From Poughkeepsie, New York, USA:
My eight year old son has been pumping for five months and lately we find that no matter how carefully we get every last bubble out at a set change, by the next set change the 20 or so units left in the reservoir look like seltzer! Bubbles, small ones, make their way into the tubing so there are too many to have been "missed" when we did the set change. He primes after disconnecting when he showers. How is the air getting in?
It would be helpful to know what type of reservoir and infusion set you are using. Meanwhile, here are few suggestions to try immediately:
- Let the insulin warm to room temperature for 20 minutes if you are keeping it in the refrigerator. Cold insulin tends to beget bubbles.
- Try tapping the reservoir on the side of the table or use a pen instead of your finger to get out more bubbles. Due to the form of the reservoir it is necessary to work on the bubble expression in a different manner from the way your expressed bubbles in a syringe.
- If there are a lot of small bubbles, try to get them to the top of the reservoir and then pull back on the plunger and make one big bubble which is easier to express.
Original posting 6 Dec 2001
Posted to Insulin Pumps
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