Insulin Drip Discontinuation After Lantus Administration

Optimal Transition Protocol

The American Diabetes Association recommends administering subcutaneous Lantus 2 hours before discontinuing the intravenous insulin infusion to prevent rebound hyperglycemia 1
The transition should only occur when blood glucose levels have been stable for at least 24 hours and the patient is resuming oral feeding 2
Calculate the Lantus dose based on the insulin infusion rate during the last 6 hours when stable glycemic goals were achieved 1
A common approach is to use half of the total 24-hour IV insulin dose as the once-daily Lantus dose 2, 3

For patients requiring ≥5 U/hour, this suggests major insulin resistance and may warrant delaying transition or adjusting dosing 2
Lantus has a 1-hour onset of action with no peak effect, requiring a 2-hour overlap period to prevent a gap in insulin coverage 4

If the patient is eating, add ultra-rapid insulin analogue at the first meal, using the other half of the 24-hour IV insulin dose divided by 3 meals 2, 3
Administer prandial insulin immediately before meals, or after meals if oral intake is uncertain 1

For type 1 diabetes patients, basal insulin coverage is mandatory even when NPO to prevent diabetic ketoacidosis 1, 5
These patients require continuous basal insulin and cannot have any gap in coverage during the transition 1