Discussion of Tandem's recently released Basal-IQ function

I’m glad @Chris. If I can get these results anyone can!

Hi @Nickyghaleb The title of the article link I posted above is confusing. I posted it because it explains the Control IQ really well. I think the volunteer study is closed :stuck_out_tongue_winking_eye:

Thanks for all the graphs, makes it much easier to understand. I assume all the red lines are when insulin delivery is off? Surprising how often it is in that mode. Also, it looks like you are using this 24-7 and not just overnight?

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Yes, the red lines are when it suspends. And it not only suspends at low numbers but where ever it sees that you will eventually be too low. There is why it is described at “Predictive”… I use it 24 hours a day. I will post a daytime suspension where I corrected a high and it dropped fast. It suspended at 155 but then leveled it out to an even 111. Otherwise I would have had my typical drop and probably had to treat a low. I am insulin sensitive so the difference of .25u can cause a low. It makes it very difficult. At times, I had my keep my levels higher than I like because I couldn’t get that fine line. This picks up when that happens so that I can aim for 120 without the fear and aiming higher. Also, just a heads up. I have learned that when I go need to treat a low I use 1/2 the carbs I used to due to the suspension of basal.

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@Jattzl
That agrees with my information.

The study is still listed as “recruiting” but I have been told enrollment is full and they are no longer seeking additional participants.

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IMG_0839

This is the example I promised @jag1 of suspension during the day. I hope this isn’t becoming annoying. In this situation morning bolus covered correctly then due to gastro there was a delayed high which leveled out to 160 but dropped and suspended at 140 predicting the low to come. Because of suspension I did not go low and it was stable at 80-90 and leveled out to 109

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Uh-oh… this is heartbreak talking going on right here… Who told you?? I’ve been submitting stuff all over the place…

@Jattzl
No. That is pretty amazing. Without seeing that, I would never have guessed that a drop as steep as shown right before the first suspend would be able to be controlled automatically without going low.

My assumption was a drop that fast would crash right through whatever sort of suspend the pump could try and it would set off the low alert of the cgm.

It really is impressive.

As we STILL are not able to use the update until we get the G6, it actually is really nice seeing this and hearing your experience.

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This is only the one clinical trial for the Control-IQ / PLGS that I am talking about. There is [I think??] only one submission process for that. So if you are submitting other areas for other trials - I have no knowledge of those.

NCT03563313

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EDIT: Key quotes from the article:

AMSL diabetes will be upgrading all of their customers with an existing, in warranty Animas Vibe insulin pump to the t:slim over the course of the next 12 months at no extra cost.

… upgrades are expected to commence in October …

… Australia will be receiving t:slim pumps with an updated algorithm that won’t trigger unnecessary occlusion alarms.

Basal IQ with Dexcom G6 is expected to launch this Australian summer, but is not yet approved.

[Note. Australia is obviously “down under” with their Summer Season being December, January and February.]

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