Adjusting Omnipod Settings for Better Blood Sugar Control
For a patient with an average blood sugar of 212 mg/dL using Omnipod with basal rate 0.6 units/hour, ISF 85, and ICR 15, I recommend increasing the basal rate by 10-20% initially to 0.66-0.72 units/hour while maintaining the current ISF and ICR settings. 1
Assessment of Current Settings
- The average blood glucose of 212 mg/dL is significantly above the recommended target range of 70-180 mg/dL for most patients with diabetes 1
- Current settings appear inadequate to maintain glycemic control, as evidenced by the elevated average blood glucose 1
- With the current basal rate of 0.6 units/hour (14.4 units/day), insulin sensitivity factor (ISF) of 85, and insulin-to-carbohydrate ratio (ICR) of 15, adjustments are needed to improve glycemic control 1
Recommended Adjustments
Step 1: Adjust Basal Rate
- Increase basal insulin rate by 10-20% from 0.6 to 0.66-0.72 units/hour 1
- This adjustment should be made first as basal insulin provides the foundation for glycemic control 1
- Monitor fasting blood glucose for 2-3 days after adjustment to evaluate effectiveness 1
Step 2: If Needed, Adjust Insulin Sensitivity Factor (ISF)
- If average blood glucose remains elevated after basal adjustment, consider decreasing the ISF from 85 to 70-75 1
- A lower ISF value will deliver more insulin for correction boluses 1
- This should be adjusted only after evaluating the effect of basal rate changes 1
Step 3: Consider Insulin-to-Carbohydrate Ratio (ICR) Adjustment
- If postprandial glucose excursions remain high despite the above changes, decrease ICR from 15 to 12-13 1
- This will provide more insulin for meals while maintaining the adjusted basal rate 1
Monitoring and Follow-up
- Check blood glucose levels at least 4 times daily during adjustment period 1
- Pay special attention to fasting morning glucose and 2-hour postprandial values 1
- Evaluate patterns over 3-5 days before making additional adjustments 1
- Watch for hypoglycemia, especially during the night, which would indicate that adjustments are too aggressive 1
Important Considerations
- Automated insulin delivery systems like Omnipod require understanding which parameters can be adjusted to optimize insulin delivery 1
- The goal is to achieve a target glucose range of 70-180 mg/dL while minimizing hypoglycemia risk 1
- Basal insulin should be titrated to an acceptable fasting blood glucose level before making other adjustments 1
- For patients with persistent hyperglycemia despite basal adjustments, consider advancing to combination therapy or adjusting prandial insulin coverage 1
Potential Pitfalls to Avoid
- Avoid making multiple setting changes simultaneously, as this makes it difficult to determine which change was effective 1
- Do not increase basal rates too aggressively, as this can lead to overnight hypoglycemia 1
- Remember that insulin requirements may vary based on activity level, stress, illness, and other factors 1
- Be cautious about overbasalization (excessive basal insulin), which can lead to hypoglycemia and the need for additional carbohydrate intake 1
By following this systematic approach to adjusting Omnipod settings, you should be able to improve glycemic control and reduce the average blood glucose from 212 mg/dL toward the target range while minimizing the risk of hypoglycemia 1.