The Basal-IQ was a wonderful upgrade for me at the time.
My A1c had been floating in the 5.6 to 5.8 range for quite some time.
I was 5.8 before starting Basal-IQ, and dropped to 5.2, my lowest A1c yet, from the Basal-IQ upgrade. I didn’t change my habits of eating (maybe ate a little more.) But I did get more aggressive with my basals, especially at night. This is where I saw the biggest overall improvement with the Basal-IQ update. I am one of those that always have higher BGs at night, whether fasting or eating pizza, I always struggle with my overnight BGs.
I would see Basal-IQ turn off my Basal’s for 15 minutes to 2 hours, depending on what I was doing. It actually did a really good job of this while using Fiasp.
Now, with the Control-IQ and G6. Once I figured a few things out on the G5, I have been GOOD with Dexcom and readings. The G6 I had to add an overnight presoak to the sensor before starting it, and I am great with it now!
I will say that I am NOT as aggressive with my basals yet with the Control-IQ as I was with them on Basal-IQ. Not that I will not be, but I wanted to start making changes in the safest way possible and see how well Control-IQ would handle it.
I will say that I have been torture testing it lately I have been eating way off my normals for different meals, timing, etc.
I think if I get a little more aggressive with my Basals again, I will have OUTSTANDING numbers again, all the while paying attention less, and eating more (not a bad thing really!)
That being said, I am not trying to set an ideal diet to test Control-IQ right now, I want to figure out my worst case stuff, see how far I can push the update, then go back to normal.
That being said, if I eat a sensible and controlled diet, this thing is wonderful! I stay between 90 and 105 most of the time. If I adjusted my basal and correction factor a little more, I think I can even bring that down a little more without worrying nearly as much about what I eat.
The Control-IQ will vary the basal, both up and down, based on your CGM readings. If you are using the sleep mode, 112 to 120 is the range. If it sees a TREND where it will go above or below that range, it will adjust the basal accordingly.
I think it does a VERY good job of controlling the lows. Even better than Basal-IQ was. It will slow down the basal at a higher BG, and shut it off if it keeps going lower. This makes for a much smoother graph when you watch your BGs dropping. Basal would just shut it off, but at a potentially lower number.
Also, all CGMs are usually very accurate when you are working within their sweetspot. I think 90 to 140, or something like that (just guessing memory what their ideal range is for the highest accuracy.) And for most of us, this is right where we want to be.
BUT, lets just say it reads too high, and gives a higher basal. The amount higher that it will give can only be so much, so it would be very doubtful that it could cause you to go hypo and you not sense something is out of whack.
If it reads too low, it slow/stops the basal and lets your Bgs rise more, but this isn’t life threatening.
To be honest, if you are having good reliable numbers from your G5, I see nothing to be concerned about. If the numbers are ok, but not always on par with expectactions, I would look into trying to improve them. The number one thing for my was HYDRATION. I can’t state that enough! I tested this more than once, and it always proved itself. Drink more water and get more accurate numbers. The second was where I placed the sensor, and at what angle. This is a LOT easier with the G6 for me.
And, in the end, turning off either Basal-IQ or Control-IQ takes only a few screen selections. Then it just works like a normal insulin pump and with whatever factors you have programmed in for your profile.