Table 1.
Functional and clinical classifications for intestinal failure
| Functional classification | ||||
|---|---|---|---|---|
| Type I | Acute, short-term, and often self-limiting, as for patients after abdominal surgery requiring intravenous support for a few days | |||
| Type II | Prolonged, often in metabolically unstable patients, usually with enteric fistulas, requiring multidisciplinary care and intravenous supplementation during weeks or months | |||
| Type III | Chronic, in metabolically stable patients, requiring intravenous supplementation over months or years (reversible or irreversible) | |||
| Clinical classification | |||||
|---|---|---|---|---|---|
| Volume of intravenous supplementation per week, mL | |||||
| <1,000 | 1,001–2,000 | 2,001–3,000 | >3,000 | ||
| Intravenous energy supplementation per week, kcal/kg | |||||
| 0 (A) | A1 | A2 | A3 | A4 | |
| 1–10 (B) | B1 | B2 | B3 | B4 | |
| 11–20 (C) | C1 | C2 | C3 | C4 | |
| >20 (D) | D1 | D2 | D3 | D4 | |