Table 1 Descriptive statistics
From: Blood loss quantification during major abdominal surgery: prospective observational cohort study
Age (yrs), mean (range) | 66.7 (27–89) |
|---|---|
Gender | |
Male, frequency (%) | 29 (47.5%) |
Female, frequency (%) | 32 (52.5%) |
Total, frequency (%) | 61 (100%) |
Height (cm), mean (SD) | 170.9 (8.92) |
Weight (kg), mean (SD) | 78.2 (15.67) |
BMI (kg/m2), mean (SD) | 26.7 (4.59) |
ASA physical status classification, frequency (%) | |
1 | 12 (19.7%) |
2 | 32 (52.5%) |
3 | 17 (27.8%) |
Estimated blood volume (mL) (ICSH formula), median (IQR) | 4548 (3974–5359) |
Surgical intervention, frequency (%) | |
Proximal pancreatectomy | 22 (36.1%) |
Distal pancreatectomy | 7 (11.4%) |
Minor liver resections | 22 (36.1%) |
Major liver resections | 5 (8.2%) |
Other procedures | 5 (8.2%) |
Operative time (min), mean (SD) | 200.9 (73.79) |
Peroperative | |
Catecholamines use, yes/no, n | 31/30 |
Blood transfusion, yes/no, n | 3/58 |
Infusions (ml), median (IQR) | 2400 (1600–350) |
Diuresis (ml), median (IQR) | 400 (200–775) |
Participants’ perioperative hemoglobin concentrations | |
Preoperative hemoglobin level (g/L), mean (SD) | 117.4 (19.19) |
Postoperative minimal hemoglobin level (g/L), mean (SD) | 92.9 (14.11) |
Hospital stay (days), median (IQR) | 11 (7–15) |
Outcome data from suction and surgical drapes | |
Suction volume (mL), median (IQR) | 450 (275–700) |
Suction weight (g), median (IQR) | 709 (543–982) |
Suction hemoglobin level (g/dL), median (IQR) | 34 (18–39) |
Surgical drapes weight (g), median (IQR) | 1448 (991–1774) |
Number of surgical drapes used, median (IQR) | 20 (14–30) |
Blood loss according used method | |
Spectrophotometric measurement (vMBL) (ml), median (IQR) | 251 (109–411) |
Estimated blood loss by surgeon (sEBL) (ml), median (IQR) | 300 (200–500) |
Estimated blood loss by anestesiologist (aEBL) (ml), median (IQR) | 400 (225–700) |
Calculation method (vCBL) (ml), mean (SD) | 995 (602.2) |
Gravimetric method (vGBL) (ml), median | 1298 (822–1728) |