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[IP] twisted tubing



laura asked:
> does the MM or any pump signal you if your line isall twisted and 
> you are not getting any insulin? I think some of the pumpsdetect 


I don't know about the others, and I don't know how they would know the 
 difference between a twisted tube or a antibody clogged canula, but i do know
the
MM does not signal special for twisted tubing....if it IS so tightly twisted 
that the tubing is indeed clamped shut, like as if you had slammed it in a 
 drawer, or if you had put one of those little plastic clamps on it, then it may
 take a couple of units delivery before pressure builds up high enough to sound
a
nO DELIVERY alarm....simple twists in the tubing are not gonna clamp it off to 
the point of no insulin getting through...to test this, disconnect....set 
 your pump to give a bolus....watch the end of it drip as it delivers...then
twist
the tube...unless you really clamp it bent, you will still see the drips...at 
least I DO, in my scientific experiement just conducted...your fingernails 
may have a different effect.

It is pretty much the same thing as when you run out of insulin...it may take 
2, 3 or 4 or even MORE units supposedly delivered before there is enough 
 pressue built up to cause alarm...hence when that Low Volume alarm oon my 508
goes
off, i tend to take notice....
i used to get no delivery all the time sinec i rarely would take the pump out 
of the case to see if it was running low....

SSP
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