Table 2.
Comparison between Patients with or without History of Obesity Surgery
| Patients with History of Obesity Surgery (n = 171) |
Patients without History of Obesity Surgery (n = 301) |
P | |
|---|---|---|---|
| Blood loss intraoperatively in mL (mean ± SD) | 162.2 ± 81.5 | 132.1 ± 57.6 | 0.001 |
| Drain output first 24 h (mL) (median, range) | 155 (10–2250) | 135 (15–1150) | 0.001 |
| Total drain output (mL) (median, range) | 300 (20–3700) | 220 (4–2000) | 0.001 |
| Re-exploration surgery for hematoma | 8 (4.7%) | 5 (1.7%) | 0.05 |
| Hemoglobin drop at postoperative day 1 (mean ± SD) | 1.79 ± 1.42 | 1.52 ± 1.20 | 0.08 |
| Hemoglobin drop at discharge (mean ± SD) | 1.99 ± 1.42 | 1.66 ± 1.20 | 0.09 |
| Units of blood transfusion (mean ± SD) | 2.3 ± 1.0 | 1.9 ± 0.4 | 0.25 |
| Fresh frozen plasma units (mean ± SD) | 3.6 ± 1.7 | 3.0 ± 1.1 | 0.56 |
| Days of bloody drain (median, range) | 1 (1–9) | 1 (1–12) | 0.61 |
| Length of stay (median, range) | 4 (1–17) | 4 (1–16) | 0.50 |
| Readmission rate due to bleeding complications | 0 (0.0%) | 1 (0.3%) | 0.45 |