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Pump-Ins Action & BG

Before making any changes to insulin doses, it is important to understand the action of insulin (the onset, peak and duration of different types of insulin). Therefore, as background for the information that follows, we recommend you first review The Basics/Insulin Types & Action.


How Insulin Action Impacts Blood Glucose

Insulin is one of several factors that contributes to a given blood glucose reading at a certain moment in time. How insulin impacts blood glucose depends on the insulin action pattern of one of the three commonly used insulin programs:

1.  Conventional Insulin program

2.  Basal/Bolus Program with Multiple Daily Injections
 
3.  Insulin Pump Program



Remember, in the following text:

“rapid-acting” insulin refers to Humalog®, NovoRapid®, or Apidra®



Insulin Pump Program
[Continuous Subcutaneous Insulin Infusion (CSII) of Rapid-Acting Insulin only]


 Insulin Pump Insulin Action Graph

The insulin action diagram for a Pump program (above) shows that the blood glucose at a given time is affected by a certain previous insulin dose (follow the curve back) as follows:


Blood glucose before breakfast  tells you about  Overnight basal rates 
Blood glucose before lunch   tells you about
Morning basal rates + breakfast bolus
Blood glucose before supper   tells you about  Afternoon basal rates + lunch bolus 
Blood glucose at bedtime  tells you about  Evening basal rates + supper bolus  


For example, if the breakfast blood glucose is consistently out-of-range (high or low), you may want to change the overnight basal rates; if the supper blood glucose is consistently out-of-range (high or low) you may want to change the dose of lunch rapid-acting insulin and/or the afternoon basal rates.

 
For more information on how to make adjustments to insulin doses, see below for a list of other Level 2 and 3 BG Management articles which correspond to your child's Insulin Pump program:

Pump-What are Basals, Boluses and I:C's
Pump-Introduction to Insulin Adjustment
Pump-Reviewing the Record/Log Book
Pump-Adjusting Basal Rates
Pump-Adjusting Insulin:Carb Ratios
Pump-Adjusting the Insulin Sensitivity Factor
Pump-Duration of Insulin Action



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The above information was adapted with permission from The Alberta Children’s Hospital Diabetes Clinic information handouts.

The above information was reviewed for content accuracy by clinical staff of the Alberta Children’s Hospital Diabetes Clinic.

This material has been developed from sources that we believe are accurate, however, as the field of medicine (in particular as it applies to diabetes) is rapidly evolving, the information should not be relied upon, as it is designed for informational purposes only. It should not be used in place of medical advice, instruction and/or treatment. If you have specific questions, please consult your doctor or appropriate health care professional.


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