Far from it. I am always in the same room as a calculator. I just followed the instructions my clinic gave me. Halve basal rates, max basal rate, and max bolus. Double I:C ratio and correction factor.
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No. The U numbers are just the strength, all the numbers in the Omnipod (Dash or O5) are in terms of units, so the pod just divides by the strength.
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Yeah but a unit of u200 is half the volume of a unit of u100 and if the pod doesn’t allow for u200 the user would have to manually input half as many units as they would with u100—- because the pod is measuring the volume, with the non-adjustable assumption that it’s u100 volume
Wouldn’t be an issue for someone who knows what they’re doing—- but they really have to approve for the lowest common denominators….
It does make me wonder how well u200 might work in auto mode for me—- because the pump is just way too conservative in auto mode for me, and I’m well capable of adjusting my bolus numbers accordingly
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I thought they’d done the work, this is from 2016 (aka 10 years ago):
I don’t know if they generalized it to U500 and I can’t seem to find anything on their web site but I thought there were U200 insulin users here, or maybe only on TuD.
The algorithm should not need to be tailored iff they did the work. If not and the algo uses any fixed numbers for things other than insulin then, yes, there is a big problem.
You are right; it might, if they did not do the work, get far more aggressive, or far less aggressive, if you give it something other than what it expects. If they did the work it won’t make a change, but your endo would probably have to enter the programming using some secret doctor code on the PDM, or possibly you would need a special U200 PDM (that’s the way I’d do it.)
I imagine the fda would be a problem with approving anything other than u100 for use in a pump With any sort of auto mode— not to say that’s the right idea, but I think there was a great deaL of reluctance and insistence on idiot proofing this technology
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Some of recall when the industry switched from U40 to U80 and rapidly to U100 insulin’s. Any of us who took U40 insulin can attest to the amazing improvement from U40 to U80 insulin’s. The total syringe load was a blessing as was the decrease in injection irritation, welts, pooling and site wasting.
Wow I cannot even imagine the original U20 insulin’s.
When I first used a U100 and the needle size plummeted to 25 gauge from 16, I was like holy heck, that is a true innovation.
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I have the opposite problem. My algo is too aggressive. Last night it kept pushing me down to lows over and over again, as long as 12 hours after my last bolus. My target is 6.7/120, but the algo doesn’t appear to care. Or maybe it’s gone on summer vacation. Nevertheless, that doesn’t have anything to do with using U200 versus U100.
The problem as I see it is that it insists on everyone being 50/50 basal/bolus, and many of us aren’t. I’m closer to 30/70, so when it tries to make me get 50% of my insulin in basal, I go low over and over. I don’t know what the fix is when that value is built in.
It would be great to have a choice of basal/bolus splits in the settings. Or even better, if the algorithm could deduce the typical split and apply that, rather than only factoring in TDI.
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I’m using the Omnipod 5, and the trainer I had from a few weeks ago said they think 60/40 of bolus to basal was best.
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Well that’s close to me, but it’s different for others. While Contol IQ was off due to a failed Dexcom My pump went to the solid default basal and the ratio was 64/36.
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Mine won’t even give me 25% of my bolus load even if I’m running 250 all day…. I don’t agree with the rationale that u100 vs u200 wouldn’t effect this because the pod is only calibrated for u100— so if it thinks it’s administering 1u of basal per hour (for example) it would actually be 2 if it was u200
My averages are around 40 u bolus per day and no matter what I do it won’t give me more than about 15-20 basal in auto mode
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As the Germans (not naming any particular one) might say, “Der Übervollpfosten”.
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Thankyou, you just saved my life. I had been coming to the conclusion that they just used TDD[Total Daily Dose, of insulin] but I couldn’t believe how anyone could do something that dumb. What you say makes sense and I will defer from using a product that, so far as I can see, may well be that dumb.
TDD is a convenient myth, and, I believe, a harmful one for all but maybe one of us.
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It does try to go to 50/50, but I simply go around it by using direct unit bolus’s. Last I looked I am running about 37% basal and 63% bolus. It is typical I am in the 95% TIR.
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You can adjust your settings to account for the difference in strength with U200. When you halve your basal rate for U200, if it thinks it’s administering 1U of basal per hour, it is in fact 1U per hour with U200.
Correct—- but you can only “halve your basal rate” or adjust it in any fashion at all when it’s in manual mode
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