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International Study Group of Pancreatic Surgery classification scheme for delayed gastric emptying
| Characteristic | Grade A | Grade B | Grade C |
|---|---|---|---|
| Nasogastric tube required | 4–7 d or reinsertion after postoperative day (POD) 3 | 8–14 d or reinsertion after POD 7 | >14 d or reinsertion after POD 14 |
| Unable to tolerate food at: | POD 7 | POD 14 | POD 21 |
| Gastric distention/vomiting | Yes | Yes | Yes |
| Use of prokinetics | Yes | Yes | Yes |
