Table 4.

Scheme for injection of rapid-acting insulin for patients receiving parenteral nutrition (meal insulin, assuming oral or enteral intake of about 20 g carbohydrate and normal insulin sensitivity).

Preprandial blood glucose		Subcutaneous insulin [IU]
[mmol/L]	[mg/dL]
6.0-7.9	108-143	2
8.0-9.9	144-179	4
10.0-11.9	180-215	6
12.0-13.9	216-251	8
14.0-15.9	252-187	10
16.0-17.9	288-323	12
≥19.0		14

This scheme is a rule of thumb, based only on preprandial blood glucose. The insulin dose must be adapted quickly depending on the blood glucose course and diet.