New here, type 2 trialling cgm, interesting info…

[Dawnmc71]

Hi I’m new here! Last check was not good and so jardiance upped to 25mg and still on glucophage. I’m been told not to keto as jardiance can cause keto acidosis. So now low carb and decided to pay for cgm to show me what is going on and what I react to.

Massive spike from swimming 2km (fast/high intensity) in the morning that takes ages to go down!
Lots of Dawn phenomenon at 4am that makes it high in the morning….
Last night very close to a hypo. Caused by big swim? I’m totally confused and didn’t realise I could hypo as a type 2 on my meds! Any insight gratefully received - I ended up with not a lot of sleep!!! Thank you I

 

[harbottle]

When I used sensors, I found that they got low at night when I was lying on them.
Did you check with a finger prick?

 

[Dawnmc71]

Not at 2am - but I always sleep on the opposite side as I have the end of a frozen shoulder!

 

[Lucyr]

Looks like the signal just got noisy and night and not an actual hypo. Non diabetics and diabetics not on medication that causes hypos can get BGs under 4 though, it’s just not a medical emergency

 

[Dawnmc71]

That’s interesting! It seemed like my body didn’t react much to dinner last night either, so maybe I was lower than normal before bed despite a piece of toast at 10pm…maybe that’s the fallout from the exercise spike…

 

[Tdm]

I'd say the night time results are rather messy...normally on dexcom g6 i get a line rather than a bunch of semi connected dots, so its hard to say if you actually went low. Is it the dexcom one?

 

[helli]

@Dawnmc71 was the graph you shared from the first day with the sensor?
I ask because some of us experience “insertion trauma“ - out body takes a day or two to get used to the alien object just inserted. Over this time, the results may not be as reliable.

 

[Dawnmc71]

I'd say the night time results are rather messy...normally on dexcom g6 i get a line rather than a bunch of semi connected dots, so its hard to say if you actually went low. Is it the dexcom one?

It’s the g7 - and up to now mine agreed with what you say. Nothing different with how I slept - but the morning swim spike was a huge 16.6 so wondering if that had brought the overnight values down - once it hit low low it looked like my system kicked some sugar out - and then it dropped again over an hour, even lower.

 

[everydayupsanddowns]

I’d agree that the overnight readings seem a little odd, and as if the sensor or signal was struggling. Did you get loss of signal alerts?

High intensity exercise / anaerobic exercise can cause the liver to dump glucose (because the digestive system shuts down). It might be interesting to experiment with a lower intensity (more cardio) swim to see if you could find a level where your liver didn’t panic?

Hope the sensors continue to give you useful information, and your overnight traces settle a little.

 

[Dawnmc71]

No loss of signal alerts and all dots were there. When you see it on 3hour there are trends like it dropped, then goes up fast (liver dump?) but then came down swiftly again even lower, and repeat. Then once I’d eaten 3 cheddars - about 5g carbs - it was a bit higher but still kept dropping for a few dots and going back up, gradually rising. Weird.

I started swimming to help my shoulder but do enjoy it - no matter what exercise I do my heart rate always gets to top whack - and unless I do a grandma swim (!) it always goes up to 13.4 ish and gradually comes down - if I do 30 mins or 1hour it doesn’t make a difference. Maybe this was a perfect storm when you add a glass of wine with dinner?

 

[Inka]

Can you post the 3hr graph? At first glance it looked like a sensor connection error to me too. I have the G7.

 

[Dawnmc71]

Oh and it’s been fine since - attached last night here. I do always get a strong reaction to dawn phenomenon. It still went down to 4.5 last night - and I had fruit bread before bed on purpose to see what happened….

 

[Inka]

4.5 is fine. If you’re not on meds that cause hypos, I wouldn’t worry as your body will bring it up naturally. Also, it might be that eating before bed is actually indirectly causing the slight drop as your body pumps out insulin a bit late to deal with the food.

 

[Dawnmc71]

Can you post the 3hr graph? At first glance it looked like a sensor connection error to me too. I have the G7.

I can’t get back to that - I wish I’d saved it at the time. This is the closest…

 

[Dawnmc71]

4.5 is fine. If you’re not on meds that cause hypos, I wouldn’t worry as your body will bring it up naturally. Also, it might be that eating before bed is actually indirectly causing the slight drop as your body pumps out insulin a bit late to deal with the food.

Ooh maybe! I do always eat late because I work until 8.30pm.

 

[Dawnmc71]

@Dawnmc71 was the graph you shared from the first day with the sensor?
I ask because some of us experience “insertion trauma“ - out body takes a day or two to get used to the alien object just inserted. Over this time, the results may not be as reliable.

Yes it was, I changed it at about 8.30pm. But I calibrated it to check, and checked again in the morning and it was spot on to my bg test kit. But interesting. Didn’t get that last time, and it was tracing fine until the middle of the night.

 

[harbottle]

During moderate exercise, it's possible for T2s to get low as apparently the uptake of glucose into muscles is higher than the rate of glucose produced by the liver.

In high Intensity exercise hormones are produced (From the adrenal gland) that increase glucose production to a higher rate than the muscles can use it, leading to a rise in BG. A non-diabetic will see a small rise, but will produce insulin to counter it and bring it down (Eventually) and it won't go into hyper levels. Diabetics can go into hyper levels.

However, I believe some research has demonstrated that HIT improves glucose sensitivity for a day or so in people with T2D.

 

[Dawnmc71]

During moderate exercise, it's possible for T2s to get low as apparently the uptake of glucose into muscles is higher than the rate of glucose produced by the liver.

In high Intensity exercise hormones are produced (From the adrenal gland) that increase glucose production to a higher rate than the muscles can use it, leading to a rise in BG. A non-diabetic will see a small rise, but will produce insulin to counter it and bring it down (Eventually) and it won't go into hyper levels. Diabetics can go into hyper levels.

However, I believe some research has demonstrated that HIT improves glucose sensitivity for a day or so in people with T2D.

Yes that’s what I’ve seen - so overall good even it it goes very high for a bit - but wondering if that effect combined with a glass of wine was enough to send me low?

 

[harbottle]

Yes that’s what I’ve seen - so overall good even it it goes very high for a bit - but wondering if that effect combined with a glass of wine was enough to send me low?

Yes, alcohol has a lowering effect. I find that despite 20g of carbs in a beer, I can drink 3 pints and not seen BG go up much at all (And when it does go up, it drops quite rapidly! It's the only time I eat crisps!).