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Weird highs (12ish) after meals... what to do?

M

M_V

Newbie
Messages
2
Type of diabetes
Type 1
Treatment type
Insulin
Hi! I switched to the Freestyle Libre about 5 months ago, but I recently started to see weird highs after meals. Normally, my BG rises from around 5-6 to maybe 8 or 9 and then nicely evens out after a few hours.

Today, the same happened to me three times in a row. All meals contained 30-40 carbs. Meals were at 8:45, 13:15 and 17:15 (see photo of the libre). At all times, my BG rose to around 12 in 1.5 hours and then gradually lowered, even to the point that I had to eat something to prevent a hypo at 15:30.

What is happening here? My Libre is not off, since I also took regular blood tests and they were similar.

I use Novorapid and Tresiba and am really inclined to go for a pump if this continues.
 

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Do you inject ahead of your food, most of us find by injecting 15 -30 mins before a meal it reduces the postprandial spike.
 
Yup, normally around 15 minutes. However, I already did this when I had normal BG values after dinner.

Do you think that going to 30 mins might reduce the problems? My doctor has strongly advised against taking the insulin more than 15 mins before my meal.
 
TBH I wouldn't adjust anything from one day's readings, if you normally keep spikes to 8-9mmol then I'd just see what the next few days bg readings are like before adjusting your injection timing, however some people do inject 30 mins before but you have to be careful and take into consideration the meal you are eating, if its a high-fat meal then fat can delay the absorption of the carbs and could lead to a postprandial hypo if you inject too far ahead of your food.
 
Exactly the same thing happened for me ... injecting my NovoRapid at least 30 minutes before eating made the difference and brought the peaks down. Libre has helped me work out that, even on an empty stomach and wanting to correct with NovoRapid, it doesn't do anything at all until at least half an hour has passed.
 
Was it pasta and white bread. Could be a faster acting care?
I'm beginning to wonder about having to pre-dose insulin myself. The good news is that Novo are planning on releasing an ultra-rapid insulin (10 mins to peak as opposed to 30) later this year. I'll be keen to get my hands on that.
 
I only test 4 hours after a meal as my Apidra is still doing it's thing during that time..I don't worry about peaks during that time so long as it's OK after 4 hours. Insulin reacts differently in people as the absorption rate is different in each of us. Trying to get a good reading 1-2 hours after a meal could lead to hypo 2-4 hours later. The 4 hour testing has stopped me correcting at 2 hours, as I used to do for peaks and hypoed later. My BSs are uually 4.5-7ish mmols most times when I do my carb calcs correct.
 
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