| Type of gastric reconstruction | Preservation of gastrointestinal continuity | Dumping | Malabsorption | Alkaline reflux |
| Billroth I | Duodenal, jejunal | Yes | No | Yes |
| Billroth II | Jejunal | Yes | Yes | Yes |
| Roux-en-Y | No | Yes | Yes | No |
| Jejunal interposition | Duodenal | Yes | No | No |
| Ileocecal interposition | Duodenal, jejunal | No | No | Yes |
