis20_5min | 35 (1.9%) |
eegsup_dur (min) | 1.6 (6.6) |
eegsup_5min | 134 (7.2%) |
bis40map50_dur (min) | 0.34 (0.92) |
bis20map50_dur (min) | 0.01 (0.11) |
map50_dur (min) | 0.8 (1.7) |
Past medical history | |
Aortic stenosis | 10 (0.5%) |
Congestive heart failure | 6 (0.3%) |
Coronary artery disease | 98 (5.3%) |
Hypertension | 706 (37.9%) |
Peripheral vascular occlusive disease | 6 (0.3%) |
Dysrhythmia | 61 (3.3%) |
Chronic obstructive pulmonary disease | 46 (2.5%) |
Pulmonary hypertension | 7 (0.4%) |
Stroke | 70 (3.8%) |
Malignancy | 1368 (73.5%) |
Diabetes | 398 (21.4%) |
Sleep apnea | 3 (0.2%) |
Social history | |
Current smoker | 255 (13.7%) |
Regular alcohol ingestion | 449 (24.1%) |
ASA classification | |
I | 456 (24.5%) |
II | 1181 (63.4%) |
III | 221 (11.9%) |
IV | 4 (0.2%) |
Laboratory tests | |
Hemoglobin (g/dL) | 10.5 (3.7) |
Albumin (g/dL) | 3.7 (1.0) |