Table 1.

Clinical classification of chronic IF

IV energy supplementation, kcal/kg body weight	Volume of the IV supplementation, mL
	≤1,000	1,001–2,000	2,001–3,000	>3,000
A: 0	A1	A2	A3	A4
B: 1–10	B1	B2	B3	B4
C: 11–20	C1	C2	C3	C4
D: >20	D1	D2	D3	D4

IF, intestinal failure; IV, intravenous.