Table 2.
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 |