Anyway, my BG's (BG = blood glucose or sugar) for the day went something like this:
- 11 AM (1 hour after breakfast): 77, ate 1 gel before a 25-minute walk.
- 1:10 PM: 337 (yikes!) -> 1.55 U insulin + 15 g carbs. I was hungry since I hadn't had food since breakfast and was about to ride for 45 miles. I thought the insulin would cover the carbs + bring my BG down since I'm more insulin-sensitive while riding.
- 1:45 PM: 315, okay it's coming down...
- sometime around 2:30 PM: stopped for 20 minutes to help someone change a flat
- 3:45 PM: 360, on the rise again. This was odd, I thought. I took 3.4 U to cover the food I was about to eat at the stop. I thought I was being overly generous and was surprised to see the BG had risen since it was previously falling and I hadn't eaten anything since then.
- 4:00 PM: 45 g carbs estimated; in retrospect I forgot to account for the steamed milk (1 C), about 15 g.
- 4:15 PM: riding again
- 5:00 PM: 508! Yikes. 3.1 U at 5 and 1 U at 5:20 PM. "Did they put regular vanilla syrup in my milk?" was my first thought. Um, I don't think I can blame them!
- 5:32 PM: 448. Okay at least it's coming down...
- 5:50 PM: 559!? Or maybe not...finished riding.
I just tested again and my BG is 213 after 5 more minutes, which means my BG is falling at 504 mg/dL per hour. Okay, I will eat now.
I just finished the oatmeal, and it is 7:46 PM. My BG is 137, or falling 228 mg/dL per hour. It looks like I should be okay. I am just hoping I won't be bouncing up again.
There are probably some lessons to take away from this:
1) Exercising at a new time of day can be tricky. I almost never ride in the afternoon, and can usually manage my BG's pretty well on rides.
2) Don't eat when my BG is high and rising, especially if I suspect I may be having infusion site issues. This may seem like a no-brainer but when it's 4 PM and the last substantial meal you ate was at 9:30 AM and you've been riding for 2 1/2 hours, it can be tough! When I saw the 360 at the bakery I thought it was strange but assumed my extra big bolus (for being on a ride) would do the job. Sometimes when I am riding I could eat what I ate today with maybe 1 U or less. So 3.6 seemed reasonable to cover the food and to help jump-start the BG's to fall.
3) It would be really cool if I had a gadget that could track this info for me and connect the dots before I end up at 550. I can see it now but didn't have a big picture view out there on the ride.
4) It is necessary to test a lot to figure this stuff out. Test strips should be cheaper for all.
5) I don't follow the advice given to me in 1988 to not exercise with a BG over 250. I'm not saying that it's bad advice but it is too vague to account for every situation.
6) I probably should have pulled out my insulin + syringe right away when I saw my BG had started to rise.
7) The Dexcom would have come in handy, but I have one sensor left and am saving it since I don't want to buy a new box soon.
8) Why am I blogging on a Saturday night? Don't I have anything better to do, like go shop for Christmas presents? Riding around with high BG's makes me a little tired, or maybe it's just from a really busy week. Or maybe it's just because I want to stay home and continue reading What Is the What by Dave Eggers!
Well, it's now 8:15 PM and my BG is 182. Do you think it's going up or down?
(Thanks to Blair Ryan, a triathlete who races for UCSD, for inspiring me to do a little analysis on my BG's!)