How do insulin pumps work?

Insulin pumps deliver rapid- or short-acting insulin 24 hours a day through a catheter placed under the skin. Your insulin doses are separated into:

  • Basal rates
  • Bolus doses to cover carbohydrate
  • Correction or supplemental doses

Basal insulin is delivered continuously over 24 hours, and keeps your blood glucose levels in range between meals and overnight. Often, you program different amounts of insulin at different times of the day and night to meet different needs.

When you eat, you use buttons on the insulin pump to give additional insulin, called a bolus. You take a bolus to cover the carbohydrate in each meal or snack. If you eat more than you planned, you can simply program a larger bolus of insulin to cover it.

You also take a bolus to treat high blood glucose levels. If you have high blood glucose levels before you eat, you give a correction or supplemental bolus of insulin to bring it back to your target range.







Clinics & Services

We have three strategically located clinics in Joburg & surrounds and a full range of specialist diabetes services.

Pregnancy and Diabetes

Why every pregnant woman should take note of diabetes and what precautions should be taken.