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Grading of post-pancreatectomy hemorrhage (International Study Group of Pancreatic Surgery)
| Time of onset | Early | ≤24 h after operation |
| Late | >24 h after operation | |
| Location | Intraluminal | Gastrointestinal bleeding representing as hematemesis, melena or bleeding from nasogastric tube |
| Extraluminal | Intraperitoneal or bleeding from surgical drains | |
| Severity | Mild | The level of hemoglobin drop is ≤ 3 g dl−1 |
| Severe | The level of hemoglobin drop is > 3 g dl−1 |
