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[IP] insulin burn?

I had my first bent cannula Thursday (quickset with serter) with 
rotten timing--changed set 7:30 am when I was leaving for the airport 
at 10 am to fly back to Alaska.  By 10 I was almost 400 and rising in 
spite of an extra bolus and put in a new set with an additional 
manual bolus.  (I often go high after a set change and then low if I 
try to bolus down.)  The new set took hold within half an hour and 
while I tested pretty often before and during the actual flight, I 
stayed below 200 for the rest of the day.  However, I didn't have a 
chance to remove the bad site during the travel, and since I got home 
at 3 am Alaska time (5 am internal clock) I didn't take it out until 
the next morning.  Then I discovered that not only was the cannula 
bent at right angles, but the edge of the adhesive itched fiercely 
and was reddened when I removed it.  Today the worst itchy part is 
red and scabbed--almost like a burn.  I suspect that the Novolog I 
use was trapped under the adhesive--but has anyone had this kind of 
surface reaction to an insulin-adhesive combination?  I've never had 
a problem with the infused Novolog.
Sue Ann Bowling, North Pole, Alaska
http://mosquitonet.com/~sbowling (general)
http://bowlingsite.mcf.com/DogPage.html (dogs)
http://climate.gi.alaska.edu/Bowling/Bowling.html (professional--retired)
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