TABLE 1.
Indications of centimeter insertion of the catheter for the assumed intestinal regions, as found in research papers that described clinical trials applying intestinal catheters in human subjects1
| Intestinal region | Distance from the nose or mouth | Distance from the pylorus | Distance from the ligament of Treitz |
|---|---|---|---|
| Duodenum | 86 ± 5 cm (78) | 5 cm (24) | — |
| — | 5–10 cm (26) | — | |
| — | 12 cm (42) | — | |
| — | 13 cm (16) | — | |
| — | ∼15 cm (58, 60) | — | |
| Jejunum | 100 cm: proximal jejunum (33) | 20 cm (50) | ∼30 cm (2) |
| 167 cm (89) | 40–50 cm (24) | — | |
| — | 50 cm: first segment (96) | — | |
| — | 50 cm: proximal jejunum (43) | — | |
| — | 70 cm (42) | — | |
| — | ∼100 cm (26) | — | |
| — | 100 cm: “mid-jejunum” (60) | — | |
| Ileum | 160–180 cm (13) | ≥120 cm (14, 24, 77), | ≥120 cm (34) |
| ≥175–195 cm (35, 36) | ≥170 cm (58) | — | |
| 180 cm (66) | 190 cm (16) | — | |
| 186 ± 21 cm: terminal ileum (78) | — | — | |
| 214 cm: terminal ileum (89) | — | — | |
| 240–250 cm: terminal ileum (21) | — | — | |
| 260 ± 20 cm: terminal ileum (33) | — | — | |
| 300 cm (59) | — | — | |
| Colon | Ascending colon: 330 cm (33) | — | — |
1
The centimeter distances were often used in combination with fluoroscopy/X-ray to confirm the location.