Points of Gastrointestinal Tract Most Likely to Cause Delay
| Esophagus | Post cricoids, aortic arch, left main bronchus and diaphragm |
| Stomach | Pylorus |
| Duodenum | Junction of second and third portion and the terminal portion |
| Small intestine | Meckel’s diverticulum, ileo-cecal region |
| Large intestine | Flexures and haustration of large intestine and rectum |
| Anatomic abnormality | Diverticula, sacculation, annular pancreas, adhesions |