On Fri, 31 Oct 2003 07:46:18 -0500, "oldal4865" <[email hidden]>
Quoted message said:
Radioactive Man wrote in message ...
Quoted message said:I am a 31 year old male with type 1 and I've been using insulin a little over 3 months now.
Until the last week, my doses have been fairly steady at about 1 unit of regular or fast-acting
per 30 g carbs
+ 6 or 8 units of lantus at bedtime. About a week ago, I started getting the flu (with a few days
of mild fevers and lethargy) and found that I had to keep increasing my insulin dose in order to
get the same results as before. At this point, my insulin dose is roughly double what it has
been. I'm still having the nasal congestion, coughing, runny nose, and other symptoms one
normally gets while recovering from the flu, but I believe the worst it over, but still needing
more insulin than before. Of all the following possible explanations for needing more insulin,
what is most likely?
(1) Increased secretion of counter-regulatory hormones due to infection?
(2) Sudden death of many residual beta cells triggered by infection?
(3) Insulin resistance?
(4) Insulin antibodies?
When I have a cold, flu bug, or undergo the stress of surgery, my insulin requirements just
about sky-rocket.
Some examples:
a. The last time I had a cold, I had to increase my insulin to an extent "calculated" to
compensate for the equivalent of about 180 gram of glucose during the daylight hours.
A dose of 180 gram of glucose is equivalent to 360 gram of table sugar, or about a lb of home-made
candy. IOW, a cold had the same effect as eating a lb of candy during daylight hours.
But were the increases more on the basal rate or with the pre-meal boluses?
Quoted message said:
b. The last time I had surgery, I ended up doubling my insulin and halving my carb intake. That
let me cycle between about 130 and 180 mg/dL [whoopee :>( ] However that was a level of
control superior to anything the head nurse had seen before in an orthopedic T1 following
surgery.
As to the reasons, the obvious one is (1). . .counter-regulatory hormones.
However, before the bug, you were using about half the amount of insulin a fully-developed adult-
onset T1 would be expected to use. The behavior of your immune system as it goes after your
remaining betas is more or less a [censored] shoot.
It took somewhere between 3 and 5 years to finish off mine. We have had posters who report 6-month
honeymoons (honeymoon: the period in which the 20% of their betas remaining after initial
diagnosis are finally destroyed). You could very well be experiencing a surge of destruction on
top of the counter-regulatory effect. You will find out in a week or so as the effects of the bug
dwindle.
About two weeks ago, when I went to be screened for a clinical trial, I ended up having to fast from
supper one evening until lunch the next day and also had skipped the evening's dose of lantus. I
believe my blood sugar was in the low 100's the evening before the test, 95 at 7 AM, 115 at 9:30 AM,
and then back to 95 at 11:30 AM. That means I was experiencing the dawn effect, but at the same
time, my pancreas was still making enough insulin to cover it. From what I've read, most type 1's
use 30 - 40% of their insulin as the basal dose, whether on pumps or multiple injections. If we
assume that all my remaining beta cells suddenly died a week ago, then my insulin requirements
should only have increased by 42 - 67%. Thus, beta cell death alone does not entirely account for
the change, but certainly could be contributing to a large proportion of it.
Last time I had a flu-like sickness was late July, which was the same time I discovered I had a
serious blood sugar problem - I had been having symptoms all day at work, came home, checked my
blood sugar for the first time and found it to be 306. I had physical results from several weeks
before showing 215, but I was very skeptical of the result at first. Thus, I would say that in my
case, the flu-like sickness actually caused the death of some beta cells.
Quoted message said:
FWIW, you will probably end up somewhere around 0.5 units per day per kg body weight at the end of
the honeymoon.
That would put me at about 42 units per day. Over the last few days, I've used about 31 units per
day, depending on activity level and carb intakes. As for the issue of insulin sensitivity /
resistence, I should theoretically fall on the low resistance / high sensitivity end of the spectrum
because I am highly active. At this time of year, I normally swim about 10,000 yds per week and run
about 20 miles per week when I am not sick. I always cut the insulin dose a bit for the meal
immediately after exercise, but that effect of increased sensitivity only lasts a few hours.
Quoted message said:
AFAIK, the surge in T1 insulin requirements which accompany stress are not caused by surges in
Insulin Resistance (I.R. doesn't surge, it creeps), or surges in insulin antibodies. (AFAIK,
another "creep" phenomenon).
I also assume that your term "Insulin Antibodies" refers to antibodies which tie up insulin rather
than the antibodies which attack betas.
Correct. That is what I meant. Do these antibodies actually destroy the insulin, or just tie it up
and delay its effect?
Quoted message said:
Regards
Old Al
Thanks for info. I've always appreciated the helpful responses I get here.