I think my whining about not having a milkshake for years was the inspiration for @Michel to start this thread, so here is my contribution.
I was out with my family yesterday and we decided last minute to eat out at a restaurant that has excellent milkshakes. Three of my children ordered milkshakes, and I felt some peer pressure from this group to order a milkshake, so I went for it. I was a bit high to start 115 (6.4) from a bit too much snack from earlier in the afternoon- but went for it anyways.
The game plan was to do a superbolus for all carbs up front and two hours of basal plus a correction and then hopefully the timing between the arrival of the milkshake and the meal would work with the insulin action to keep me from going high. I usually bolus for protein, especially with a giant burger, but didn’t in this case because of the large amount of carbs I was eating.
I was using Fiasp for those interested and I am also a lower carb guy so this was like eating a couple days carbs in one sitting.
Here are the results after I ordered my food: (Green zone is 3.8 to 8 mmol/l which translates to 69 to 144 mg/dl)
4:25 pm Super bolus (milkshake + burger + 2 hours of basal + correction)
4:35 pm Started milkshake - drank it pretty fast because my T1 toddler was trying to steal it. I gave him a little bit and he ate all the whipping cream off the top.
5pm Ate giant burger with extra carbs and a few french fries.
T=2.5 h Blood sugar started to rise as it appears insulin was running out but food still digesting. hit it with corrections of 1u, 2u, 1u and then got a nice drop. Got home and had some more insulin and a beer (which explains the next drop and the rise around 10pm).
Overall - pretty happy with the results. Highest BG was 185 (10.3) but I was only above 180 (10) for about 20 minutes.
I did not wait for my blood sugar to drop after the initial bolus because there was lots going on and I just could not wait. If I had the luxury of time I would have waited for my BG to drop closer to 70 before I had the milkshake, but as I said, life got in the way and I just went with it.
I try to keep below 144 all the time, so there was a brief excursion into high territory with this try. Next time, I will bolus for the protein and fat which should keep me from getting that rise around 2.5 hours and will try to start with a lower BG.
What did I ever do before owning a CGM?
EDIT: Another excuse for the milkshake was to celebrate my first A1C in the 5’s