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Insulin loss at the injection site in children with type 1 diabetes mellitus
1Department of Paediatrics, Christchurch School of Medicine, Christchurch Hospital, New Zealand.
Insights
A new filter paper method shows insulin loss at injection sites is common in children with type 1 diabetes mellitus. This frequent insulin loss, though usually small, can impact blood glucose control.
Area of Science:
- Pediatrics
- Endocrinology
- Diabetes Management
Background:
- Type 1 diabetes mellitus requires careful insulin management.
- Accurate insulin delivery is crucial for glycemic control.
- Potential for insulin loss at the injection site is not well quantified.
Purpose of the Study:
- To describe a simple filter paper technique for measuring insulin loss.
- To quantify insulin loss at the injection site in children with type 1 diabetes.
- To assess the frequency and amount of insulin loss during subcutaneous injections.
Main Methods:
- Development of a filter paper technique to detect and measure fluid at injection sites.
- Application of the technique in a cohort of 19 children over a 7-day period.
- Observation of injections administered by both children and parents.
Main Results:
- Measurable fluid (insulin loss) was present at the injection site in 68% of children at least once.
- Insulin loss occurred following 23% of all injections administered.
- In most cases, insulin loss was <1 unit, but could reach 2 units or more (up to 18% of the dose).
- No significant relationship was found between insulin dose and the amount of insulin loss.
Conclusions:
- Insulin loss at the injection site is a frequent occurrence in children with type 1 diabetes.
- Even small amounts of insulin loss can contribute to blood glucose variability.
- The developed filter paper technique provides a simple method to assess this phenomenon.
Abstract:
A simple filter paper technique is described for demonstrating and measuring insulin loss at the injection site in children with type 1 diabetes mellitus. Using this technique in a cohort of 19 children during a 7-day period, measurable fluid was demonstrated at the injection site in 68% of children at least once and was present following 23% of all injections. In nearly 80% of cases the insulin loss probably represented less than 1 unit but could on occasions be 2 units or more or up to 18% of the injected dose. Insulin losses were observed following injections given by children themselves and by parents. There was no significant relationship between insulin dose and insulin loss. Insulin losses at the injection site are frequent and, although usually small in amount, are a potential source of blood glucose variability.