| Characteristic | N = 54 |
| Median age [range] in months | 15.5 [0 - 172] |
| Median weight [range] in kilograms | 6.4 [1.4 - 42] |
| ASA I n (%) | 4 (7.4) |
| ASA II n (%) | 24 (44.4) |
| ASA III n (%) | 22 (40.7) |
| ASA IV n (%) | 4 (7.4) |
| Emergency surgery n (%) | 32 (59.3) |
| Elective surgery n (%) | 22 (40.7) |
| Re-operation n (%) | 6 (11.1) |
| Patients with intra-operative and or postoperative complications (organ failure or sepsis) n (%) | 14 (25.9) |
| Intraoperative hemorrhagic shock n (%) | 2 (3.7) |
| Postoperative cardio-circulatory failure n (%) | 2 (3.7) |
| Postoperative respiratory failure n (%) | 3 (5.6) |
| Postoperative multiple organ failure n (%) | 1 (1.8) |
| Postoperative neurologic failure n (%) | 1 (1.8) |
| Postoperative abdominal sepsis n (%) | 3 (5.6) |
| Postoperative multiple organ sepsis n (%) | 1 (1.8) |
| Postoperative neuro-meningeal sepsis n (%) | 1 (1.8) |
| Postoperative pulmonary sepsis n (%) | 4 (7.4) |
| Postoperative septicemia n (%) | 2 (3.7) |
| In-hospital mortality n (%) | 2 (3.7) |
| Transfusion n (%) | 17 (31.5) |
| Median packed red blood cells volume in ml [range] | 0 [0 - 5] |
| Median fresh frozen plasma volume in ml [range] | 0 [0 - 2] |
| Median concentrated platelet units [range] | 0 [0 - 2] |
| Mean preoperative hemoglobin levels ± standard deviation in g/dl | 12.6 ± 3.3 |
| Mean postoperative hemoglobin levels ± standard deviation in g/dl | 11.3 ± 1.9 |
| Median crystalloid volume in ml [range] | 1287.5 [60 - 3100] |
| Median colloid volume in ml [range] | 0 [0 - 1000] |
| Median length of intensive care unit stay in days [range] | 5 [0 - 77] |
| Median length of hospital stay in days [range] | 7 [0 - 101] |
| Median total length of hospital stay in days [range] | 15 [4 - 178] |
| Median total length of mechanical ventilation in days [range] | 0 [0 - 28] |