How do I suspend the basal insulin delivery on an Omnipod by setting a temporary basal of 0 units for a patient who has taken insulin glargine (Lantus)?

How to Suspend Basal Insulin on Omnipod After Taking Lantus

To suspend basal insulin delivery on your Omnipod, set a temporary basal rate of 0 units/hour for the desired duration using the pump's temporary basal feature. This is a standard function available on Omnipod systems that allows you to completely halt automated insulin delivery.

Critical Safety Consideration

You must understand that your patient has overlapping insulin coverage from the Lantus (insulin glargine) they already took. Lantus provides basal insulin coverage for approximately 24 hours 11, so suspending the Omnipod basal is appropriate to prevent insulin stacking and hypoglycemia. The Lantus will continue providing background insulin even with the pump suspended.

Step-by-Step Approach

Immediate Action

• Access the Omnipod controller/PDM (Personal Diabetes Manager)
• Navigate to the temporary basal rate menu
• Set the rate to 0 units/hour
• Set the duration based on when the Lantus was administered (typically needs to be suspended for the full duration until Lantus wears off, which could be 24+ hours)

Key Technical Points

The Omnipod system allows complete suspension of basal delivery through the temporary basal feature 23. When you set a 0 unit/hour temporary basal:

• All automated basal insulin delivery stops
• The pump will not deliver any background insulin during this period
• Manual boluses can still be given if needed for meals or corrections
• The system will alert when the temporary basal period ends

Critical Monitoring Requirements

Monitor blood glucose levels closely during this transition period 11. The overlapping action of Lantus with any residual pump insulin creates hypoglycemia risk initially, followed by potential hyperglycemia if the temporary basal duration is set incorrectly.

• Check glucose every 2-4 hours initially
• Be prepared to give correction boluses manually if glucose rises
• Have fast-acting carbohydrates available for hypoglycemia

Common Pitfalls to Avoid

1. Not updating manual mode settings: If the pump reverts to manual mode for any reason (system malfunction, pod change), the preprogrammed basal rates will resume 3. These settings may not reflect current needs with Lantus on board, creating dangerous insulin stacking.

2. Incorrect duration calculation: Lantus has a duration of action exceeding 24 hours in many patients 14. Setting too short a suspension period will result in insulin stacking when pump basal resumes.

3. Forgetting about insulin on board (IOB): The pump's IOB display may not accurately reflect the Lantus that was administered separately 5. You must manually account for the long-acting insulin when making dosing decisions.

When to Resume Normal Pump Function

Resume normal basal rates only after the Lantus has substantially cleared (typically 24-30 hours after injection) 14. Consider:

• Starting with a reduced basal rate initially (50-75% of normal)
• Gradually increasing back to full basal rates over 6-12 hours
• Monitoring glucose trends closely during the transition

Alternative Consideration

In automated insulin delivery (AID) mode, the system can modulate or pause insulin delivery automatically 23, but this assumes the algorithm knows about all insulin on board. Since the Lantus was given outside the system, manual suspension via temporary basal is the safer approach to prevent the AID algorithm from delivering additional insulin on top of the Lantus.