The attached is from our local pump club's monthy news
letter. Steve Edelman is a local endo with both a full
patient practice and a heavy involvement in research. He is
also the founder of the Taking Care of Your Diabetes
conference series which I highly recommend if it comes to
your city. tcoyd.orgtcoyd.orgOpen ↗ Steve is a firm believer in
the first law of diabetic control, find what works for you
and do it.
--
-------
Charly Coughran [email hidden]
***********************************************************-
***
The "Un-Tethered" Regimen
By Steve Edelman
The Un-tethered regimen refers to the therapeutic
combination of simultaneously using an insulin pump and
insulin glargine (Lantus) to help improve glycemic
excursions and overall control in a flexible and user
friendly manner.
Why in the world would you be on an insulin pump and a long
acting insulin at the same time? Why would you need an
injection of Lantus if you have the basal rate of your
insulin pump set correctly? Although the Un-tethered regimen
is not for everyone, it does offer several advantages that
many people with diabetes may benefit from.
I have been living with type 1 diabetes since 1970 and I
have been on every possible insulin regimen known to man. In
addition, being a diabetes specialist I know that one shoe
does not fit everyone and it is crucial for long term
success that an insulin regimen be tailored to the
individual needs and lifestyle of the person with diabetes
and not be rigid and inflexible. After being on an insulin
pump for almost 20 years, I switched to Lantus a few years
ago when if first came out. When I was on my insulin pump,
my basal requirement was ~20 units a day. My pump was set at
.8 units/hour between 7 AM and 3AM and 1.0 units/hour
between 3 AM and 7 AM to cover my dawn phenomenon. When I
switched to Lantus I did extremely well on one injection at
bedtime of 20 units. I did not seem to have any problems
with my awakening numbers on this dose and had excellent
control. I took the same premeal bolus dose with my fast
acting analog insulin pen.
I decided to switch to Lantus for several reasons. After
being tethered to my pump for 20 years I wanted a break. I
am very active on the weekends and like to swim, go to the
beach, play ìNFLî basketball with my buddies and soak in our
Jacuzzi at home. The pump seemed to always get in the way
and it really caused havoc with my blood sugars whenever I
took it off for more than 45 minutes. This is the only down
side with having fast acting analogs in the pump in that the
disconnection time must be brief. When ever I tried to
compensate for long disruptions I would have to test a lot
and take several small boluses of Humalog or Novolog and it
was a rare event when I did it just right avoiding hyper or
hypoglycemia. I was also continuing to experience sudden,
unexpected, and aggravating episodes of severe hyperglycemia
and pre-DKA (diabetic ketoacidosis) because of infusion line
disruptions usually at the site of insertion and defective
insertion sets, where the insulin was leaking out of the set
and not being delivered properly. I am also to blame with
some of these episodes caused by letting my pump go empty or
ignoring the low battery alert. Murphyís Law was always true
to form as I was usually in a location away from extra
batteries or insulin.
Although I did great on Lantus, I missed certain features of
the pump. I missed the ease of bolusing throughout the day
before meals and for catch up doses. I sometimes use the
square wave bolus feature for certain meals that consisted
of more protein and fat. Because I have no time to exercise
during the week and eat at sporadic times at work, I liked
having the pump on Monday through Friday.
I decided to try a new approach that I recommended to one of
my patients with type 1 diabetes who loved her pump but got
"all messed up" when she went scuba diving every weekend.
She would disconnect her pump and use multiple injections of
NPH and fast acting insulin in an effort to control her
sugars, however it was a real rollercoaster ride with every
attempt. I have now termed the regimen described below the
"Un-tethered" regimen.
I now take 75% of my basal requirements (75% of 20 units =
15 units) as Lantus at bedtime and set the basal rate of my
pump at 0.2 units/hour, which makes up the remaining 25% of
my basal requirements (.2 for 24 hours = ~5.0 units). I
continue to use my pump for boluses and have the continued
flexibility of square and dual wave bolusing and having
alternate basal rates. I can take off my pump for extended
periods of exercise and have my built in reduced basal rate
(the Lantus I took the night before). I do not have to worry
about hooking up my pump within 45 minutes or taking
frequent injections of insulin to avoid hyperglycemia. I do
not have to worry about sudden and unexpected extreme
elevations of my blood sugar values if I have disruption of
insulin delivery from my pump for any reason. I can now
easily just disconnect my pump and exercise or do whatever
for hours without missing a beat.
My personal regimen in the summer time consists of wearing
the pump Monday through Friday and on Friday night I take 20
units of Lantus and remove my pump for the weekend using my
insulin pen for meal boluses. On Sunday night I take 15
units of Lantus and hook up my pump before I go to bed.
This regimen has worked well for many of my young adult and
teenage patients who are on sport teams and must disconnect
for hours and for a handful of elderly people on pumps who
are not too computer or mechanically savvy with their pumps.
The Un-tethered regimen offers a real buffer safety zone to
avoid ketoacidosis for new pumpers or anyone who disconnects
frequently.
Like I tell my kids every night, I AM A GENIOUS!
-- Steve Edelman, MD
*******************