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Re: [IPk] no delivery alarms

Di ,
The MM high pressure or no delivery alarm will go off when about 2 units of
insulin have been missed which is particulary important when using lispro .

This is actually a very sensitive and fast system but if you have a basal of
1u/hr it will be 2 hours before the alarm is triggered .
Obviously  the catheter occlusion will be detected more rapidly when a bolus
is being delivered .

We have thought of making the alarm more sensitive and faster but the risk
then is that you get nuisance alarms when the alarm goes off by mistake and
you ending up changing your set unnecessarily .

We  thinks that 2 units missed is usually safe enough to prevent DKA from
occurring .
Any comments about this or changes that you would like to see ?

-----Original Message-----
From: Diana Maynard <email @ redacted>
To: email @ redacted <email @ redacted>
Date: 18 May 1999 11:04
Subject: Re: [IPk] no delivery alarms

>Hi Estelle,
>In theory I agree with you.
>But in that case, why does the no delivery alarm commonly occur midway
>through a bolus?
>What I wondered was whether it sometimes requires a significant
>amount of pressure buildup before the alarm is activated?
>For example, if I put my finger over the end of the tubing and bolus,
>i don't get a no delivery alarm immediately - it might take several
>tenths of a unit. But the insulin still isn't getting through. So what
>I'm saying is it might take say an hour for the no delivery alarm to
>go off with just basal insulin being delivered.
>Does that make sense to anyone or am I just inventing problems?
>> Obviously I can't speak for Minimed pumps, but surely you should get a
>> delivery' alarm, whether it be your basal insulin or your bolus delivery
>> going through, because any insulin not getting through could
>> be a risk.  i would have thought that if you didn't get a no delivery
>> when your normal basla insulin was going through, then the problem isn't
>> there.
>Insulin Pumpers website http://www.insulin-pumpers.org/
>for mail subscription assistance, contact: HELP@insulin-pumpers.org

Insulin Pumpers website http://www.insulin-pumpers.org/
for mail subscription assistance, contact: HELP@insulin-pumpers.org