Type 1 Whole DAY of persistent LOWS despite taking ABSOLUTELY NO INSULIN!!!

By rcmodelr Latest Reply 2014-07-30 13:34:00 -0500
Started 2014-07-28 01:26:30 -0500

Does anybody have any clue what could cause days like yesterday for me?

They don't happen often. In fact the last time this happened was sometime between 7 & 10 years ago.

Yesterday I was planning on going to my work's company picnic but woke up with my CGM alarming telling me I was running LOW… I checked with my meter and it also said I was low, but not quite as low as the CGM was saying so I got up, entered the carb amount into my pump and let it give me the adjusted meal Bolus with the calculated BG Correction deducted from the Bolus.

I ate, and for the next TEN HOURS, I was having an IMPOSSIBLE time getting my BG to climb as HIGH as 75!!!

After several hours fighting the persistent low, I completely DISCONNECTED from my Insulin Pump and spent the next roughly 6.5 hours with my pump disconnected from me and receiving absolutely NO INSULIN…

Yet during the whole time, even during the > 6 hours of absolutely NO Insulin delivery, the HIGHEST I was able to get my BG to rise was about 5 hours into the ordeal, my meter said I was up to 78… But by an hour later, my meter said I was back down in the 50's…

Anybody have any idea what goes on with my body on these rare days that the rest of the time, I'm highly Insulin Sensitive with a TDD of only around 23 Units and average meal Bolus amounts between 1 & 3 units for meals ranging from 30 - 100 grams of carbohydrates?

Most days I need an Hourly Basal Rate of between 0.475 and 0.675 units just to keep my BG < 150. But then I'll get the few odd days like yesterday where with absolutely NO INSULIN administered into my body, I still have a nearly impossible time managing to get my BG to climb up into or over the 100 mg/dl range.

I would have been blaming yesterday's problem on a pump malfunction overdosing me on Insulin if it wasn't for the roughly 6.5 hour time span where I was completely disconnected from the pump and was still completely unable to get my BG to rise as high as 80.

Not only that, but while disconnected, I didn't suspend the pump, and the pump ran out of Insulin this morning at almost exactly the time I had calculated my pump would run out of Insulin at my normal TDD and Basal rate. If the pump had been overdosing me on Insulin yesterday, it should have been running out of Insulin before 3 AM instead of finally saying "I'm EMPTY" about 2/3 of way through a Correction Bolus early this afternoon. (meaning Sunday afternoon.)

6 replies

IronOre 2014-07-30 00:14:53 -0500 Report

Many years ago I had issues with insulin acting erratically ~ I found out I was way passed the expiration date.
Maybe since it is summer (and the temps are high) your insulin in the pump is getting too warm and changing its effectiveness.

rcmodelr 2014-07-30 00:25:34 -0500 Report

That was another thing I had thought of but I was still using Insulin from the same vial that had been consistently working not only the three previous days but also the days after the day of persistent lows.

Not only that, but I've heard of and experienced Insulin LOSING effectiveness due to overheating or getting too old… But I've never heard of any temperature change or "too old Insulin" causing Insulin to suddenly become MORE effective.

Type1Lou 2014-07-28 07:20:14 -0500 Report

I can't address the persistent lows since I haven't experienced that but I was always told not to bolus whenever my BG was below 70. I would eat and then test/bolus later if needed. How low were you when you bolused for that meal? You may wish to call your pump's 24-hour help-line for any advice/info about it…Sorry you missed the picnic.