I’ve been using Dexcom G6 in conjunction with the Diabetes 360 App, the CGM is great. I’m 53, I’ve had Type 1 for 40 years and I use a pen for injections, have been using Dexcom since November 18.
However, I’m finding it difficult to understand what’s happening with the IOB calculations, and I’m hoping that someone might be able to explain. I understand that the insulin I inject is logged when I press save and then I can see how the amount of insulin I have on board counts down over time using the % of what is left values as set in the IOB settings eg after 1 hour, residual is 75% and after 4 hours residual is 0% etc.
Here are examples of what I don’t get:
- I log on the app that my blood glucose at 171, and I’m going to eat CHOs at 44g. Diabetes 360 recommends injection of 4 units. I save this, inject and eat the meal. Immediately after the meal I want to eat extra, say an apple at 20g cho. I log my blood glucose which hasn’t changed much and add 20g cho, but the App says 0 insulin? Why not more insulin if I’m eating more carbs? Have IOB for meal, surely now need more insulin for additional carbs?
- In the situation above, when I decide to override the suggestion of 0 injection, and add injection of 2 units for the apple, why does the app cross out the IOB above (ie the residual of the 4 u for the meal) in the dosage line instead of adding the 2 to whatever is the residual insulin?
- It also does not add the suggested injection value for a high blood sugar with 0 carbs to any residual IOB?
- Lastly I’ve found that occasionally the IOB just disappears ie it doesn’t count down all the way to being 0% after 4 hours. Eg last night I looked at the app which said I had 1.8 units left of a 3 unit injection, I looked 5 minutes later and it said I had 0% IOB. Perhaps I had entered something inadvertently?
I really hope someone might be able to help. The CGM has been fantastic and has changed my life but I’m losing confidence with the Diabetes360 App. I’ve contacted them and they say " I’ve got a point" but they can’t change the way how the App functions.
I am wondering if it just doesn’t deal with snacks. I know that “stacking” insulin is to be avoided but surely what I’m talking about is extra insulin for extra cho?