Insulin pump therapy is also known by the longer name of continuous subcutaneous insulin infusion (CSII). This longer name sums up what an insulin pump does - it continually infuses insulin into the subcutaneous tissue (the layer of tissue just beneath the skin).
This is a method for providing insulin to people with diabetes without the need for multiple daily injections (MDI). Insulin is delivered at any typical injection site (stomach, thigh, etc) through a tube and either a small needle or cannula inserted into the patient’s subcutaneous tissue (under the skin).
Patients specify an amount of background insulin to be delivered over a 24-hour period (basal rate) to keep glucose levels stable. After meals, patients issue a bolus dose of insulin to account for the amount of carbohydrates eaten.
Extensive evidence suggests that an insulin pump can improve therapy for people with both Type 1 and Type 2 diabetes.
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